L7554 Low-Power SLIC
Data Sheet
March 1997
Table of Contents
Content
Page
Features .................................................................................................................................................................. 1
Description ............................................................................................................................................................... 1
Pin Information ......................................................................................................................................................... 4
Functional Description .............................................................................................................................................. 6
Absolute Maximum Ratings ..................................................................................................................................... 6
Recommended Operating Conditions ..................................................................................................................... 7
Electrical Characteristics ......................................................................................................................................... 7
Test Configurations ............................................................................................................................................... 12
Applications ........................................................................................................................................................... 14
Adjusting dc Feed Resistance......................................................................................................................... 22
Loop Range..................................................................................................................................................... 22
Off-Hook Detection ......................................................................................................................................... 22
Ring Trip Detection......................................................................................................................................... 23
ac Design ........................................................................................................................................................... 24
Third-Generation Codecs ................................................................................................................................ 24
Selection Criteria ............................................................................................................................................. 24
PCB Layout Information ......................................................................................................................................... 26
Outline Diagram...................................................................................................................................................... 27
2
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AGERE [ AGERE SYSTEMS ]
