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BU8874F

Features: · Dynamic range of 45dB. (internal AGC)· Power down mode.· 4-bit binary serial data output.· Guard time can be controlled through host microcontroller.· Input pins equipped with hysteresis. (ACK pin)· 4.19MHz crystal resonator can be used.·8-pin DIP package. (BU8874)Application·Telephone...

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SeekIC No. : 004303976 Detail

BU8874F: Features: · Dynamic range of 45dB. (internal AGC)· Power down mode.· 4-bit binary serial data output.· Guard time can be controlled through host microcontroller.· Input pins equipped with hysteresis...

BU8874F Data Sheet

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Part Number:
BU8874F
Supply Ability:
5000

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Product Details

Description



Features:

· Dynamic range of 45dB. (internal AGC)
· Power down mode.
· 4-bit binary serial data output.
· Guard time can be controlled through host microcontroller.
· Input pins equipped with hysteresis. (ACK pin)
· 4.19MHz crystal resonator can be used.
·8-pin DIP package. (BU8874)


Application

·Telephone answering machines


Pinout

Connection Diagram




Specifications

Connection Diagram


Description

The BU8874 and BU8874F are DTMF receiver ICs developed for use in telephone answering machines, and convert
16 different types of DTMF signals into 4-bit binary serial data. In addition to a compact 8-pin DIP (BU8874) package,
BU8874F feature a wide dynamic range, eliminating the need for an external input amplifier. Expertise from a number of companies has been incorporated into these products to enable guard time control through a host microcontroller.




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