PS9634-A

Overview

The PS9634-A is a discontinued power transistor driving amplifier optocoupler manufactured by CEL. It integrates a GaAs infrared LED with a photodiode and signal processing circuitry to drive power transistors. The device provides one channel of isolation with a voltage rating of 5000Vrms. It operates on a supply voltage between 5.4V and 15V, supporting output currents of 500mA or 800mA per channel. The unit functions within an operating temperature range of -20°C to 80°C.

Feature Summary

• Integrates GaAs infrared LED input with photodiode and signal processing for power transistor driving
• Provides high-voltage electrical isolation between input and output circuits
• Ensures minimum common-mode transient immunity to reduce interference

Applications

• Power transistor base amplification
• Gate driver circuits for power switches
• Industrial control systems requiring isolated switching

Procurement Notes

This component is officially listed as no longer manufactured. Verify availability through secondary market distributors. Confirm exact package type (DIP-8) and revision status before ordering. Check for RoHS compliance data as information may be unavailable. Ensure the supplier provides valid traceability documentation for obsolete semiconductor parts.

Selection Notes

Select this part only if legacy compatibility is required. Compare performance against modern equivalents like HCPL-3100 for updated specifications. Verify that the 5000Vrms isolation rating meets system safety requirements. Ensure the 5.4V to 15V supply range aligns with available logic levels. Consider lifecycle risks associated with discontinued components.

Part Context

The PS9634 series belongs to the Special Purpose Isolators category. It was produced by California Eastern Laboratories (CEL). The device serves as a bridge between low-power control signals and high-power transistor loads. It replaces discrete driver designs by integrating necessary protection and amplification stages into a single package.

Replacement Considerations

Public confirmed substitute: HCPL-3100.