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Product Variant Information section
Product Specification Section
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Minimum Order: 2,500
Multiple Of: 2,500
Quantity Web Price
2,500+ $1.63


Attributes Table
Frequency Range 4.19MHz
Supply Current 4.4mA
Supply Voltage 4.5V to 5.5V
Features and Applications

The BU8872FS-E2 is a DTMF Receiver IC with 16 different types of DTMF signal, developed for use in telephone answering machines.

It converts 16 different types of DTMF signals into 4-bit binary serial data and these receivers feature a wide dynamic range, eliminating the need for an external input amplifier.


  • Dynamic range of 45dB. (internal AGC)
  • 4-bit binary serial data output
  • Guard time can be controlled through host microcomputer
  • Input pins equipped with hysteresis. (ACK pin)
  • 19MHz ceramic resonator or crystal resonator can be used
  • 8-pin DIP package. (BU8872)
  • 16-pin SSOP package. (BU8872FS)


  • Telephone answering machines