MC1489P现货热卖使用介绍供应商报价哪里找芯片批发报价-中国IC网-芯三七

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产品型号MC1489P的概述

MC1489P芯片概述 MC1489P是一种用于串行通信的电平转化器，它在信息技术和通信系统中发挥着重要角色。作为一种专用集成电路（IC），MC1489P常用于将TTL（晶体管-晶体管逻辑）信号转换为RS-232标准信号，反之亦然。这种功能使它在连接微控制器、单片机和计算机等设备时非常方便，有效支持长距离的数据传输并增强抗干扰能力。 MC1489P的详细参数 MC1489P的主要电子参数包括： 1. 工作电源电压：+5V 2. 逻辑电平： - 输入高电平（VIH）: 2.0V（最小值） - 输入低电平（VIL）: 0.8V（最大值） 3. 输出电压：RS-232标准输出电压范围为±5V至±15V 4. 工作温度范围：-40°C 至 +85°C，适合各种环境条件下的使用 5. 功耗：典型值为270μA 芯片带有多种输入输出功能，通常具有5个输入和5个输出，其中包括数据传输和控...

产品型号MC1489P的Datasheet PDF文件预览

MC1489

MC1489A

QUAD LINE RECEIVERS

■

INPUT RESISTANCE –3k to 7kΩ

INPUT SIGNAL RANGE – ± 30V

INPUT THRESHOLD HYSTERESIS BUILT-IN

RESPONSE CONTROL:

a) LOGIC THRESHOLD SHIFTING

b) INPUT NOISE FILTERING

DESCRIPTION

The MC1489 monolithic quad line receivers are

designed to interface data terminal equipment

with data communications equipment in

conformance with the specifications of EIA

Standard N° RS232C.

DIP

SOP

SCHEMATIC DIAGRAM

September 2003

1/13

MC1489/MC1489A

PIN CONFIGURATION (top view)

ORDERING CODES

DIP14

SO14

SO14 (TAPE & REEL)

MC1489P

MC1489D1

MC1489D1013TR

MC1489AD1013TR

MC1489AP

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

Power Supply Voltage

Input Voltage Range

Output Load Current

Power Dissipation

±30

TOT

Operating Ambient Temperature

Storage Temperature Range

0 to 75

-65 to 150

°C

amb

stg

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is

not implied.

2/13

MC1489/MC1489A

ELECTRICAL CHARACTERISTICS

Response Control Pin in Open; V = 5V, T

= 0 to 75°C, unless otherwise specified.

amb

Symbol

Parameter

Test Conditions

Min.

3.6

Typ.

Max.

Unit

Positive Input Current

= 25 V

= 3 V

8.3

0.43

-3.6

-0.43

Negative Input Current

= - 25 V

= - 3 V

-8.3

Input Turn-On Threshold

Voltage

for MC1489

1.5

= 25°C, V_OL≤ 0.45 V

amb

I = 10 mA

for MC1489A

1.75

1.95

2.25

Input Turn-Off Threshold

Voltage

0.75

1.25

= 25°C, V_OL≥ 2.5 V I = -0.5 mA

amb

Output Voltage High

= 0.75 V, I = -0.5 mA

2.5

I = 0.5 mA Input Open Circuit

Output Voltage Low

= 3 V, I = 10 mA

0.2

-3

0.45

-4

Output Short Circuit

Current

Power Supply Current

Power Consumption

All gates "ON", I = 0 mA, V = 5 V

= 5 V

130

SWITCHING CHARACTERISTICS

V = 5V, T

= 25°C, (see Figure 1)

amb

Symbol

Parameter

Test Conditions

R = 3.9 KΩ

Min.

Typ.

Max.

Unit

Propagation Delay Time

Rise Time

PLH

R = 3.9 KΩ

120

175

THL

PHL

Propagation Delay Time

Fall Time

R = 390 Ω

THL

TEST CIRCUITS

Figure 1 : Switching Response

3/13

MC1489/MC1489A

Figure 2 : Response Control Node

C: capacitor is for noise filtering

Figure 3 : Input Current

Figure 4 : Output Short-Circuit Current

4/13

MC1489/MC1489A

Figure 5 : Output Voltage and Input Threshold Voltage

Figure 6 : Power Supply Currents

5/13

MC1489/MC1489A

TYPICAL APPLICATIONS:

Figure 7 : RS232C Data Transmission

TYPICAL CHARACTERISTICS V = 5V, T

= 25°C, unless otherwise specified

amb

Figure 8 : Input Current vs Input Voltage

Figure 9 : MC1489 Input Threshold Voltage

Adjustment

6/13

MC1489/MC1489A

Figure 10 : MC1489A Input Threshold Voltage

Figure 12 : Input Threshold vs Power Supply

Adjustment

Voltage

Figure 11 : Input Threshold vs Temperature

7/13

MC1489/MC1489A

APPLICATION INFORMATION

The Electronic Industries Association (EIA) has released the RS-232C specification detailing the

requirements for the interface between data processing equipment and data communications equipment.

This standard specifies not only the number and type of interface leads, but also the voltage levels to be

used. The MC1488 quad driver and its companion circuit, the MC1489 quad receiver, provide a complete

interface system between DTL or TTL logic levels and the RS-232C defined levels. The RS-232C

requirements as applied to receivers are discussed herein.

