MC14LC5540DW

Codecs Overview

The MC14LC5540DW is a general-purpose per-channel PCM Codec-Filter designed for voice digitization and reconstruction in synchronous and asynchronous applications. It features pin-selectable Mu-Law or A-Law companding and includes on-chip transmit band-pass and receive low-pass filters. The device operates from a single 5 V power supply with typical power dissipation of 15 mW and a power-down mode of 0.01 mW. It utilizes a fully-differential analog circuit design to minimize noise and incorporates an on-chip precision reference voltage of 1.575 V. The component is housed in a 20-pin SOG package.

Codecs Feature Summary

• Pin-selectable Mu-Law or A-Law companding for global telecommunication compatibility
• Fully-differential analog circuit architecture for lowest noise and improved power supply rejection
• Integrated active R-C pre-filtering and post-filtering for signal smoothing
• Push-pull 300 Ω power drivers with external gain adjustment capability

Codecs Applications

• Electronic SLIC interfaces
• Telephone network voice switching and transmission
• T1, microwave, and satellite communication systems

Codecs Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and revision status. Ensure that the procurement source provides valid traceability data consistent with the original Motorola or Freescale Semiconductor specifications. Confirm environmental compliance details such as RoHS status directly from the official datasheet before finalizing acquisition.

Codecs Selection Notes

Select this component when a single-channel PCM codec with integrated filtering is required for voice processing. Consider the available clock formats including Short Frame Sync, Long Frame Sync, IDL, and GCI timing environments. Verify compatibility with existing telecommunication product families such as U-Interface or S/T-Interface transceivers if part of a larger system architecture.

Codecs Part Context

This device belongs to the family of Telecommunication products originally developed by Motorola, Inc., and later maintained by Freescale Semiconductor. It is designed to maintain compatibility with other devices in the series, including the MC14LC5472 and MC145572 U-Interface Transceivers. The technology leverages CMOS processes for reliable low-power performance in complex analog/digital VLSI functions.

Codecs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.