SP339B Datasheet, PDF (5/23 Pages) Exar Corporation – TRANSCEIVER WITH INTERNAL TERMINATION

SP339B
REV. 1.0.0
RS-232/RS-485/RS-422 TRANSCEIVER WITH INTERNAL TERMINATION
SUGGESTED DB9 CONNECTOR PINOUT
DB9
Pin
RS-232
RS-485/422
Full Duplex
RS-485
Half Duplex
1
DCD
TX-
Data-
2
RXD
TX+
Data+
3
TXD
RX+
4
DTR
RX-
5
Ground
6
DSR
7
RTS
8
CTS
9
RI
5