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The MC145500, MC145501, MC145502, MC145503, and MC145505 are all per channel PCM Codec–Filter mono–circuits. These devices perform the voice digitization and reconstruction as well as the band limiting and smoothing required for PCM systems.
The MC145505 is a synchronous device offered in a 16-pin DIP and wide body SOIC package intended for instrument use.
These devices are pin–for–pin replacements for Motorola’s first generation of MC14400/01/02/03/05 PCM mono–circuits and are upwardly compatible with the MC14404/06/07 codecs and other industry standard codecs. They also maintain compatibility with Motorola’s family of MC33120 and MC3419 SLIC products.
The MC145500 family of PCM Codec–Filter mono–circuits utilizes CMOS due to its reliable low–power performance and proven capability for complex analog/digital VLSI functions.