PI49FCT32805QE

Clock Buffers, Drivers Overview

The PI49FCT32805QE is a 3.3V, non-inverting CMOS clock driver manufactured by Diodes Incorporated (formerly Pericom). It integrates two independent groups of buffers, each configured as a 1-to-5 fanout with an active LOW output enable input. Group B includes an additional monitor output pin. The device supports switching frequencies up to 133 MHz and features extremely low output skew of less than 270 ps. It operates within an industrial temperature range of –40°C to +85°C and utilizes a 20-pin QSOP package.

Clock Buffers, Drivers Feature Summary

• Dual 1:5 buffer configuration with independent Hi-Z state output enables
• Low output skew (<270ps) and fast propagation delay (<3.0ns)
• Integrated series damping resistors on all outputs for noise reduction
• Monitor output pin available on Group B

Clock Buffers, Drivers Applications

• High-speed computing systems requiring low-skew clock distribution
• Communication equipment utilizing 3.3V logic levels
• Synchronous digital circuits demanding high-frequency signal integrity

Clock Buffers, Drivers Procurement Notes

Verify the 'E' suffix indicates Pb-free and Green compliant packaging. Confirm the 'Q' designation corresponds to the 20-pin 150-mil wide QSOP package. Ensure the specific ordering code matches the required tape-and-reel or cut-tape format if applicable, as the base datasheet lists standard packaging options.

Clock Buffers, Drivers Selection Notes

Select this component when a dual-channel, non-inverting clock buffer is required for 3.3V applications. It is suitable for designs needing <270ps output skew and integrated series resistors. Verify that the 133 MHz maximum frequency meets system timing requirements and that the 20-pin QSOP footprint fits the PCB layout constraints.

Clock Buffers, Drivers Part Context

This part belongs to the PI49FCT series of fast CMOS logic circuits produced using advanced submicron technology. The PI49FCT32805 is specifically designed as a 3.3V version of the earlier PI49FCT805/806 family, offering improved speed grades and lower power consumption while maintaining TTL-compatible inputs and balanced CMOS outputs.

Clock Buffers, Drivers Replacement Considerations

The PI49FCT32805H (SSOP) and PI49FCT32805S (SOIC) are pin-compatible alternatives with different package footprints. Cross-reference with other PI49FCT3280x variants only if voltage levels or fanout ratios differ.