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SN75LP1185

更新时间： 2024-11-05 22:53:31
品牌 Logo 应用领域
德州仪器 - TI 驱动器
页数 文件大小 规格书
8页 119K
描述
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS

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SN75LP1185 数据手册

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SN75LP1185  
LOW-POWER MULTIPLE RS-232 DRIVERS AND RECEIVERS  
SLLS335 – JANUARY 1999  
DB, DW, N, OR PW PACKAGE  
Single-Chip TIA/EIA-232-F Interface for  
IBM PC/AT Serial Port  
(TOP VIEW)  
Designed to Transmit and Receive 4-µs  
Pulses (Equivalent to 256 kbit/s)  
V
V
CC  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
DD  
RA1  
RA2  
RA3  
DY1  
DY2  
RA4  
DY3  
RA5  
RY1  
RY2  
RY3  
DA1  
DA2  
RY4  
DA3  
RY5  
GND  
Less Than 21-mW Power Consumption  
Wide Supply-Voltage Range, 4.75 V to 15 V  
Driver Output Slew Rates Are Internally  
Controlled to 30 V/µs Max  
Receiver Input Hysteresis, 1000 mV Typ  
TIA/EIA-232-F Bus-Pin ESD Protection  
Exceeds:  
– 15-kV, Human-Body Model  
– IEC1000-4-2 Level-4 Compliant  
V
SS  
Three Drivers and Five Receivers Meet or  
Exceed the Requirements of TIA/EIA-232-F  
and ITU V.28  
Complements the SN75LP196  
Designed to Replace the Industry-Standard  
SN75185 and SN75C185 With the Same  
Flow-Through Pinout  
Package Options Include Plastic  
Small-Outline (DW), Shrink Small-Outline  
(DB), Thin Shrink Small-Outline (PW), and  
Dual-In-Line (N) Packages  
description  
The SN75LP1185 is a low-power bipolar device containing three drivers and five receivers with 15 kV of ESD  
protection on the bus pins with respect to each other. Bus pins are defined as those pins that tie directly to the  
serial-port connector, including GND. The pinout matches the flow-through design of the industry-standard  
SN75185 and SN75C185. The flow-through pinout of the SN75LP1185 allows easy interconnection of the  
UART and serial-port connector of the IBM PC/AT and compatibles. The SN75LP1185 provides a rugged,  
low-cost solution for this function with the combination of the bipolar processing and 15 kV of ESD protection.  
The SN75LP1185 has internal slew-rate control to provide a maximum rate of change in the output signal of  
30 V/µs. The driver output swing is nominally clamped at ±6 V to enable the higher data rates associated with  
this device and to reduce EMI emissions. Even though the driver outputs are clamped, they can handle voltages  
up to ±15 V without damage. All the logic inputs can accept 3.3-V or 5-V input signals.  
The SN75LP1185 complies with the requirements of TIA/EIA-232-F and ITU V.28. 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 SN75LP1185 support rates up to 256 kbit/s.  
The SN75LP1185 is characterized for operation from 0°C to 70°C.  
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 International Business Machines Corporation.  
Copyright 1999, 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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