PS9123-AX

Logic Output Optoisolators Overview

The PS9123-AX is a high-speed optocoupler manufactured by Renesas Electronics Corporation. It features a GaAlAs LED input and a totem pole output stage, providing a data rate of 15 Mbps. The device offers a common-mode rejection ratio (CMR) of 7V minimum and a common-mode transient immunity (CMTI) of 15 kV/µs. Key electrical parameters include an isolation voltage of 3750 Vrms, a forward voltage of 1.55 V at 10 mA forward current, and a reverse voltage rating of 5 V. Power dissipation is specified at 130 mW. The component is housed in a 5-pin SOP package.

Logic Output Optoisolators Feature Summary

• High-speed operation with a 15 Mbps data rate capability
• Totem pole output configuration for direct logic interface
• High common-mode transient immunity of 15 kV/µs
• Integrated GaAlAs LED input with photodiode detection

Logic Output Optoisolators Applications

• Industrial communication bus interfaces
• Power supply feedback loops
• Motor control signal isolation
• Data acquisition systems requiring high noise immunity

Logic Output Optoisolators Procurement Notes

Verify the specific suffix 'F3' if present in the order code, as it may indicate tape and reel packaging variations compared to standard cut tape. Confirm RoHS compliance status through official Renesas documentation prior to procurement. Ensure the 5-pin SOP footprint matches the target PCB design constraints. Check for any recent lifecycle notifications or obsolescence warnings directly from the manufacturer's channel.

Logic Output Optoisolators Selection Notes

Select this component when a high-speed digital isolator with a totem pole output is required for noise-sensitive environments. The 15 kV/µs CMTI makes it suitable for applications with rapid voltage transients. Consider the 3750 Vrms isolation rating for safety-critical circuits. Evaluate the 1.55 V forward voltage drop against available drive currents to ensure proper LED activation within system power budgets.

Logic Output Optoisolators Part Context

The PS9123 series belongs to Renesas' high-speed optocoupler family, designed for robust signal transmission across isolation barriers. This specific model utilizes a totem pole output structure, distinguishing it from open-collector variants. The 5-pin SOP package allows for compact surface-mount integration. The series is engineered to meet stringent industrial standards for electromagnetic compatibility and signal integrity.

Logic Output Optoisolators Replacement Considerations

Cross-reference with PS9123-AX equivalents from other manufacturers only if pinout and electrical characteristics match exactly. Verify that substitute devices offer comparable 15 Mbps speed and 15 kV/µs CMTI ratings. Ensure the replacement maintains the same 5-pin SOP physical dimensions and isolation voltage specifications.