Home > Passive Components >

MT8870DE Very Large Scale Integrated Circuits Ics Complete DTMF Receiver

Categories Integrated Circuit Chip
Brand Name: MITEL
Model Number: MT8870DE
Certification: Original Factory Pack
Place of Origin: Morocco
MOQ: 100pcs
Price: Negotiation
Payment Terms: T/T, Western Union,PayPal
Supply Ability: 6000PCS
Delivery Time: 1 Day
Packaging Details: please contact me for details
DC Power Supply Voltage: 7 V
Voltage on any pin: VSS-0.3 VDD+0.3 V
Current at any pin (other than supply): 10 mA
Storage temperature: -65 +150 °C
Package power dissipation: 500 mW
Crystal/Clock Freq.Tolerance: ±0.1 %
  • Product Details
  • Company Profile

MT8870DE Very Large Scale Integrated Circuits Ics Complete DTMF Receiver

MT8870DE Very Large Scale Integrated Circuits Ics Complete DTMF Receiver


Features

• Complete DTMF Receiver

• Low power consumption

• Internal gain setting amplifier

• Adjustable guard time

• Central office quality

• Power-down mode

• Inhibit mode

• Backward compatible with MT8870C/MT8870C-1


Description

The MT8870D/MT8870D-1 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; the decoder uses digital counting techniques to detect and decode all 16 DTMF tonepairs into a 4-bit code. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface.


Applications

• Receiver system for British Telecom (BT) or CEPT Spec (MT8870D-1)

• Paging systems

• Repeater systems/mobile radio

• Credit card systems

• Remote control

• Personal computers

• Telephone answering machine


Figure 1 - Functional Block Diagram


Figure 2 - Pin Connections


Functional Description​


The MT8870D/MT8870D-1 monolithic DTMF receiver


offers small size, low power consumption and high


performance. Its architecture consists of a bandsplit


filter section, which separates the high and low group


tones, followed by a digital counting section which


verifies the frequency and duration of the received


tones before passing the corresponding code to the output bus.


Quality MT8870DE Very Large Scale Integrated Circuits Ics Complete DTMF Receiver for sale
Send your message to this supplier
 
*From:
*To: Anterwell Technology Ltd.
*Subject:
*Message:
Characters Remaining: (0/3000)
 
You May Like
    You may also be interested in :
    Inquiry Cart 0
  • Haven't found right suppliers
  • Our buyer assistants can help you find the most suitable, 100% reliable suppliers from China.
  • And this service is free of charge.
  • we have buyer assistants who speak English, French, Spanish......and we are ready to help you anytime!
  • Submit Buying Request
    Contact Us Quickly