ISO7840DW

Overview

The ISO7840DW is a high-performance, quad-channel digital isolator from Texas Instruments, housed in a 16-pin SOIC package. It features capacitive coupling technology with a maximum insulation voltage of 5700 Vrms and supports data rates up to 100 Mb/s. The device operates on supply voltages between 2.25 V and 5.5 V, drawing approximately 23.8 mA of operating current. It exhibits a propagation delay of 11 ns and functions reliably within a temperature range of -55°C to +125°C.

Feature Summary

• Provides four unidirectional signal channels for robust digital isolation
• Utilizes capacitive coupling for high-speed data transmission at 100 Mb/s
• Offers reinforced insulation capabilities rated at 5700 Vrms
• Ensures low pulse width distortion for precise timing applications

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing high-voltage safety barriers
• Power metering circuits for energy monitoring
• Inverter drives and motor control interfaces

Procurement Notes

Verify the specific suffix 'DW' confirms the SOIC-16 surface-mount package variant. Confirm RoHS compliance status through official manufacturer documentation before integration. Ensure ESD handling protocols are followed due to moisture sensitivity classification. Cross-reference the datasheet revision to validate electrical characteristics against your design requirements.

Selection Notes

Select this component when four independent unidirectional channels are required within a single package. It is suitable for designs demanding high common-mode transient immunity and reinforced insulation ratings. Consider the 16-pin SOIC footprint for PCB layout constraints. Evaluate power consumption needs as the quiescent current impacts overall system efficiency.

Part Context

This part belongs to the ISO7840 family of digital isolators, designed for high-reliability applications. It serves as a key solution for breaking ground loops and protecting sensitive electronics from high-voltage transients. The series is widely used in industrial and medical sectors where safety standards mandate strict isolation barriers.

Replacement Considerations

The ISO7840DWR is the reel-pack equivalent of the tube-packed ISO7840DW. Designers may substitute these parts if packaging format changes are acceptable without altering electrical performance or pinout compatibility.