The HCPL-4503-020 is a high-speed transistor optocoupler from Agilent (formerly Hewlett-Packard). It is designed for high-voltage isolation and high-speed data transmission applications. This optocoupler consists of an AlGaAs LED optically coupled to a high-speed phototransistor.

Applications

• Digital logic ground isolation
• Switching power supplies
• Line receivers
• Feedback control circuits
• Telecommunications equipment
• Microprocessor system interfaces

Features

• High speed: 1 MBd typical
• High common mode transient immunity: 10 kV/μs typical
• Guaranteed performance from 0°C to 70°C
• Safety approval: UL recognized, CSA approved, VDE approved
• High isolation voltage: 2500 Vrms
• Compact 8-pin DIP package

Benefits

• Provides electrical isolation between input and output circuits, protecting sensitive components from voltage spikes and surges.
• Enables high-speed data transmission in noisy environments.
• Offers reliable performance over a wide temperature range.
• Meets stringent safety standards for various applications.
• Reduces board space requirements due to its compact package.

Additional Details

The HCPL-4503-020 features a current transfer ratio (CTR) of 19% minimum. It operates from a supply voltage of 4.5V to 5.5V. The input diode forward voltage is typically 1.3V, and the output transistor collector-emitter breakdown voltage is 20V. The propagation delay time is typically 0.4 μs. The device is RoHS compliant.

The high common mode transient immunity of 10 kV/μs makes this optocoupler suitable for applications where noise and voltage transients are present. The wide operating temperature range ensures reliable performance in industrial environments.