EM91420A Datasheet TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR

Manufacturer: ELAN Microelectronics Corp

EM91420A tone/pulse switchable dialer with lcd interface and dual-tone melody generator by ELAN Microelectronics Corp - Datasheet Preview

Datasheet Details

Part number	EM91420A
Manufacturer	ELAN Microelectronics Corp
File Size	175.49 KB
Description	TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR
Datasheet	EM91420A Datasheet

General Description

The EM91420 is a series of tone/pulse switchable dialers that is composed of T/P dialer and T/P dialer with 20-set memories.

The EM91420 series provides necessary functions of telephone set for application in any environment, such as Pulse dialing, Tone (DTMF) dialing, Handfree dialing, keying tone ,and lock functions.

The lock function is designed to inhibit toll dialing operation.

Overview

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY GENERATOR AND DUAL-TONE MELODY GENERATOR EM91420 SERIES EM91420 SERIES.

Key Features

Tone/Pulse switchable.
Wide operating voltage from 2.0 V to 5.5 V.
Low operating current, 0.15 mA (Pulse) and 0.3 mA (Tone) typically.
Adding resistor on keyboard scan pin that can select many telephone specifications, such as : Pulse rate, M/B ratio, Flash time, lock dialing functions.
SDO function supports LCD driver and voice synthesizer to indicate dialing numbers.
Line hold function is designed for stopping conversation temporality.

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