HT9170 Datasheet - Holtek Semiconductor Inc

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

HT9170_HoltekSemiconductorInc.pdf