ELM452(TA)-V

Overview

The ELM452(TA)-V is a high-speed transistor output optocoupler manufactured by Everlight Electronics. It features a GaAs infrared LED coupled to an NPN phototransistor, providing electrical isolation with a 3750 Vrms insulation rating. The device is housed in a 6-pin SOIC package and supports data transmission rates up to 1 Mbit/s. Key specifications include a forward voltage of 1.2 V at 10 mA, a collector-emitter breakdown voltage of 80 V, and a propagation delay of 0.5 µs. It operates within a temperature range of -40°C to +100°C.

Feature Summary

• Provides high-speed digital signal isolation with a 1 Mbit/s data rate capability
• Ensures robust electrical safety through a 3750 Vrms isolation voltage rating
• Integrates a GaAs infrared emitter with an NPN phototransistor for efficient coupling
• Designed for compact surface-mount integration using a standard 6-pin SOIC footprint

Applications

• High-speed communication interface circuits requiring galvanic isolation
• Industrial control systems for noise immunity and signal integrity
• Power supply feedback loops for isolated voltage regulation
• Microcontroller peripheral isolation for digital input/output protection

Procurement Notes

Verify the specific suffix (TA-V) against the latest Everlight datasheet to confirm tape-and-reel packaging and lead-free compliance status. Ensure that the required isolation voltage and data rate meet the system design specifications before ordering. Cross-reference the pinout configuration with the target PCB layout to prevent installation errors during assembly.

Selection Notes

Select this component when a balance between moderate speed (1 Mbit/s) and cost-effective surface-mount packaging is required. It is suitable for applications where 3750 Vrms isolation is sufficient but higher speeds like 10 Mbps are not necessary. Consider the 6-pin SOIC form factor for space-constrained designs compared to larger DIP packages.

Part Context

This part belongs to the ELM45x series of high-speed transistor output optocouplers from Everlight. It shares functional similarities with other members like the ELM453L but differs in specific electrical characteristics and voltage ratings. The series is designed to replace older discrete isolation solutions with integrated, reliable semiconductor devices.

Replacement Considerations

Potential substitutes include the EL0452(TA)-V or compatible parts from other manufacturers offering similar 1 Mbit/s speeds and SOIC-6 packages. Verify that any replacement maintains the same pinout, isolation voltage, and propagation delay specifications to ensure circuit compatibility.