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SP303 Datasheet(PDF) 3 Page - Sipex Corporation |
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SP303 Datasheet(HTML) 3 Page - Sipex Corporation |
3 / 8 page 71 Corporation SIGNAL PROCESSING EXCELLENCE PINOUT PIN ASSIGNMENTS – RS232 MODE Pin 1 — V DD — +12V Power Supply. Pin 2 — R INA2 — DSR; RS-232 input. Pin 3 — R INA1 — RXD; RS-232 input. Pin 4 — N.C. — No Connection. Pin 5 — T OUTA2 — RTS; RS-232 output. Pin 6 — T OUTA1 — TXD; RS-232 output. Pin 7 — SEL A — Select A; used with Select B (pin 8) to select operating mode. Logic “0” on both SEL A and SEL B selects RS-232 mode; logic “1” on both SEL A and SEL B selects AppleTalk™ mode. Pin 8 — SEL B — Select B; used with Select A (pin 7) to select operating mode. Logic “0” on both SEL A and SEL B selects RS-232 mode; logic “1” on both SEL A and SEL B selects AppleTalk™ mode. Pin 9— T OUTB1— DTR; RS-232 output. Pin 10 — T OUTB2 — Rl; RS-232 output. Pin 11 — N.C. — No Connection. Pin 12— R INB1— CTS; RS-232 input. Pin 13 — N.C. — No Connection. Pin 14 — GND — Signal ground. Connected to logic and chasis ground. Pin 15 — V EE — –12V Power Supply. Pin 16 — N.C. — No Connection. Pin 17 — R OUTB1 — CTS; TTL Output to UART. Pin 18 — N.C. — No Connection. Pin 19 — T OUTB2 — Rl; TTL input from UART. Pin 20 — T INB1 — DTR; TTL input from UART. Pin 21 — N.C. — No Connection. Pin 22 — TxEN — Transmit Enable; Only functional in Mac Mode. Pin 23 — T INA1 — TXD; TTL input from UART. Pin 24 — N.C. — No Connection. Pin 25 — N.C. — No Connection. SPECIFICATIONS (T MIN ≤TA ≤TMAX and nominal supply voltages unless otherwise noted) PARAMETER MIN. TYP. MAX. UNIT CONDITIONS ENVIRONMENTAL AND MECHANICAL Operating Temperature 0 +70 °C Storage Temperature –65 +150 °C Package 28–pin SOIC Note: 1. RS-232 Mode, SELA = SELB = GND. 2. V OUT from +3V to –3V or –3V to +3V. 3. Macintosh™ AppleTalk™ Mode, SELA = SELB = +5V. 4. Leakage current specification applies to both TxDO– and TxDO+; T A=+25°C only. 5. From 10% to 90% of steady state. 6. This is an absolute maximum rating. Normal operating levels are V IN ≤ 5V. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VDD RINA2 RINA1 N.C. TOUTA2 TOUTA1 SELECTA SELECTB TOUTB1 TOUTB2 N.C. RINB1 RINB2 GND VCC ROUTA2 ROUTA1 N.C. TINA2 TINA1 TXEN N.C. TINB1 TINB2 N.C. ROUTB1 ROUTB2 VEE SP303 |
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