sp304ct Exar Corporation, sp304ct Datasheet - Page 9

• Manufacturer Part Number: sp304ct
• Description: Rs-232/rs-422 Line Drivers/receivers
• Manufacturer: Exar Corporation

Two RS-232 line drivers and receivers, and a
single RS-422 line driver and receiver. At first
glance, this is the same configuration as that in
Figure 4. Note however that functions are acti-
vated on the opposite channels.
SIGNAL PROCESSING EXCELLENCE
Corporation
Two-Channel Duplex RS-232 &
One-Channel Duplex RS-422
RS-422 LINE DRIVER
RS-422 RECEIVER
RS-232 LINE DRIVERS
RS-232 RECEIVER
TIB
TIB
TIA
ROB
ROB
Opposite Drivers
ROA
1
2
1
1
2
SELECT A = 1
SELECT B = 0
LB = 1
1
TOB
TOB
TOA
TOA
RIB
RIB
RIA
RIA
FIGURE 5: SP304 CONFIGURATIONS
1
2
1
2
1
2
1
2
Two RS-422 line drivers and two RS-422
receivers.
Two-Channel Duplex RS-422
RS-422 LINE DRIVERS
RS-422 RECEIVERS
ROA
ROB
TIA
TIB
SELECT A = 1
SELECT B = 1
LB = 1
1
1
1
1
TOA
TOA
TOB
TOB
RIA
RIA
RIB
RIB
1
2
1
2
1
2
1
2
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