HT9170 - DTMF Receiver
The HT9170 series are Dual Tone Multi Frequency (DTMF) receivers integrated with digital decoder and bandsplit filter functions.
The H T 9 1 7 0 B a nd H T 9 1 7 0 D t y p es s u p p l y power-down mode and inhibit mode operations.
All types of the HT9170 series use digital counting techniques to de
HT9170 Features
* Operating voltage: 2.5V~5.5V Minimal external components No external filter is required Low standby current (on power down mode) Excellent performance
* Tristate data output for mC interface 3.58MHz crystal or ceramic resonator 1633Hz can be inh
