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LTC1321ISW, LTC1321S, LTC1322

Table of contents:
Info of LTC1321ISW
Info of LTC1321S
Info of LTC1322

LTC1321ISW, LTC1321S, LTC1322 Selling Leads, Datasheet

MFG:Linear Technology Category:Integrated Circuits (ICs) Package Cooled:SOP D/C:06+

LTC1321ISW, LTC1321S, LTC1322 Datasheet download

Five Points

Part Number: LTC1321ISW

Category: Integrated Circuits (ICs)

MFG: Linear Technology

Package Cooled: SOP

D/C: 06+

Description: IC TXRX RS232/485/EIA562 24-SOIC

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LTC1321ISW Parameters

Technical/Catalog Information	LTC1321ISW
Vendor	Linear Technology
Category	Integrated Circuits (ICs)
Number of Drivers/Receivers	4/4
Type	Transceiver
Voltage - Supply	4.75 V ~ 5.25 V
Package / Case	24-SOIC (7.5mm Width)
Packaging	Tube
Protocol	RS562
Drawing Number	161; 05-08-1620; SW; 16
Lead Free Status	Contains Lead
RoHS Status	RoHS Non-Compliant
Other Names	LTC1321ISW LTC1321ISW

LTC1322 General Description

The LTC1321/LTC1322/LTC1335 are low power CMOS bidirectional transceivers, each featuring two reconfigurable interface ports. Each can be configured as two RS485 differential ports, as two single-ended ports, or as one RS485 differential port and one single-ended port. The LTC1321/LTC1322 can provide RS232 or EIA562 compatible single-ended outputs; the LTC1335 provides EIA562 compatible outputs and additionally includes an output enable pin, allowing the receiver logic level outputs to be three-stated.

The RS232/EIA562 transceivers operate to 120kbaud and are in full compliance with EIA/TIA-562 specification. The RS485 transceivers operate to 10Mbaud and 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 connects the driver outputs back to the receiver inputs for diagnostic self-test.

The LTC1321/LTC1322 can support RS232 voltage levels when 6.5V £ VDD £ 10V and 6.5V ³ VEE ³ 10V. The LTC1335 supports receiver output enable but not RS232 levels. A shutdown mode reduces the ICC supply current

LTC1322 Maximum Ratings

Supply Voltage
VCC ....................................................................... 6.5V
VDD (LTC1321/LTC1322 Only) .............................. 10V
VEE .....................................................................  10V
Input Voltage
Drivers .....................................  0.3V to (VCC + 0.3V)
Receivers ................................................  25V to 25V
ON/OFF, LB, SEL1,
SEL2, OE ..................................  0.3V to (VCC + 0.3V)
Output Voltage
Drivers .....................................................  25V to 25V
Receivers ..................................  0.3V to (VCC + 0.3V)
Output Short-Circuit Duration ......................... Indefinite
Operating Temperature Range
LTC1321C/LTC1322C/LTC1335C ............. 0°C to 70°C
LTC1321I/LTC1322I/LTC1335I .........  40°C to 85°C
Storage Temperature Range ........... 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................ 300°C

LTC1322 Features

LTC1321: 2-EIA562/RS232 Transceivers/2-RS485 Transceivers
LTC1322: 4-EIA562/RS232 Transceivers/2-RS485 Transceivers
LTC1335: 4-EIA562 Transceivers/2-RS485 Transceivers with OE
LTC1321/LTC1322 Have the Same Pinout as SP301/SP302
LTC1335 Features Receiver Three-State Outputs
Low Supply Current: 1mA Typical
15mA Supply Current in Shutdown
120kBaud in EIA/TIA-562 or RS232 Mode
10MBaud in RS485/RS422 Mode
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 I/O Lines Can Withstand ±25V
Withstands Repeated 10kV ESD Pulses

LTC1322 Typical Application

Low Power RS485/RS422/EIA562/RS232 Interface
Cable Repeater
Level Translator

LTC1322 Connection Diagram

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