MT8888 intecrate circuits
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MT8888 intecrate circuits

Central office quality DTMF transmitter/receiver
• Low power consumption
• High speed Intel micro interface
• Adjustable guard time
• Automatic tone burst mode
• Call progress tone detection to -30dBm

16,00 € (με Φ.Π.Α.). 12,90 € (χωρίς Φ.Π.Α.)
με ΦΠΑ Παράδοση σε όλη την Ελλάδα 1-3 ημέρες
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The MT8888C is a monolithic DTMF transceiver with

call progress filter. It is fabricated in CMOS

technology offering low power consumption and high


The receiver section is based upon the industry

standard MT8870 DTMF receiver while the

transmitter utilizes a switched capacitor D/A

converter for low distortion, high accuracy DTMF

signalling. Internal counters provide a burst mode

such that tone bursts can be transmitted with precise

timing. A call progress filter can be selected allowing

a microprocessor to analyze call progress tones.

The MT8888C utilizes an Intel micro interface, which

allows the device to be connected to a number of

popular microcontrollers with minimal external logic.

The MT8888C-1 is functionally identical to the

MT8888C except the receiver is enhanced to accept

lower level signals, and also has a specified low

signal rejection level.

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