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HT9170

Holtek Semiconductor Inc
Part Number HT9170
Manufacturer Holtek Semiconductor Inc
Description DTMF Receiver
Published Mar 26, 2005
Detailed Description HT9170 DTMF Receiver Features · · · · · Operating voltage: 2.5V~5.5V Minimal external components No external filter is ...
Datasheet PDF File HT9170 PDF File

HT9170
HT9170

Overview
HT9170 DTMF Receiver 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 inhibited by the INH pin HT9170B: 18-pin DIP package HT9170D: 18-pin SOP package General Description 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 detect an...


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