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  • 74HC245图
  • 集好芯城

     该会员已使用本站13年以上
  • 74HC245 现货库存
  • 数量25196 
  • 厂家TI(德州仪器) 
  • 封装 
  • 批号22+ 
  • 原装原厂现货
  • QQ:3008092965QQ:3008092965 复制
    QQ:3008092965QQ:3008092965 复制
  • 0755-83239307 QQ:3008092965QQ:3008092965
  • 74HC245PW图
  • 深圳市湘达电子有限公司

     该会员已使用本站10年以上
  • 74HC245PW 现货库存
  • 数量5600 
  • 厂家NXP 
  • 封装TSSOP 
  • 批号20+ 
  • 全新原装现货,一片也是批量价。
  • QQ:215672808QQ:215672808 复制
  • 0755-83229772 QQ:215672808
  • 74HC245图
  • 北京元坤伟业科技有限公司

     该会员已使用本站17年以上
  • 74HC245 现货库存
  • 数量5000 
  • 厂家 
  • 封装 
  • 批号2024+ 
  • 百分百原装正品,现货库存
  • QQ:857273081QQ:857273081 复制
    QQ:1594462451QQ:1594462451 复制
  • 010-62104931 QQ:857273081QQ:1594462451
  • 74HC245BQ图
  • 深圳市恒嘉威智能科技有限公司

     该会员已使用本站7年以上
  • 74HC245BQ 现货库存
  • 数量12264 
  • 厂家NEXPERIA/安世 
  • 封装QFN 
  • 批号21+ 
  • 原装恒嘉威价格最实在
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    QQ:2274045202QQ:2274045202 复制
  • -0755-23942980 QQ:1036846627QQ:2274045202
  • 74HC245BQ图
  • 深圳市勤思达科技有限公司

     该会员已使用本站14年以上
  • 74HC245BQ 现货库存
  • 数量30000 
  • 厂家Nexperia/安世 
  • 封装QFN 
  • 批号2021+ 
  • ▉十二年专注▉ 100%全新原装正品 正规渠道订货 长期现货供应
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    QQ:2881239443QQ:2881239443 复制
  • 0755-83268779 QQ:2881910282QQ:2881239443
  • 74HC245图
  • 金星科技(香港)电子有限公司

     该会员已使用本站14年以上
  • 74HC245 现货库存
  • 数量564300 
  • 厂家NXP/SWIRE 
  • 封装SOP-14DIP-14 
  • 批号22+ 
  • 原厂直销最低价有量咨询可开13%增值税定制IC
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  • -0755-88607771 QQ:1216829635
  • 74HC245PW图
  • 深圳市金和信科技有限公司(原金合讯)

     该会员已使用本站14年以上
  • 74HC245PW 现货库存
  • 数量27000 
  • 厂家NXP/恩智浦 
  • 封装TSSOP-20 
  • 批号2136+ 
  • 不上现货排名,有价格优势,照样拿单,上具体批次,只做原装,放心来问,15年芯片销售经验
  • QQ:714451819QQ:714451819 复制
    QQ:2880443025QQ:2880443025 复制
  • 755-36853282 QQ:714451819QQ:2880443025
  • 74HC245NSR图
  • 深圳市创永盛伟业电子有限公司

     该会员已使用本站11年以上
  • 74HC245NSR 现货库存
  • 数量8800 
  • 厂家TI 特价欢迎订购 
  • 封装SOP 
  • 批号09+ 
  • 绝对原装现货价格优惠@@@@@@@
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    QQ:2881301285QQ:2881301285 复制
  • 0755-83643681 QQ:2881301286QQ:2881301285
  • 74HC245D图
  • 深圳市欧立现代科技有限公司

     该会员已使用本站12年以上
  • 74HC245D 现货库存
  • 数量9500 
  • 厂家NXP/恩智浦 
  • 封装SOP 
  • 批号24+ 
  • 全新原装现货,欢迎询购!
  • QQ:1950791264QQ:1950791264 复制
    QQ:2216987084QQ:2216987084 复制
  • 0755-83222787 QQ:1950791264QQ:2216987084
  • 74HC245D图
  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • 74HC245D 现货库存
  • 数量12500 
  • 厂家NEXPERIA 
  • 封装2000 
  • 批号2023+ 
  • 绝对原装正品现货/优势渠道商、原盘原包原盒
  • QQ:1002316308QQ:1002316308 复制
    QQ:515102657QQ:515102657 复制
  • 深圳分公司0755-83777708“进口原装正品专供” QQ:1002316308QQ:515102657
  • 74HC245D图
  • 深圳市欧昇科技有限公司

     该会员已使用本站2年以上
  • 74HC245D 现货库存
  • 数量20 
  • 厂家NXP/恩智浦 
  • 封装SOP20 
  • 批号1749+ 
  • 诺德讯只做原装正品6A018现货
  • QQ:2885514619QQ:2885514619 复制
  • 0755-89345486 QQ:2885514619
  • 74HC245图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • 74HC245 现货库存
  • 数量519 
  • 厂家NXP 
  • 封装DIP20 
  • 批号21+ 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:1435424310QQ:1435424310 复制
  • 0755-84507451 QQ:1435424310
  • 74HC245D图
  • 深圳市隆鑫创展电子有限公司

     该会员已使用本站15年以上
  • 74HC245D 现货库存
  • 数量1000 
  • 厂家NXP 
  • 封装SOP20 
  • 批号11+ROHS 
  • 一手代理货源&价格可谈可含税%配单侠
  • QQ:2355878626QQ:2355878626 复制
    QQ:2850299242QQ:2850299242 复制
  • 0755-82812278 QQ:2355878626QQ:2850299242
  • 74HC245PW图
  • 北京力通科信电子有限公司

     该会员已使用本站10年以上
  • 74HC245PW 现货库存
  • 数量31 
  • 厂家NXP 
  • 封装1247+ 
  • 批号TSSOP-14 
  • 1元原装现货13661385246
  • QQ:2355365902QQ:2355365902 复制
    QQ:2355365899QQ:2355365899 复制
  • 010-82625766 QQ:2355365902QQ:2355365899
  • 74HC245图
  • 北京罗彻斯特电子科技有限公司

     该会员已使用本站18年以上
  • 74HC245 现货库存
  • 数量2530 
  • 厂家HAR 
  • 封装 
  • 批号0711+ 
  • ▊▊真实原装现货▊可出售样品及配套服务
  • QQ:674627925QQ:674627925 复制
    QQ:372787046QQ:372787046 复制
  • 13261827936军工芯片优势 QQ:674627925QQ:372787046
  • 74HC245D图
  • 深圳市欧立现代科技有限公司

     该会员已使用本站12年以上
  • 74HC245D 现货库存
  • 数量19189 
  • 厂家NXP/恩智浦 
  • 封装SOP 
  • 批号24+ 
  • 全新原装现货,可开增值税发票,欢迎询购!
  • QQ:1950791264QQ:1950791264 复制
    QQ:221698708QQ:221698708 复制
  • 0755-83222787 QQ:1950791264QQ:221698708
  • 74HC245图
  • 深圳西迈尔科技有限公司

