181M-01LF

Overview

The Renesas ICS181M-01LF is a low EMI clock generator IC designed to reduce electromagnetic interference in digital systems. It generates a spread spectrum output clock from a standard clock or crystal input using proprietary analog and digital Phase-Locked Loop (PLL) technology. This process spreads the frequency spectrum, reducing amplitude peaks by several dB. The device accepts an input clock and provides a same-frequency dithered output. It is available in an 8-pin SOIC package and operates within a supply voltage range of 3.135V to 5.5V.

Feature Summary

• Generates low EMI output clock via spread spectrum technology
• Pin and function compatible with Cypress W181-01
• Accepts clock input and provides same frequency dithered output
• Utilizes mixed analog and digital PLL technology

Applications

• Systems requiring reduction of clock-related electromagnetic interference
• Digital circuits needing spread spectrum clock generation
• Designs replacing crystals and oscillators to save board space

Procurement Notes

Verify component status as discontinuation notices may apply. Check for RoHS compliance details and moisture sensitivity levels before integration. Confirm package availability and lead times through authorized distributors, as stock levels fluctuate. Ensure the specific suffix matches design requirements.

Selection Notes

Select this component when low EMI performance is critical and pin compatibility with legacy designs like the Cypress W181-01 is required. Verify that the input clock frequency supports the desired spread spectrum modulation depth. Ensure the operating temperature range meets system environmental constraints.

Part Context

This part belongs to the ICS181 series of clock generators. It is functionally similar to the ICS181-01 but may have specific packaging or suffix variations. The series is designed for applications where minimizing radiated emissions from clock signals is a primary design constraint.

Replacement Considerations

The datasheet notes pin and function compatibility with the Cypress W181-01. Verify electrical parameters such as supply voltage and output swing against the target replacement to ensure seamless integration without circuit modification.