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SN75LBC187DBR PDF预览

SN75LBC187DBR

更新时间： 2024-09-13 13:13:51
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德州仪器 - TI 驱动器泵
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SN75LBC187DBR 数据手册

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SN75LBC187  
MULTICHANNEL EIA-232 DRIVER/RECEIVER  
WITH CHARGE PUMP  
SLLS130C – SEPTEMBER 1991 – REVISED MAY 1995  
Single IC and Single 5-V Supply Interface  
for Serial Communication Ports  
DB PACKAGE  
(TOP VIEW)  
Meets or Exceeds the Requirements of  
ANSI Standards EIA/TIA-232-E-1991,  
EIA/TIA-562, and ITU Recommendation V.28  
DY3  
DY1  
DY2  
RA2  
RY2  
DA2  
DA1  
RY1  
RA1  
GND  
NC  
1
28  
27  
26  
25  
24  
23  
22  
21  
RA3  
2
RY3  
3
Switched-Capacitor Voltage Converter  
Eliminates Need for ±12-V Supplies  
SHUTDOWN  
NC  
4
5
Voltage Converter Operates With Low  
Capacitance . . . 0.1 µF Min  
RA4  
6
RY4  
7
Designed for Data Rates up to 120 kb/s  
Over 3-m Cable  
NC  
8
9
20 DA3  
Available in Shrink Small-Outline 25-mil-  
Pitch Package  
10  
11  
12  
13  
14  
19  
18  
17  
16  
15  
RY5  
RA5  
V
CC  
C1+  
V
Shutdown Mode to Save Power When Not  
in Use  
SS  
V
C2–  
C2+  
DD  
C1–  
±30-V Receiver Input Voltage Range  
LinBiCMOS Process Technology  
NC–No internal connection  
Applications  
– Laptop or Notebook Computers  
– Portable Terminals  
– Single-Board Computers  
– Portable Test Equipment  
description  
The SN75LBC187 is a low-power LinBiCMOS device containing three drivers, five receivers, and a  
switched-capacitor voltage converter. The SN75LBC187 provides a single chip and single 5-V supply interface  
between the asynchronous communications element and the serial port connector of the data terminal  
equipment (DTE). This device has been designed to conform to ANSI Standards EIA/TIA-232-E, EIA/TIA-562,  
and ITU recommendation V.28.  
The switched-capacitor voltage converter of the SN75LBC187 uses four small external capacitors to generate  
the positive and negative voltages required by EIA/TIA-232-E (and V.28) line drivers from a single 5-V input.  
The drivers feature output slew-rate limiting to eliminate the need for external filter capacitors. The receivers  
can accept ±30 V without damage. The device also features a reduced power or shutdown mode that cuts the  
quiescent power to the IC when not transmitting data between the CPU and peripheral.  
The SN75LBC187 has been designed using LinBiCMOS technology and cells contained in the Texas  
Instruments LinASIC library. The SN75LBC187 is characterized for operation from 0°C to 70°C.  
NOTE:  
This device includes circuit designs and process technologies that have patents pending.  
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.  
LinBiCMOS and LinASIC are a trademarks of Texas Instruments Incorporated.  
Copyright 1995, 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  
12345678

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SN75LBC187DBR 替代型号

型号 品牌 替代类型 描述 数据表
MAX211IDBG4 TI

类似代替

 5-V MULTICHANNEL RS-232 LINE DRIVER/RECEVER
MAX211CDB TI

类似代替

 5-V MULTICHANNEL RS-232 LINE DRIVER / RECEIVER WITH +-15-KV ESD PROTECTION
MAX211IDB TI

类似代替

 5-V MULTICHANNEL RS-232 LINE DRIVER / RECEIVER WITH +-15-KV ESD PROTECTION

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