HCPL-540K

Logic Output Optoisolators Overview

The HCPL-540K is a single-channel, hermetically sealed high-speed logic output optocoupler manufactured by Broadcom Limited. It features an AlGaAs LED coupled to a high-gain photodetector with hysteresis thresholds for noise immunity. The device supports data rates up to 40 Mb/s and provides 1500 VDC isolation with 500 V/µs common-mode transient immunity. Key electrical parameters include a forward current of 10 mA, typical forward voltage of 1.35 V, rise time of 15 ns, fall time of 10 ns, and maximum power dissipation of 200 mW. It operates within a temperature range of -55°C to +125°C.

Logic Output Optoisolators Feature Summary

• Hermetically sealed ceramic package meeting MIL-PRF-38534 Class K reliability standards
• Tri-state logic output compatible with TTL, STTL, LSTTL, and HCMOS levels
• Integrated hysteresis threshold design minimizes signal jitter and enhances noise rejection

Logic Output Optoisolators Applications

• Military and aerospace digital circuits requiring high reliability
• Industrial control systems demanding galvanic isolation
• Medical equipment with strict safety isolation requirements

Logic Output Optoisolators Procurement Notes

Verify the specific suffix (e.g., -300) against the datasheet to confirm pin configuration and lead finish options. Ensure the procurement order specifies the required military qualification class if applicable. Confirm that the 8-pin DIP gull wing package matches the target PCB footprint. Validate that the tri-state output functionality aligns with the system bus architecture before finalizing the purchase.

Logic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required in harsh environments. The hermetic seal and Class K certification make it suitable for applications where standard plastic packages may fail. Consider the tri-state output capability for direct bus driving without external pull-up resistors. Verify that the 1500 VDC isolation rating meets the system's safety insulation requirements.

Logic Output Optoisolators Part Context

The HCPL-540K belongs to the HCPL series of high-speed optocouplers from Broadcom Limited. It utilizes advanced AlGaAs technology to achieve high data transmission rates while maintaining low power consumption. The device is part of a family designed for robust performance in critical infrastructure, offering consistent electrical characteristics across its variants due to shared chip and assembly processes.

Logic Output Optoisolators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult official manufacturer cross-reference guides for potential alternatives.