Features: .OPERATIONDOWN TO 1.3 V/5 mA.DTMF & BEEP TONE INPUTS·EXTERNAL MUTING FOR EARPHONE AND MICROPHONE ·MUTE TURNS ON BEEP TONE & DTMF INPUTSAND TURNS OFF EARPHONE & MICROPHONE ·SUITABLE FOR DYNAMIC OR PIEZO EARPHONES AND PIEZO, DYNAMIC OR ELECTRET MICROPHONESPinoutSpecifications ...
L3280: Features: .OPERATIONDOWN TO 1.3 V/5 mA.DTMF & BEEP TONE INPUTS·EXTERNAL MUTING FOR EARPHONE AND MICROPHONE ·MUTE TURNS ON BEEP TONE & DTMF INPUTSAND TURNS OFF EARPHONE & MICROPHONE ·SUIT...
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Symbol | Parameter |
Value |
Unit |
VL | Line Voltage (3 ms pulse) |
20 |
V |
IL | Line Current |
150 |
mA |
Ptot | Total Power Dissipation, Tamb = 70 |
1 |
W |
Top | Operating Temperature |
20 to 55 |
|
Tj | Junction Temperature |
65 to 150 |
The L3280is a brandnewlowvoltage speechcircuit designedto replacehybrid circuits in telephonesets. L3280 is designed for sets that may be operated in parallel. It features both DTMF input and Beep tone input ; ALCon send and receive and muting input.
VariousDC - characteristics can be programmedat pin 14 replacing testing resistor (43) with proper network value.