ISO7840DWR

Overview

The ISO7840DWR is a quad-channel digital isolator from Texas Instruments, housed in a 16-SOIC package. It provides 5700 Vrms reinforced isolation and supports data rates up to 100 Mbps with a common-mode transient immunity of 100 kV/µs. The device operates on a supply voltage range of 2.25 V to 5.5 V, drawing a typical operating current of 23.8 mA. It features unidirectional signal transmission with four forward channels and zero reverse channels. Key timing parameters include a propagation delay of 11 ns, rise/fall times of 3.9 ns, and pulse width distortion of 0.55 ns. It functions within an extended temperature range of -55°C to +125°C.

Feature Summary

• Provides high-reliability reinforced insulation for safety-critical applications
• Delivers high-speed data transmission at signaling rates up to 100 Mbps
• Offers exceptional noise immunity with 100 kV/µs common-mode transient rejection
• Supports flexible logic level translation across wide supply voltage ranges

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced electrical safety barriers
• Power metering circuits for accurate signal measurement
• Inverter drives and motor control interfaces

Procurement Notes

Verify the specific suffix 'DWR' confirms the SOIC-16 surface-mount package and tape-and-reel shipping configuration. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the ordered quantity matches the manufacturer's standard packaging units to avoid additional handling fees or cut-tape premiums during procurement.

Selection Notes

Select this component when enhanced isolation ratings are mandatory for regulatory compliance. It is suitable for designs requiring multiple isolated channels within a compact footprint. Consider the 100 Mbps speed limit for high-frequency signal integrity. Evaluate the 2.25 V to 5.5 V supply flexibility against system power constraints and logic family compatibility requirements.

Part Context

This part belongs to the ISO784x family of general-purpose digital isolators. It utilizes capacitive coupling technology to transmit signals across the isolation barrier without magnetic components. The series offers various channel configurations, including dual, quad, and octal options, providing scalable isolation solutions for diverse interface needs in modern electronic systems.

Replacement Considerations

ISO7840DWWR is listed as a parameter-equivalent alternative.