ISO7220MD

Overview

The ISO7220MD is a dual-channel digital isolator from the ISO7220A series, manufactured by Texas Instruments. It features two forward channels and zero reverse channels with unidirectional signal transmission. The device supports a signaling rate of 150 Mbps and utilizes capacitive coupling for isolation. It operates within a supply voltage range of 3.3 V to 5 V and provides an insulation voltage of 2500 Vrms. The component is housed in an 8-SOIC package and functions reliably across an operating temperature range of -40°C to +125°C.

Feature Summary

• High-speed data transmission capability at 150 Mbps
• Dual-channel unidirectional signal isolation
• Robust capacitive coupling technology
• Extended industrial temperature range operation

Applications

• Industrial automation systems requiring high-speed isolated communication
• Medical equipment needing galvanic isolation for safety compliance
• Power electronics control circuits with high common-mode transient immunity
• Test and measurement instrumentation interfaces

Procurement Notes

Verify the specific suffix 'MD' against official Texas Instruments documentation to confirm the 150 Mbps speed grade and SOIC-8 package variant. Ensure compatibility with system voltage requirements of 3.3 V or 5 V. Confirm that the unidirectional channel configuration (2/0) aligns with the design topology. Check for any recent product change notices regarding manufacturing sites or packaging updates.

Selection Notes

Select this component when high-speed bidirectional isolation is not required but unidirectional throughput up to 150 Mbps is necessary. Compare against lower-speed variants like the ISO7220AD if bandwidth constraints exist. Consider the 8-SOIC footprint for PCB layout compatibility. Evaluate thermal performance within the -40°C to +125°C range for the specific application environment.

Part Context

The ISO7220MD belongs to the ISO7220 family of dual-channel digital isolators. This family offers multiple speed options including 1, 5, 25, and 150 Mbps. The MD suffix specifically denotes the 150 Mbps performance tier within the ISO7220A series, distinguishing it from slower counterparts while maintaining the same physical package and basic isolation characteristics.

Replacement Considerations

Direct substitutes include other ISO7220 variants with matching speed grades and channel configurations. Verify pinout compatibility before substitution. Cross-reference with ISO7220AD or ISO7220BD only if speed requirements allow downgrading.