CMX868AE2-TR1K

Overview

The CMX868AE2-TR1K is a low-power V.22bis modem integrated circuit manufactured by CML Microcircuits. It supports multiple telecommunication standards including V.22bis (2400/2400 bps QAM), V.22, Bell 212A (1200/1200 or 600/600 bps DPSK), V.23, Bell 202, and V.21/Bell 103 (300/300 bps FSK). The device operates on a single supply voltage ranging from 2.7V to 5.5V and functions within an industrial temperature range of -40°C to +85°C. It features programmable transmit and receive USARTs, DTMF encoding and decoding capabilities, and flexible line driver circuits. The component is supplied in a 24-pin TSSOP package with a tape-and-reel configuration.

Feature Summary

• Integrated multi-standard modem supporting V.22bis, V.22, Bell 212A, V.23, Bell 202, and V.21 protocols
• On-chip programmable Tx and Rx USARTs compatible with V.14 asynchronous data requirements
• Built-in high-quality DTMF decoder and standard encoder for tone transmission and detection
• Flexible on-chip line driver and receive hybrid circuits requiring only passive external components
• Dedicated Ring Detector circuit that remains active during Powersave standby mode

Applications

• Telephone Telemetry Systems
• Remote Utility Meter Reading
• Security Systems
• Industrial Control Systems
• Electronic Cash Terminals

Procurement Notes

Verify the specific ordering suffix 'TR1K' against the manufacturer's current documentation to confirm the tape-and-reel packaging format. Ensure the base part number matches the exact electrical specifications required for the design. Cross-reference the datasheet revision date to confirm compatibility with existing reference designs and interface requirements.

Selection Notes

Select this component when a multi-standard modem solution is required for telephone-based telemetry or information systems. It is suitable for applications needing support for both FSK and QAM/DPSK modulation schemes. Consider the integrated DTMF capabilities and ring detector functionality if reducing external component count is a priority. Verify power supply constraints align with the 2.7V to 5.5V operating range.

Part Context

The CMX868AE2-TR1K belongs to the CMX868A family of low-power V.22bis modems produced by CML Microcircuits. This series is designed for integration into various telecommunications and telemetry devices. The 'E2' suffix typically denotes the specific package variant, while 'TR1K' indicates the reel quantity packaging style.

Replacement Considerations

Consult the official CML Microcircuits documentation for confirmed substitute part numbers. Verify pinout compatibility and electrical parameter alignment before replacing the component in an existing design.