SP491E

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. BL...