DTMF RECEIVER

The HM9270C HM9270D is a complete DTMF receiver integrating both the bandsplit Filter and digital decoder functions. The Filter section uses switched capacitor techniques for high- and low-group Filters and dial-tone rejection. Digital counting techniques are employed in the decoder to detect and decode all 16 DTMF tone- pairs into a 4-bit code. External component count is minimized by on-chip provision of a differential input Amplifier clock-oscillator and latched 3-state bus Interface By ELAN Microelectronics Corp
HM9270C 's PackagesHM9270C 's pdf datasheet
HM9270D




HM9270C Pinout, Pinouts
HM9270C pinout,Pin out
This is one package pinout of HM9270C,If you need more pinouts please download HM9270C's pdf datasheet.

HM9270C Application circuits
HM9270C circuits
This is one application circuit of HM9270C,If you need more circuits,please download HM9270C's pdf datasheet.


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