10/15/02

SP3486/3487 Low Power Quad RS485/422 Line Drivers

© Copyright 2002 Sipex Corporation

1

DESCRIPTION

The SP3486 and the SP3487 are +3.3V low power quad drivers that meet the specifications

of the RS-485 and RS-422 serial protocols. These devices are pin-to-pin compatible with

Sipex's SP486 and SP487 devices as well as popular industry standards. The SP3486 and

SP3487 feature Sipex's BiCMOS process allowing low power operation without sacrificing

performance. The SP3486 and SP3487 meet the electrical specifications of RS-485 and

RS-422 serial protocols up to 10Mbps under load. The SP3486 features a common driver

enable control. The SP3487 provides independent driver enable controls for each pair of

drivers. Both devices feature tri-state outputs and a -7V to +12V common-mode input voltage

range.

■ RS-485 or RS-422 Quad Differential

Line Drivers

■ Operates from a single +3.3V supply

■ Interoperable with +5.0V logic

■ Tri-state Output Control

■ -7V to +12V Common-Mode Input

Voltage Range

■ Common Driver Enable Control (SP3486)

■ Independent Driver Enable Controls for

each pair of Drivers (SP3487)

■ Compatibility with LTC486

and SN75172 (SP3486)

■ Compatibility with LTC487

and SN75174 (SP3487)

1

2

3

4

SP3487

GND

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

1

2

3

4

SP3486

EN

GND

EN

1

2

3

4

5

6

7

8

16

15

14

13

12

11

10

9

SP3486 and SP3487

+3.3V Low Power Quad

RS-485/RS-422 Line Drivers

®