HCPL-263L#520

Logic Output Optoisolators Overview

The HCPL-263L#520 is a high-speed logic output optocoupler featuring two independent channels within an 8-pin surface-mount package. It provides 5000 Vrms isolation voltage and supports data rates up to 15 MBd. The device utilizes open collector outputs with Schottky clamping for enhanced noise immunity. Key electrical parameters include a maximum forward current of 15 mA, a forward voltage of 1.75 V, and a reverse voltage rating of 5 V. Rise and fall times are specified at 45 ns and 20 ns respectively, ensuring rapid signal transmission in demanding digital communication environments.

Logic Output Optoisolators Feature Summary

• High common-mode transient immunity of 10 kV/µs for reliable operation in noisy environments
• Schottky-clamped open collector outputs reduce overshoot and improve switching speed
• Dual-channel configuration allows simultaneous isolated signal transmission
• Surface-mount packaging facilitates automated assembly and compact board design

Logic Output Optoisolators Applications

• Industrial automation control systems requiring galvanic isolation
• Data communication interfaces such as RS-485 and CAN bus networks
• Power supply feedback loops for voltage regulation and monitoring
• Microcontroller input/output isolation in embedded systems

Logic Output Optoisolators Procurement Notes

Verify the specific suffix #520 confirms the surface-mount DIP variant rather than through-hole versions. Confirm RoHS compliance status as some legacy variants may differ. Ensure the supplier provides original manufacturer documentation to validate the 15 MBd speed rating and 5000 Vrms isolation specifications against counterfeit components.

Logic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation exceeding 10 MBd is required alongside robust noise immunity. The Schottky-clamped output is critical for applications sensitive to signal ringing or overshoot. Compare against the HCPL-2631 series if lower data rates suffice but higher isolation voltages are needed. Ensure the operating temperature range of -40°C to 85°C meets environmental constraints.

Logic Output Optoisolators Part Context

This part belongs to Broadcom's HCPL-263x family of high-speed optocouplers designed for digital isolation. It serves as a successor to older low-speed variants, offering significantly improved bandwidth while maintaining standard pinouts for backward compatibility in many designs. The family is widely used in industrial and telecommunications sectors where signal integrity and isolation reliability are paramount.

Logic Output Optoisolators Replacement Considerations

HCPL-2631-020E offers similar functionality with 10 MBd speed and 5000 Vrms isolation. HCPL-2630-520 is a discontinued alternative with comparable specs. Verify pinout compatibility and thermal performance before substitution.

Logic Output Optoisolators FAQ

What is the common-mode transient immunity (CMTI) specification?

The HCPL-263L#520 features a minimum CMTI of 10 kV/µs, ensuring stable operation during rapid voltage transients.

Does the output type include Schottky clamping?

Yes, the device uses open collector outputs with integrated Schottky diodes to clamp voltage spikes and improve switching characteristics.