SP503 Datasheet, PDF (6/29 Pages) Sipex Corporation – Multiprotocol Transceiver

OTHER AC CHARACTERISTICS
(Typical @ 25°C and nominal supply voltages unless otherwise noted)
PARAMETER
MIN. TYP. MAX.
DELAY TIME FROM ENABLE MODE TO TRI–STATE MODE
SINGLE–ENDED MODE (RS-232, RS-423)
t_PZL; Enable to Output LOW
190
t_PZH; Enable to Output HIGH
130
t_PLZ; Disable from Output LOW
270
t_PHZ; Disable from Output HIGH
400
DIFFERENTIAL MODE (RS-422, RS-485, V.35)
t_PZL; Enable to Output LOW
100
t_PZH; Enable to Output HIGH
100
t_PLZ; Disable from Output LOW
130
t_PHZ; Disable from Output HIGH
140
Notes:
1.
Measured from 2.5V of R_IN to 2.5V of R_OUT.
2.
Measured from one–half of R_IN to 2.5V of R_OUT.
3.
Measured from 1.5V of T_IN to one–half of T_OUT.
4. Measured from 2.5V of R_O to 0V of A and B.
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
CONDITIONS
3kΩ pull–up to output
3kΩ pull–down to output
5V to input
GND to input
3kΩ pull–up to output
3kΩ pull–down to output
5V to input
GND to input
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
SP503
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
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.
Date: 7/29/04
SP503 Multiprotocol Transceiver
6
© Copyright 2004 Sipex Corporation