Professional IC Distribution & Technical Solutions

The HCPL-2531 is a high-speed optocoupler manufactured by HP (Hewlett-Packard). Below are its key specifications, descriptions, and features:

Manufacturer:

• Hewlett-Packard (HP)

Description:

• The HCPL-2531 is a dual-channel optocoupler featuring an LED optically coupled to an integrated high-gain photodetector.
• It provides electrical isolation between input and output circuits.
• Designed for high-speed digital signal transmission.

Key Features:

• Dual-Channel Configuration: Contains two independent optocouplers in a single package.
• High-Speed Operation: Supports data rates up to 1 MBd (Mega Baud).
• High Current Transfer Ratio (CTR): Minimum 19% (varies by version).
• Low Input Current Requirement: Typically 10 mA for LED activation.
• Fast Switching Times:
• Rise Time (tᵣ): 3 µs (max)
• Fall Time (t_f): 2 µs (max)
• Wide Operating Temperature Range: -55°C to +100°C
• High Isolation Voltage: 2500 Vrms (min) between input and output.
• Package Type: 8-pin DIP (Dual In-line Package).

Applications:

• Digital logic isolation
• Microprocessor system interfaces
• Switching power supply feedback
• Industrial control systems
• Noise immunity in high-voltage environments

Electrical Specifications (Typical):

• Forward Voltage (V_F): 1.5 V (max at 10 mA)
• Reverse Voltage (V_R): 5 V (max)
• Output Collector-Emitter Voltage (V_CEO): 30 V (max)
• Output Collector Current (I_C): 8 mA (max)

This optocoupler is widely used in applications requiring reliable signal isolation while maintaining high-speed performance.