BROADCOM HCPL-0731-000E 2-Channel Optocoupler, SOIC-8, 3.75kV

The BROADCOM HCPL-0731-000E is a dual-channel, low-input-current, high-gain optocoupler designed for robust signal isolation. It features a pair of GaAsP light-emitting diodes optically coupled to integrated high-gain photodetectors, delivering an extremely high current transfer ratio (CTR) and excellent common-mode transient immunity. A separate VCC pin for the photodiodes and first gain stages enables a lower output saturation voltage and higher-speed operation compared to conventional photo-Darlington optocouplers.

This component is LSTTL compatible and operates from a wide power supply voltage range of 4.5V to 18V. Its high-density SO-8 package makes it ideal for space-constrained applications. Performance is guaranteed over a temperature range of 0°C to 70°C.

Key Features & Specifications

• High Isolation: Provides 3.75kV rms isolation for 1 minute (UL recognised) and 5kV rms for 1 minute (CSA approved).
• High Current Transfer Ratio (CTR): 1600% typical at IF=1.6mA, VCC=4.5V, VO=0.4V.
• Low Input Current: Forward voltage is 1.4V typical at 25°C with IF=1.6mA.
• Reliable Performance: Features a low input-input insulation leakage current and a stable temperature coefficient.

Engineered for reliability in demanding environments, this optocoupler is a cornerstone for designs requiring safe, noise-free signal transfer across isolated circuits.