Part number:
MV5087
Manufacturer:
GEC Plessey
File Size:
67.32 KB
Description:
Dtmf generator.
Datasheet Details
Part number:
MV5087
Manufacturer:
GEC Plessey
File Size:
67.32 KB
Description:
Dtmf generator.
MV5087, DTMF GENERATOR
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 ar
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 dete
MV5087 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 3.5
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