251MI-42LF

Overview

The Renesas 251MI-42LF is a VersaClock high-performance clock generator, PLL, and frequency synthesizer. It operates within a supply voltage range of 3.15V to 3.45V and supports maximum frequencies up to 200MHz. The device features a single circuit configuration with a 1:1 input-to-output ratio. It utilizes CMOS output signals and accepts clock or crystal inputs. The component is housed in an 8-SOIC package with a width of 0.154 inches (3.90mm).

Feature Summary

• Integrated phase-locked loop for precise frequency synthesis.
• Supports spread spectrum clock generation capabilities.
• Single-channel architecture with dedicated clock input.

Applications

• High-speed data communication systems requiring stable clocking.
• Network infrastructure equipment.
• Computing platforms needing low-jitter clock distribution.

Procurement Notes

Verify the specific suffix designation against official Renesas documentation to confirm pinout compatibility and electrical characteristics. Confirm RoHS compliance status as historical records indicate variations. Ensure the source document explicitly identifies the manufacturer as Renesas Electronics Corporation rather than a distributor proxy. Validate that the part number matches the exact VersaClock series specification required for the design.

Selection Notes

Select this component when a single-channel, non-programmable clock solution is required. Verify that the 200MHz maximum frequency meets system timing requirements. Ensure the 8-SOIC package fits the PCB layout constraints. Check if spread spectrum functionality is necessary for EMI reduction in the target application environment.

Part Context

This part belongs to the VersaClock family of clock generators. It serves as a fundamental timing element for digital circuits. The device replaces older ICS branded parts under the IDT acquisition. It provides a fixed frequency output derived from a reference input without complex programmability options found in other series members.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official Renesas cross-reference tools for potential alternatives.