     该会员已使用本站9年以上
  • 74HC245 现货库存
  • 数量21000 
  • 厂家TI 
  • 封装SOP20 
  • 批号21+ 
  • 原装现货,假一罚十
  • QQ:13316801556QQ:13316801556 复制
    QQ:2706801556QQ:2706801556 复制
  • 13316801556 QQ:13316801556QQ:2706801556
  • 74HC245PW图
  • 深圳市楷兴电子科技有限公司

     该会员已使用本站7年以上
  • 74HC245PW 现货库存
  • 数量89700 
  • 厂家NXP/恩智浦 
  • 封装TSSOP20 
  • 批号21+ 
  • 全新进口原装现货,代理渠道假一赔十
  • QQ:2881475151QQ:2881475151 复制
  • 0755-83016042 QQ:2881475151
  • 74HC245D图
  • 深圳市顺兴源微电子商行

     该会员已使用本站7年以上
  • 74HC245D 现货库存
  • 数量600000 
  • 厂家NXP 
  • 封装SOP20 
  • 批号15+ 
  • 原装现货,低价出售
  • QQ:3475025894QQ:3475025894 复制
    QQ:3504055308QQ:3504055308 复制
  • 0755-82723655 QQ:3475025894QQ:3504055308
  • 74HC245PW图
  • 深圳市捷立辉科技有限公司

     该会员已使用本站10年以上
  • 74HC245PW 现货库存
  • 数量69896 
  • 厂家NXP/恩智浦 
  • 封装SSOP20 
  • 批号21+ 
  • 绝对原装现货,公司真实库存
  • QQ:1803576909QQ:1803576909 复制
  • -0755-82792948 QQ:1803576909
  • 74HC245D图
  • 上海意淼电子科技有限公司

     该会员已使用本站14年以上
  • 74HC245D 现货库存
  • 数量20000 
  • 厂家NXP 
  • 封装SOP 
  • 批号23+ 
  • 原装现货热卖!请联系吴先生 13681678667
  • QQ:617677003QQ:617677003 复制
  • 15618836863 QQ:617677003
  • 74HC245D图
  • 深圳市恒达亿科技有限公司

     该会员已使用本站16年以上
  • 74HC245D 现货库存
  • 数量19600 
  • 厂家NXP 
  • 封装SOP20 
  • 批号24+ 
  • 只做原装正品现货销售
  • QQ:867789136QQ:867789136 复制
    QQ:1245773710QQ:1245773710 复制
  • 0755-82723761 QQ:867789136QQ:1245773710
  • 74HC245图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • 74HC245 现货库存
  • 数量519 
  • 厂家NXP 
  • 封装DIP20 
  • 批号新批次 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:2881512844QQ:2881512844 复制
  • 075584507705 QQ:2881512844
  • 74HC245D图
  • 深圳市广百利电子有限公司

     该会员已使用本站6年以上
  • 74HC245D 现货库存
  • 数量
  • 厂家NXP(恩智浦) 
  • 封装 
  • 批号23+ 
  • ★★全网低价,原装原包★★
  • QQ:1483430049QQ:1483430049 复制
  • 0755-83235525 QQ:1483430049
  • 74HC245D图
  • 深圳市荣泽信电子经营部

     该会员已使用本站13年以上
  • 74HC245D 现货库存
  • 数量800 
  • 厂家NXP 
  • 封装SOP-20 
  • 批号13+ 
  • 绝对原装正品真实现货,特价
  • QQ:1941699371QQ:1941699371 复制
  • 18028731859 QQ:1941699371
  • 74HC245DW图
  • 深圳市力拓辉电子有限公司

     该会员已使用本站13年以上
  • 74HC245DW 现货库存
  • 数量90000 
  • 厂家NXP 
  • 封装SOIC20 
  • 批号1445+ 
  • 全新原装特价热卖中
  • QQ:2881140004QQ:2881140004 复制
    QQ:2881140005QQ:2881140005 复制
  • 755-82787180 QQ:2881140004QQ:2881140005
  • 74HC245PW【原装现货】图
  • 深圳市赛尔通科技有限公司

     该会员已使用本站12年以上
  • 74HC245PW【原装现货】 现货库存
  • 数量86540 
  • 厂家NXP 
  • 封装TSSOP-20 
  • 批号NEW 
  • █★特价全新原装现货
  • QQ:1134344845QQ:1134344845 复制
    QQ:847984313QQ:847984313 复制
  • 86-0755-83536093 QQ:1134344845QQ:847984313
  • 74HC245PW图
  • 深圳市中杰盛科技有限公司

     该会员已使用本站14年以上
  • 74HC245PW 现货库存
  • 数量32560 
  • 厂家NXP 
  • 封装TSSOP20 
  • 批号2024+ 
  • 【原装优势★★★绝对有货】
  • QQ:409801605QQ:409801605 复制
  • 0755-22968359 QQ:409801605
  • 74HC245N图
  • 深圳市浩兴林电子有限公司

     该会员已使用本站16年以上
  • 74HC245N 现货库存
  • 数量15930 
  • 厂家TI 
  • 封装DIP 
  • 批号23+ 
  • 特价出售,自己库存现货,全新原装
  • QQ:382716594QQ:382716594 复制
    QQ:351622092QQ:351622092 复制
  • 0755-82532799 QQ:382716594QQ:351622092
  • 74HC245图
  • 深圳市澳亿芯电子

     该会员已使用本站13年以上
  • 74HC245 现货库存
  • 数量599 
  • 厂家NXP 
  • 封装SOP-20 
  • 批号 
  • QQ:634389814QQ:634389814 复制
  • 0755-83227826 QQ:634389814
  • 74HC245图
  • 深圳市宗天技术开发有限公司

     该会员已使用本站10年以上
  • 74HC245 现货库存
  • 数量20000 
  • 厂家NXP(恩智浦) 
  • 封装N/A 
  • 批号21+ 
  • 只做原装正品原厂原包
  • QQ:444961496QQ:444961496 复制
    QQ:2824256784QQ:2824256784 复制
  • 0755-88601327 QQ:444961496QQ:2824256784
  • 74HC245TTR图
  • 深圳威尔运电子有限公司

     该会员已使用本站10年以上
  • 74HC245TTR 现货热卖
  • 数量2500 
  • 厂家TI 
  • 封装 
  • 批号15+ 
  • 绝对进口原装货!实单请致电13590154776
  • QQ:276537593QQ:276537593 复制
  • 86-0755-83826550 QQ:276537593
  • 74HC245PW,118图
  • 深圳市创德丰电子有限公司

     该会员已使用本站15年以上
  • 74HC245PW,118 现货热卖
  • 数量69 
  • 厂家NXP 
  • 封装TSSOP20 
  • 批号1352+/1227++ 
  • 一定原装房间现货
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    QQ:2851807191QQ:2851807191 复制
  • 86-755-83226910, QQ:2851807192QQ:2851807191
  • 74HC245PW图
  • 北京力通科信电子有限公司

