252PMLFT

Overview

The 252PMLFT is a VersaClock synthesizer manufactured by Renesas Electronics, formerly identified under the ICS brand. It functions as a field-programmable clock generator designed to replace multiple discrete crystals and oscillators. The device utilizes an internal Phase-Locked Loop (PLL) to generate output frequencies from a standard fundamental mode crystal input. Key electrical parameters include an operating voltage of 3.3 V, an input crystal frequency range of 5 MHz to 27 MHz, and an output clock frequency capability up to 200 MHz. The component is housed in an 8-pin SOIC package.

Feature Summary

• Field-programmable architecture with One-Time Programmable (OTP) ROM for custom configuration
• Configurable Spread Spectrum Modulation to reduce system electromagnetic interference (EMI)
• Single-output design capable of generating frequencies between 314 kHz and 200 MHz
• Integrated power-down feature that tri-states outputs and disables PLLs

Applications

• General-purpose clock generation for embedded systems
• Systems requiring EMI reduction through spread spectrum techniques
• Applications needing replacement of multiple discrete oscillators to save board space

Procurement Notes

The 252PMLFT is classified as obsolete or end-of-life by the manufacturer. Availability is restricted, and the component may not be sold by major distributors in all regions. Verification of current stock status and alternative sourcing channels is required before procurement planning.

Selection Notes

Designers should verify compatibility with the required output frequency range (up to 200 MHz) and input crystal specifications (5–27 MHz). Configuration requires IDT VersaClock software to program the four addressable registers into the OTP memory. Ensure the 3.3 V supply voltage aligns with the target system's power rails.

Part Context

This part belongs to the 252PM series of VersaClock synthesizers. It shares functional similarities with other single-output programmable clock generators like the 251PMILF, offering comparable features such as spread spectrum modulation and low-power CMOS processing within an 8-pin SOIC footprint.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct pin-to-pin replacements must be verified against specific application requirements.