CX81801-64

Overview

The Conexant CX81801-64 is a CMOS-based SmartV.XX modem integrated circuit designed for full-featured, worldwide controller-based communication applications. It integrates a modem controller (MCU) and a modem data pump (MDP) within a single package to support V.32, V.34, and V.90 protocols. The component utilizes a 28-CTLGA surface-mount package with dimensions of 11x6.4 mm, providing a compact solution for embedded modem functionality in industrial or commercial systems requiring reliable serial data transmission.

Feature Summary

• Integrates both modem controller and data pump functions into a single CMOS chip
• Supports global V.32, V.34, and V.90 modulation standards for wide compatibility
• Utilizes a compact 28-pin CTLGA surface-mount package design

Applications

• Embedded PC remote access modules
• Industrial control system modems
• Commercial data communication terminals

Procurement Notes

Verify the specific suffix '-64' against official Conexant documentation to confirm pinout and package configuration. Ensure the source provides valid RoHS status and original manufacturer certification. Cross-reference the part number with Synaptics Incorporated records if necessary, as Conexant's semiconductor assets were acquired. Confirm availability through authorized distributors rather than third-party resellers to guarantee authenticity.

Selection Notes

Select this component when a complete, controller-based modem solution is required without external data pumps. It is suitable for designs needing V.90 compliance and global protocol support in a small footprint. Consider the 28-CTLGA package constraints for PCB layout. Evaluate thermal requirements and power consumption against system specifications before finalizing the design integration.

Part Context

The CX81801 series belongs to Conexant’s SmartV.XX family of modem ICs. These components are engineered to replace discrete modem solutions by combining processing and signal modulation on one die. The -64 variant specifically denotes the 28-CTLGA package format, distinguishing it from other pin counts or form factors within the same functional family.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing firmware and hardware interfaces before attempting any cross-referencing.