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LS342

Part Number	LS342
Manufacturer	SGS
Description	MULTIFREQUENCY TO TELEPHONE LINE INTERFACE CIRCUIT
Published	Sep 22, 2017
Detailed Description	LINEAR INTEGRATED CIRCUIT MULTIFREQUENCY TO TELEPHONE LINE INTERFACE CIRCUIT The LS342 is a monolithic integrated circu...
Datasheet	LS342 PDF File

Overview

LINEAR INTEGRATED CIRCUIT MULTIFREQUENCY TO TELEPHONE LINE INTERFACE CIRCUIT The LS342 is a monolithic integrated circuit in dual in-line minidip plastic package.
It interfaces the multifrequency tone diallers M751 and M761/761A to the line in telephone sets, performing the follow· ing functions: Adjustment of the DC current/voltage characteristic and AC input line impedance by means of an external resistor (Rd.
Sending to the line of the multifrequency signal.
Adjustment of the signal level by means of an external resistor (R T ).
Stabilized supply voltage to the tone dialler.
ABSOLUTE MAXIMUM RATINGS VL IL IL Ptot Top Tstg , Tj Maximum line voltage (pulse duration';;; 10 ms) Maximum fo...

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