SP504 Datasheet, PDF (30/32 Pages) Sipex Corporation – WAN Multi-Mode Serial Transceiver

1N5819
22µF 22µF
+5V
10µF
22µF
25
V_CC
Drivers
TxD
14
DTR
13
RTS
16
TxC
15
ST
22
RL
17
LL
24
Receivers _RxD
1
RxC
20
CTS
80
DSR
78
DCD
19
RI
21
SCT
79
TDEC ₃—TDEC ₀ (pins 9-12)
"1100" for RS-449 mode
RDEC₃ —RDEC₀ (pins 5-2)
27 26 30 28 31 ₃₂
V_{DD C1+} C1-C2+ _C2- V_SS
61
59
58
56
54
52
63
65
42
44
47
45
51
49
70
71
37
38
66
67
68
69
35
36
39
40
76
77
22µF
SP504
see pinout diagram for various ground pins
DB-37 Connector
4
22
12
30
7
25
17
35
16
34
6
24
8
26
9
27
11
29
13
31
15
5
23
Note: The SP332 will require clamping
diodes on the driver outputs to limit the
voltage to +/-6V and comply with the RS-423
driver output specification of Voc = +/-4.0V to
+/-6.0V and VOUT ≥ +/-3.6V with a 450Ω load.
0.1µF
0.1µF
+5V
5
9
12
11
C1+
C1-
C2+
V_CC
13 _{C2- SP332}
26
T1
V₊ ¹⁰
V_- ¹⁴
6
0.1µF
0.1µF
27
T2
7
3
28
T3
4
19
R1
15
20
R2
16
18
21
R3
17
0
1
24 _{SEL A}
23
2 _{SEL B} ^LOOPBACK ₈
1
10 µF
LL ₁₀
RL ₁₄
TM ₁₈
Figure 29. Adding extra differential and single-ended transceivers using the SP332
Exar Corporation 48720 Kato Road, Fremont CA, 94538 • 510-668-7017 • www.exar.com
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SP504_102_121708