3 X CM8870 DTMF CMOS Receiver (CM8870PI MT8870) ICs. (Pack of 3)

CM8870 CMOS DTMF Receiver (Also known as 8870
or MT8870 or CM8870PI), 18 Pins DIP case. 

 Manufactured by CALIFORNIA MICRO DEVICES

Pack contain: Three ICs 

To download a full datasheet click here.


 
DESCRIPTION:    The CAMD CM8870 provides full DTMF receiver capability by integrating both the bandsplit filter and digital decoder functions into a single 18-pin DIP package. The CM8870 is manufactured using state-of-the-art CMOS process technology for low power consumption (35mW, max.) and precise data handling. The filter section uses a switched capacitor technique for both high and low group filters and dial tone rejection. The CM8870/70C decoder uses digital counting techniques for the detection and decoding of all 16 DTMF tone pairs into a 4-bit code. This DTMF receiver minimizes external component count by providing an on-chip differential input amplifier, clock generator, and a latched three-state interface bus. The on-chip clock generator requires only a low cost TV crystal or ceramic resonator as an external component.

FEATURES:

• Full DTMF receiver
• Less than 35mW power consumption
• Industrial temperature range
• Uses quartz crystal or ceramic resonators
• Adjustable acquisition and release times
• 18-pin DIP

APPLICATIONS:

• PABX
• Central office
• Mobile radio
• Remote control
• Remote data entry
• Call limiting
• Telephone answering systems
• Paging systems  ) Integrated Circuit, DIP-16 Case. CMOS COUNTER/DIVIDERS.
  Manufactured by Texas Instruments.