PC910X High-Speed Optocoupler Technical Summary

Overview

The PC910X is a high-performance optocoupler designed for ultra-high-speed digital signal isolation applications. This component provides galvanic isolation between input and output circuits while maintaining exceptional signal integrity. With its industry-leading response time and robust isolation characteristics, the PC910X is ideal for demanding applications in industrial automation, computer peripherals, and communication systems.

Engineered with advanced optoelectronic technology, this device combines an infrared LED optically coupled to a high-speed photodetector in a compact package. The PC910X meets stringent safety standards including UL recognition (File No. E64380), making it suitable for safety-critical applications requiring reliable isolation.

Key Features

• Ultra-high speed response: Typical propagation delay (t_PHL, t_PLH) of 50ns at R_L=350Ω
• High isolation voltage: Provides safe electrical separation between input and output circuits
• Low input current drive: Maximum forward input current (I_FHL) of 5mA reduces power consumption
• Excellent noise immunity: Features instantaneous common mode rejection for reliable operation in noisy environments
• Compatibility: TTL and LSTTL compatible output for easy integration with digital systems
• Safety certified: Recognized by UL (File No. E64380) for compliance with safety standards

Applications

The PC910X is designed for applications requiring high-speed signal isolation with robust performance:

Computer and Peripheral Interfaces

• High-speed data communication between isolated systems
• Interface protection for serial ports (RS-232, RS-422, RS-485)
• Isolation for USB and other high-speed peripheral connections

Industrial Control Systems

• Programmable Logic Controller (PLC) I/O isolation
• Motor drive control circuits
• Industrial network isolation (Fieldbus, Profibus)

Power Electronics

• Gate drive circuits for MOSFETs and IGBTs
• Switch mode power supply feedback loops
• Inverter and converter control systems

Medical Equipment

• Patient-isolated monitoring systems
• Medical imaging equipment interfaces
• Diagnostic equipment signal isolation

Electrical Characteristics

The following specifications are measured at T_a = 25°C unless otherwise noted:

Input Characteristics

• Forward Voltage (V_F): 1.2V typical at I_F=5mA
• Reverse Voltage (V_R): 5V maximum
• Input Current (I_FHL): 5mA maximum
• Input Capacitance (C_IN): 15pF typical

Output Characteristics

• Output High Voltage (V_OH): 2.4V minimum at I_OH=-400μA
• Output Low Voltage (V_OL): 0.4V maximum at I_OL=1.6mA
• Output Current (I_O): 16mA maximum continuous
• Output Rise/Fall Time: 15ns typical

Switching Characteristics

• Propagation Delay (t_PHL, t_PLH): 50ns typical at R_L=350Ω
• Pulse Width Distortion: 30ns maximum
• Common Mode Transient Immunity: 15kV/μs minimum

Isolation Characteristics

• Isolation Voltage (V_ISO): 3750V_RMS minimum
• Creepage Distance: 8mm minimum
• Clearance Distance: 8mm minimum
• Comparative Tracking Index (CTI): ≥175V

Package Information

The PC910X is available in a compact, industry-standard DIP-8 package with the following dimensions:

Mechanical Specifications

• Package Type: 8-pin Dual In-line Package (DIP)
• Body Length: 9.8mm ±0.2mm
• Body Width: 6.35mm ±0.1mm
• Body Height: 3.7mm maximum
• Lead Pitch: 2.54mm (0.1 inch)
• Lead Length: 3.3mm minimum
• Lead Width: 0.5mm ±0.1mm
• Lead Thickness: 0.25mm ±0.05mm

Package Marking

• Top side marking includes part number (PC910X) and date code
• Pin 1 is indicated by a dot or notch on the package body
• RoHS compliance marking when applicable

Recommended PCB Layout

• Maintain minimum 4mm creepage distance between input and output sides
• Use guard rings for high-voltage applications
• Provide adequate clearance for high-voltage traces
• Follow manufacturer's recommended land pattern for wave or reflow soldering

Reliability and Environmental Specifications

• Operating Temperature Range: -40°C to +85°C
• Storage Temperature Range: -40°C to +100°C
• Moisture Sensitivity Level (MSL): MSL 1 (Unlimited floor life at <30°C/85% RH)
• ESD Protection: Human Body Model: ±2000V
• Flammability Rating: UL94 V-0

Ordering Information

The PC910X is available in several packaging options:

• Standard Package: Tube packaging, 50 units per tube
• Reel Packaging: Tape and reel, 1000 units per reel
• Sample Quantities: Available in single-unit quantities for evaluation

For specific ordering codes, please contact the manufacturer or authorized distributors for the latest part number variations including temperature grade and packaging options.