UM95088 TelephoneCircuit


Posted on Feb 7, 2014

UM95088 telephone circuit diagram is shown in the above picture. UM95088 is specialized integrated module of dual tone multiple frequency for telephone dialing. It adopts the techniques of CMOS with dual-in-line package of 14 pins.


UM95088 TelephoneCircuit
Click here to download the full size of the above Circuit.

Dual tone multiple frequency telephone schematic circuit made of the above IC, mainly comprises power supply, key board, dialing and transmitting network, and ad-dc coupling circuit (the ring circuit is omitted in the picture) etc.




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