SP491EN-L/TR Просмотр технического описания (PDF) - Exar Corporation

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SP491EN-L/TR

Full Duplex RS-485 Transceivers

Exar Corporation 

SP490/491

Full Duplex RS-485 Transceivers

FEATURES

• +5V Only

• Low Power BiCMOS

• Driver/Receiver Enable (SP491)

• RS-485 and RS-422 Drivers/Receivers

• Pin Compatible with LTC490 and

SN75179 (SP490)

• Pin Compatible with LTC491 and

SN75180 (SP491)

Now Available in Lead Free Packaging

DESCRIPTION

The SP490 is a low power differential line driver/receiver meeting RS-485 and RS-422

standards up to 5Mbps. The SP491 is identical to the SP490 with the addition of driver and

receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity, over

wide common mode range. The SP490 is available in 8-pin plastic DIP and 8-pin NSOIC

packages for operation over the commercial and industrial temperature ranges. The SP491

is available in 14-pin DIP and 14-pin NSOIC packages for operation over the commercial

and industrial temperature ranges.

BLOCK DIAGRAMS

SP490

SP491

Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510)668-7017 • www.exar.com



SP490,491_101_062711

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