SP3243U transceivers equivalent, high speed intelligent +3.0v to +5.5v rs-232 transceivers.
EN C1+ V+ C1C2+ C2VT2OUT R2IN 1 2 3 4 5 6 7 8 9 SP3223U 20 SHUTDOWN 19 18 17 16 15 14 VCC GND T1OUT R1IN R1OUT ONLINE 1.
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