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MC145557 - PCM Codec Filter

Download the MC145557 datasheet PDF. This datasheet also covers the MC145554 variant, as both devices belong to the same pcm codec filter family and are provided as variant models within a single manufacturer datasheet.

General Description

A codec

filter is used for digitizing and reconstructing the human voice.

These devices were developed primarily for the telephone network to facilitate voice switching and transmission.

Key Features

  • of the MC145554/57 Plus:.
  • Mu.
  • Law Companding MC145564.
  • A.
  • Law Companding MC145567.
  • Push.
  • Pull Power Drivers with External Gain Adjust.
  • Analog Loopback MC145554 MC145557 MC145564 MC145567 L SUFFIX.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MC145554-Motorola.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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MC14551B Quad 2-Channel Analog Multiplexer/Demultiplexer ON Semiconductor
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MC14556B Dual Binary to 1-of-4 Decoder/Demultiplexer ON Semiconductor

Other Datasheets by Motorola Semiconductor (now NXP Semiconductors)

Part Number Description
MC145554 PCM Codec Filter
MC14555B Dual Binary to 1-of-4 Decoder/Demultiplexer
MC1455 Timing
MC145500 PCM Codec-Filter
MC145501 PCM Codec-Filter

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
MOTOROLA SEMICONDUCTOR TECHNICAL DATA Order this document by MC145554/D PCM Codec-Filter The MC145554, MC145557, MC145564, and MC145567 are all per channel PCM Codec–Filters. These devices perform the voice digitization and reconstruction as well as the band limiting and smoothing required for PCM systems. They are designed to operate in both synchronous and asynchronous applications and contain an on–chip precision voltage reference. The MC145554 (Mu–Law) and MC145557 (A–Law) are general purpose devices that are offered in 16–pin packages. The MC145564 (Mu–Law) and MC145567 (A–Law), offered in 20–pin packages, add the capability of analog loopback and push–pull power amplifiers with adjustable gain.