SP303 Ver la hoja de datos (PDF) - Signal Processing Technologies
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SP303 Datasheet PDF : 8 Pages
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SPECIFICATIONS
(TMIN ≤TA ≤TMAX and nominal supply voltages unless otherwise noted)
PARAMETER
MIN. TYP.
MAX.
ENVIRONMENTAL AND MECHANICAL
Operating Temperature
0
+70
Storage Temperature
–65
+150
Package
28–pin SOIC
UNIT
°C
°C
CONDITIONS
Note:
1. RS-232 Mode, SELA = SELB = GND.
2.
VOUT 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+; TA=+25°C only.
5. From 10% to 90% of steady state.
6. This is an absolute maximum rating. Normal operating levels are VIN ≤ 5V.
PINOUT
VDD 1
RINA2 2
RINA1 3
N.C. 4
TOUTA2 5
TOUTA1 6
SELECTA 7
SELECTB 8
TOUTB1 9
TOUTB2 10
N.C. 11
RINB1 12
RINB2 13
GND 14
SP303
28 VCC
27 ROUTA2
26 ROUTA1
25 N.C.
24 TINA2
23 TINA1
22 TXEN
21 N.C.
20 TINB1
19 TINB2
18 N.C.
17 ROUTB1
16 ROUTB2
15 VEE
PIN ASSIGNMENTS – RS232 MODE
Pin 1 — VDD — +12V Power Supply.
Pin 2 — RINA2 — DSR; RS-232 input.
Pin 3 — RINA1 — RXD; RS-232 input.
Pin 4 — N.C. — No Connection.
Pin 5 — TOUTA2 — RTS; RS-232 output.
Pin 6 — TOUTA1 — 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— TOUTB1— DTR; RS-232 output.
Pin 10 — TOUTB2 — Rl; RS-232 output.
Pin 11 — N.C. — No Connection.
Pin 12— RINB1— CTS; RS-232 input.
Pin 13 — N.C. — No Connection.
Pin 14 — GND — Signal ground. Connected to
logic and chasis ground.
Pin 15 — VEE — –12V Power Supply.
Pin 16 — N.C. — No Connection.
Pin 17 — ROUTB1 — CTS; TTL Output to
UART.
Pin 18 — N.C. — No Connection.
Pin 19 — TOUTB2 — Rl; TTL input from
UART.
Pin 20 — TINB1 — DTR; TTL input from
UART.
Pin 21 — N.C. — No Connection.
Pin 22 — TxEN — Transmit Enable; Only
functional in Mac Mode.
Pin 23 — TINA1 — TXD; TTL input from
UART.
Pin 24 — N.C. — No Connection.
Pin 25 — N.C. — No Connection.
Corporation
SIGNAL PROCESSING EXCELLENCE
71
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