The required input impedance is defined as between 3000Ω and 7000Ω for input voltages between 3.0

and 25V in magnitude; and any voltage on the receiver input in an open circuit condition must be less than

2.0V in magnitude. The MC1489 circuits meet these requirements with a maximum open circuit voltage of

one V

The receiver shall detect a voltage between - 3.0 and - 25V as a Logic "1" and inputs between + 3.0 and

+ 2.5V as a Logic "0". On some interchange leads, an open circuit of power "OFF" condition (300Ω or

more to ground) shall be decoded as an "OFF" condition or Logic "1". For the reason, the input hysteresis

thresholds of the MC1489 circuits are all above ground. Thus an open or grounded input will cause the

same output as a negative or Logic "1" input.

DEVICE CHARACTERISTICS

The MC1489 interface receivers have internal feedback from the second stage to the input stage

providing input hysteresis for noise rejection. The MC1489 input has typical turn-on voltage of 1.25V and

turn-off of 1.0 V for a typical hysteresis of 250mV. The MC1489A has typical turn-on of 1.95V and turn-off

of 0.8V for typically 1.15V of hysteresis.

Each receiver section has an external response control node in addition to the input and output pins,

thereby allowing the designer to vary the input threshold voltage levels. A resistor can be connected

between this node and an external power supply. Figures 2, 4 and 5 illustrate the input threshold voltage

shift possible through this technique.

This response node can also be used for the filtering of the high-frequency, high-energy noise pulses.

Figures 9 and 10 show typical noise-pulse rejection for external capacitors of various sizes.

These two operations on the response node can be combined or used individually for may combinations

of interfacing applications. The MC1489 circuits are particularly useful for interfacing between MOS

circuits and MDTL/MTTL logic systems. In this application, the input threshold voltages are adjusted. (with

the appropriate supply and resistor values) to fall in the center of the MOS voltage logic levels (see Figure

11).

The response node may also be used as the receiver input as long as the designer realizes that he may

not drive this node with a low impedance source to a voltage greater than one diode above ground or less

than one diode below ground. This feature is demonstrated in Figure 12 where two receivers are slaved

to the same line that must still meet the RS-232C impedance requirement.

Figure 13 : Typical Turn-on Threshold vs

Figure 14 : Typical Turn-on Threshold vs

Capacitance from Response Control Pin to GND

8/13

MC1489/MC1489A

Figure 15 : Typical Paralleling of Two MC1489/A Receivers to Meet RS-232C

9/13

MC1489/MC1489A

Plastic DIP-14 MECHANICAL DATA

mm.

inch

TYP.

DIM.

MIN.

TYP

MAX.

MIN.

0.020

0.055

MAX.

0.51

1.39

1.65

0.065

0.5

0.020

0.010

0.25

0.787

8.5

2.54

15.24

0.335

0.100

0.600

7.1

5.1

0.280

0.201

3.3

0.130

1.27

2.54

0.050

0.100

P001A

10/13

MC1489/MC1489A

SO-14 MECHANICAL DATA

mm.

inch

DIM.

MIN.

TYP

MAX.

1.75

0.2

MIN.

TYP.

MAX.

0.068

0.007

0.064

0.018

0.010

0.1

0.003

1.65

0.46

0.25

0.35

0.19

0.013

0.007

0.5

0.019

45˚ (typ.)

8.55

5.8

8.75

6.2

0.336

0.228

0.344

0.244

1.27

7.62

0.050

0.300

3.8

4.6

0.5

4.0

5.3

0.149

0.181

0.019

0.157

0.208

0.050

0.026

1.27

0.68

˚ (max.)

PO13G

11/13

MC1489/MC1489A

Tape & Reel SO-14 MECHANICAL DATA

mm.

TYP

inch

TYP.

DIM.

MIN.

MAX.

330

MIN.

MAX.

12.992

0.519

12.8

20.2

13.2

0.504

0.795

2.362

22.4

6.6

9.2

2.3

4.1

8.1

0.882

0.260

0.362

0.090

0.161

0.319

6.4

0.252

0.354

0.082

0.153

0.311

2.1

3.9

7.9

12/13

MC1489/MC1489A

Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the

consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from

its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications

mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information

previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or

systems without express written approval of STMicroelectronics.

The ST logo is a registered trademark of STMicroelectronics

All other names are the property of their respective owners

STMicroelectronics GROUP OF COMPANIES

Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -

Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.

http://www.st.com

13/13

MC1489P相关文章

配单直通车

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MC1489P产品参数

型号:	MC1489P
是否Rohs认证：	不符合
生命周期：	Transferred
包装说明：	DIP, DIP14,.3
Reach Compliance Code：	unknown
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
风险等级：	5.55
Is Samacsys：	N
其他特性：	RESPONSE CONTROL
输入特性：	SCHMITT TRIGGER
接口集成电路类型：	LINE RECEIVER
接口标准：	EIA-232-D
JESD-30 代码：	R-PDIP-T14
JESD-609代码：	e0
长度：	18.86 mm
功能数量：	4
端子数量：	14
最高工作温度：	75 °C
最低工作温度：
最大输出低电流：	0.01 A
封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP
封装等效代码：	DIP14,.3
封装形状：	RECTANGULAR
封装形式：	IN-LINE
电源：	5 V
认证状态：	Not Qualified
最大接收延迟：	50 ns
接收器位数：	4
座面最大高度：	4.69 mm
子类别：	Line Driver or Receivers
最大压摆率：	26 mA
最大供电电压：	5.5 V
最小供电电压：	4.5 V
标称供电电压：	5 V
表面贴装：	NO
技术：	BIPOLAR
温度等级：	COMMERCIAL EXTENDED
端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE
端子节距：	2.54 mm
端子位置：	DUAL
宽度：	7.62 mm
Base Number Matches：	1

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