     该会员已使用本站10年以上
  • 74HC245PW 优势库存
  • 数量31 
  • 厂家NXP 
  • 封装1247+ 
  • 批号TSSOP-14 
  • 1元原装现货13661385246
  • QQ:2355365902QQ:2355365902 复制
    QQ:2355365899QQ:2355365899 复制
  • 010-82625766 QQ:2355365902QQ:2355365899

产品型号74HC245的概述

1. 概述 74HC245是一款高性能的八通道双向总线收发器,广泛应用于数字电路中。它是在74系列逻辑芯片的基础上改进而成的高速度(HC代表“High-speed CMOS”)版本,具有更高的输入和输出电流能力,以及更宽的工作电压范围。74HC245主要用于双向数据传输,尤其是在需要隔离多个数据源的应用场合,能够有效减少信号干扰和延迟。 2. 详细参数 在详细探讨74HC245的参数前,需明确其主要功能。该芯片能够在高电平和低电平之间快速切换,支持2V到6V的工作电压。以下是74HC245的一些关键参数: - 工作电压范围:2V至6V(典型值为4.5V至5.5V) - 输入电流:±1μA(最大) - 输出电流:±6mA(最大) - 逻辑电平范围:高电平≥0.7V_CC,低电平≤0.3V_CC - 工作温度范围:-40°C至85°C - 传输延迟:通常在10ns(取决于工作电压和负载) ...

