onsemi

MC10H641FNR2

MC10H641FNR2 Description

The MC10H641FNR2 from onsemi is a high-performance 1:9 fanout buffer (distribution) IC designed for precision clock and signal distribution applications. Operating within a 4.75V to 5.25V supply range, this surface-mount device supports a maximum frequency of 65 MHz, making it suitable for high-speed digital systems. It features PECL (Positive Emitter-Coupled Logic) inputs and TTL (Transistor-Transistor Logic) outputs, ensuring compatibility with mixed-signal environments. The device is housed in a 28PLCC package and is rated for 0°C to 85°C operating temperatures, ideal for industrial and commercial applications. Although marked as obsolete, its robust design and REACH Unaffected status ensure reliability for legacy systems.

MC10H641FNR2 Features

• 1:9 Input-to-Output Ratio: Distributes one input signal to nine outputs with minimal skew.
• Differential Input/Output: Supports PECL inputs and TTL outputs for noise immunity and signal integrity.
• High-Speed Operation: Up to 65 MHz frequency capability for timing-critical applications.
• Wide Voltage Range: Operates at 4.75V–5.25V, compatible with standard 5V systems.
• Surface-Mount Design: 28PLCC package with MSL 1 (Unlimited) moisture sensitivity, suitable for automated assembly.
• Industrial Temperature Range: 0°C to 85°C ensures stability in harsh environments.
• Obsolete but Reliable: While no longer in production, it remains a trusted solution for legacy designs.

MC10H641FNR2 Applications

• Clock Distribution: Ideal for synchronizing multiple subsystems in telecom, networking, and computing equipment.
• Signal Buffering: Enhances signal integrity in high-speed data paths, such as backplanes and FPGAs.
• Mixed-Signal Systems: Bridges PECL and TTL logic levels in radar, test equipment, and industrial controls.
• Legacy Upgrades: Suitable for maintaining or upgrading older systems requiring stable clock distribution.

Conclusion of MC10H641FNR2

The MC10H641FNR2 excels in high-fanout, low-skew clock distribution with its PECL-to-TTL conversion capability and 65 MHz bandwidth. Its differential signaling and wide operating temperature make it a robust choice for demanding applications. While obsolete, its performance and reliability ensure continued use in legacy and specialized systems requiring precise timing solutions. Engineers seeking a proven fanout buffer for mixed-logic environments will find this IC a dependable option.