CM 8870
Review: 5 - "A masterpiece of literature" by , written on May 4, 2006
I really enjoyed this book. It captures the essential challenge people face as they try make sense of their lives and grow to adulthood.
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CM 8870

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CM 8870

The CM8870/70C provides full DTMF receiver capability by integrating both the band-split filter and digital decoder functions into a single 18-pin DIP, SOIC, or 20-pin PLCC package. The CM8870/70C 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.

CM 8870 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, 18-pin DIP EIAJ, 18-pin SOIC, 20-pin PLCC •
  • CM8870C — Power down mode — Inhibit mode — Buffered OSC3 output (PLCC package only) •
  • CM8870C is fully compatible with CM8870 for 18-pin devices by grounding pin 5 and pin 6.

Developer: CM8870_Datasheet

CM 8870

The CM8870/70C provides full DTMF receiver capability by integrating both the band-split filter and digital decoder functions into a single 18-pin DIP, SOIC, or 20-pin PLCC package. The CM8870/70C 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.

CM 8870 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, 18-pin DIP EIAJ, 18-pin SOIC, 20-pin PLCC •
  • CM8870C — Power down mode — Inhibit mode — Buffered OSC3 output (PLCC package only) •
  • CM8870C is fully compatible with CM8870 for 18-pin devices by grounding pin 5 and pin 6.

Developer: CM8870_Datasheet

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