MV5087 - DTMF GENERATOR

Product Overview

GEC Plessey

Datasheet Details

Part number	MV5087
Manufacturer	GEC Plessey
File Size	67.32 KB
Description	DTMF GENERATOR
Datasheet	MV5087 Datasheet
Additional preview pages of the MV5087 datasheet.

Product details

Description

Positive Power Supply Emitter output of a bipolar transistor whose collector is connected to VDD.With no keyboard input this output remains at VDD and a keyboard input changes the output to a high impedance state.The state of Single Tone Inhibit input has no effect on XMITR output.These inputs are held at VSS by resistors RC and sense a valid logic level (approx 1/2 VDD) when tied to a ROW input.Negative Power Supply (OV) On-chip inverter completes the oscillator when a 3,579545 MHz crystal

Features

s Pin-for-Pin Replacement for MK5087 s Low Standby Power s Minimum External Parts Count s 3.5V to 10V Operatlon s 2-of-8 Keyboard or Calculator-Type Single Contact (Form A) Keyboard Input s On-Chip Regulation of Output Tone s Mute and Transmitter Drivers On-Chip s High Accuracy Tones Provided by 3.58MHz Crystal Oscillator s Pin-Selectable Inhibit of Single Tone Generation +VDD 1 XMITR 2 COLUMN 1 3 COLUMN 2 4 COLUMN3 5 VSS 6 OSC IN 7 OSC OUT 8 16 TONE OUT 15 SINGLE TONE.

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Published: Nov 3, 2006 |