产品型号74HC245的Datasheet PDF文件预览

74HC245; 74HCT245  
Octal bus tranceiver; 3-state  
Rev. 03 — 31 January 2005  
Product data sheet  
1. General description  
The 74HC245; 74HCT245 is a high-speed Si-gate CMOS device and is pin compatible  
with Low-Power Schottky TTL (LSTTL).  
The 74HC245; 74HCT245 is an octal transceiver featuring non-inverting 3-state bus  
compatible outputs in both send and receive directions. The 74HC245; 74HCT245  
features an output enable input (OE) for easy cascading and a send/receive input (DIR)  
for direction control. OE controls the outputs so that the buses are effectively isolated.  
The 74HC245; 74HCT245 is similar to the 74HC640; 74HCT640 but has true  
(non-inverting) outputs.  
2. Features  
Octal bidirectional bus interface  
Non-inverting 3-state outputs  
Multiple package options  
Complies with JEDEC standard no. 7A  
ESD protection:  
HBM EIA/JESD22-A114-B exceeds 2000 V  
MM EIA/JESD22-A115-A exceeds 200 V  
Specified from 40 °C to +85 °C and from 40 °C to +125 °C  
3. Quick reference data  
Table 1:  
Quick reference data  
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
Type 74HC245  
tPHL, tPLH  
propagation delay  
CL = 15 pF;  
-
7
-
ns  
An to Bn or Bn to An  
VCC = 5 V  
CI  
input capacitance  
-
-
-
3.5  
10  
30  
-
-
-
pF  
pF  
pF  
CI/O  
CPD  
input/output capacitance  
[1]  
power dissipation  
capacitance per  
transceiver  
VI = GND to VCC  
Type 74HCT245  
tPHL, tPLH propagation delay  
An to Bn or Bn to An  
CL = 15 pF;  
CC = 5 V  
-
10  
-
ns  
V
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 1:  
Quick reference data …continued  
GND = 0 V; Tamb = 25 °C; tr = tf = 6 ns.  
Symbol  
CI  
Parameter  
Conditions  
Min  
Typ  
3.5  
10  
Max  
Unit  
pF  
input capacitance  
input/output capacitance  
-
-
-
-
-
-
CI/O  
pF  
[1]  
CPD  
power dissipation  
capacitance per  
transceiver  
VI = GND to  
30  
pF  
VCC 1.5 V  
[1] CPD is used to determine the dynamic power dissipation (PD in µW):  
PD = CPD × VCC2 × fi × N + (CL × VCC2 × fo) where:  
fi = input frequency in MHz;  
fo = output frequency in MHz;  
CL = output load capacitance in pF;  
VCC = supply voltage in V;  
N = number of inputs switching;  
(CL × VCC2 × fo) = sum of outputs.  
4. Ordering information  
Table 2:  
Ordering information  
Type number  
Package  
Temperature range Name  
Description  
Version  
74HC245N  
74HC245D  
40 °C to +125 °C  
40 °C to +125 °C  
DIP20  
SO20  
plastic dual in-line package; 20 leads (300 mil)  
SOT146-1  
SOT163-1  
plastic small outline package; 20 leads;  
body width 7.5 mm  
74HC245PW  
74HC245DB  
74HC245BQ  
40 °C to +125 °C  
40 °C to +125 °C  
40 °C to +125 °C  
TSSOP20  
SSOP20  
plastic thin shrink small outline package; 20 leads; SOT360-1  
body width 4.4 mm  
plastic shrink small outline package; 20 leads;  
body width 5.3 mm  
SOT339-1  
DHVQFN20 plastic dual-in-line compatible thermal enhanced  
very thin quad flat package no leads; 20 terminals;  
body 2.5 × 4.5 × 0.85 mm  
SOT764-1  
74HCT245N  
74HCT245D  
40 °C to +125 °C  
40 °C to +125 °C  
DIP20  
SO20  
plastic dual in-line package; 20 leads (300 mil)  
SOT146-1  
SOT163-1  
plastic small outline package; 20 leads;  
body width 7.5 mm  
74HCT245PW  
74HCT245DB  
74HCT245BQ  
40 °C to +125 °C  
40 °C to +125 °C  
40 °C to +125 °C  
TSSOP20  
SSOP20  
plastic thin shrink small outline package; 20 leads; SOT360-1  
body width 4.4 mm  
plastic shrink small outline package; 20 leads;  
body width 5.3 mm  
SOT339-1  
DHVQFN20 plastic dual-in-line compatible thermal enhanced  
very thin quad flat package no leads; 20 terminals;  
body 2.5 × 4.5 × 0.85 mm  
SOT764-1  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
2 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
5. Functional diagram  
DIR  
1
OE  
19  
18  
17  
A0  
2
19  
B0  
B1  
G3  
1
3EN1  
A1  
3
3EN2  
1
A2  
4
18  
2
2
B2  
B3  
B4  
B5  
B6  
B7  
16  
15  
A3  
5
3
4
5
6
7
8
9
17  
16  
15  
14  
13  
12  
11  
A4  
6
14  
13  
12  
11  
A5  
7
A6  
8
mna175  
A7  
9
mna174  
Fig 1. Logic symbol  
Fig 2. IEC logic symbol  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
3 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
6. Pinning information  
6.1 Pinning  
terminal 1  
index area  
2
3
4
5
6
7
8
9
19  
18  
17  
16  
15  
14  
13  
12  
A0  
A1  
A2  
A3  
A4  
A5  
A6  
A7  
OE  
B0  
B1  
B2  
B3  
B4  
B5  
B6  
1
2
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
DIR  
A0  
V
CC  
OE  
B0  
B1  
B2  
B3  
B4  
B5  
B6  
B7  
245  
3
A1  
4
A2  
5
A3  
245  
(1)  
6
GND  
A4  
7
A5  
8
A6  
9
A7  
001aac432  
10  
GND  
Transparent top view  
001aac431  
(1) The die substrate is attached to this  
pad using conductive die attach  
material. It can not be used as supply  
pin or input  
Fig 3. Pin configuration DIP20, SO20,  
SSOP20 and TSSOP20  
Fig 4. Pin configuration DHVQFN20  
6.2 Pin description  
Table 3:  
Pin description  
Symbol  
DIR  
A0  
Pin  
1
Description  
direction control  
data input/output  
data input/output  
data input/output  
data input/output  
data input/output  
data input/output  
data input/output  
data input/output  
ground (0 V)  
2
A1  
3
A2  
4
A3  
5
A4  
6
A5  
7
A6  
8
A7  
9
GND  
B7  
10  
11  
12  
13  
14  
15  
16  
data input/output  
data input/output  
data input/output  
data input/output  
data input/output  
data input/output  
B6  
B5  
B4  
B3  
B2  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
4 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 3:  
Symbol  
B1  
Pin description …continued  
Pin  
17  
18  
19  
20  
Description  
data input/output  
data input/output  
B0  
OE  
output enable input (active LOW)  
supply voltage  
VCC  
7. Functional description  
7.1 Function table  
Table 4:  
Function table[1]  
Input  
OE  
L
Input/output  
DIR  
L
An  
Bn  
A = B  
input  
Z
input  
B = A  
Z
L
H
H
X
[1] H = HIGH voltage level;  
L = LOW voltage level;  
X = don’t care;  
Z = high-impedance OFF-state.  
8. Limiting values  
Table 5:  
Limiting values  
In accordance with the Absolute Maximum Rating System (IEC 60134). Voltages are referenced to  
GND (ground = 0 V).  
Symbol Parameter  
Conditions  
Min  
Max Unit  
VCC  
IIK  
supply voltage  
0.5 +7  
V
input diode current  
output diode current  
VI < 0.5 V or VI > VCC + 0.5 V  
-
-
±20  
mA  
mA  
IOK  
VO < 0.5 V or  
VO > VCC + 0.5 V  
±20  
±35  
±70  
IO  
output source or sink  
current  
VO = 0.5 V to VCC + 0.5 V  
-
mA  
ICC, IGND VCC or GND current  
-
mA  
Tstg  
Ptot  
storage temperature  
total power dissipation  
DIP20 package  
65  
+150 °C  
[1]  
-
-
750  
500  
mW  
mW  
SO20, SSOP20,  
TSSOP20 and  
DHVQFN20 packages  
