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SP488E/489EDS/07

SP488E/489E Enhanced Quad RS-485/RS-422 Line Receivers

© Copyright 2000 Sipex Corporation

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.

SP488E and SP489E

Enhanced Quad RS-485/RS-422 Line Receivers

SP488E

EN

GND

EN

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

4

3

2

SP489E

GND

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

4

3

2

®