ST75185CTR原理图各脚功能电路原理芯片引脚定义引脚图及功能-中国IC网-芯三七

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产品型号ST75185CTR的概述

芯片ST75185CTR的概述 ST75185CTR是一款专为高性能通信系统设计的RS-485收发器。它被广泛应用于工业自动化、数字通信、控制系统、数据采集及监控等领域。作为一种半双工通信接口，ST75185CTR具有较高的抗干扰能力和较长的传输距离，使其在多种环境中均表现出色。 RS-485标准广泛应用于各种电子设备的通信中，尤其是在需要长距离和多点连接的场合。ST75185CTR能够在多种协议下工作，支持传输速率高达10 Mbps，极大地满足了现代通信对速度和效率的要求。芯片ST75185CTR的详细参数 ST75185CTR的主要技术参数如下： - 通信接口类型：RS-485 - 工作电压：4.75 V 至 5.25 V - 输出驱动电流：达到 ± 250 mA - 工作温度范围：-40°C 至 +85°C - 最大传输速率：10 Mbps - 逻辑电平：高电平≥ 2.0 V，...

产品型号ST75185CTR的Datasheet PDF文件预览

ST75185

MULTIPLE RS-232 DRIVERS AND RECEIVERS

■

MEETS AND EXCEEDS THE

REQUIREMENTS OF EIA/TIA-232-E AND

ITUV.28 STANDARD

SINGLE CHIP WITH EASY INTERFACE

BETWEEN UART AND SERIAL PORT

CONNECTOR OF IBM PC/AT AND

COMPATIBLES

■

DESIGNED TO SUPPORT DATA RATES UP

TO 120 Kbps

PINOUT COMPATIBLE WITH ST75C185

SOP

TSSOP

DESCRIPTION

The ST75185 contains three drivers and five

receivers. The pinout matches the DB9S

connector design in order to decrease the part

count, reduce the board space required and allow

easy interconnection of the UART and serial port

connector of IBM PC/AT and compatibles. The

SSOP

bipolar circuits and processing of the ST75185

provides a rugged low-cost solution for this

function at the expense of quiescent power and

external passive components relative to the

ST75C185.

The ST75185 complies with the requirements of

the EIA/TIA 232-E and ITU (formally CCITT) v.28

standards. These standards are for data

unless the designer has design control of the

cable and the interface circuits at the both ends.

For interoperability at signalling rates to 120

K-bits/s, use of EIA/ITA-423-B (ITU v.10) and EIA/

interchange between

a host computer and

ITA-422-B

(ITU

v.11)

standards

are

peripheral at signalling rates up to 20k-bits/s. The

switching speeds of the ST75185 are fast enough

to support rates up to 120K-bits/s with lower

capacitive loads (shorter cables). Interoperability

at the higher signalling rates cannot be assured

recommended.

The ST75185 is characterized for operation over

the range of 0°C to 70°C.

ORDERING CODES

Temperature

Type

Package

TSSOP20 (Tape & Reel)

Comments

Range

ST75185CTR

ST75185CD

ST75185CDR

ST75185CPR

0 to 70 °C

2500 parts per reel

40 parts per tube / 25 tubes per box

1000 parts per reel

SO-20 (Tube)

SO-20 (Tape & Reel)

SSOP-20 (Tape & Reel)

1350 parts per reel

December 2002

1/18

ST75185

PIN CONNECTION IEC LOGIC SYMBOL AND LOGIC DIAGRAM

PIN DESCRIPTION

PlN N°

SYMBOL

NAME AND FUNCTION

Supply Voltage (+12V)

RA1

RA2

RA3

DY1

DY2

RA4

DY3

RA5

First Receiver Input

Second Receiver Input

Third Receiver Input

First Driver Output

Second Driver Output

Fourth Receiver Input

Third Driver Output

Fifth Receiver Input

Supply Voltage (-12V)

GND

RY5

DA3

RY4

DA2

DA1

RY3

RY2

RY1

Ground

Fifth Receiver Ouput

Third Driver Intput

Fourth Receiver Ouput

Second Driver Input

First Driver Input

Third Receiver Ouput

Second Receiver Output

First Receiver Output

Supply Voltage (+5V)

2/18

ST75185

ABSOLUTE MAXIMUM RATINGS OVER OPERATING FREE-AIR TEMPERATURE RANGE

Symbol

Parameter

Value

Unit

Supply Voltage (Note 1)

-15

Input Voltage Range (DRIVER)

-15 to 7

-30 to 30

-15 to 15

Input Voltage Range (RECEIVER)

Output Voltage Range (DRIVER)

Receiver Low Level Output Current

Continuous Total Power Dissipation

Operating Free-Air Tempereature Range

Storage Temperature Range

See dissipation Rating Table

0 to 70

-65 to + 150

260

°C

stg

Lead Temperature 1.6mm from case for 10 sec

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

not implied.

