MC10H641FN

Clock Buffers, Drivers Overview

The MC10H641FN is a single-supply, low skew translating 1:9 clock driver manufactured by onsemi. It converts PECL inputs to TTL outputs within the MECL 10H logic family. The device operates on a single +5.0 V supply with separate ECL and TTL power pins. Key electrical parameters include a maximum propagation delay of 6.36 ns from input D to output Q at 85°C, a maximum operating frequency of 65 MHz, and a typical power supply current of 30 mA. It features a latch mechanism controlled by LEN and EN pins, housed in a PLCC-28 package.

Clock Buffers, Drivers Feature Summary

• Translates PECL differential inputs to nine TTL outputs with guaranteed low skew.
• Includes an internal latch for data transparency or forced LOW state via enable pins.
• Provides a dedicated VBB reference output for single-ended input configuration.
• Features separate power supplies for ECL (VE) and TTL (VT) sections.

Clock Buffers, Drivers Applications

• Low skew clock distribution networks.
• PECL to TTL level translation interfaces.
• High-speed digital system clocking.

Clock Buffers, Drivers Procurement Notes

Verify component authenticity through authorized channels as counterfeit risks exist for legacy parts. Confirm RoHS compliance status if required, noting that the 'G' suffix indicates Pb-Free packaging while standard versions may not be compliant. Ensure proper handling procedures are followed due to moisture sensitivity classification.

Clock Buffers, Drivers Selection Notes

Select this component when interfacing high-speed PECL sources with TTL loads requiring minimal skew. Verify that the application voltage range aligns with the specified 4.75 V to 5.25 V limits. Consider thermal management requirements given the 30 mA supply current and PLCC-28 package thermal characteristics.

Clock Buffers, Drivers Part Context

This part belongs to the MC10H/100H641 series, designed for optimal signal flow and electrical performance using the PLCC-28 package. It serves as a functional equivalent to popular ECLinPS translators, offering improved noise margins and propagation delays compared to older standard logic devices.

Clock Buffers, Drivers Replacement Considerations

Direct pin-compatible replacements within the same family include MC10H641FNG (Pb-Free version). Cross-family alternatives require verification of voltage levels and pinout compatibility.

Clock Buffers, Drivers FAQ

How is the VBB pin utilized?

The VBB pin provides a positive ECL reference voltage output. For single-ended input use, it should be connected to the D input and bypassed with a 0.01 µF capacitor.

What is the function of the LEN and EN pins?

LEN controls the latch transparency; when LOW, the latch is transparent. When EN is HIGH, all outputs are forced LOW. Both are positive ECL inputs.

What is the maximum operating frequency?

The maximum input frequency is specified as 65 MHz into a 50 pF load, ensuring minimum output swing levels.