ISO7740DW

Overview

The ISO7740DW is a general-purpose digital isolator from Texas Instruments, housed in a 16-SOIC package. It features four unidirectional channels with capacitive coupling isolation technology. The device supports data rates up to 100 Mb/s and offers an insulation voltage of 5000 Vrms. It operates within a supply voltage range of 2.25 V to 5.5 V, drawing a typical operating current of 22.7 mA. Key electrical parameters include a propagation delay of 10.7 ns, rise/fall times of 3.9 ns, and a common-mode transient immunity of 85 kV/µs. The component functions reliably across an extended temperature range from -55°C to +125°C.

Feature Summary

• Provides robust electromagnetic compatibility performance for signal integrity
• Utilizes capacitive coupling for reinforced channel isolation
• Supports high-speed data transmission at 100 Mb/s

Applications

• General-purpose digital isolation circuits
• Industrial automation systems requiring galvanic isolation
• Medical equipment signal interfaces

Procurement Notes

Verify the specific suffix 'DW' corresponds to the SOIC-16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets. Ensure the supplier provides valid traceability records for humidity sensitivity handling requirements during procurement.

Selection Notes

Select this component for applications requiring four isolated channels with unidirectional signal flow. It is suitable where high common-mode transient immunity and wide operating temperature ranges are critical. Consider the 16-SOIC footprint constraints and power dissipation limits relative to the system's thermal management capabilities.

Part Context

This part belongs to the ISO7740 series of quad-channel digital isolators manufactured by Texas Instruments. The series is designed for general-purpose use, offering a balance of speed, isolation voltage, and EMC robustness. The DW suffix specifically denotes the standard SOIC-16 surface-mount package configuration.

Replacement Considerations

Cross-reference with other members of the ISO7740 family, such as ISO7740DR, for identical functionality in different packaging options. Verify pinout compatibility before substituting with generic digital isolators.