NOTE 1: All voltage are with respect to the network ground terminal.

DISSIPATION RATING TABLE

Power Rating

Derating Factor

Power Rating

Package

at T ≤ 25°C

above T = 25°C (*)

at T ≤ 70°C

MICROPACKAGE (D)

1125 mW

9.0 mW/°C

720 mW

(*) This is the reverse of the traditional junction-case thermal resistance R

tJ-C

RECOMMENDED OPERATING CONDITIONS

Symbol

Parameter

Min

Max

Unit

Supply Voltage

7.5

-7.5

4.5

-15

5.5

Supply Voltage

Driver Input Voltage

High Level Output Current

DRIVER

-6

-0.5

RECEIVER

DRIVER

Low Level Output Current

°C

RECEIVER

Operating Free-Air Tempereature Range

3/18

ST75185

SUPPLY CURRENTS

Test Conditions

Value

Typ.

Symbol

Parameter

Unit

Min.

Max.

Supply Current from V

-9

No load.

All inputs at

1.9V

-12

-15

-9

No load.

All inputs at

0.8V

4.5

5.5

-12

-15

-9

No load.

All inputs at

1.9V

-15

-19

-25

-3.2

-12

-15

-9

No load.

All inputs at

0.8V

-12

-15

No load. All inputs at 5V

= 5V

DRIVER ELECTRICAL CHARACTERISTICS OVER OPERATING FREE-AIR TEMPERATURE

RANGE (V = 9V, V = -9V, V = 5V, unless otherwise specified)

Value

Symbol

Parameter

Test Conditions

Unit

Min.

Typ.

7.5

Max.

High Level Output Voltage

= 0.8 V R = 3KΩ (See Figure 1)

Low Level Output Voltage

(Note 3)

= 1.9 V R = 3KΩ (See Figure 1)

-7.5

-6

High Level Input Current

Low Level Input Current

V = 5 V (See Figure 2)

µA

V = 0 V (See Figure 2)

−1.6

−19.5

High Level Short Circuit

Output Current (Note 4)

= 0.8 V

V = 0 V (See Figure 1)

-4.5

4.5

−12

OS(H)

Low Level Short Circuit

Output Current

= 2 V

V = 0 V (See Figure 1)

19.5

OS(L)

Output Resistance

= V = V = 0 V

= -2 to 2 V (Note 5)

300

Ω

NOTE 3: The algebraic convention, where the more positive (less negative) limits designated as maximum, is used in this datasheet for logic

levels only (e.g. if - 10V is a maximum, the typical value is a more negative voltage).

NOTE 4: Output short circuit conditions must maintain the total power dissipation below absolute maximum ratings.

NOTE 5: Test conditions are those specified by EIA-232-E and as listed above.

4/18

ST75185

DRIVER SWITCHING CHARACTERISTICS (V = 12V, V = -12V, V = 5V, T = 25 °C)

Value

Symbol

Parameter

Test Conditions

Unit

Min.

Typ.

Max.

Propagation Delay Time, Low to High R = 3 to 7 KΩ C = 15 pF

315

500

175

100

2.5

µs

PLH

PHL

Level Output

(See Figure 3, 4)

Propagation Delay Time, High to Low R = 3 to 7 KΩ C = 15 pF

Level Output

(See Figure 3, 4)

Transition Time Low to High Level

Output

R = 3 to 7 KΩ C = 15 pF

(See Figure 3, 4)

TLH

R = 3 to 7 KΩ C = 2500 pF

1.7

(Note 6, See Figure 3, 4)

Transition Time High to Low Level

Output

R = 3 to 7 KΩ C = 15 pF

(See Figure 3, 4)

7.5

THL

R = 3 to 7 KΩ C = 2500 pF

1.5

2.5

(Note 6, See Figure 3, 4)

NOTE 6: Measured between -3V and 3V points of output waveform (EIA-232-E conditions), all unused inputs are tied.

