SP504 Datasheet, PDF (29/31 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
Receivers
LL
24
RxD
1
RxC
20
CTS
80
DSR
78
DCD
19
RI
21
SCT
79
TDEC₃—TDEC₀ (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
22µF
DB-37 Connector
4
22
12
30
7
25
17
35
44
47
16
45
51
34
49
SP504CF
70
6
71
37
24
8
38
26
66
9
67
27
68
11
69
29
35
13
36
39
31
15
40
76
5
77
23
see pinout diagram for various ground pins
Note: The SP332 will require clamping di-
odes on the driver outputs to limit the volt-
age to ±6V and comply with the RS-423
driver output specification of V_OC = ±4V to
±6V and V_OUT ≥ ±3.6V with a 450Ω load.
0.1µF
0.1µF
0
1
+5V
5
9
12 ^C1+
V_CC
11 ^C1-
C2+
13 _{C2- SP332}
26
T1
V₊ ¹⁰
V_- ¹⁴
6
27
T2
7
3
28
T3
4
19
R1
15
20
21
24 _{SEL A}
2
SEL B
R2
16
18
R3
17
23
LOOPBACK
8
0.1µF
0.1µF
1
10µF
LL
10
RL ₁₄
TM ₁₈
Figure 29. Adding extra differential and single-ended transceivers using the SP332
Rev: A Date:1/27/04
SP504 Multi–Mode Serial Transceivers
29
© Copyright 2004 Sipex Corporation