Subscriber line interface circuit (SLIC) including a...

Details Subscriber line interface circuit (SLIC) including a... Subscriber line interface circuit (SLIC) including a...

2007-01-23

2007-01-23

Tran, Sinh (Department: 2615)

Telephonic communications

Subscriber line or transmission line interface

C379S413000

Reexamination Certificate

active

09909183

ABSTRACT:
A subscriber line interface circuit (SLIC) for a subscriber loop includes a pair of output amplifiers for connection to the subscriber loop and a transient output current limit circuit. The transient output current limit circuit may have at least one programmable output current limit and limit respective output currents from the pair of output amplifiers based thereon. The transient output current limit circuit may limit both source and sink currents for each of the pair of output amplifiers.

REFERENCES:
patent: 4008418 (1977-02-01), Murphy
patent: 4485341 (1984-11-01), Welty et al.
patent: 5596637 (1997-01-01), Pasetti et al.
patent: 5854839 (1998-12-01), Chen et al.
Phillips, The HC-5502X/4X Telephone Subscriber Line Interface Circuits (SLIC), Jan. 1997, p. 4-1-4-17.

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