ISO7641FMDW

Overview

The ISO7641FMDW is a low-power quad-channel digital isolator manufactured by Texas Instruments. It features four forward channels and one reverse channel, supporting data rates up to 150 Mbps. The device provides an isolation voltage of 4243 Vrms and a common-mode transient immunity (CMTI) of 25 kV/µs. It operates within a supply voltage range of 2.7 V to 5.5 V and functions across a temperature range of -40°C to +125°C. Packaged in a 16-pin SOIC with a 7.50 mm width, it utilizes capacitive coupling technology for galvanic isolation.

Feature Summary

• Provides high-speed signal transmission with data rates up to 150 Mbps
• Offers robust noise immunity with 25 kV/µs common-mode transient rejection
• Ensures safety compliance with 4243 Vrms isolation rating
• Delivers low power consumption suitable for energy-efficient designs

Applications

• Industrial automation systems requiring reliable signal isolation
• Medical equipment needing enhanced patient safety isolation
• Power metering applications for accurate data acquisition
• Inverter drives and motor control circuits

Procurement Notes

Verify the specific suffix 'DW' confirms the tube packaging format rather than reel or cut tape options. Ensure the component meets RoHS3 standards and check moisture sensitivity level (MSL 3) requirements for storage and handling. Confirm that the 16-SOIC package dimensions align with your PCB footprint constraints before finalizing procurement orders.

Selection Notes

Select this component when high CMTI is critical for noisy environments. The 4/1 channel configuration suits interfaces where more output signals are needed than inputs. Compare against ISO7640 variants if bidirectional communication is required instead of unidirectional. Consider thermal dissipation capabilities given the operating temperature range and power specifications.

Part Context

This part belongs to the ISO764xFM family of low-power quad-channel digital isolators from Texas Instruments. It complements other devices like the ISO7640 and ISO7631 by offering specific channel configurations and isolation ratings. The FM designation typically indicates specific performance characteristics within the broader ISO764x series designed for general-purpose isolation tasks.

Replacement Considerations

The ADUM241E0BRWZ from Analog Devices is listed as a similar product alternative.