LT1381

PRODUCTION

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

Part Models: 4
1ku List Price: Starting From $2.52

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Overview

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 R_L = 3k, C_L = 2500pF
250kBaud Operation for R_L = 3k, C_L = 1000pF
Rugged Bipolar Design
Outputs Assume a High Impedance State When Powered Down
Absolutely No Latchup
Available in Narrow SO Package

The LT1381 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.

Applications

Portable Computers
Battery-Powered Systems
Power Supply Generator
Terminals
Modems

Part Models: 4
1ku List Price: Starting From $2.52

Documentation

Data Sheet 1

LT1381: Low Power 5V RS232 Dual Driver/Receiver with 0.1µF Capacitors Data Sheet 08/27/2007

Reliability Data 1

R001 Reliability Data 03/23/2018

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.

Part Model	Pin/Package Drawing	Documentation	CAD Symbols, Footprints, and 3D Models
LT1381CS#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1381CS#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1381IS#PBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LT1381IS#TRPBF	16-Lead SOIC (Narrow 0.15 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Oct 8, 2024 - 24_0236 Migrating Bottom Trace Code Marking to Top Side Laser Marking for SOIC_N Package
		PCN24_0236_Form Material_Report Marking Comparison Delta Qualification Matrix
LT1381CS#PBF	PRODUCTION
LT1381CS#TRPBF	PRODUCTION
LT1381IS#PBF	PRODUCTION
LT1381IS#TRPBF	PRODUCTION
Oct 12, 2022 - 22_0252 Epoxy Change from Henkel 8290 to 8290A for 16-Lead SOIC Package
		PCN22_0252_Form Material_Report Qualification Results Summary
LT1381CS#PBF	PRODUCTION
LT1381CS#TRPBF	PRODUCTION
LT1381IS#PBF	PRODUCTION
LT1381IS#TRPBF	PRODUCTION
Aug 6, 2022 - 22_0173 Laser Top Mark Conversion for SOICN14 and SOICN16 Packages Assembled on ADPG [PNG]
		PCN22_0173_Form Material_Report Delta Qualification Matrix
LT1381CS#PBF	PRODUCTION
LT1381CS#TRPBF	PRODUCTION
LT1381IS#PBF	PRODUCTION
LT1381IS#TRPBF	PRODUCTION

This is the most up-to-date revision of the Data Sheet.

Hardware Ecosystem

Parts	Product Life Cycle	Description
Interface Transceivers & Isolators 1
LTM2882	PRODUCTION	Dual Isolated RS232 μModule Transceiver + Power

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