DESCRIPTION…
The SP488A and SP489A are high speed quad differential line receivers capable of meeting the RS-485 and RS-422 protocols while running at five times the normal transmission rates. The SP488A and SP489A are enhanced versions of Sipexs SP488 and SP489 quad RS-485/RS-422 line receivers. The SP488A features a common receiver enable control; the SP489A provides independent receiver enable controls for each pair of receivers. Both feature tri–state outputs and wide common–mode input range. The receivers have a fail–safe feature which forces a logic “1” output when receiver inputs are left floating. Both are available in 16–pin plastic DIP and SOIC packages.

■ High Speed Versions of Sipexs SP488 & SP489
■ 30Mbps Transmission Rates
■ Quad Differential Line Receivers
■ RS-485 or RS-422 Applications
■ Tri–state Output Control
■ 30ns Typical Receiver Propagation Delays
■ –7V to +12V Common Mode Input Range
■ 1mA Supply Current
■ Single +5V Supply Operation
■ Pin Compatible with SN75173, SN75175, LTC488 and LTC489