Enhanced Full Duplex RS-485 Transceivers
SP490E/491E Enhanced Full Duplex RS-485 Transceivers
FEATURES • +5V Only • Low Power BiCMOS • Driver/Receiver Enabl...
Description
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.
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