ISO7220MDR

Overview

The ISO7220MDR is a dual-channel digital isolator manufactured by Texas Instruments, featuring a 150 Mbps signaling rate. It operates with a 2500 Vrms isolation rating and provides a common-mode transient immunity (CMTI) of 25 kV/µs. The device utilizes capacitive isolation technology and is available in an 8-pin SOIC package. It supports bidirectional data transmission with two forward channels and zero reverse channels. The operating temperature range extends from -40°C to 125°C, ensuring reliability in industrial environments.

Feature Summary

• Capacitive isolation technology for robust signal transmission
• High common-mode transient immunity of 25 kV/µs
• Bidirectional data flow capability across two channels
• Wide operating temperature range for industrial stability

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-voltage safety isolation
• Power metering applications with isolated communication interfaces
• Inverter drives and motor control circuits

Procurement Notes

Verify the complete part number including the suffix 'MDR' to ensure the correct tape-and-reel packaging and specific speed grade. Confirm that the required isolation voltage and CMTI specifications match the system design requirements. Check for RoHS compliance status if environmental regulations apply to the manufacturing process. Ensure the SOIC package width fits the PCB layout constraints.

Selection Notes

Select this component when a dual-channel isolator with 150 Mbps data rate is required. Consider the 2500 Vrms isolation barrier for safety-critical applications. Evaluate the 8-pin SOIC footprint against available board space. Compare CMTI performance against other isolators if high-noise environments are present. Verify power supply voltage compatibility with the target system architecture.

Part Context

The ISO7220 belongs to Texas Instruments' ISO722x family of dual-channel digital isolators. This series offers multiple speed options, including 1, 5, 25, and 150 Mbps variants. The ISO7220 specifically targets applications requiring moderate data rates with high reliability. It shares pinout compatibility with other devices in the family, facilitating design upgrades or replacements within existing systems.

Replacement Considerations

Direct substitutes include other ISO7220 variants with different suffixes for packaging or temperature grades. Cross-reference with ISO7221 or ISO7222 if channel configuration differs. Ensure any replacement maintains the 150 Mbps speed and 2500 Vrms isolation rating. Verify package dimensions match the existing PCB footprint.