[1] For DIP20 packages: above 70 °C, Ptot derates linearly with 12 mW/K.  
For SO20 packages: above 70 °C, Ptot derates linearly with 8 mW/K.  
For SSOP20 and TSSOP20 packages: above 60 °C, Ptot derates linearly with 5.5 mW/K.  
For DHVQFN20 packages: above 60 °C, Ptot derates linearly with 4.5 mW/K.  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
5 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
9. Recommended operating conditions  
Table 6:  
Symbol  
Recommended operating conditions  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
Type 74HC245  
VCC  
VI  
supply voltage  
2.0  
5.0  
6.0  
V
input voltage  
0
-
VCC  
VCC  
1000  
500  
400  
+125  
V
VO  
tr, tf  
output voltage  
0
-
V
input rise and fall  
times  
VCC = 2.0 V  
VCC = 4.5 V  
VCC = 6.0 V  
-
-
ns  
ns  
ns  
°C  
-
6.0  
-
-
-
Tamb  
ambient temperature  
40  
Type 74HCT245  
VCC  
VI  
supply voltage  
4.5  
0
5.0  
-
5.5  
V
input voltage  
VCC  
VCC  
500  
V
VO  
tr, tf  
output voltage  
0
-
V
input rise and fall  
times  
VCC = 4.5 V  
-
6.0  
ns  
Tamb  
ambient temperature  
40  
-
+125  
°C  
10. Static characteristics  
Table 7:  
Static characteristics type 74HC245  
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
Tamb = 25 °C  
VIH  
HIGH-level input voltage  
LOW-level input voltage  
HIGH-level output voltage  
VCC = 2.0 V  
1.5  
1.2  
2.4  
3.2  
0.8  
2.1  
2.8  
-
V
V
V
V
V
V
VCC = 4.5 V  
3.15  
-
VCC = 6.0 V  
4.2  
-
VIL  
VCC = 2.0 V  
-
-
-
0.5  
1.35  
1.8  
VCC = 4.5 V  
VCC = 6.0 V  
VOH  
VI = VIH or VIL  
IO = 20 µA; VCC = 2.0 V  
IO = 20 µA; VCC = 4.5 V  
IO = 20 µA; VCC = 6.0 V  
IO = 6.0 mA; VCC = 4.5 V  
IO = 7.8 mA; VCC = 6.0 V  
1.9  
2.0  
-
-
-
-
-
V
V
V
V
V
4.4  
4.5  
5.9  
6.0  
3.98  
5.48  
4.32  
5.81  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
6 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 7:  
Static characteristics type 74HC245 …continued  
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
VOL  
LOW-level output voltage  
VI = VIH or VIL  
IO = 20 µA; VCC = 2.0 V  
IO = 20 µA; VCC = 4.5 V  
IO = 20 µA; VCC = 6.0 V  
IO = 6.0 mA; VCC = 4.5 V  
IO = 7.8 mA; VCC = 6.0 V  
VI = VCC or GND; VCC = 6.0 V  
VI = VIH or VIL; VO = VCC or GND;  
-
-
-
-
-
-
-
0
0.1  
V
0
0.1  
V
0
0.1  
V
0.15  
0.26  
0.26  
±0.1  
±0.5  
V
0.16  
V
ILI  
input leakage current  
-
-
µA  
µA  
IOZ  
OFF-state output current  
V
CC = 6.0 V  
VI = VCC or GND; IO = 0 A;  
CC = 6.0 V  
ICC  
quiescent supply current  
-
-
8.0  
µA  
V
CI  
input capacitance  
-
-
3.5  
10  
-
-
pF  
pF  
CI/O  
input/output capacitance  
Tamb = 40 °C to +85 °C  
VIH HIGH-level input voltage  
VCC = 2.0 V  
1.5  
-
-
-
-
-
-
-
V
V
V
V
V
V
VCC = 4.5 V  
3.15  
-
VCC = 6.0 V  
4.2  
-
VIL  
LOW-level input voltage  
HIGH-level output voltage  
VCC = 2.0 V  
-
-
-
0.5  
1.35  
1.8  
VCC = 4.5 V  
VCC = 6.0 V  
VOH  
VI = VIH or VIL  
IO = 20 µA; VCC = 2.0 V  
IO = 20 µA; VCC = 4.5 V  
IO = 20 µA; VCC = 6.0 V  
IO = 6.0 mA; VCC = 4.5 V  
IO = 7.8 mA; VCC = 6.0 V  
VI = VIH or VIL  
1.9  
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
4.4  
5.9  
3.84  
5.34  
VOL  
LOW-level output voltage  
IO = 20 µA; VCC = 2.0 V  
IO = 20 µA; VCC = 4.5 V  
IO = 20 µA; VCC = 6.0 V  
IO = 6.0 mA; VCC = 4.5 V  
IO = 7.8 mA; VCC = 6.0 V  
VI = VCC or GND; VCC = 6.0 V  
VI = VIH or VIL; VO = VCC or GND;  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.1  
V
0.1  
V
0.1  
V
0.33  
0.33  
±1.0  
±5.0  
V
V
ILI  
input leakage current  
µA  
µA  
IOZ  
OFF-state output current  
V
CC = 6.0 V  
VI = VCC or GND; IO = 0 A;  
CC = 6.0 V  
ICC  
quiescent supply current  
-
-
80  
µA  
V
Tamb = 40 °C to +125 °C  
VIH  
HIGH-level input voltage  
VCC = 2.0 V  
VCC = 4.5 V  
VCC = 6.0 V  
1.5  
-
-
-
-
-
-
V
V
V
3.15  
4.2  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
7 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 7:  
Static characteristics type 74HC245 …continued  
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
0.5  
Unit  
V
VIL  
LOW-level input voltage  
VCC = 2.0 V  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
VCC = 4.5 V  
1.35  
1.8  
V
VCC = 6.0 V  
V
VOH  
HIGH-level output voltage  
VI = VIH or VIL  
IO = 20 µA; VCC = 2.0 V  
IO = 20 µA; VCC = 4.5 V  
IO = 20 µA; VCC = 6.0 V  
IO = 6.0 mA; VCC = 4.5 V  
IO = 7.8 mA; VCC = 6.0 V  
VI = VIH or VIL  
1.9  
4.4  
5.9  
3.7  
5.2  
-
-
-
-
-
V
V
V
V
V
VOL  
LOW-level output voltage  
IO = 20 µA; VCC = 2.0 V  
IO = 20 µA; VCC = 4.5 V  
IO = 20 µA; VCC = 6.0 V  
IO = 6.0 mA; VCC = 4.5 V  
IO = 7.8 mA; VCC = 6.0 V  
VI = VCC or GND; VCC = 6.0 V  
VI = VIH or VIL; VO = VCC or GND;  
-
-
-
-
-
-
-
0.1  
0.1  
0.1  
0.4  
0.4  
±1.0  
V
V
V
V
V
ILI  
input leakage current  
µA  
IOZ  
OFF-state output current  
±10.0 µA  
V
CC = 6.0 V  
VI = VCC or GND; IO = 0 A;  
CC = 6.0 V  
ICC  
quiescent supply current  
-
-
160  
µA  
V
Table 8:  
Static characteristics type 74HCT245  
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
Tamb = 25 °C  
VIH  
VIL  
HIGH-level input voltage  
LOW-level input voltage  
HIGH-level output voltage  
VCC = 4.5 V to 5.5 V  
VCC = 4.5 V to 5.5 V  
VI = VIH or VIL; VCC = 4.5 V  
IO = 20 µA  
2.0  
-
1.6  
1.2  
-
V
V
0.8  
VOH  
4.4  
4.5  
-
-
V
V
IO = 6 mA  
3.98  
4.32  
VOL  
LOW-level output voltage  
VI = VIH or VIL; VCC = 4.5 V  
IO = 20 µA  
-
-
-
-
0
0.1  
V
IO = 6.0 mA  
0.15  
0.26  
±0.1  
±0.5  
V
ILI  
input leakage current  
VI = VCC or GND; VCC = 5.5 V  
-
-
µA  
µA  
IOZ  
OFF-state output current  
VI = VIH or VIL; VCC = 5.5 V;  
VO = VCC or GND per input pin;  
other inputs at VCC or GND; IO = 0 A  
ICC  
quiescent supply current  
VI = VCC or GND; IO = 0 A;  
-
-
8.0  
µA  
VCC = 5.5 V  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
8 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 8:  
Static characteristics type 74HCT245 …continued  
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
ICC  
additional quiescent supply  
current per input pin  
VI = VCC 2.1 V; other inputs at  
VI = VCC or GND;  
VCC = 4.5 V to 5.5 V; IO = 0 A  
An or Bn inputs  
OE input  
-
-
-
-
-
40  
144  
540  
324  
-
µA  
µA  
µA  
pF  
pF  
150  
90  
DIR input  
CI  
input capacitance  
input/output capacitance  
3.5  
10  
CI/O  
-
Tamb = 40 °C to +85 °C  
VIH  
VIL  
HIGH-level input voltage  
VCC = 4.5 V to 5.5 V  
VCC = 4.5 V to 5.5 V  
VI = VIH or VIL; VCC = 4.5 V  
IO = 20 µA  
2.0  
-
-
-
-
V
V
LOW-level input voltage  
HIGH-level output voltage  
0.8  
VOH  
4.4  
-
-
-
-
V
V
IO = 6 mA  
3.84  
VOL  
LOW-level output voltage  
VI = VIH or VIL; VCC = 4.5 V  
IO = 20 µA  
-
-
-
-
-
-
-
-
0.1  
V
IO = 6.0 mA  
0.33  
±1.0  
±5.0  
V
ILI  
input leakage current  
VI = VCC or GND; VCC = 5.5 V  
