L3916A Datasheet PDF - STMicroelectronics SPEECH AND 14 MEMORY DIALER WITH LED DRIVER Specs

L3916A - SPEECH AND 14 MEMORY DIALER WITH LED DRIVER

Datasheet Summary

Description

The device consists of the speech and the dialer.

It provides the DC line interface circuit that terminates the telephone line, analog amplifier for speech transmission and necessary signals for either DTMF or loop disconnect (pulse) dialing.

Features

provided by the PABX or central office. The PAUSE key stores a timed pause in the number sequence. Redial is then delayed until an outside line can be accessed or some other activity occurs before normal signaling resumes. A LND key input automatically redials the last number dialed.

Datasheet Details

Part number	L3916A
Manufacturer	STMicroelectronics
File Size	124.67 KB
Description	SPEECH AND 14 MEMORY DIALER WITH LED DRIVER
Datasheet	L3916A Datasheet
Additional preview pages of the L3916A datasheet.

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Full PDF Text Transcription

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® L3916A SPEECH AND 14 MEMORY DIALER WITH LED DRIVER SPEECH CIRCUIT 2 TO 4 WIRES CONVERSION PRESENT THE PROPER DC PATH FOR THE LINE CURRENT AND THE FLEXIBILITY TO ADJUST IT AND ALLOW PARALLEL PHONE OPERATION PROVIDES SUPPLY WITH LIMITED CURRENT FOR EXTERNAL CIRCUITRY SYMMETRICAL HIGH IMPEDANCE MICROPHONE INPUTS SUITABLE FOR DYNAMIC ELECTRET OR PIEZOELECTRIC TRANSDUCER ASYMMETRICAL EARPHONE OUTPUT SUITABLE FOR DYNAMIC TRANSDUCER LINE LOSS COMPENSATION INTERNAL MUTING TO DISABLE SPEECH DURING DIALING LIGHTED DIAL LED CONSUMING 25% OF LINE CURRENT DIALER CIRCUIT 32 DIGITS FOR LAST NUMBER REDIAL BUFFER 18 DIGITS FOR 13 MEMORY REDIAL ALLOW MIXED MODE DIALING IN EITHER TONE OR PULSE MODE PACIFIER TONE PROVIDES AUDIBLE INDICATION OF VALID KEY PRESSED IN A BUZZER OR/AND IN THE EARPHONE TIMED PAB

Published: Mar 22, 2005 |