Datasheet4U Logo Datasheet4U.com

MV5087 - DTMF GENERATOR

Description

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.

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.

📥 Download Datasheet

Datasheet Details

Part number MV5087
Manufacturer GEC Plessey
File Size 67.32 KB
Description DTMF GENERATOR
Datasheet download datasheet MV5087 Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
MV5089 DTMF Generator Plessey
MV5050 Red GaAsP LED Lamps Fairchild Semiconductor
MV5051 Red GaAsP LED Lamps Fairchild Semiconductor
MV5052 Red GaAsP LED Lamps Fairchild Semiconductor
MV5052 Standard RED Solid State Lamps Fairchild Semiconductor

Other Datasheets by GEC Plessey

Part Number Description
MV5089 DTMF Generator

Full PDF Text Transcription

Click to expand full text
MV5087 MV5087 DTMF GENERATOR DS3125-2.0 June 1993 The MV5087 is fabricated using ISO-CMOS high density technology and offers low power and wide voltage operation. An inexpensive 3.58MHz TV crystal completes the reference oscillator. From this frequency are derived 8 different sinusoidal frequencies which, when appropriately mixed, provide Dual-Tone Multi-Frequency (DTMF) tones. Inputs are compatible with either a standard 2-of-8 or a single contact (form A) keyboard. The keyboard entries determine the correct division of the reference frequency by the row and column counters. D-to-A conversion, using R-2R ladder networks, results in a staircase approximation of a sinewave with low total distortion.
Published: |