HM9270C Datasheet Dtmf Receiver

Manufacturer: ELAN Microelectronics Corp

Overview: HM 9270C/D DTMF RECEIVER General.

Datasheet Details

Part number	HM9270C
Manufacturer	ELAN Microelectronics Corp
File Size	66.00 KB
Description	DTMF RECEIVER
Datasheet	HM9270C_ELANMicroelectronicsCorp.pdf

The HM 9270C/D is a plete 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 tonepairs into a 4-bit code.

Complete receiver in an 18-pin package. Excellent performance. CMOS, single 5 volt operation. Minimum board area. Central office quality. Low power consumption. Power-Down mode (HM9270D only). Inhibit-mode (HM9270D only). Pin Configurations HM9270C IN+ IN GS 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 VDD St/GT ESt StD Q4 Q3 Q2 Q1 TOE IN+ IN GS HM9270D 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 VDD St/GT ESt St.

Brand Logo	Part Number	Description	Manufacturer
HMC	HM9270	DTMF Receiver	HMC

Part Number	Description
HM9270D	DTMF RECEIVER
HM91710A	TONE/PULSE SWITCHABLE DIALER
HM91710B	TONE/PULSE SWITCHABLE DIALER