RECEIVER ELECTRICAL CHARACTERISTICS OVER OPERATING CONDITIONS

Value

Symbol

Parameter

Test Conditions

Unit

Min.

Typ.

2.2

Max.

Positive Going Threshold Voltage

Negative Going Threshold Voltage

(See Figure 6)

T = 25 °C (See Figure 6)

2.4

T+

0.75

0.5

2.6

0.97

T-

Input Hysteresis (V + - V -)

T T

hys

High Level Output Voltage

= -0.5mA

= 0.75 V

Inputs Open

I = 10 mA

Low Level Output Voltage

High Level Input Current

V = 3 V

0.2

0.45

8.3

V = 25 V (See Figure 6)

3.6

0.43

-3.6

V = 3 V (See Figure 6)

Low Level Input Current

V = -25 V (See Figure 6)

-8.3

-12

V = -3 V (See Figure 6)

-0.43

Short-Circuit Output Current

V = 0 V

-3.4

(See Figure 5)

All typical values are at TA = 25°C, VCC = 5V, VDD = 9V and VSS=-9V

RECEIVER SWITCHING CHARACTERISTICS (V = 12V, V = -12V, V = 5V T = 25°C)

Value

Symbol

Parameter

Test Conditions

Unit

Min.

Typ.

Max.

Propagation Delay Time Low to High R = 5 KΩ C = 50 pF

400

1000

PLH

PHL

Level Output

(See Figure 6)

Propagation Delay Time High to Low R = 5 KΩ C = 50 pF

200

150

525

Level Output

(See Figure 6)

Transition Time Low to High Level

Output

R = 5 KΩ C = 50 pF

TLH

THL

(See Figure 6)

Transition Time High to Low Level

Output

R = 5 KΩ C = 50 pF

(See Figure 6)

5/18

ST75185

APPLICATION CIRCUITS

Figure 1 : Driver Test Circuit for V , I

and I

SO(L)

OH SO(H)

6/18

ST75185

Figure 2 : Driver Test Circuit for I and I

Figure 3 : Driver Test Circuit

Figure 4 : Driver Voltage Waveforms

7/18

ST75185

Figure 5 : Receiver Test Circuit for I

Figure 6 : Receiver Test Circuit for V , V , V

OH OL

Figure 7 : Receiver Test Circuit

8/18

ST75185

Figure 8 : Receiver Voltage Waveforms

NOTE A: The pulse generator has the following characteristics: t = 25µs, PRR = 20KHz, Z = 50 Ω, t = t < 50ns

NOTE B: C includes probe and jig capacitance.

Figure 9 : Driver Voltage Transfer Characteristics

Figure 11 : Device Supply Current vs

Temperature

Figure 10 : Driver Short Circuit Output Current vs

Figure 12 : Driver Output Current vs Output

Free-Air Temperature

Voltage

9/18

ST75185

Figure 13 : Driver Output Slew Rate vs Load

Figure 15 : Receiver Threshold vs Supply

Voltage

Capacitance

Figure 14 : Receiver Threshold vs Temperature

10/18

ST75185

APPLICATION INFORMATION: DIODES ON POWER SUPPLY

Diodes placed in series with the VDD and VSS leads protect the ST75185 in the fault condition in which

the devices output are shorted to ±15V and the power supplies are at low state and provide

low-impedance path to ground (see Figure below).

11/18

ST75185

SO-20 MECHANICAL DATA

mm.

inch

TYP.

DIM.

MIN.

TYP

MAX.

2.65

0.2

MIN.

MAX.

0.104

0.008

0.096

0.019

0.012

0.1

0.004

2.45

0.49

0.32

0.35

0.23

0.014

0.009

0.5

0.020

45˚ (typ.)

12.60

10.00

13.00

10.65

0.496

0.393

0.512

0.419

1.27

0.050

0.450

11.43

7.40

0.50

7.60

1.27

0.75

0.291

0.020

0.300

0.050

0.029

˚ (max.)

PO13L

12/18

ST75185

SSOP20 MECHANICAL DATA

mm.

inch

TYP.

DIM.

MIN.

TYP

MAX.

MIN.

MAX.

