MC10H646FNR2

Clock Buffers, Drivers Overview

The MC10H646FNR2 is a clock buffer and fan-out driver manufactured by onsemi, designed for high-speed digital applications. It operates with a maximum frequency of 80 MHz and accepts PECL or TTL input signals. The device provides eight differential outputs in a single circuit configuration, utilizing a 2:8 input-to-output ratio. It functions within a supply voltage range of 4.75V to 5.25V and supports surface-mount installation in a 28-LCC (J-lead) package, specifically identified as 28-PLCC (11.51x11.51). The component is rated for an operating temperature range of 0°C to 85°C.

Clock Buffers, Drivers Feature Summary

• Supports 80 MHz maximum operating frequency
• Accepts PECL and TTL input signal types
• Provides differential outputs with a 2:8 input-to-output ratio
• Operates on a single 4.75V to 5.25V power supply

Clock Buffers, Drivers Applications

• Clock distribution networks requiring fan-out buffering
• High-speed data acquisition systems
• Telecommunications equipment clocking

Clock Buffers, Drivers Procurement Notes

The MC10H646FNR2 is officially listed as obsolete by the manufacturer. Availability is restricted to secondary market distributors such as Rochester Electronics, LLC. Verification of lot dates and storage conditions is critical due to the end-of-life status. Standard packaging quantities are typically 500 units per reel, though current stock levels vary by supplier.

Clock Buffers, Drivers Selection Notes

Select this component when a dedicated 2:8 fan-out buffer is required for PECL or TTL sources at frequencies up to 80 MHz. Ensure the design accommodates the 28-LCC package footprint. Note that the output type is specified as TTL in some databases despite differential inputs; verify interface compatibility with downstream loads against the official datasheet before integration.

Clock Buffers, Drivers Part Context

This part belongs to the MC10H646 family of clock drivers from onsemi. It shares the same basic product number but differs in packaging and tape-and-reel specifications compared to other variants like the MC10H646FN. It is distinct from the MC10H642, which supports higher frequencies up to 100 MHz.

Clock Buffers, Drivers Replacement Considerations

Direct substitutes include other MC10H646 family members with compatible pinouts. For higher performance requirements, the MC10H642 offers a 100 MHz capability. Verify pin compatibility and electrical parameters against the target application before replacing the obsolete unit.