SP505 WAN Multi-Mode Serial Transceiver • +5V Only Operation 80 CTS 79 SCT 78 DSR 77 SCT(b) 76 SCT(a) 75 GND 74 VCC 73 VCC 72 GND 71 RD(b) 70 RD(a) 69 DM(b) 68 DM(a) 67 CS(b) 66 CS(a) 65 TT(b) 64 GND 63 TT(a) 62 VCC 61 SD(a) • Seven (7) Drivers and Seven (7) Receivers • Driver and Receiver Tri-state Control • Internal Transceiver Termination Resistors for V.
11 and V.
35 Protocols • Loopback Self-Test Mode • Software Selectable Protocol Selection • Interface Modes Supported: • RS-232 (V.
28) • X.
21/RS-422 (V.
11) • EIA-530 (V.
10 & V.
11) • EIA-530A (V.
10 & V.
11) • RS-449 (V.
10 & V.
11) • V.
35 (V.
35 & V.
28) • V.
36 (V.
10 & V.
11) • RS-485 (un-terminated V.
11) • Improved ...

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