ISOS141FDBQTSEP

Overview

The ISOS141FDBQTSEP is a radiation-tolerant, quad-channel digital isolator from Texas Instruments. It features a 3/1 channel configuration with bidirectional data flow and capacitive coupling isolation technology. The device supports data rates up to 100 Mb/s and offers an insulation voltage of 3000 Vrms. It operates within a supply voltage range of 2.25 V to 5.5 V, consuming 6.8 mA of operating supply current. Key electrical parameters include a propagation delay of 10.7 ns, rise/fall times of 3.9 ns, and pulse width distortion of 4.9 ns. It functions in temperatures from -55°C to +125°C and is housed in a 16-pin SSOP package.

Feature Summary

• Radiation tolerance designed for space applications
• High common-mode transient immunity
• Capacitive coupling isolation architecture

Applications

• Spacecraft communication systems
• Satellite telemetry and control interfaces
• Radiation-hardened industrial data links

Procurement Notes

Verify the specific suffix 'TSEP' indicates the tape-and-reel packaging variant distinct from tube-packaged versions like 'QSEP'. Confirm radiation hardness specifications against mission requirements. Ensure ESD protection protocols are followed during handling due to moisture sensitivity classification. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability for critical space-grade components.

Selection Notes

Select this component when radiation tolerance is mandatory for digital isolation in harsh environments. The 3/1 channel layout suits asymmetric data bus architectures. Verify that the 100 Mbps speed meets system timing constraints. Consider the SSOP-16 footprint for PCB layout compatibility. Ensure the 3000 Vrms isolation rating aligns with safety standards required by the application design.

Part Context

This part belongs to the ISOS141-SEP family, which provides radiation-hardened solutions for space electronics. It complements standard commercial isolators by offering enhanced durability against ionizing radiation. The series supports various interface protocols including CAN, RS485, SPI, and UART, making it versatile for aerospace data transmission needs.

Replacement Considerations

ISOS141FDBQSEP is the tube-packaged equivalent of this reel-based component.