Broadcom HCNW136-000E Optocoupler, Transistor Output, 8-Pin DIP, 3.75kV

The Broadcom HCNW136-000E is a high-speed, single-channel optocoupler housed in a robust 8-pin DIP package. This advanced diode-transistor optocoupler utilises an insulating layer between its LED and integrated photodetector, delivering a high 3.75 kV isolation voltage to ensure complete electrical separation between input and output circuits. A key innovation is the separate connections for photodiode bias and the output transistor's collector, which dramatically enhances switching speed—up to one hundred times faster than a conventional phototransistor coupler—by minimising base-collector capacitance.

Designed for demanding digital and analogue applications, this component is TTL compatible and supports data rates up to 1 Mb/s. Its open-collector output provides flexible interfacing, making it an ideal replacement for slower phototransistor isolators and pulse transformers. The device boasts a current transfer ratio (CTR) of 19% and a maximum forward current (If) of 25mA, ensuring reliable signal transmission across the isolation barrier.

Certified to stringent international safety standards, including UL, CSA, and IEC/EN/DIN EN 60747-5-5, the HCNW136-000E is built for reliability in industrial environments. Its through-hole design facilitates secure and straightforward PCB mounting.

Key Specifications:

• Isolation Voltage: 3.75 kV
• Data Rate: 1 Mb/s (High Speed)
• Current Transfer Ratio (CTR): 19%
• Forward Current (If Max): 25 mA
• Output Type: Open Collector
• Compatibility: TTL/TTL, TTL/CMOS, TTL/LSTTL
• Certifications: UL, CSA, IEC/EN/DIN EN 60747-5-5 Approved

With its combination of high-speed performance, robust electrical isolation, and industry approvals, the Broadcom HCNW136-000E is a critical component for enhancing system safety and signal integrity.