PI49FCT32807QEX

Clock Buffers, Drivers Overview

The PI49FCT32807QEX is a 3.3V CMOS clock buffer manufactured by Diodes Incorporated, designed to distribute a single input signal to ten outputs. It operates within a supply voltage range of 2.97V to 3.63V and supports maximum input frequencies up to 133 MHz. The device features low propagation delay (max 2.5ns) and minimal output skew (max 0.35ns). It integrates 22-ohm series damping resistors on all outputs and utilizes a 20-pin QSOP package.

Clock Buffers, Drivers Feature Summary

• Produces ten outputs from a single low-capacitance input with integrated 22-ohm series damping resistors
• Supports 5V I/O tolerant inputs while operating at 3.3V ±10%
• Ensures high-speed performance with fast rise/fall times under 1.5ns and low propagation delay under 2.5ns
• Operates across an industrial temperature range of –40°C to +85°C

Clock Buffers, Drivers Applications

• High-frequency clock distribution in synchronous systems
• Networking applications requiring low-skew and low-jitter signals
• Systems demanding excellent output-to-power/ground ratios for noise reduction

Clock Buffers, Drivers Procurement Notes

Verify the component status as End-of-Life (EOL) based on distributor notifications dated March 18, 2026. Confirm that the 'Q' suffix denotes the 20-pin QSOP package and the 'EX' suffix indicates tape-and-reel packaging. Ensure compliance with RoHS3 and halogen-free requirements before procurement.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:10 fan-out ratio is required for 3.3V logic systems. It is suitable for designs needing 5V-tolerant inputs without level shifting. Verify that the 20-pin QSOP footprint fits the PCB layout constraints and that the 2.5ns propagation delay meets the timing budget.

Clock Buffers, Drivers Part Context

This part belongs to the PI49FCT series of very low-skew clock buffers. It shares the same core architecture as the PI49FCT32802 but provides ten outputs instead of five. The device is characterized for industrial temperatures and is fully lead-free and green compliant.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the EOL status, alternative components must be evaluated based on pin compatibility, electrical specifications, and package dimensions.

Clock Buffers, Drivers FAQ

What is the function of the internal resistors in the PI49FCT32807?

The device integrates 22-ohm series damping resistors on all ten outputs to minimize signal reflections and improve output signal integrity.

Is the input compatible with 5V logic levels?

Yes, the PI49FCT32807 features 5V I/O tolerant inputs, allowing it to interface with 5V logic sources while operating from a 3.3V supply.

What is the maximum input frequency supported by this buffer?

The maximum input frequency is 133 MHz, ensuring reliable operation for high-speed clock distribution applications.