SP490E

SP490E / SP491E Enhanced Full-Duplex RS-485 Transceivers 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 NSOIC packages for operation over the commercial and industrial temperature ranges. The SP491E is available in 14-pin NSOIC packages for operation over the commercial and industrial temperature ranges. 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 Ordering Information - Back Page Block Diagrams VCC 1 R2 D...