IDT74FCT3807QI8

Clock Buffers, Drivers Overview

The IDT74FCT3807QI8 is a 3.3V CMOS 1-to-10 clock driver manufactured by Renesas Electronics Corporation, originally produced by Integrated Device Technology (IDT). It utilizes advanced dual metal CMOS technology to provide low skew clock distribution with a 1:10 fanout ratio. The device features TTL-compatible inputs and outputs, ensuring compatibility with standard logic families. Designed for commercial temperature ranges (0°C to +70°C), it operates within a supply voltage of 3.3V ± 0.3V. Key electrical specifications include a maximum propagation delay of 3ns at 50Ω AC termination and a typical input capacitance of 4.5pF.

Clock Buffers, Drivers Feature Summary

• Provides 1:10 fanout from a single input to ten outputs, reducing loading on preceding drivers.
• Guarantees low output skew of less than 350ps (max) and very low duty cycle distortion under 350ps (max).
• Features high-speed performance with a maximum propagation delay of 3ns and output rise/fall times under 1.5ns.
• Includes hysteresis on low capacitance inputs (typical 4.5pF) to improve noise margins.

Clock Buffers, Drivers Applications

• Clock signal distribution in digital systems.
• Signal distribution networks requiring low skew.
• High-speed data transmission interfaces.

Clock Buffers, Drivers Procurement Notes

Verify the specific ordering suffix 'QI8' against current manufacturer documentation, as legacy IDT part numbers often have complex suffix variations indicating package type and temperature range. Confirm RoHS compliance status and end-of-life notifications, as non-green parts were subject to discontinuation notices around May 2010. Ensure the source document explicitly supports the 'I8' suffix configuration before procurement.

Clock Buffers, Drivers Selection Notes

Select this component when a 1:10 fanout buffer is required for 3.3V logic systems. The IDT74FCT3807QI8 is suitable for applications needing low skew (<350ps) and fast propagation delays (<3ns). Verify that the operating environment falls within the commercial temperature range of 0°C to +70°C. Ensure the load capacitance requirements align with the specified switching characteristics for the desired frequency operation.

Clock Buffers, Drivers Part Context

This component belongs to the FCT3807/A series of 3.3V CMOS clock drivers. The 'Q' suffix indicates a Quarter-size Small Outline Package (QSOP), while 'I' denotes the commercial temperature range. The device was originally manufactured by Integrated Device Technology, Inc., which has since been acquired by Renesas Electronics Corporation. The datasheet reference DSC-4647/5c provides the technical basis for these specifications.

Clock Buffers, Drivers Replacement Considerations

Direct pin-to-pin replacements may include other variants within the 74FCT3807 family, such as the industrial temperature grade version (e.g., IDT74FCT3807AQG8). Verify package dimensions and pinout compatibility when substituting. Check for updated manufacturing sources if original IDT stock is unavailable due to historical discontinuation notices.

Clock Buffers, Drivers FAQ

What is the maximum propagation delay for the IDT74FCT3807QI8?

The maximum propagation delay is 3ns when tested with a 50Ω AC termination or 10pF load capacitance.

Does the IDT74FCT3807QI8 support 5V input signals?

Yes, the inputs are TTL compatible and can be driven from 3.3V or 5V components, with an input HIGH level guaranteed up to 5.5V.

What is the typical input capacitance of this device?

The typical input capacitance is 4.5pF, with a maximum of 6pF.