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HT8870A Dual Tone Multi Frequency

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Description

HT8870A Dual Tone Multi Frequency (DTMF) Microcircuit is purposed for receiving and decoding of tone pairs from tone-pulse dialers in frequency dial.
Operational amplifier non-inverting input Operational amplifier inverting input Operational amplifier output terminal Reference voltage output termina.

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Datasheet Specifications

Part number
HT8870A
Manufacturer
HTCSEMI
File Size
142.23 KB
Datasheet
HT8870A-HTCSEMI.pdf
Description
Dual Tone Multi Frequency

Features

* - Supply voltage UCC = (2,5
* 5,5) V - No external filter is required - Low-cost 3,58 MHz resonator is used - 1633 Hz signal detection inhibit - 3 state data output - Power down mode - Temperature range -20 …+ 75 °C - Permissible electrostatic discharge potential 500V 18 18 1 DIP18 WSOP18

HT8870A Distributors

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Dual Tone Multi Frequency HTCSEMI
HTCSEMI HT8870A-like datasheet