181M-53LF

Overview

The Renesas 181M-53LF is a low EMI spread spectrum clock generator IC housed in an 8-pin SOIC package. It accepts a clock or crystal input and generates stable CMOS output signals with frequencies up to 75MHz. The device incorporates advanced spread spectrum technology to reduce electromagnetic interference, featuring a maximum peak-to-peak jitter of 300ps. Designed for commercial applications, it operates within a temperature range of 0°C to 70°C and is lead-free compliant.

Feature Summary

• Generates low EMI output clocks using proprietary analog and digital PLL technology
• Accepts both clock and crystal inputs for flexible system integration
• Provides spread spectrum output to minimize electromagnetic interference
• Pin and function compatible with Cypress W181-53

Applications

• General electronic devices requiring stable clock signals
• Systems needing reduced electromagnetic interference
• Commercial embedded applications operating within standard temperature ranges

Procurement Notes

Verify the specific suffix (LF) confirms lead-free compliance and RoHS3 status against current manufacturer declarations. Ensure the 8-SOIC package dimensions match your PCB footprint requirements. Confirm that the commercial temperature range (0°C to 70°C) aligns with your operational environment constraints before finalizing procurement.

Selection Notes

Select this component when low EMI performance is critical for signal integrity in commercial-grade systems. The pin-compatible design allows for direct replacement of Cypress W181-53 units without hardware redesign. Consider the 75MHz maximum frequency limit and 300ps jitter specification to ensure compatibility with downstream logic requirements.

Part Context

This part belongs to the 181M series of clock generators from Renesas Electronics. It serves as a specialized timing solution designed to mitigate noise in sensitive electronic circuits. The device leverages IDT's legacy PLL technology, now integrated into Renesas' portfolio, to provide reliable clock generation for various digital systems.

Replacement Considerations

The datasheet explicitly states pin and function compatibility with the Cypress W181-53. Verify electrical parameters such as supply voltage and output swing to ensure seamless substitution in existing designs without modification.