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SP503AN Datasheet, PDF (3/13 Pages) Sipex Corporation – Application Note
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DTE-DCE flexibility with the SP503 on a DB-25 serial port
TxD
TxC
DTR
RTS
SCC
RxD
RxC
CTS
DCD
"0" = DTE
"1" = DCE
1Y 1A
2Y 1B
2A
3Y
2B
4Y 3A
3B
4A
SEL 4B
RDEC0
RDEC1
RDEC2
RDEC3
TDEC0
TDEC1
TDEC2
TDEC3
SP503
DTE
Config.
14 TxD
15 TxC
13 DTR
16 RTS
1
20
RxD
80
RxC
CTS
19 DCD
78 DSR
21 RI
79 SCT
24 LL
17 RL
22 ST
SD(A) 61
SD(B) 59
TT(A) 63
TT(B) 65
TR(A) 58
TR(B) 56
RS(A) 54
52
RS(B) 70
RD(A)
RD(B) 71
RT(A) 37
38
RT(B)
CS(A) 66
67
CS(B)
RR(A)
RR(B)
35
36
DM(A) 68
DM(B) 69
SCT(A) 76
SCT(B) 77
39
IC(A)
IC(B) 40
LL(A)
LL(B)
51
49
ST(A) 42
44
ST(B) 47
RL(A)
2 3 4 5 12 11 10 9
2 3 4 5 12 11 10 9
14 TxD
SD(A) 61
SD(B) 59
15 TxC
13 DTR
TT(A) 63
TT(B) 65
TR(A) 58
16 RTS
1
RxD
TR(B) 56
RS(A) 54
RS(B) 52
20
80
RxC
CTS
19 DCD
70
RD(A) 71
RD(B)
RT(A) 37
RT(B) 38
78 DSR
21 RI
79 SCT
24 LL
CS(A) 66
CS(B) 67
RR(A) 35
RR(B) 36
DM(A) 68
DM(B) 69
17 RL
22 ST
SCT(A) 76
SCT(B) 77
IC(A) 39
IC(B) 40
SP503
LL(A) 51
DCE
LL(B) 49
ST(A) 42
ST(B) 44
Config.
RL(A) 47
DB-25
Connector
3
16
17
9
6
22
5
13
2
14
24
11
4
19
18
20
23
21
8
10
15
12
22
7
1
SP503AN
SP503 Application Note
3
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