CD22203ES2497

Overview

The CD22203ES2497 is a low-power dual-tone multi-frequency (DTMF) receiver integrated circuit manufactured by Harris Corporation. Designed for operation with a single 5V supply, this component decodes standard DTMF signals generated by telephone keypads. It features internal oscillators and filters to accurately identify the specific frequency pairs associated with each button press. The device is housed in a bulk package and is classified as an active telecom IC. It supports moisture sensitivity level 3, indicating a 168-hour limit for exposure to ambient conditions before soldering.

Feature Summary

• Integrates full DTMF decoding functionality within a single chip architecture
• Operates efficiently on a standard 5-volt power supply rail
• Utilizes internal oscillator and filter circuits for signal processing

Applications

• Telephone keypad interface circuits
• Telecom equipment signaling systems
• Access control entry panels

Procurement Notes

Verify that the specific ES2497 suffix matches the required manufacturing lot or revision level for your design. Confirm RoHS compliance status as applicable sources indicate varying regulatory classifications for this part number. Ensure storage conditions respect the specified moisture sensitivity level prior to assembly to prevent package damage during reflow processes.

Selection Notes

Select this component when a dedicated, low-power solution for DTMF detection is required in 5V logic environments. Consider the ceramic DIP packaging requirements if hermetic sealing or high-temperature stability is necessary for the application. Evaluate pin compatibility with existing decoder layouts to ensure seamless integration into current hardware designs without extensive redesign.

Part Context

This part belongs to the broader category of telecommunications integrated circuits produced by Harris Corporation. It serves as a specialized decoder within the company's portfolio of audio and signaling components. The device complements other telecom ICs by providing the front-end detection capability necessary for interactive voice response and remote control systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout and functional compatibility carefully if considering alternative DTMF receivers from other manufacturers.