onsemi

MC10H643FN

MC10H643FN Description

The MC10H643FN is a Fanout Buffer (Distribution) IC designed for high-performance clock distribution applications. Manufactured by onsemi, this device offers a 1:8 input-to-output ratio, capable of handling frequencies up to 80 MHz. It is designed to operate within an ambient temperature range of 0°C to 85°C, making it suitable for a wide range of industrial and commercial environments. The MC10H643FN is housed in a Tube package and is available in a 28-pin PLCC form factor, which facilitates surface mount assembly. This IC is classified under the HTSUS code 8542.39.0001 and has an ECCN of EAR99, indicating compliance with export regulations. The device supports both ECL and TTL input levels, while the output is TTL compatible, ensuring broad compatibility with various digital systems. Despite its obsolescence status, the MC10H643FN remains a viable option for legacy systems and specific applications requiring its unique capabilities. It is REACH unaffected, ensuring compliance with environmental regulations.

MC10H643FN Features

• High Fanout Capability: The MC10H643FN provides a 1:8 fanout ratio, allowing a single input signal to be distributed to eight output lines. This feature is crucial for applications requiring signal replication without degradation.
• Wide Operating Frequency Range: With a maximum operating frequency of 80 MHz, the MC10H643FN is well-suited for high-speed clock distribution tasks, ensuring precise timing and synchronization in digital systems.
• Versatile Input and Output Levels: Supporting both ECL and TTL input levels, and offering TTL output, the MC10H643FN ensures compatibility with a variety of digital circuits, enhancing its versatility.
• Surface Mount Compatibility: The surface mount mounting type facilitates easy integration into modern PCB designs, reducing assembly complexity and improving reliability.
• Moisture Sensitivity Level 1: The MC10H643FN has an MSL rating of 1 (Unlimited), making it suitable for storage and handling in various environmental conditions without the need for special precautions.

MC10H643FN Applications

The MC10H643FN is ideal for a range of applications where precise clock distribution and signal replication are critical. Some specific use cases include:

• Telecommunications: In telecom systems, the MC10H643FN can be used to distribute clock signals across multiple components, ensuring synchronized operation and minimizing timing errors.
• Computer Systems: For computer motherboards and peripheral devices, the fanout buffer can replicate clock signals to various subsystems, maintaining system integrity and performance.
• Industrial Control Systems: In industrial environments, the MC10H643FN can distribute clock signals to multiple control modules, ensuring precise timing and coordination of operations.
• Test and Measurement Equipment: The high-frequency capability and precise signal distribution make the MC10H643FN suitable for test equipment where accurate timing is essential for reliable measurements.

Conclusion of MC10H643FN

The MC10H643FN, despite being marked as obsolete, remains a robust solution for applications requiring high-speed clock distribution and signal replication. Its 1:8 fanout ratio and support for both ECL and TTL levels provide flexibility and compatibility with various digital systems. The surface mount package and moisture sensitivity level 1 rating further enhance its usability in modern electronics. While newer alternatives may offer additional features, the MC10H643FN continues to serve as a reliable option for specific applications, ensuring precise timing and synchronization.