µA  
µA  
IOZ  
OFF-state output current  
VI = VIH or VIL; VCC = 5.5 V;  
VO = VCC or GND per input pin;  
other inputs at VCC or GND; IO = 0 A  
ICC  
quiescent supply current  
VI = VCC or GND; IO = 0 A;  
-
-
80  
µA  
VCC = 5.5 V  
ICC  
additional quiescent supply  
current per input pin  
VI = VCC 2.1 V; other inputs at  
VI = VCC or GND;  
VCC = 4.5 V to 5.5 V; IO = 0 A  
An or Bn inputs  
OE input  
-
-
-
-
-
-
180  
675  
405  
µA  
µA  
µA  
DIR input  
Tamb = 40 °C to +125 °C  
VIH  
VIL  
HIGH-level input voltage  
VCC = 4.5 V to 5.5 V  
VCC = 4.5 V to 5.5 V  
VI = VIH or VIL; VCC = 4.5 V  
IO = 20 µA  
2.0  
-
-
-
-
V
V
LOW-level input voltage  
HIGH-level output voltage  
0.8  
VOH  
4.4  
3.7  
-
-
-
-
V
V
IO = 6 mA  
VOL  
LOW-level output voltage  
VI = VIH or VIL; VCC = 4.5 V  
IO = 20 µA  
-
-
-
-
-
-
-
-
0.1  
V
IO = 6.0 mA  
0.4  
V
ILI  
input leakage current  
VI = VCC or GND; VCC = 5.5 V  
±1.0  
±10  
µA  
µA  
IOZ  
OFF-state output current  
VI = VIH or VIL; VCC = 5.5 V;  
VO = VCC or GND per input pin;  
other inputs at VCC or GND; IO = 0 A  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
9 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 8:  
Static characteristics type 74HCT245 …continued  
At recommended operating conditions; voltages are referenced to GND (ground = 0 V).  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
ICC  
quiescent supply current  
VI = VCC or GND; IO = 0 A;  
-
-
160  
µA  
VCC = 5.5 V  
ICC  
additional quiescent supply  
current per input pin  
VI = VCC 2.1 V; other inputs at  
VI = VCC or GND;  
VCC = 4.5 V to 5.5 V; IO = 0 A  
An or Bn inputs  
OE input  
-
-
-
-
-
-
196  
735  
441  
µA  
µA  
µA  
DIR input  
11. Dynamic characteristics  
Table 9:  
Dynamic characteristics type 74HC245  
GND = 0 V; test circuit see Figure 7.  
Symbol Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
Tamb = 25 °C  
tPHL, tPLH  
propagation delay An to Bn or Bn see Figure 5  
to An  
VCC = 2.0 V  
-
-
-
-
25  
9
90  
18  
-
ns  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 5.0 V; CL = 15 pF  
7
VCC = 6.0 V  
7
15  
tPZH, tPZL  
tPHZ, tPLZ  
tTHL, tTLH  
CPD  
3-state output enable time OE to see Figure 6  
An or OE to Bn  
VCC = 2.0 V  
-
-
-
30  
11  
9
150  
30  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
26  
3-state output disable time OE to see Figure 6  
An or OE to Bn  
VCC = 2.0 V  
-
-
-
41  
15  
12  
150  
30  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
26  
output transition time  
see Figure 5  
VCC = 2.0 V  
VCC = 4.5 V  
VCC = 6.0 V  
VI = GND to VCC  
-
-
-
-
14  
5
60  
12  
10  
-
ns  
ns  
ns  
pF  
4
[1]  
power dissipation capacitance  
per transceiver  
30  
Tamb = 40 °C to +85 °C  
tPHL, tPLH  
propagation delay An to Bn or Bn see Figure 5  
to An  
VCC = 2.0 V  
-
-
-
-
-
-
115  
23  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
20  
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Product data sheet  
Rev. 03 — 31 January 2005  
10 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 9:  
Dynamic characteristics type 74HC245 …continued  
GND = 0 V; test circuit see Figure 7.  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
tPZH, tPZL  
3-state output enable time OE to see Figure 6  
An or OE to Bn  
VCC = 2.0 V  
-
-
-
-
-
-
190  
38  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
33  
tPHZ, tPLZ  
3-state output disable time OE to see Figure 6  
An or OE to Bn  
VCC = 2.0 V  
-
-
-
-
-
-
190  
38  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
33  
tTHL, tTLH  
output transition time  
see Figure 5  
VCC = 2.0 V  
VCC = 4.5 V  
VCC = 6.0 V  
-
-
-
-
-
-
75  
15  
13  
ns  
ns  
ns  
Tamb = 40 °C to +125 °C  
tPHL, tPLH  
tPZH, tPZL  
tPHZ, tPLZ  
tTHL, tTLH  
propagation delay An to Bn or Bn see Figure 5  
to An  
VCC = 2.0 V  
-
-
-
-
-
-
135  
27  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
23  
3-state output enable time OE to see Figure 6  
An or OE to Bn  
VCC = 2.0 V  
-
-
-
-
-
-
225  
45  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
38  
3-state output disable time OE to see Figure 6  
An or OE to Bn  
VCC = 2.0 V  
-
-
-
-
-
-
225  
45  
ns  
ns  
ns  
VCC = 4.5 V  
VCC = 6.0 V  
38  
output transition time  
see Figure 5  
VCC = 2.0 V  
VCC = 4.5 V  
VCC = 6.0 V  
-
-
-
-
-
-
90  
18  
15  
ns  
ns  
ns  
[1] CPD is used to determine the dynamic power dissipation (PD in µW):  
PD = CPD × VCC2 × fi × N + (CL × VCC2 × fo) where:  
fi = input frequency in MHz;  
fo = output frequency in MHz;  
CL = output load capacitance in pF;  
VCC = supply voltage in V;  
N = number of inputs switching;  
(CL × VCC2 × fo) = sum of outputs.  
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Product data sheet  
Rev. 03 — 31 January 2005  
11 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
Table 10: Dynamic characteristics type 74HCT245  
GND = 0 V; test circuit see Figure 7.  
Symbol  
Parameter  
Conditions  
Min  
Typ  
Max  
Unit  
Tamb = 25 °C  
tPHL, tPLH  
propagation delay An to Bn or Bn see Figure 5  
to An  
VCC = 4.5 V  
-
-
-
12  
10  
16  
22  
-
ns  
ns  
ns  
VCC = 5.0 V; CL = 15 pF  
tPZH, tPZL  
tPHZ, tPLZ  
3-state output enable time OE to VCC = 4.5 V; see Figure 6  
An or OE to Bn  
30  
3-state output disable time OE to VCC = 4.5 V; see Figure 6  
An or OE to Bn  
-
16  
30  
ns  
tTHL, tTLH  
CPD  
output transition time  
VCC = 4.5 V; see Figure 5  
-
-
5
12  
-
ns  
[1]  
power dissipation capacitance  
per transceiver  
VI = GND to VCC 1.5 V  
30  
pF  
Tamb = 40 °C to +85 °C  
tPHL, tPLH  
tPZH, tPZL  
tPHZ, tPLZ  
tTHL, tTLH  
propagation delay An to Bn or Bn VCC = 4.5 V; see Figure 5  
to An  
-
-
-
-
-
-
-
-
28  
38  
38  
15  
ns  
ns  
ns  
ns  
3-state output enable time OE to VCC = 4.5 V; see Figure 6  
An or OE to Bn  
3-state output disable time OE to VCC = 4.5 V; see Figure 6  
An or OE to Bn  
output transition time  
VCC = 4.5 V; see Figure 5  
Tamb = 40 °C to +125 °C  
tPHL, tPLH  
tPZH, tPZL  
tPHZ, tPLZ  
tTHL, tTLH  
propagation delay An to Bn or Bn VCC = 4.5 V; see Figure 5  
to An  
-
-
-
-
-
-
-
-
33  
45  
45  
18  
ns  
ns  
ns  
ns  
3-state output enable time OE to VCC = 4.5 V; see Figure 6  
An or OE to Bn  
3-state output disable time OE to VCC = 4.5 V; see Figure 6  
An or OE to Bn  
output transition time  
VCC = 4.5 V; see Figure 5  
[1] CPD is used to determine the dynamic power dissipation (PD in µW):  
PD = CPD × VCC2 × fi × N + (CL × VCC2 × fo) where:  
fi = input frequency in MHz;  
fo = output frequency in MHz;  
CL = output load capacitance in pF;  
VCC = supply voltage in V;  
N = number of inputs switching;  
(CL × VCC2 × fo) = sum of outputs.  
