HCPL-643K

Logic Output Optoisolators Overview

The HCPL-643K is a dual-channel, hermetically sealed high-speed logic gate optocoupler manufactured by Broadcom Limited. It utilizes a 20-pad Leadless Ceramic Chip Carrier (LCCC) package to ensure maximum reliability under Class K standards. The device supports data rates up to 40 Mbps with push-pull outputs and provides an isolation voltage of 1500 VDC. It features a common-mode transient immunity of 500 V/µs and operates within a temperature range extending to +125°C.

Logic Output Optoisolators Feature Summary

• Hermetically sealed construction in a leadless ceramic chip carrier for enhanced environmental protection
• Dual-channel design with push-pull output stages for high-speed signal transmission
• Class K reliability rating suitable for demanding operational environments

Logic Output Optoisolators Applications

• Military and aerospace systems requiring high reliability
• High-speed digital communication interfaces
• Industrial control systems with strict isolation requirements

Logic Output Optoisolators Procurement Notes

Verify the specific manufacturer documentation to confirm the exact datasheet specifications and Class K compliance details. Ensure that the procurement source provides authentic components from authorized channels. Check for any specific handling requirements associated with the leadless ceramic package during assembly.

Logic Output Optoisolators Selection Notes

Select this component when dual-channel isolation and high-speed performance are required in a hermetically sealed format. The Class K rating makes it suitable for applications where long-term reliability and resistance to harsh conditions are critical. Consider the 20-pad LCCC package constraints for PCB layout and soldering processes.

Logic Output Optoisolators Part Context

This part belongs to the HCPL-643 series of high-speed optocouplers. It is designed to provide robust electrical isolation between circuits while maintaining fast signal integrity. The series is known for its use in applications requiring high reliability and speed, such as in military and industrial sectors.

Logic Output Optoisolators Replacement Considerations

Consult official substitution guides for compatible parts. Verify pinout compatibility and electrical parameters before replacing.

Logic Output Optoisolators FAQ

What is the isolation voltage of the HCPL-643K?

The device provides an isolation voltage of 1500 VDC.

What type of output stage does the HCPL-643K use?

It uses a push-pull, totem pole output stage.