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SP504 Datasheet(PDF) 20 Page - Exar Corporation

Part # SP504
Description  WAN Multi-Mode Serial Transceiver
PDF  32 Pages
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

SP504 Datasheet(HTML) 20 Page - Exar Corporation

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Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP504_02_2708
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 50-668-707 • www.exar.com
SP504_02_2708
RD(a) 70
RxD 1
RD(b) 71
RT(a) 37
RxC 20
RT(b) 38
CS(a) 66
CTS 80
CS(b) 67
DM(a) 68
DSR 78
DM (b) 69
RR(a) 35
DCD 19
RR(b) 36
IC(a) 39
RI 21
IC(b) 40
SCT(a) 76
SCT 79
SCTEN 7
SCT(b) 77
14 TxD
61 SD(a)
59 SD(b)
22 ST
42 ST(a)
44 ST(b)
23 STEN
15 TxC
63 TT(a)
65 TT(b)
6 TTEN
13 DTR
58 TR(a)
56 TR(b)
16 RTS
54 RS(a)
52 RS(b)
17 RL
47 RL(a)
45 RL(b)
24 LL
51 LL(a)
49 LL(b)
22µF
22µF
1N5819
V
CC
V
DD
C1-
C2-
V
SS
C1+
C2+
+5V
10µF
27
25
26
31
28
30
22µF
32
External
Latch
5
4
3
2
9
10
11
12
0
1
0
0
0
1
0
0
RS-422 Mode
Input Word
A
B
Charge Pump
A — Receiver Tri-State Circuitry & V.35
terminaiton resistor circuitry for
RxD, RxC & SCT
.
B — Driver Tri-State circuitry &V.35
termination circuitry for TxD,
TxC & ST
.
SP504
(SEE PAGE 12 FOR GROUND PINS)
For V.35 Termination, needs to be connected
for proper V.35 operation. A low on-
resistance (≤1Ω) FET or switch can be used
to connect and disconnect the resistor from
the non-inverting output.
150Ω
150Ω
150Ω
22µF
Note 1
Note 1
Note 1
Note 1
Figure 9. SP504 Typical Operating Circuit



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