HCPL-063A

The HCPL-063A is a dual-channel high-speed optocoupler from Broadcom, integrating logic gate outputs within an SOP-8 package for galvanic isolation in digital signal paths. Typical of the HCPL-063A family, it supports data rates up to 10 MBd with open-collector outputs that interface directly with TTL, CMOS, and low-voltage logic. The device provides high common-mode transient immunity, typically exceeding 10 kV/µs, which preserves signal integrity in electrically noisy environments. Low channel-to-channel propagation delay skew and closely matched rise and fall times make it suitable for parallel data transmission and high-speed multiplexed communication where timing precision is critical.

These optocouplers are deployed in industrial automation for isolated serial interfaces—such as RS-485, RS-422, and CAN bus nodes—as well as in motor drives, power inverters, and digital fieldbus isolation. Aerospace and defense applications leverage the devices for secure signal isolation in harsh, high-reliability environments where ground loop elimination and fault protection are essential. Procurement engineers should note that Broadcom maintains long-term lifecycle support for this device family, reducing obsolescence risk in extended programs. Standard parts are rated for industrial temperature ranges, while extended-grade and military-screened variants (often designated by suffix codes) are available for operation over -55°C to +125°C, meeting high-reliability sourcing requirements without requalification.