ISO7831DW

Overview

The ISO7831DW is a triple-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It supports bidirectional and unidirectional data transmission at speeds up to 100 Mb/s with a propagation delay of 11 ns. The device operates on a supply voltage range of 2.25 V to 5.5 V and draws a typical operating current of 13.2 mA. It features an insulation voltage of 5700 Vrms and is rated for operation between -55°C and +125°C. Key timing parameters include a maximum rise/fall time of 3.9 ns and pulse width distortion of 550 ps.

Feature Summary

• Provides enhanced isolation certification compliant with VDE, CSA, TUV, and CQC standards.
• Utilizes capacitive coupling technology for high-speed digital signal transmission.
• Supports both bidirectional and unidirectional channel configurations within a single package.

Applications

• Isolating CMOS or LVCMOS digital I/O interfaces
• Industrial communication bus systems requiring high reliability
• Medical equipment with strict isolation safety requirements

Procurement Notes

Verify the specific suffix (e.g., DWW vs DW) against official datasheets to confirm packaging type and moisture sensitivity level. Ensure the component meets the required thermal and electrical specifications for your application environment before procurement.

Selection Notes

Select this model when triple-channel isolation is required with high peak voltage ratings. Compare power consumption and channel directionality against similar quad-channel variants if fewer channels are needed. Confirm compatibility with system voltage levels and temperature ranges.

Part Context

Part of the ISO7831 family of high-performance digital isolators designed for robust noise immunity. The series offers various channel counts and packaging options to suit diverse interface needs while maintaining consistent isolation performance metrics across the product line.

Replacement Considerations

Check for ISO7831DWR as a reel-based alternative. Verify pinout and electrical characteristics match exactly before substituting with other TI isolator families.

FAQ

What is the peak isolation voltage rating?

The device is rated for 8,000 VPK peak isolation voltage.

Does the ISO7831DW support shutdown functionality?

No, this specific variant does not include a shutdown pin or feature.