PS9121-V-AX

Logic Output Optoisolators Overview

The PS9121-V-AX is a high-speed, active low type optocoupler manufactured by Renesas Electronics. It integrates a GaAlAs LED on the input side with a photodiode and signal processing circuitry on the output side. The device features an open collector logic output and supports a nominal data rate of 15 Mbps. Key electrical specifications include a maximum isolation voltage of 3750 Vrms, a common mode transient immunity (CMTI) of 15 kV/µs, and a maximum input forward current of 30 mA. It operates within a temperature range starting at -40°C and consumes low power when supplied at 3.3 V.

Logic Output Optoisolators Feature Summary

• High common mode transient immunity for reliable noise rejection
• Active low logic output configuration
• Low power consumption suitable for 3.3 V systems

Logic Output Optoisolators Applications

• High density digital isolator applications
• Industrial communication interfaces
• Automotive electronic control units

Logic Output Optoisolators Procurement Notes

Verify the specific suffix 'V' indicates the required safety certification or package variant as defined in the official Renesas datasheet. Confirm the operating temperature range meets your environmental requirements. Ensure the 3.3 V supply voltage aligns with your system design. Check for RoHS compliance status if mandated by your procurement policy.

Logic Output Optoisolators Selection Notes

Select this component when high-speed data transmission up to 15 Mbps is required alongside robust galvanic isolation. The active low output simplifies interface logic in certain microcontroller setups. Consider the 3750 Vrms isolation rating for safety-critical applications. Evaluate the 15 kV/µs CMTI for environments with significant electrical noise.

Logic Output Optoisolators Part Context

The PS9121 series represents Renesas' solution for high-speed optical isolation. This family combines LED input with integrated photodetector and signal processing for fast response times. The PS9121-V-AX specifically denotes the version with the 'V' suffix, often associated with specific regulatory approvals or packaging configurations within the SO-5 form factor.

Logic Output Optoisolators Replacement Considerations

Consult the official Renesas replacement guide for qualified alternatives. Verify pin compatibility and electrical parameters such as propagation delay and isolation voltage before substituting.