M751B1 - Touch Tong Generator

SGS

Download the M751B1 datasheet PDF. This datasheet also covers the M751 variant, as both devices belong to the same touch tong generator family and are provided as variant models within a single manufacturer datasheet.

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M751B1 touch tong generator by SGS - Datasheet Preview — Note: The manufacturer provides a single datasheet file (M751-SGS.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number	M751B1
Manufacturer	SGS
File Size	127.58 KB
Description	Touch Tong Generator
Datasheet	M751B1 Datasheet

Other Datasheets by SGS

Part Number	Description
M751	Touch Tong Generator
M751D1	Touch Tong Generator
M750	Counter
M750B1	Counter
M750D1	Counter
M752	Counter
M752B1	Counter
M752D1	Counter
M754	23-STAGE COUNTER
M754B1	23-STAGE COUNTER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text

f f M 751 tOS/MOS INTEGRATED CIRCUIT f---------------------------------------------------------------- PRELIMINARY DATA ~OUCH TONE GENERATOR f' 2.5 to 5V SUPPLY :. INTERNAL PULL-UP WITH DIODE PROTECTION ON ALL INPUTS ,. ON CHIP CRYSTAL CONTROLLED OSCILLATOR: 4.433619 MHz • INTERNAL CAPACITORS FOR THE CRYSTAL OSCILLATOR • LOW HARMONIC DISTORTION • HIGH BAND TONES PRE-EMPHASIS The M751 can provide all tone frequency pairs required for the Touch Tone Dialling System. The output :frequencies are obtained from an internal crystal controlled oscillator whose frequency is reduced in two ,independent programmable counters. The dividing ratio is controlled by the selected key.