MC10H646FN

Clock Buffers, Drivers Overview

The MC10H646FN is a clock buffer and distribution integrated circuit manufactured by onsemi. It functions as a 2:8 fan-out buffer, accepting two differential inputs and providing eight single-ended TTL outputs. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports maximum frequencies up to 80 MHz. Designed for surface-mount applications, it is housed in a 28-PLCC package with J-leads. The component is rated for an operating temperature range from 0°C to +85°C and draws approximately 30 mA of quiescent current.

Clock Buffers, Drivers Feature Summary

• 2:8 Fan-Out Buffer Configuration
• TTL Single-Ended Outputs
• 80 MHz Maximum Frequency
• 28-PLCC Surface-Mount Package

Clock Buffers, Drivers Applications

• Clock distribution networks
• High-speed digital systems
• Signal buffering and routing

Clock Buffers, Drivers Procurement Notes

The MC10H646FN is listed as obsolete or end-of-life by the manufacturer. Availability is restricted to surplus distributors or secondary markets. Verify RoHS compliance status and moisture sensitivity levels through specific supplier documentation before procurement, as original manufacturing has ceased.

Clock Buffers, Drivers Selection Notes

Select this component when a 2-input to 8-output TTL clock distribution solution is required. Ensure the design accommodates the 28-PLCC footprint and 4.75V–5.25V power supply constraints. Consider the 80 MHz frequency limit relative to system timing requirements.

Clock Buffers, Drivers Part Context

This part belongs to the MC10H64x series of clock drivers. It shares functional similarities with the MC10H646FNR2, differing primarily in packaging (PLCC vs. Tape & Reel) and potentially minor electrical tolerances defined in the official datasheet.

Clock Buffers, Drivers Replacement Considerations

The MC10H646FNR2 is a verified alternative offering identical electrical specifications in a tape-and-reel package. Other members of the MC10H64x family may serve as functional substitutes if pin compatibility and output configurations align with the design requirements.