SP319 lines equivalent, 20mbps / 5v-only v.35 interface with rs-232 v.28 control lines.
Circuit
+5V
Pinout
80 R1OUT 79 RCOUT3 78 R2OUT 77 RCB3 76 RCA3 75 NC 74 NC 73 VCC 72 GND 71 RCB1 70 RCA1 69 NC 68 R2IN .
The SP319 is a complete V.35 interface transceiver offering 3 drivers and 3 receivers for V.35, and 4 drivers and 4 receivers for RS-232 (V.28). A Sipex patented charge pump allows +5V only low power operation. RS-232 drivers and receivers are specif.
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