PI49FCT3805CQE

Clock Buffers, Drivers Overview

The PI49FCT3805CQE is a 3.3V non-inverting clock driver manufactured by Diodes Incorporated, utilizing advanced submicron CMOS technology. It features two independent buffer groups with a 1-in, 5-out configuration per bank and active LOW 3-state Output Enable inputs (OEA, OEB). The device includes a dedicated Monitor output pin for diagnostics and PLL driving. Designed for industrial operation between –40°C and +85°C, it offers extremely low output skew of 0.5ns and hysteresis on all inputs. Electrical characteristics specify a maximum propagation delay of 4.5ns at VCC = 3.3V ±0.3V with a 50pF load.

Clock Buffers, Drivers Feature Summary

• Dual independent buffer banks with 1:5 fanout and 3-state control
• Extremely low output skew of 0.5ns typical
• Dedicated MON pin for clock bus monitoring and diagnostics
• TTL input and CMOS output compatibility with input hysteresis

Clock Buffers, Drivers Applications

• High-speed clock distribution networks
• Clock busing systems requiring 3-state control
• PLL driving applications
• Address distribution in high-speed digital systems

Clock Buffers, Drivers Procurement Notes

Verify the ordering suffix 'E' confirms lead-free and green packaging status as defined by Diodes Incorporated. Confirm the 'Q' package code corresponds to the 20-pin QSOP form factor. Ensure the 'C' speed grade meets specific timing requirements relative to other available grades like 'B'. Check current product lifecycle status as manufacturing transitions may affect long-term availability.

Clock Buffers, Drivers Selection Notes

Select the PI49FCT3805CQE when non-inverting logic is required; use the PI49FCT3806 variant for inverting applications. The 'C' speed grade provides a maximum propagation delay of 4.5ns, suitable for frequencies up to 166MHz. Ensure the design accommodates the 20-pin QSOP footprint and operates within the specified 3.0V to 3.6V supply range for optimal performance.

Clock Buffers, Drivers Part Context

This component belongs to the PI49FCT3805/3806 series of 3.3V Fast CMOS Buffer/Clock Drivers. It serves as the non-inverting counterpart to the PI49FCT3806. The device is part of Diodes Incorporated's portfolio derived from Pericom Semiconductor technology, designed for low power and high-speed timing solutions.

Clock Buffers, Drivers Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source documentation. Designers should consult Diodes Incorporated directly or authorized distributors for qualified alternatives if this specific speed grade or package is unavailable.