The MC145506 has been discontinued. Suggested replacement: none.
The MC145506 is a per channel codec–filter PCM
mono–circuit. This device performs the voice digitization
and reconstruction as well as the band limiting and
smoothing required for PCM systems. It has HCMOS
compatible digital outputs and otherwise supplements
the MC145500 – MC145505 series of PCM Codec–
Filters. The MC145506 is functionally similar to the
MC145502. It is designed to operate in both synchronous
and asynchronous applications and contains an on–chip
precision reference voltage. The MC145506 is offered in
a 22–pin package and has the capability of selecting from
three peak overload voltages (2.5, 3.15, and 3.78 V).
Most of the features can be made available in a lower pin
count package tailored to a specific user’s application.
Contact the factory for further details.
The MC145506 maintains compatibility with
Motorola’s family of TSACs and MC3419/MC33120
The MC145500 family of PCM Codec–Filter mono–
circuits utilize CMOS due to its reliable low–power performance
and proven capability for complex analog/digital