HT9170B HT9170B

HT9170B -- DTMF Receiver

General Description

The HT9170B is Dual Tone Multi Frequency (DTMF) receivers integrated with digital decoder and bandsplit filter functions as well as power-down mode and inhibit mode operations. HT9170B Such devices use digital counting techniques to detect and decode all the 16 DTMF tone pairs into a 4-bit code output. HT9170B Highly accurate switched capacitor filters are implemented to divide tone signals into low and high group signals. HT9170B A built-in dial tone rejection circuit is provided to eliminate the need for pre-filtering.

Features

• HT9170B    Operating voltage: 2.5V~5.5V
• HT9170B    Minimal external components
• HT9170B    No external filter is required
• HT9170B    Low standby current (on power down mode)
• HT9170B    Excellent performance
• HT9170B    Tristate data output for MCU interface
• HT9170B    3.58MHz crystal or ceramic resonator
• HT9170B    1633Hz can be inhibited by the INH pin
• HT9170B    HT9170B: 18-pin DIP package
  HT9170D: 18-pin SOP package
• Data Sheet
• Revision History
• 封装信息
  18-pin DIP 封装
  18-pin SOP 封装
• 问答集
• 应用范例
• Selection Guide
• 产品型号索引      

HT9170B_中文PDF(点击下载)