The UA9668PC is a high-current, high-voltage peripheral driver similar to the UA9667PC, also manufactured by Fairchild/ON Semiconductor. It's designed to interface between low-level logic circuits and high-power loads, such as relays, solenoids, lamps, and other electromechanical devices. The 'PC' suffix indicates the package type, typically a plastic DIP (Dual In-Line Package). The key difference between the UA9667 and UA9668 often lies in specific electrical characteristics, such as voltage or current ratings, or internal logic configuration. Since exact differences are not readily available without datasheets, it can be considered functionally similar to the UA9667 for the purposes of general description.

Applications

• Relay drivers
• Solenoid drivers
• Lamp drivers
• Stepper motor drivers
• Line drivers
• Logic buffers

Features

• High output current (e.g., up to 500mA or higher)
• High output voltage (e.g., up to 80V or higher)
• TTL/CMOS compatible inputs
• Internal clamp diodes for inductive load protection
• High-speed switching
• Single supply operation
• Plastic DIP package (PC)

Benefits

• High current and voltage capability: Drives a wide range of high-power loads.
• TTL/CMOS compatibility: Interfaces directly with common logic circuits.
• Inductive load protection: Protects the driver from damage caused by inductive kickback.
• High-speed switching: Enables fast response times.
• Easy to use: Requires minimal external components.
• Cost-effective: Provides a simple and efficient solution for driving high-power loads.

Additional Details

The UA9668PC, similar to the UA9667PC, is a monolithic integrated circuit providing a high-current, high-voltage output. Internal clamp diodes protect the driver from voltage spikes caused by inductive loads. TTL/CMOS compatible inputs allow direct control by logic circuits. High-speed switching enables use in applications requiring fast response times. Single supply operation simplifies power supply design. A bypass capacitor is typically needed for stable operation. Refer to the datasheet for precise specifications, application notes, and safety considerations. The UA9668PC likely differs from the UA9667PC in specific electrical characteristics (consult datasheet). Proper heat sinking may be required for high-current applications.