SP488 Datasheet, PDF (1/6 Pages) Sipex Corporation – Quad RS-485/RS-422 Line Receivers

®
SP488/489
Quad RS-485/RS-422 Line Receivers
s RS-485 or RS-422 Applications
s Quad Differential Line Receivers
s Tri–state Output Control
s 120ns Typical Receiver Propagation
Delays
s –7V to +12V Common Mode Input
Range
s 1mA Supply Current
s Single +5V Supply Operation
s Pin Compatible with SN75173,
SN75175, LTC488 and LTC489
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.
RI₁B 1
RI₁A 2
1
RO₁ 3
EN 4
RO₂ 5
RI₂A 6
2
RI₂B 7
GND 8
SP488 ^{16 V}CC
RI₁B 1
15 RI₄B
RI₁A 2
1
4
14 RI₄A
RO₁ 3
13 RO₄ ^EN1^/EN2 ⁴
12 EN
RO₂ 5
11 RO₃
RI₂A 6
2
3
10 RI₃A
RI₂B 7
9 RI₃B
GND 8
SP489 ^{16 V}CC
15 RI₄B
4
14 RI₄A
13 RO₄
12 EN₃/EN₄
11 RO₃
3
10 RI₃A
9 RI₃B
SP488/489
Quad RS-485/RS-422 Line Receivers
1
© Copyright 2000 Sipex Corporation