0.079

0.05

1.65

0.22

0.09

6.9

0.002

0.065

0.009

0.004

0.272

0.291

0.197

1.75

1.85

0.38

0.25

7.5

0.069

0.073

0.015

0.010

0.295

0.323

0.220

7.2

7.8

0.283

0.307

7.4

8.2

5.3

5.6

0.209

0.65 BSC

4˚

0.0256 BSC

4˚

0˚

8˚

0˚

8˚

0.55

0.75

0.95

0.022

0.030

0.037

PIN 1 IDENTIFICATION

0061436C

13/18

ST75185

TSSOP20 MECHANICAL DATA

mm.

inch

TYP.

DIM.

MIN.

TYP

MAX.

1.2

MIN.

MAX.

0.047

0.006

0.041

0.012

0.0079

0.260

0.176

0.05

0.8

0.15

1.05

0.30

0.20

6.6

0.002

0.031

0.007

0.004

0.252

0.244

0.169

0.004

0.039

0.19

0.09

6.4

6.5

6.4

0.256

0.252

6.2

6.6

4.3

4.4

4.48

0.173

0.65 BSC

0.0256 BSC

0˚

8˚

0˚

8˚

0.45

0.60

0.75

0.018

0.024

0.030

PIN 1 IDENTIFICATION

0087225C

14/18

ST75185

Tape & Reel SO-20 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

30.4

1.197

0.433

0.528

0.130

0.161

0.476

10.8

13.2

3.1

0.425

0.520

0.122

0.153

0.468

13.4

3.3

3.9

4.1

11.9

12.1

15/18

ST75185

Tape & Reel SSOP20 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

8.6

0.882

0.339

0.311

0.122

0.161

0.476

8.4

7.7

0.331

0.303

0.114

0.153

0.468

7.9

2.9

3.1

3.9

4.1

11.9

12.1

16/18

ST75185

Tape & Reel TSSOP20 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

0.882

0.276

0.280

0.075

0.161

0.476

6.8

6.9

0.268

0.272

0.067

0.153

0.468

7.1

1.9

4.1

12.1

1.7

3.9

11.9

17/18

ST75185

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.

STMicroelectronics GROUP OF COMPANIES

Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco

Singapore - Spain - Sweden - Switzerland - United Kingdom - United States.

18/18

ST75185CTR相关文章

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ST75185CTR产品参数

型号:	ST75185CTR
Brand Name：	STMicroelectronics
是否Rohs认证：	符合
生命周期：	Active
IHS 制造商：	STMICROELECTRONICS
零件包装代码：	TSSOP
包装说明：	ROHS COMPLIANT, TSSOP-20
针数：	20
Reach Compliance Code：	compliant
ECCN代码：	EAR99
HTS代码：	8542.39.00.01
Factory Lead Time：	16 weeks
风险等级：	0.77
Samacsys Confidence：	3
Samacsys Status：	Released
Samacsys PartID：	180068
Samacsys Pin Count：	20
Samacsys Part Category：	Integrated Circuit
Samacsys Package Category：	Small Outline Packages
Samacsys Footprint Name：	TSSOP20
Samacsys Released Date：	2015-04-13 16:53:29
Is Samacsys：	N
其他特性：	SUPPORT DATA RATES UPTO 120K BITS/S
差分输出：	NO
驱动器位数：	3
高电平输入电流最大值：	0.00001 A
输入特性：	SCHMITT TRIGGER
接口集成电路类型：	LINE TRANSCEIVER
接口标准：	EIA-232-E; TIA-232-E; V.28
JESD-30 代码：	R-PDSO-G20
JESD-609代码：	e3
长度：	6.5 mm
湿度敏感等级：	3
标称负供电电压：	-9 V
功能数量：	3
端子数量：	20
最高工作温度：	70 °C
最低工作温度：
最小输出摆幅：	12 V
最大输出低电流：	0.01 A
封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP
封装等效代码：	TSSOP20,.25
封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	260
电源：	5,+-7.5/+-15 V
认证状态：	Not Qualified
最大接收延迟：	1000 ns
接收器位数：	5
座面最大高度：	1.2 mm
子类别：	Line Driver or Receivers
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
电源电压1-最大：	15 V
电源电压1-分钟：	7.5 V
电源电压1-Nom：	9 V
表面贴装：	YES
技术：	BIPOLAR
温度等级：	COMMERCIAL
端子面层：	Matte Tin (Sn) - annealed
端子形式：	GULL WING
端子节距：	0.65 mm
端子位置：	DUAL
处于峰值回流温度下的最长时间：	40
最大传输延迟：	500 ns
宽度：	4.4 mm
Base Number Matches：	1

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产品型号ST75185CTR的概述

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