call progress decoder.
include low power consumption and easy application. Few and inexpensive external components are required. A typical application requires a 3.58MHz crystal or clock, 470kΩ.
FEATURES
* Fully decoded tri-state call progress status output
* Works with traditional, precision, or PBX cal.
The NE5900 call progress decoder (CPD) is a low cost, low power CMOS integrated circuit designed to interface with a microprocessor-controlled smart telephone capable of making preprogrammed telephone calls. The call progress decoder information to p.
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