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SP503 View Datasheet(PDF) - Exar Corporation

Part Name
Description
Manufacturer
SP503
Exar
Exar Corporation Exar
SP503 Datasheet PDF : 28 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
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)
tPZL; Enable to Output LOW
190
tPZH; Enable to Output HIGH
130
tPLZ; Disable from Output LOW
270
tPHZ; Disable from Output HIGH
400
DIFFERENTIAL MODE (RS-422, RS-485, V.35)
tPZL; Enable to Output LOW
100
tPZH; Enable to Output HIGH
100
tPLZ; Disable from Output LOW
130
tPHZ; Disable from Output HIGH
140
Notes:
1.
Measured from 2.5V of RIN to 2.5V of ROUT.
2. Measured from one–half of RIN to 2.5V of ROUT.
3. Measured from 1.5V of TIN to one–half of TOUT.
4. Measured from 2.5V of RO to 0V of A and B.
UNITS
CONDITIONS
ns
3kpull–up to output
ns
3kpull–down to output
ns
5V to input
ns
GND to input
ns
3kpull–up to output
ns
3kpull–down to output
ns
5V to input
ns
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.
SP503_101_101508
SP503 Multiprotocol Transceiver
6
© Copyright 2008 Exar Corporation

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