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Product data sheet  
Rev. 03 — 31 January 2005  
12 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
12. Waveforms  
V
I
V
V
M
An, Bn input  
GND  
M
t
t
PHL  
PLH  
V
OH  
90 %  
V
V
Bn, An output  
M
M
10 %  
V
OL  
t
t
TLH  
THL  
001aac433  
Measurement points are given in Table 11.  
VOL and VOH are typical voltage output drop that occur with the output load.  
Fig 5. Input (An, Bn) to output (Bn, An) propagation delays and output transition times  
t
t
r
f
V
I
90 %  
OE input  
output  
V
M
10 %  
GND  
t
t
PZL  
PLZ  
V
CC  
LOW-to-OFF  
OFF-to-LOW  
V
M
10 %  
V
OL  
t
t
PHZ  
PZH  
V
OH  
90 %  
output  
HIGH-to-OFF  
OFF-to-HIGH  
V
M
GND  
outputs  
enabled  
outputs  
enabled  
outputs  
disabled  
001aac479  
Measurement points are given in Table 11.  
VOL and VOH are typical voltage output drop that occur with the output load.  
Fig 6. 3-state output enable and disable times  
Table 11: Measurement points  
Type  
Input  
VM  
Output  
VM  
74HC245  
0.5VCC  
1.3 V  
0.5VCC  
1.3 V  
74HCT245  
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Product data sheet  
Rev. 03 — 31 January 2005  
13 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
V
V
CC  
CC  
V
V
R
= 1 k  
I
O
L
PULSE  
GENERATOR  
open  
D.U.T  
R
C
50 pF  
T
L
mgk563  
Test data is given in Table 12.  
Definitions test circuit:  
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.  
CL = Load capacitance including jig and probe capacitance.  
RL = Load resistor.  
Fig 7. Load circuitry for switching times  
Table 12: Test data  
Type  
Input  
VI  
Test  
tr, tf  
6 ns  
6 ns  
tPHL, tPLH  
open  
tPZH, tPHZ  
GND  
tPZL, tPLZ  
VCC  
74HC245  
VCC  
3 V  
74HCT245  
open  
GND  
VCC  
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Product data sheet  
Rev. 03 — 31 January 2005  
14 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
13. Package outline  
DIP20: plastic dual in-line package; 20 leads (300 mil)  
SOT146-1  
D
M
E
A
2
A
A
1
L
c
e
w M  
Z
b
1
(e )  
1
b
M
H
20  
11  
pin 1 index  
E
1
10  
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
(1)  
A
A
A
(1)  
(1)  
Z
1
2
UNIT  
mm  
b
b
c
D
E
e
e
1
L
M
M
H
w
1
E
max.  
min.  
max.  
max.  
1.73  
1.30  
0.53  
0.38  
0.36  
0.23  
26.92  
26.54  
6.40  
6.22  
3.60  
3.05  
8.25  
7.80  
10.0  
8.3  
4.2  
0.51  
3.2  
2.54  
0.1  
7.62  
0.3  
0.254  
0.01  
2
0.068  
0.051  
0.021  
0.015  
0.014  
0.009  
1.060  
1.045  
0.25  
0.24  
0.14  
0.12  
0.32  
0.31  
0.39  
0.33  
inches  
0.17  
0.02  
0.13  
0.078  
Note  
1. Plastic or metal protrusions of 0.25 mm (0.01 inch) maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
JEITA  
99-12-27  
03-02-13  
SOT146-1  
MS-001  
SC-603  
Fig 8. Package outline SOT146-1 (DIP20)  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
15 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
SO20: plastic small outline package; 20 leads; body width 7.5 mm  
SOT163-1  
D
E
A
X
c
y
H
E
v
M
A
Z
20  
11  
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
10  
w
detail X  
e
M
b
p
0
5
10 mm  
scale  
DIMENSIONS (inch dimensions are derived from the original mm dimensions)  
A
max.  
(1)  
(1)  
(1)  
UNIT  
mm  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
θ
1
2
3
p
E
p
Z
0.3  
0.1  
2.45  
2.25  
0.49  
0.36  
0.32  
0.23  
13.0  
12.6  
7.6  
7.4  
10.65  
10.00  
1.1  
0.4  
1.1  
1.0  
0.9  
0.4  
2.65  
0.1  
0.25  
0.01  
1.27  
0.05  
1.4  
0.25  
0.01  
0.25  
0.1  
8o  
0o  
0.012 0.096  
0.004 0.089  
0.019 0.013 0.51  
0.014 0.009 0.49  
0.30  
0.29  
0.419  
0.394  
0.043 0.043  
0.016 0.039  
0.035  
0.016  
inches  
0.055  
0.01 0.004  
Note  
1. Plastic or metal protrusions of 0.15 mm (0.006 inch) maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
JEITA  
99-12-27  
03-02-19  
SOT163-1  
075E04  
MS-013  
Fig 9. Package outline SOT163-1 (SO20)  
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© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
16 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
SSOP20: plastic shrink small outline package; 20 leads; body width 5.3 mm  
SOT339-1  
D
E
A
X
v
c
H
M
A
y
E
Z
20  
11  
Q
A
2
A
(A )  
3
A
1
pin 1 index  
θ
L
p
L
1
10  
detail X  
w
M
b
p
e
0
2.5  
5 mm  
scale  
DIMENSIONS (mm are the original dimensions)  
A
(1)  
(1)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.  
8o  
0o  
0.21  
0.05  
1.80  
1.65  
0.38  
0.25  
0.20  
0.09  
7.4  
7.0  
5.4  
5.2  
7.9  
7.6  
1.03  
0.63  
0.9  
0.7  
0.9  
0.5  
mm  
2
0.65  
0.25  
1.25  
0.2  
0.13  
0.1  
Note  
1. Plastic or metal protrusions of 0.2 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
JEITA  
99-12-27  
03-02-19  
SOT339-1  
MO-150  
Fig 10. Package outline SOT339-1 (SSOP20)  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
17 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
TSSOP20: plastic thin shrink small outline package; 20 leads; body width 4.4 mm  
SOT360-1  
D
E
A
X
c
H
v
M
A
y
E
Z
11  
20  
Q
A
2
(A )  
3
A
A
1
pin 1 index  
θ
L
p
L
1
10  
detail X  
w
M
b
p
e
0
2.5  
5 mm  
scale  
DIMENSIONS (mm are the original dimensions)  
A
(1)  
(2)  
(1)  
UNIT  
A
A
A
b
c
D
E
e
H
L
L
Q
v
w
y
Z
θ
1
2
3
p
E
p
max.  
8o  
0o  
0.15  
0.05  
0.95  
0.80  
0.30  
0.19  
0.2  
0.1  
6.6  
6.4  
4.5  
4.3  
6.6  
6.2  
0.75  
0.50  
0.4  
0.3  
0.5  
0.2  
mm  
1.1  
0.65  
0.25  
1
0.2  
0.13  
0.1  
Notes  
1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.  
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
JEITA  
99-12-27  
03-02-19  
SOT360-1  
MO-153  
Fig 11. Package outline SOT360-1 (TSSOP20)  
9397 750 14502  
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Product data sheet  
Rev. 03 — 31 January 2005  
18 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
DHVQFN20: plastic dual in-line compatible thermal enhanced very thin quad flat package; no leads;  
20 terminals; body 2.5 x 4.5 x 0.85 mm  
SOT764-1  
B
A
D
A
A
1
E
c
detail X  
terminal 1  
index area  
C
terminal 1  
index area  
e
1
y
y
e
b
v
M
C
C
A
B
C
1
w
M
2
9
L
1
10  
E
h
e
20  
11  
19  
12  
D
h
X
0
2.5  
5 mm  
scale  
DIMENSIONS (mm are the original dimensions)  
(1)  
A
(1)  
(1)  
UNIT  
A
b
c
E
e
e
1
y
D
D
E
L
v
w
y
1
1
h
h
max.  
0.05 0.30  
0.00 0.18  
4.6  
4.4  
3.15  
2.85  
2.6  
2.4  
1.15  
0.85  
0.5  
0.3  
mm  
0.05  
0.1  
1
0.2  
0.5  
3.5  
0.1  
0.05  
Note  
1. Plastic or metal protrusions of 0.075 mm maximum per side are not included.  
REFERENCES  
OUTLINE  
EUROPEAN  
PROJECTION  
ISSUE DATE  
VERSION  
IEC  
JEDEC  
JEITA  
02-10-17  
03-01-27  
SOT764-1  
- - -  
MO-241  
- - -  
Fig 12. Package outline SOT764-1 (DHVQFN20)  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
