ISDN S-BUS
IC MFG.
AMD
AM79C30A/79C32A
AT&T/LUCENT
T7250/7256/7259
T7903
MIETEC
MTC-2072
MITEL
MT8930
MOTOROLA
MC145474/145475
MC145574
INPUT/OUTPUT TRANSFORMERS
7117-7121
Units matched to leading transceivers IC’s.
FILTRAN P/N
IC MFG.
NATIONAL
TP3420/3421
SGS THOMSON
ST5420/5421
SIEMENS
PEB 2080/2081/2085
PSB 2186
PEB 2084/2086
YAMAHA
7405B
FILTRAN P/N
7121
7119
7120
7119
7119
7119
7119
7119
7119
7119
7119
7118
7120
MECHANICAL AND SCHEMATIC
(All dimensions in millimetres)
SUGGESTED PAD LAYOUT
SCHEMATIC
7117 - 7121
ELECTRICAL SPECIFICATION @ 25˚C
Turns Ratio
(±2%)
A
7117
7118
7119
7120
7121
1:1
1:1
1:2
1:2.5
1:2
B
1:2
1:1
1:2
1:2.5
1:2
L Pri
(mH MIN)
A&B
22
22
22
22
22
L
L
Sec
(µH MAX)
A
5
5
15
8-40
11
B
15
5
15
8-40
11
C
W/W
(pF MAX)
A&B
100
100
100
100
100
CD Pri
(pF MAX)
A
42
42
80
110
180
B
80
42
80
110
180
A
2.4
2.4
2.5
2.5
2.4
DCR Pri
(
Ω±25%)
B
2.3
2.4
2.5
2.5
2.4
A
2.4
2.4
4.3
5.8
4.4
DCR Sec
(Ω±25%)
B
4.0
2.4
4.3
5.8
4.4
Part
Number
ISSUE: A 08/01
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