PI49FCT3807SE

Clock Buffers, Drivers Overview

The PI49FCT3807SE is a 3.3V Fast CMOS clock driver manufactured by Diodes Incorporated (formerly Pericom Semiconductor). It functions as a low skew clock buffer with a 1-to-10 fanout configuration, featuring one input and ten outputs. The device operates within an industrial temperature range of –40°C to +85°C and supports 3.3V ±10% supply voltage. Key electrical specifications include a maximum propagation delay of 3.5ns for the 'D' speed grade and an ultra-low output skew of 0.35ns. It ensures TTL input compatibility and CMOS output levels, making it suitable for high-speed clock distribution applications.

Clock Buffers, Drivers Feature Summary

• 1:10 Fanout Configuration: Distributes a single clock input to ten independent outputs to reduce loading on the source.
• Ultra-Low Skew: Achieves a typical output skew of 0.35ns, ensuring precise timing alignment across outputs.
• High-Speed Performance: Offers a maximum propagation delay of 3.5ns (Speed Grade D) at 3.3V operation.
• TTL/CMOS Compatibility: Inputs are compatible with TTL logic levels, while outputs provide standard CMOS voltage levels.

Clock Buffers, Drivers Applications

• Clock signal distribution in high-speed digital systems.
• Signal buffering for memory interfaces and data buses.
• Fanout expansion in networking equipment requiring low jitter.
• System synchronization where minimal duty cycle distortion is critical.

Clock Buffers, Drivers Procurement Notes

Verify the specific speed grade suffix (e.g., D for 3.5ns max delay) when ordering, as performance varies across grades A, B, C, and D. Confirm that the 'S' package code corresponds to the required 20-pin 300-mil wide SOIC form factor. Ensure the 'E' suffix is present if lead-free and green compliant packaging is required for environmental standards.

Clock Buffers, Drivers Selection Notes

Select the appropriate speed grade based on the maximum system clock frequency; Grade D provides the fastest 3.5ns propagation delay. Verify that the load capacitance requirements do not exceed the specified limits to maintain the guaranteed skew performance. Ensure the input signal levels align with the TTL-compatible input thresholds defined in the DC electrical characteristics table.

Clock Buffers, Drivers Part Context

This component belongs to the PI49FCT series of 3.3V Fast CMOS logic circuits produced using submicron technology. It serves as the 3.3V version of the legacy PI49FCT807. The manufacturer offers this device in multiple packages, including SSOP, QSOP, and SOIC, with various speed grades to accommodate different timing constraints in clock distribution networks.

Clock Buffers, Drivers Replacement Considerations

Direct pin-compatible replacements within the same family include PI49FCT3807AHEX, PI49FCT3807BHEX, and PI49FCT3807CHEX, which share the same package but offer different propagation delays. Cross-manufacturer equivalents should be verified against the 1:10 fanout ratio and 3.3V operating voltage constraints.