SP488E Datasheet, PDF (1/10 Pages) Sipex Corporation – Enhanced Quad RS-485/RS-422 Line Receivers

®
SP488E and SP489E
Enhanced Quad RS-485/RS-422 Line Receivers
s RS-485 or RS-422 Applications
s Quad Differential Line Receivers
s Receiver Output Disable
s –7V to +12V Common Mode Input Range
s 1mA Supply Current
s Single +5V Supply Operation
s Superior Drop-in Replacement for
SN75173, SN75175, LTC488 and LTC489
s Improved ESD Specifications:
+15kV Human Body Model
+15kV IEC1000-4-2 Air Discharge
+8kV IEC1000-4-2 Contact Discharge
DESCRIPTION…
The SP488E and SP489E are low-power quad differential line receivers that meet the
specifications of RS-485 and RS-422 serial protocols with enhanced ESD performance. The
ESD tolerance has been improved on these devices to over +15kV for both Human Body
Model and IEC1000-4-2 Air Discharge Method. These devices are superior drop-in replace-
ments to Sipex's SP488 and SP489 devices as well as popular industry standards. As with
the original versions, the SP488E features a common receiver enable control and the
SP489E provides independent receiver enable controls for each pair of receivers. Both
feature wide common-mode input ranges. The receivers have a fail-safe features 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
SP488E/489EDS/07
SP488E ^{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
SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers
1
SP489E ^{16 V}CC
15 RI₄B
4
14 RI₄A
13 RO₄
12 EN₃/EN₄
11 RO₃
3
10 RI₃A
9 RI₃B
© Copyright 2000 Sipex Corporation