309RLF

Overview

The Renesas 309RLF is a clock/frequency synthesizer IC from the VersaClock series, manufactured by Renesas Electronics Corporation. It features a single circuit capable of generating up to nine output frequencies with a 1:9 input-to-output ratio. The device operates on a supply voltage between 3V and 3.6V and supports a maximum frequency of 200MHz. It accepts clock or crystal inputs and provides LVCMOS outputs. The component is housed in a 20-SSOP (20-QSOP) package with a width of 3.90mm. It is designed for surface mount installation and functions within an operating temperature range of 0°C to 70°C.

Feature Summary

• Generates multiple output frequencies from a single input with a 1:9 ratio
• Maximum operating frequency of 200MHz
• LVCMOS output signal type
• Integrated PLL with bypass capability

Applications

• Data communication systems requiring precise clock distribution
• General-purpose digital circuits needing stable frequency synthesis
• Embedded systems utilizing LVCMOS compatible interfaces

Procurement Notes

The 309RLF part status is listed as End-of-Life (EOL). Verification of current availability requires checking authorized distributors for remaining stock or obsolete inventory. Procurement should account for potential lead time variations associated with discontinued components. Confirm package variant compatibility, as suffixes may indicate different packaging formats such as bulk or tape-and-reel without altering electrical function.

Selection Notes

Select this component when a fixed-ratio frequency synthesizer with LVCMOS outputs is required for 3.3V logic systems. Ensure the application does not require differential outputs, as this model lacks them. Verify that the 200MHz maximum frequency meets system timing requirements. Consider the 0°C to 70°C commercial temperature range suitability for the intended environment.

Part Context

The 309RLF belongs to the Renesas VersaClock family, which specializes in clock generation and jitter cleaning solutions. This specific part number represents a non-programmable or factory-configured variant within the 309R series. It serves as a legacy solution for applications previously relying on discrete clock generators before more advanced programmable alternatives became standard.

Replacement Considerations

As the 309RLF is marked End-of-Life, direct substitutes must be sourced from Renesas's newer VersaClock families. Verify pinout compatibility if replacing with similar SSOP packages. Check datasheets for equivalent 1:9 ratios and LVCMOS output capabilities in successor models.