SP301 Datasheet, PDF (12/18 Pages) Sipex Corporation – RS-232/RS-422 Line Drivers/Receivers

FIGURE 8: SP302 CONFIGURATIONS
Two-Channel Duplex RS-232 &
One-Channel Duplex RS-422
Opposite Drivers
Two RS-232 line drivers and receivers, and a
single RS-422 line driver and receiver. At first
glance, this is the same configuration in Figure
7. Note however that functions are activated on
the opposite channels.
Two-Channel Duplex RS-422
Two RS-422 line drivers and two RS-422
receivers.
TIB₁
TOB₁
TIB₂
TOB₂
RS-232 LINE DRIVERS
RS-232 RECEIVER
ROB₁
RIB₁
ROB₂
RIB₂
TIA₁
TOA₁
TOA₂
RS-422 LINE DRIVER
RS-422 RECEIVER
ROA₁
RIA₁
RIA₂
SELECT A = 1
SELECT B = 0
LB = 1
TIA₁
TOA₁
TOA₂
TOB₁
TIB₁
TOB₂
RS-422 LINE DRIVERS
RS-422 RECEIVERS
ROA₁
RIA₁
RIA₂
ROB₁
RIB₁
RIB₂
SELECT A = 1
SELECT B = 1
LB = 1
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