251MI-39LFT

Overview

The Renesas 251MI-39LFT is a high-performance clock generator, PLL, and frequency synthesizer designed for precise frequency control. It operates as a spread spectrum clock generator with a maximum frequency of 200MHz. The device features a single circuit configuration with a 1:1 input-to-output ratio. It supports CMOS outputs and accepts clock or crystal inputs. The component is housed in an 8-SOIC package (0.154" width) and operates within a voltage range of 3.15V to 3.45V. It functions across a temperature range of -40°C to 85°C.

Feature Summary

• Integrates PLL-based frequency synthesis with spread spectrum clock generation capabilities
• Delivers precise frequency control through a dedicated clock generator architecture
• Supports flexible input options including external clock signals and crystal oscillators

Applications

• High-speed digital system clock distribution
• EMI reduction in sensitive electronic circuits via spread spectrum modulation
• Embedded processor and memory interface timing synchronization

Procurement Notes

Verify the exact suffix designation against official Renesas documentation to confirm pinout compatibility and electrical specifications. Confirm RoHS compliance status and moisture sensitivity level prior to integration. Check for any product change notices regarding packaging or assembly sites that may affect mechanical fit or soldering profiles. Ensure the source provides valid traceability for this specific part number variant.

Selection Notes

Select this component when a single-channel, non-differential clock solution with spread spectrum functionality is required. Compare against other VersaClock series parts for specific jitter performance requirements. Ensure the 8-SOIC package fits the PCB layout constraints. Verify that the 3.15V to 3.45V supply range aligns with the system power design.

Part Context

This part belongs to the Renesas VersaClock family of clock generators. These devices are engineered to provide low-jitter clock solutions for high-speed data converters, processors, and communication interfaces. The 251MI series specifically focuses on integrating frequency synthesis with EMI reduction techniques in a compact surface-mount package.

Replacement Considerations

Consult official Renesas substitution guides for direct replacements. Cross-reference with similar VersaClock models offering compatible package types and electrical characteristics. Verify functional equivalence before replacing discontinued or obsolete variants.