SP491EEP-L Datasheet, PDF (1/12 Pages) Exar Corporation – Enhanced Full Duplex RS-485 Transceivers

SP490E/491E
Enhanced Full Duplex RS-485 Transceivers
FEATURES
• +5V Only
• Low Power BiCMOS
• Driver/Receiver Enable (SP491E)
• RS-485 and RS-422 Drivers/Receivers
• Pin Compatible with LTC490 and
SN75179 (SP490E)
• Pin Compatible with LTC491 and
SN75180 (SP491E)
• Improved ESD Specifications:
±15kV Human Body Model
±15kV IEC61000-4-2 Air Discharge
Now Available in Lead Free Packaging
DESCRIPTION
The SP490E is a low power differential line driver/receiver meeting RS-485 and RS-422
standards up to 10Mbps. The SP491E is identical to the SP490E with the addition of driver
and receiver tri-state enable lines. Both products feature ±200mV receiver input sensitivity,
over wide common mode range. The SP490E is available in 8-pin plastic DIP and 8-pin
NSOIC packages for operation over the commercial and industrial temperature ranges.
The SP491E is available in 14-pin DIP and 14-pin NSOIC packages for operation over the
commercial and industrial temperature ranges.
BLOCK DIAGRAMS
SP490E
SP491E
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • [phone] • www.exar.com

SP490E,491E_101_052413