IDT821621 datasheet(4/21 Pages) IDT

Part #	IDT821621

Description	LONG HAUL SLIC

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Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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4 / 21 page

Table of Contents

2

October 8, 2003

Features ....................................................................................................................................................................................................................... 1

Description .................................................................................................................................................................................................................. 1

Functional Block Diagram ......................................................................................................................................................................................... 1

Pin Configuration ........................................................................................................................................................................................................ 5

Pin Description ........................................................................................................................................................................................................... 6

Functional Description ............................................................................................................................................................................................... 7

SLIC States Control ......................................................................................................................................................................................... 7

Off-hook Detector ............................................................................................................................................................................................. 7

Ring-trip Detector ............................................................................................................................................................................................. 7

Relay Drivers Control ....................................................................................................................................................................................... 8

DC Feeding ...................................................................................................................................................................................................... 8

Impedance Matching ........................................................................................................................................................................................ 9

Receive Gain Setting ....................................................................................................................................................................................... 9

Thermal Management ...................................................................................................................................................................................... 9

DC Electrical Characteristics ................................................................................................................................................................................... 10

AC Electrical Characteristics ................................................................................................................................................................................... 11

Test Circuits .............................................................................................................................................................................................................. 15

Basic Application Circuit ......................................................................................................................................................................................... 18

Ordering Information ................................................................................................................................................................................................ 19

Table of Contents

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