SP503CF datasheet(6/29 Pages) SIPEX

6 / 29 page

Date: 7/29/04

SP503 Multiprotocol Transceiver

OTHER AC CHARACTERISTICS

(Typical @ 25°C and nominal supply voltages unless otherwise noted)

PARAMETER

MIN.

TYP.

MAX.

UNITS

CONDITIONS

DELAY TIME FROM ENABLE MODE TO TRI–STATE MODE

SINGLE–ENDED MODE (RS-232, RS-423)

PZL; Enable to Output LOW

190

3kΩ pull–up to output

PZH; Enable to Output HIGH

130

3kΩ pull–down to output

PLZ; Disable from Output LOW

270

5V to input

PHZ; Disable from Output HIGH

400

GND to input

DIFFERENTIAL MODE (RS-422, RS-485, V.35)

PZL; Enable to Output LOW

100

3kΩ pull–up to output

PZH; Enable to Output HIGH

100

3kΩ pull–down to output

PLZ; Disable from Output LOW

130

5V to input

PHZ; Disable from Output HIGH

140

GND to input

Notes:

Measured from 2.5V of R

IN to 2.5V of ROUT.

Measured from one–half of R

IN to 2.5V of ROUT.

Measured from 1.5V of T

IN to one–half of TOUT.

Measured from 2.5V of R

O to 0V of A and B.

PINOUT…

RxD 1

RDEC0 2

RDEC1 3

RDEC2 4

RDEC3 5

TTEN 6

SCTEN 7

VCC 8

TDEC3 9

TDEC2 10

TDEC1 11

TDEC0 12

DTR 13

TxD 14

TxC 15

RTS 16

RL 17

NC 18

DCD 19

RxC 20

60 GND

59 SD(b)

58 TR(a)

57 GND

56 TR(b)

55 VCC

54 RS(a)

53 GND

52 RS(b)

51 LL(a)

50 GND

49 LL(b)

48 VCC

47 RL(a)

46 GND

45 RL(b)

44 ST(b)

43 GND

42 ST(a)

41 VCC

SP503

PIN ASSIGNMENTS…

CLOCK AND DATA GROUP

Pin 1 — RxD — Receive Data; TTL output,

sourced from RD(a) and RD(b) inputs.

Pin 14 — TxD — TTL input ; transmit data

source for SD(a) and SD(b) outputs.

Pin 15 — TxC — Transmit Clock; TTL input for

TT driver outputs.

Pin 20 — RxC — Receive Clock; TTL output

sourced from RT(a) and RT(b) inputs.

Pin 22 — ST — Send Timing; TTL input; source

for ST(a) and ST(b) outputs.

Pin 37 — RT(a) — Receive Timing; analog

input, inverted; source for RxC.

Pin 38 — RT(b) — Receive Timing; analog

input, non-inverted; source for RxC.

Pin 42 — ST(a) — Send Timing; analog output,

inverted; sourced from ST.

Pin 44 — ST(b) — Send Timing; analog output,

non-inverted; sourced from ST.

Pin 59 — SD(b) — Analog Out — Send data,

non-inverted; sourced from TxD.

Pin 61 — SD(a) — Analog Out — Send data,

inverted; sourced from TxD.

Pin 63 — TT(a) — Analog Out — Terminal

Timing, inverted; sourced from TxC

Pin 65 — TT(b) — Analog Out — Terminal

Timing, non–inverted; sourced from TxC.

Pin 70 — RD(a) — Receive Data, analog input;

inverted; source for RxD.

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