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HT19

Part Number	HT19
Manufacturer	Supertex
Description	Electronic Telephone Line Switch
Published	Sep 6, 2016
Detailed Description	Supertex inc. HT19 Electronic Telephone Line Switch Features ►►350V breakdown voltage ►►18Ω maximum switch resistance...
Datasheet	HT19 PDF File

Overview

Supertex inc.
HT19 Electronic Telephone Line Switch Features ►►350V breakdown voltage ►►18Ω maximum switch resistance ►►Current limiting protection ►►Operates at 2.
3V input Applications ►►Telephone handsets ►►Modems ►►Fax machines ►►Answering machines ►►Remote meter reading ►►Telephone interface products General Description The Supertex HT19LG is an electronic line switch circuit that replaces the mechanical hook switch contact or a discrete hook switch in a telephone handset or modem.
It switches the positive side of the telephone line using control inputs that are referenced to the negative side of the line.
In its off state, it can withstand 350V on the positive input.
In its on state, it has a maximum series resistance of 18Ω.
The device provides current limiting determined by an external resistor.
There are three control inputs.
The HKS pin turns on the hook switch when connected to the TPG pin.
This can be accomplished by using a mechanical switch which closes when the handse...

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