MC10H643FNR2

Clock Buffers, Drivers Overview

The MC10H643FNR2 is a clock fanout buffer manufactured by onsemi, designed for high-speed distribution applications. It operates with a maximum frequency of 80 MHz and accepts ECL or TTL inputs to produce eight TTL outputs. The device utilizes a 28-LCC (J-Lead) surface-mount package, specifically the 28-PLCC form factor measuring 11.51x11.51 mm. It functions within a supply voltage range of 4.75V to 5.25V and supports an operating temperature range from 0°C to 85°C. This component provides a 1:8 input-to-output ratio without integrated PLL functionality.

Clock Buffers, Drivers Feature Summary

• Provides single-ended output buffering for differential or single-ended clock signals
• Supports both ECL and TTL logic input standards for flexible interfacing
• Generates eight synchronized TTL outputs from a single input source

Clock Buffers, Drivers Applications

• Clock signal distribution in high-speed digital systems
• Fanout buffering for microprocessor clock networks
• Signal conditioning for ECL/TTL interface circuits

Clock Buffers, Drivers Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm package integrity and pin alignment against datasheet specifications. Ensure supply voltage and thermal conditions match operational requirements. Check for RoHS compliance variations as this model may not meet current environmental standards. Validate replacement availability if new design implementation is required.

Clock Buffers, Drivers Selection Notes

Choose this component when a 1:8 fanout ratio is required for ECL or TTL clock sources. Consider the 80 MHz frequency limit and TTL output compatibility. Evaluate the 28-LCC package constraints for PCB layout. Assess thermal management needs within the specified temperature range. Compare against alternative buffers if higher frequencies or different output logic levels are necessary.

Clock Buffers, Drivers Part Context

This part belongs to the MC10H series of clock buffers and drivers. It shares functional similarities with the MC10H642 and MC10H646 models but differs in input/output configuration and specific frequency ratings. The series targets applications requiring reliable clock distribution with minimal skew across multiple loads.

Clock Buffers, Drivers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.