ISOS141FDBQSEP

Overview

The ISOS141FDBQSEP is a radiation-tolerant, quad-channel digital isolator manufactured by Texas Instruments. It features a 3/1 channel configuration with three forward channels and one reverse channel. The device operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mbps. It utilizes capacitive coupling for signal isolation and is housed in a 16-pin SSOP (DBQ) package. The component is designed for high-reliability applications requiring robust performance under radiation exposure.

Feature Summary

• Radiation tolerant design suitable for harsh environments
• Quad-channel architecture with 3/1 polarity configuration
• High-speed data transmission capability up to 100 Mbps
• Capacitive coupling isolation technology

Applications

• Spacecraft communication systems
• Satellite onboard electronics
• Nuclear instrumentation interfaces
• High-reliability industrial control systems

Procurement Notes

Verify the specific suffix 'SEP' indicates space-grade qualification when sourcing. Confirm the package type is SSOP-16 (DBQ). Ensure compatibility with radiation tolerance requirements for the target environment. Check datasheet for detailed electrical characteristics and operating temperature ranges before integration.

Selection Notes

Select this component for applications requiring high-speed digital isolation in radiation-exposed environments. The 3/1 channel layout suits systems needing multiple unidirectional signals with one return path. Consider the SSOP-16 package for board space constraints. Verify that the 100 Mbps speed meets system timing requirements.

Part Context

This part belongs to the ISOS141-SEP family of radiation-tolerant digital isolators from Texas Instruments. It is engineered for aerospace and defense sectors where standard commercial components may fail due to ionizing radiation. The device provides reliable signal transmission across isolation barriers in critical mission-critical hardware.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific radiation-tolerant variant. Standard commercial isolators lack the required radiation hardness. Consult Texas Instruments for qualified alternatives if pinout or functionality changes are acceptable.