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IN91531N Datasheet - ETC

IN91531N_ETC.pdf

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Datasheet Details

Part number:

IN91531N

Manufacturer:

ETC

File Size:

39.42 KB

Description:

Parallel input tone/pulse dialer high-performance silicon-gate cmos.

IN91531N, PARALLEL INPUT TONE/PULSE DIALER HIGH-PERFORMANCE SILICON-GATE CMOS

IL91531 PARALLEL INPUT TONE/PULSE DIALER HIGH-PERFORMANCE SILICON-GATE CMOS The IN91531N provides a 4-bit data input and a handshaking signal to serve as microcomputer interfaces.

Under microcomputer control the IN91531N generates both a DTMF signal and a pulse output for telephone dialing.

All necessary dual-tone frequencies and dial pulse outputs are derived from the widely used TV crystal standard, providing high accuracy and stability.

The required sinusoidal waveform for individual tones is

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