HT9170 - DTMF Receiver - Holtek Semiconductor Inc
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 C 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
**注意 & Noted:
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