PC844X

Transistor, Photovoltaic Output Optoisolators Overview

The Sharp PC844X is a high-speed transistor output optocoupler featuring four independent channels within a single 16-pin DIP package. It provides an isolation voltage of 5000 Vrms, ensuring robust electrical separation between input and output circuits. The device utilizes an infrared-emitting diode coupled to phototransistors for signal transmission. Key electrical parameters include a current transfer ratio of 20% minimum at 1 mA input and 300% maximum at 1 mA input. Switching characteristics are defined by a typical rise time of 4 µs and a fall time of 3 µs, supporting both AC and DC signal applications.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Four-channel configuration in a compact 16-DIP package
• High insulation voltage rating of 5000 Vrms
• Fast switching speed with microsecond-level response times
• Transistor output type for digital signal isolation

Transistor, Photovoltaic Output Optoisolators Applications

• Digital communication interface isolation
• Microprocessor system I/O isolation
• Solid-state relay driver circuits
• Signal transmission across isolated ground domains

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix code (e.g., X) against the manufacturer's official datasheet to confirm pinout compatibility and packaging variant. Ensure the procurement source provides valid RoHS compliance documentation if required by your manufacturing standards. Cross-reference the part number with the latest Sharp Microelectronics product change notices to avoid obsolete revisions.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when multi-channel isolation is required in a standard through-hole footprint. The 5000 Vrms rating suits applications demanding high dielectric strength between circuit sections. Consider the 4 µs/3 µs switching speeds for moderate-frequency digital signals. Verify that the load requirements align with the phototransistor collector current capabilities specified in the electrical characteristics table.

Transistor, Photovoltaic Output Optoisolators Part Context

The PC844X belongs to Sharp's series of transistor-output optocouplers designed for general-purpose isolation tasks. It shares the same internal LED and phototransistor architecture as other models in the family but differs in channel count and package style. This 4-channel variant allows designers to consolidate multiple isolation barriers into a single component, reducing board space compared to using individual single-channel devices.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes must match the 16-DIP package, 4-channel layout, and 5000 Vrms isolation rating. Check competitor datasheets for equivalent current transfer ratios and switching speeds. Ensure any replacement maintains the same pin assignment to avoid PCB redesign.