ISO7742DBQ

Overview

The ISO7742DBQ is a quad-channel digital isolator from Texas Instruments featuring capacitive coupling technology. It provides four independent channels with a 2/2 channel configuration (two forward, two reverse). Key electrical parameters include a data rate of 100 Mb/s, an insulation voltage of 2500 Vrms, and a propagation delay of 10.7 ns. The device operates on a supply voltage range of 2.25 V to 5.5 V with a typical operating current of 13.4 mA. It supports unidirectional signal transmission and functions within a temperature range of -55°C to +125°C.

Feature Summary

• Robust EMC performance for reliable operation in noisy environments
• Reinforced isolation barrier with UL 1577 certification
• Quad-channel architecture supporting high-speed digital communication

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering applications with high-voltage separation needs

Procurement Notes

Verify the specific suffix 'DBQ' corresponds to the SSOP-16 package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement. Ensure the component meets the required insulation voltage ratings for your specific application safety standards.

Selection Notes

Select this component when a quad-channel solution with reinforced isolation is required. The DBQ package offers a compact form factor suitable for space-constrained designs. Consider the 100 Mb/s data rate limit and 2500 Vrms insulation rating against system requirements. Evaluate thermal management needs given the operating temperature range and power dissipation characteristics.

Part Context

The ISO7742DBQ belongs to the ISO774x family of high-performance digital isolators. This series utilizes capacitive coupling technology to provide robust signal isolation between circuits. The DBQ designation specifically identifies the 16-pin SSOP package version within the product line, distinguishing it from other package options like DW or DWR.

Replacement Considerations

ISO7742DWQR serves as a pin-compatible alternative offering higher isolation ratings in a different package.