LTC1334

PRODUCTION

Single 5V RS232/RS485 Multiprotocol Transceiver

Part Models: 10
1ku List Price: Starting From $8.00

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Overview

Four RS232 Transceivers or Two RS485 Transceivers on One Chip
Operates from a Single 5V Supply
Withstands Repeated ±10kV ESD Pulses
Uses Small Charge Pump Capacitors: 0.1µF
Low Supply Current: 8mA Typical
10µA Supply Current in Shutdown

Self-Testing Capability in Loopback Mode
Power-Up/Down Glitch-Free Outputs
Driver Maintains High Impedance in Three-State, Shutdown or with Power Off
Thermal Shutdown Protection
Receiver Inputs Can Withstand ±25V

The LTC1334 is a low power CMOS bidirectional transceiver featuring two reconfigurable interface ports. It can be configured as two RS485 differential ports, as two dual RS232 single-ended ports or as one RS485 differential port and one dual RS232 single-ended port. An onboard charge pump requires four 0.1µF capacitors to generate boosted positive and negative supplies, allowing the RS232 drivers to meet the RS232 ±5V output swing requirement with only a single 5V supply. A shutdown mode reduces the I_CC supply current to 10µA.

The RS232 transceivers are in full compliance with RS232 specifications. The RS485 transceivers are in full compliance with RS485 and RS422 specifications. All interface drivers feature short-circuit and thermal shutdown protection. An enable pin allows RS485 driver outputs to be forced into high impedance, which is maintained even when the outputs are forced beyond supply rails or power is off. Both driver outputs and receiver inputs feature ±10kV ESD protection. A loopback mode allows the driver outputs to be connected back to the receiver inputs for diagnostic self-test.

Applications

Low Power RS485/RS422/RS232/EIA562 Interface
Software-Selectable Multiprotocol Interface Port
Cable Repeaters
Level Translators

Part Models: 10
1ku List Price: Starting From $8.00

Documentation

Data Sheet 1

LTC1334: Single 5V RS232/RS485 Multiprotocol Transceiver Data Sheet 08/30/2007

Reliability Data 1

R277 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
LTC1334CG#PBF	28-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334CG#TRPBF	28-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334CNW#PBF	28-Lead PDIP (Wide 0.6 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334CSW#PBF	28-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334CSW#TRPBF	28-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334IG#PBF	28-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334IG#TRPBF	28-Lead SSOP	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334INW#PBF	28-Lead PDIP (Wide 0.6 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334ISW#PBF	28-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys
LTC1334ISW#TRPBF	28-Lead SOIC (Wide 0.3 Inch)	Material Declaration Reliablity Data Package Resources	Ultra Librarian SamacSys

Part Models	Product Lifecycle	PCN

Aug 6, 2022 - 22_0171 Laser Top Mark Conversion for SSOP Packages Assembled in PNG
		PCN22_0171_Form Material_Report Delta Qualification Matrix
LTC1334CG#PBF	PRODUCTION
LTC1334CG#TRPBF	PRODUCTION
LTC1334IG#PBF	PRODUCTION
LTC1334IG#TRPBF	PRODUCTION
Mar 7, 2019 - 19_0046 Assembly Transfer of 18,20,24,28 Lead PDIP to Cirtek
		PCN19_0046_Form Material_Report Detailed Change Description Qualification Results Summary
LTC1334CNW#PBF	PRODUCTION
LTC1334INW#PBF	PRODUCTION
Aug 10, 2022 - 22_0176 Laser Top Mark Conversion for SOIC_W Packages Assembled in ADPG [PNG] and UTL
		PCN22_0176_Form Material_Report Delta Qualification Matrix
LTC1334CSW#PBF	PRODUCTION
LTC1334CSW#TRPBF	PRODUCTION
LTC1334ISW#PBF	PRODUCTION
LTC1334ISW#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
LTC2872	PRODUCTION	RS232/RS485 Dual Multiprotocol Transceiver with Integrated Termination

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