89

Corporation

SIGNAL PROCESSING EXCELLENCE

DESCRIPTION…

The SP306 is a single chip device that offers both RS-422 and RS-423–type serial interfaces. The

device can be programmed to provide two full–duplex channels of either RS-422 or RS-423 via

two mode control pins. The SP306 also features a loopback function that can be activated in any

operating mode. The SP306 is available in a 28–pin SOIC package for operation over the

commercial temperature range.

s Single chip serial transceiver supports

RS-422 or RS-423 interfaces

s Programmable Selection of Interface

s Two Full–Duplex Channels of Either

Interface

s Software–Selectable Mode

s Loopback for Self–Testing

s Short–Circuit Protected

s Surface Mount Packaging

SP306

RS-422/RS-423 Line Drivers/Receivers

LOOPBACK

GND

SUPPLY

+5V +12V –12V

SP306

28

1

15

23

6

5

20

9

10

26

3

2

17

13

14

7

8

SELECT A

SELECT B

12

22

Corporation

SIGNAL PROCESSING EXCELLENCE