181M-52LFT

Overview

The 181M-52LFT is a low EMI clock generator manufactured by Renesas Electronics Corporation. It is packaged in an 8-pin SOIC format with dimensions of 4.9 x 3.9 x 1.5 mm and a pitch of 1.27 mm. The device features a built-in PLL and provides spread spectrum output clocks to mitigate electromagnetic interference. It is not programmable and belongs to the Spread-Spectrum Clocks product category.

Feature Summary

• Generates clock signals using spread spectrum modulation to reduce electromagnetic interference
• Pin and function compatible with Cypress W181-52
• Integrates a phase-locked loop (PLL) for frequency synthesis

Applications

• Digital systems requiring reduced electromagnetic interference
• Clock generation for electronic components
• Applications needing spread spectrum clock outputs

Procurement Notes

Verify the manufacturer part number against official Renesas documentation to ensure authenticity. Confirm that the 8-pin SOIC package matches your board design requirements. Check for any specific ordering suffixes or variants if different packaging options are needed. Ensure compatibility with existing system designs referencing the Cypress W181-52 equivalent.

Selection Notes

Select this component when low EMI performance is critical for digital signal integrity. The fixed, non-programmable nature suits applications with stable frequency requirements. Consider the 8-pin SOIC footprint for surface mount assembly. Verify that the internal PLL meets the jitter and stability needs of the target circuit without external programming.

Part Context

This part belongs to the Renesas 181M series of clock generators. It serves as a direct replacement or equivalent for the Cypress W181-52, maintaining functional compatibility. The device addresses EMI concerns in high-speed digital environments through spread spectrum technology, offering a reliable solution for clock distribution in compact packages.

Replacement Considerations

The Cypress W181-52 is a confirmed pin-and-function compatible substitute. Verify electrical parameters and package dimensions before swapping. No other public substitutes are documented.