ISDN S-INTERFACE MODULES
Through-Hole, Dual, 1500 Vrms
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T632.A (7/98)
Module Selection Guide
IC Manufacturer IC Part Number Pulse Part Number
AMD
AM 79C 30A/79C T5012/T5015
Lucent (AT & T)
T7234/ T7254 / T7250 / T7256 / T7259 T5013
T7903 T5012 / T5015
Mietec MTC-2072 T5012 / T5015
Mitel MT8930 / 8931 T5012 / T5015
Motorola
MC145474 / 145475 T5011
MC145574 T5013
National TP3420 / 3421 T5012 / T5015
SGS Thomson ST5420 / 5421 T5012 / T5015
Siemens
PEB2080 / 2081 / 2084/ 2085/ 2086
T5012 / T5015
PSB 2186
Yamaha YM7405B T5012 / T5015
Ratio: This is the turns ratio, expressed as “Primary : Secondary”. The term “CT” designates a center tapped
winding.
OCL: Open Circuit Inductance, measured 20 KHz, 100 mV.
L
L
Sec : Leakage Inductance measured across the secondary with the respective primary winding short circuited.
C
W/W
: Winding capacitance, formed by the primary and secondary wire.These wires form the “Plates” of this
capacitor. Measured at 100 KHz, 20 mV.
CD Pri: This is the distributed capacitance.
DCR: This is the resistance of the windings when measured in DC conditions.
∆∆
I
DC
: The maximum specified unbalanced DC current capability of the device.
The minimum primary inductance and the maximum distributed capacitance satisfy the transmitter output and receiver
input impedance requirements of CCITT 1.430 for both TE & NT.
The maximum distributed capacitance allows sufficient margin for the capacitance of the IC and a protection diode
network. It is consistent with the overall maximum value specified and permitted length of the basic access TE cord.
Flammability – Materials used in the products are recognized UL94-VO. Products meet the requirements of
IEC 695-2-2 (needle flame test).
Safety Standards – All transformers listed in this data sheet are designed to meet UL1459 and UL1950 as a basic
insulation barrier (UL file number E133523).
Definition of Terms
