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SN75185

更新时间： 2024-09-12 22:53:35
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
10页 173K
描述
MULTIPLE RS-232 DRIVERS AND RECEIVERS

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SN75185 数据手册

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SN75185  
MULTIPLE RS-232 DRIVERS AND RECEIVERS  
SLLS181A – DECEMBER 1994 – REVISED NOVEMBER 1998  
DW OR N PACKAGE  
(TOP VIEW)  
Single Chip With Easy Interface Between  
UART and Serial Port Connector of IBM  
PC/AT and Compatibles  
V
V
CC  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
DD  
Three Drivers and Five Receivers Meet or  
Exceed the Requirements of TIA/EIA-232-F  
and ITU v.28 Standards  
RA1  
RA2  
RA3  
DY1  
DY2  
RA4  
DY3  
RA5  
RY1  
RY2  
RY3  
DA1  
DA2  
RY4  
Designed to Support Data Rates Up To  
120 kbps  
ESD Protection Meets or Exceeds 10 kV on  
RS-232 Pins and 5 kV on All Other Pins  
(Human-Body Model)  
13 DA3  
12 RY5  
11  
V
GND  
Pinout Compatible With the SN75C185  
SS  
description  
The SN75185 combines three drivers and five receivers from TI trade-standard SN75188 and SN75189 bipolar  
quadruple drivers and receivers, respectively. The pinout matches the flow-through design of the SN75C185  
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 bipolar circuits and processing of the SN75185  
provides a rugged low-cost solution for this function at the expense of quiescent power and external passive  
components relative to the SN75C185.  
The SN75185 complies with the requirements of the TIA/EIA-232-F and ITU (formerly CCITT) v.28 standards.  
These standards are for data interchange between a host computer and peripheral at signaling rates up to  
20 kbit/s. The switching speeds of the SN75185 are fast enough to support rates up to 120 kbit/s with lower  
capacitive loads (shorter cables). Interoperability at the higher signaling rates cannot be assured unless the  
designer has design control of the cable and the interface circuits at both ends. For interoperability at signaling  
rates to 120 kbit/s, use of TIA/EIA-423-B (ITU v.10) and TIA/EIA-422-B (ITU v.11) standards are recommended.  
The SN75185 is characterized for operation over the temperature range of 0°C to 70°C.  
†
logic symbol  
logic diagram (positive logic)  
2
3
4
5
6
7
8
9
19  
18  
17  
16  
15  
14  
13  
12  
RA1  
RA2  
RY1  
RA1  
RA2  
RA3  
DY1  
DY2  
RA4  
DY3  
RA5  
RY1  
RY2  
RY3  
DA1  
DA2  
RY4  
DA3  
RY5  
RY2  
RA3  
DY1  
RY3  
DA1  
DY2  
RA4  
DY3  
RA5  
DA2  
RY4  
DA3  
RY5  
†
This symbol is in accordance with ANSI/IEEE Std 91-1984  
and IEC Publication 617-12.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
IBM and PC/AT are trademarks of IBM Corporation.  
Copyright 1998, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...10

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