19 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
14. Revision history  
Table 13: Revision history  
Document ID  
Release  
date  
Data sheet status  
Change  
notice  
Doc. number  
Supersedes  
74HC_HCT245_3  
Modifications:  
20050131  
Product data sheet  
-
9397 750 14502 74HC_HCT245_CNV_2  
The format of this data sheet is redesigned to comply with the new presentation and  
information standard of Philips Semiconductors  
Section 4 “Ordering information”, Section 6 “Pinning information” and Section 13 “Package  
outline” are modified to include the DHVQFN20 package.  
74HC_HCT245_CNV_2 19930930  
Product specification -  
-
-
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
20 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
15. Data sheet status  
Level Data sheet status[1] Product status[2] [3]  
Definition  
I
Objective data  
Development  
This data sheet contains data from the objective specification for product development. Philips  
Semiconductors reserves the right to change the specification in any manner without notice.  
II  
Preliminary data  
Qualification  
This data sheet contains data from the preliminary specification. Supplementary data will be published  
at a later date. Philips Semiconductors reserves the right to change the specification without notice, in  
order to improve the design and supply the best possible product.  
III  
Product data  
Production  
This data sheet contains data from the product specification. Philips Semiconductors reserves the  
right to make changes at any time in order to improve the design, manufacturing and supply. Relevant  
changes will be communicated via a Customer Product/Process Change Notification (CPCN).  
[1]  
[2]  
Please consult the most recently issued data sheet before initiating or completing a design.  
The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Internet at  
URL http://www.semiconductors.philips.com.  
[3]  
For data sheets describing multiple type numbers, the highest-level product status determines the data sheet status.  
16. Definitions  
17. Disclaimers  
Short-form specification The data in a short-form specification is  
extracted from a full data sheet with the same type number and title. For  
detailed information see the relevant data sheet or data handbook.  
Life support — These products are not designed for use in life support  
appliances, devices, or systems where malfunction of these products can  
reasonably be expected to result in personal injury. Philips Semiconductors  
customers using or selling these products for use in such applications do so  
at their own risk and agree to fully indemnify Philips Semiconductors for any  
damages resulting from such application.  
Limiting values definition Limiting values given are in accordance with  
the Absolute Maximum Rating System (IEC 60134). Stress above one or  
more of the limiting values may cause permanent damage to the device.  
These are stress ratings only and operation of the device at these or at any  
other conditions above those given in the Characteristics sections of the  
specification is not implied. Exposure to limiting values for extended periods  
may affect device reliability.  
Right to make changes — Philips Semiconductors reserves the right to  
make changes in the products - including circuits, standard cells, and/or  
software - described or contained herein in order to improve design and/or  
performance. When the product is in full production (status ‘Production’),  
relevant changes will be communicated via a Customer Product/Process  
Change Notification (CPCN). Philips Semiconductors assumes no  
responsibility or liability for the use of any of these products, conveys no  
license or title under any patent, copyright, or mask work right to these  
products, and makes no representations or warranties that these products are  
free from patent, copyright, or mask work right infringement, unless otherwise  
specified.  
Application information Applications that are described herein for any  
of these products are for illustrative purposes only. Philips Semiconductors  
make no representation or warranty that such applications will be suitable for  
the specified use without further testing or modification.  
18. Contact information  
For additional information, please visit: http://www.semiconductors.philips.com  
For sales office addresses, send an email to: sales.addresses@www.semiconductors.philips.com  
9397 750 14502  
© Koninklijke Philips Electronics N.V. 2005. All rights reserved.  
Product data sheet  
Rev. 03 — 31 January 2005  
21 of 22  
74HC245; 74HCT245  
Philips Semiconductors  
Octal bus tranceiver; 3-state  
19. Contents  
1
2
3
4
5
General description . . . . . . . . . . . . . . . . . . . . . . 1  
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1  
Quick reference data . . . . . . . . . . . . . . . . . . . . . 1  
Ordering information. . . . . . . . . . . . . . . . . . . . . 2  
Functional diagram . . . . . . . . . . . . . . . . . . . . . . 3  
6
6.1  
6.2  
Pinning information. . . . . . . . . . . . . . . . . . . . . . 4  
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4  
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4  
7
7.1  
8
Functional description . . . . . . . . . . . . . . . . . . . 5  
Function table . . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . . 5  
Recommended operating conditions. . . . . . . . 6  
Static characteristics. . . . . . . . . . . . . . . . . . . . . 6  
Dynamic characteristics . . . . . . . . . . . . . . . . . 10  
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13  
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 15  
Revision history. . . . . . . . . . . . . . . . . . . . . . . . 20  
Data sheet status . . . . . . . . . . . . . . . . . . . . . . . 21  
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21  
Contact information . . . . . . . . . . . . . . . . . . . . 21  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
© Koninklijke Philips Electronics N.V. 2005  
All rights are reserved. Reproduction in whole or in part is prohibited without the prior  
written consent of the copyright owner. The information presented in this document does  
not form part of any quotation or contract, is believed to be accurate and reliable and may  
be changed without notice. No liability will be accepted by the publisher for any  
consequence of its use. Publication thereof does not convey nor imply any license under  
patent- or other industrial or intellectual property rights.  
Date of release: 31 January 2005  
Document number: 9397 750 14502  
Published in The Netherlands  

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