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SP489CT
® SP488/489 Quad RS-485/RS-422 Line Receivers s s s s s s s s RS-485 or RS-422 Applications Quad Differential Line Receivers Tri–state Output Control 120ns 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 Now available in Lead Free DESCRIPTION… The SP488 and SP489 are low–power quad differential line receivers meeting RS-485 and RS-422 standards. The SP488 features a common receiver enable control; the SP489 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. 16 VCC 15 RI4B 14 RI4A 4 13 RO4 RO2 5 12 EN3/EN4 RO3 RI2A 6 11 RO3 10 RI3A RI2B 7 10 RI3A 9 RI3B GND 8 9 RI3B 16 VCC RI1B 1 15 RI4B RI1A 2 14 RI4A RO1 3 4 13 RO4 EN1/EN2 RO2 5 12 EN RI2A 6 11 RI2B 7 GND 8 RI1B 1 RI1A 2 RO1 3 EN SP488/489 SP488 1 4 2 3 SP489 1 4 2 Quad RS-485/RS-422 Line Receivers 1 3 © Copyright 2000 Sipex Corporation
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