Corporation

SIGNAL PROCESSING EXCELLENCE

84

Four-Channel Duplex RS-232

Four independent channels of RS-232 line driver

and four channels of RS-232 receiver.

Two-Channel Duplex RS-232 &

One-Channel Duplex RS-422

Two RS-232 line drivers and receivers, and a

single RS-422 line driver and receiver.

FIGURE 4: SP304 CONFIGURATIONS

RS-232 LINE DRIVERS

RS-232 RECEIVERS

SELECT A = 0

SELECT B = 0

LB = 1

RS-422 LINE DRIVER

RS-422 RECEIVER

RS-232 LINE DRIVERS

RS-232 RECEIVERS

SELECT A = 0

SELECT B = 1

LB = 1