DTMF DIALER FOR BINARY DATA-IN S5T0167 INTRODUCTION The S5T0167 is a DTMF dialer for 4 bit binary data input from the microprocessor.
When the tone enable input is low, the oscillator is inhibited and the device is in a low power consumption at standby mode.
On the low to high transition of tone enable, data is latched into the device and selected the standard DTMF signals.
The N-channel open drain output provides a MUTE output during tone generation.
14−DIP−300 FEATURES • • • • • • • Direct interface with microprocessor Generates 16 standard tones Uses inexpensive TV crystal or ceramic resonator (3.
579545MHz) Very low total harmonic distortion Low power standby mode Binary data inputs wi...

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