LT1381 Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors

The LT®1381 is a dual RS232 driver/receiver pair with integral charge pump to generate RS232 voltage levels from a single 5V supply. The circuit features rugged bipolar design to provide operating fault tolerance and ESD protection unmatched by competing CMOS designs. Using only 0.1µF external capacitors, the circuit consumes only 40mW of power and can operate to 120kbaud even while driving heavy capacitive loads. New ESD structures on the chip allow the LT1381 to survive multiple ±10kV strikes, eliminating the need for costly TransZorbs® on the RS232 line pins. Driver outputs are protected from overload and can be shorted to ground or up to ±25V without damage. During power-off conditions, driver and receiver outputs are in a high impedance state, allowing line sharing

产品特点 Features

ESD Protection over ±10kV
Low Cost
Uses Small Capacitors: 0.1µF
CMOS Comparable Low Power: 40mW
Operates from a Single 5V Supply
120kBaud Operation for RL = 3k, CL = 2500pF
250kBaud Operation for RL = 3k, CL = 1000pF
Rugged Bipolar Design
Outputs Assume a High Impedance State When Powered Down
Absolutely No Latchup
Available in Narrow SO Package

应用

Portable Computers
Battery-Powered Systems
Power Supply Generator
Terminals
Modems

典型应用图

参数

LT1381 订购信息和价格参考Package Variations and Pricing

器件型号	封装	引脚	温度	价格 (以 1 ~ 99 片为批量)	价格 (以 1000 片为批量) *
LT1381CS	SO	16	C	$2.33	$1.90
LT1381CS#PBF	SO	16	C	$2.33	$1.90
LT1381CS#TR	SO	16	C		$1.96
LT1381CS#TRPBF	SO	16	C		$1.96
LT1381IS	SO	16	I	$2.75	$2.25
LT1381IS#PBF	SO	16	I	$2.75	$2.25
LT1381IS#TR	SO	16	I		$2.31
LT1381IS#TRPBF	SO	16	I		$2.31

LT1381 数据手册及相关资料下载

数据手册 (英文) : LT1381 - Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors.PDF
设计要点 (英文) : DN14 - Extending the Applications of 5V Powered RS232 Transceivers.PDF
设计要点 (英文) : DN27 - Design Considerations for RS-232 Interfaces.PDF
设计要点 (英文) : DN29 - A Single Supply RS232 Interface for Bipolar A to D Converters.PDF
设计要点 (英文) : DN64 - RS232 Transceivers for Hand Held Computers Withstand 10kV ESD.PDF
设计要点 (英文) : DN71 - Regulator Circuit Generates Both 3.3V and 5V Outputs from 3.3V or 5V to Run Computers and RS232.PDF
设计要点 (英文) : DN75 - RS232 Interface Circuits for 3.3V Systems.PDF
设计要点 (英文) : DN80 - ESD Testing for RS232 Interface Circuits.PDF
可靠性数据 : R068 Reliability Data .PDF
产品选型卡 : LTM2882 - Isolated RS232 + 1W Power.PDF
产品选型卡 : RS232 Quick Guide.PDF