PI49FCT3805BQE

Clock Buffers, Drivers Overview

The PI49FCT3805BQE is a 3.3V non-inverting clock driver manufactured by Diodes Incorporated, featuring two independent buffer groups with a 1-in, 5-out configuration per group. It operates within a supply voltage range of 3.0V to 3.6V and supports an industrial temperature range of –40°C to +85°C. The device provides extremely low output skew of 0.5ns maximum and includes a monitor output pin for status indication. It utilizes TTL-compatible CMOS inputs and offers 3-state outputs controlled by active LOW enable signals.

Clock Buffers, Drivers Feature Summary

• Dual independent 1-to-5 non-inverting clock buffers with 3-state control
• Extremely low output skew of 0.5ns (max) at VCC = 3.3V
• TTL input and CMOS output compatibility with hysteresis on all inputs
• Integrated monitor output pin for clock bus status

Clock Buffers, Drivers Applications

• Clock distribution in high-speed digital systems
• Clock busing with 3-state control capabilities
• Monitor output applications requiring signal status verification

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'B' corresponds to the specific speed grade and package variant required for the design. Confirm RoHS compliance and lead-free status as specified in the manufacturer's documentation. Ensure the QSOP-20 package dimensions match the PCB footprint constraints. Check for any recent product change notifications or discontinuation notices from Diodes Incorporated prior to finalizing procurement plans.

Clock Buffers, Drivers Selection Notes

Select the PI49FCT3805BQE when a non-inverting clock driver with low skew is required for 3.3V logic systems. The 'B' speed grade indicates a maximum propagation delay of 5.0ns, suitable for frequencies up to 166MHz. Compare against the PI49FCT3806 if inverting functionality is needed instead. Ensure load capacitance requirements do not exceed the specified 50pF for optimal performance.

Clock Buffers, Drivers Part Context

This component belongs to the PI49FCT3805/PI806 series of 3.3V Fast CMOS Buffer/Clock Drivers. It is part of Diodes Incorporated's portfolio derived from the Pericom Semiconductor FCT line. The device is designed to replace older 5V FCT devices in modern 3.3V environments while maintaining timing performance.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers include PI49FCT3805DQEX and PI49FCT3805CHEX from Diodes Incorporated. Cross-manufacturer equivalents such as Renesas 49FCT3805ASOGI8 may be considered but require verification of electrical parameters and pinout compatibility.