SP503AN Datasheet, PDF (5/13 Pages) Sipex Corporation – Application Note

Female
Connector
Driver / Receiver Connections to a DB-25 Connector
DCE Mode
TxD(B)
TxC(B)
RTS(B)
DTR(B)
TxD(A)
TxC(A)
RTS(A)
DTR(A)
LL
RL
RxD(A)
RxD(B)
DSR(A)
to pin 22 for non-RS-232
CTS(A)
CTS(B)
RxC(A)
RxC(B)
SCT(A)
SCT(B)
RI
DCD(A)
DCD(B)*
SP503CF
70
71
37
38
66
67
68
69
35
36
39
40
76
77
61
59
58
56
54
52
63
65
42
44
47
45
51
49
Receivers
RxD
1
RxC
20
CTS
80
DSR
78
DCD
19
RI
21
SCT
79
TxD ^Drivers
14
DTR
13
RTS
16
TxC
15
ST
22
RL
17
LL
24
* The non-inverting LL driver output is not a
valid driver output for RS-449 and EIA-530.
SP503AN
SP503 Application Note
5
© Copyright 2000 Sipex Corporation