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SP488/489

Quad RS-485/RS-422 Line Receivers

© Copyright 2000 Sipex Corporation

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.

SP488

EN

GND

EN

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

4

3

2

SP489

GND

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

4

3

2

SP488/489

Quad RS-485/RS-422 Line Receivers

®