ISO7731DBQR

Overview

The ISO7731DBQR is a high-speed, robust-EMC reinforced triple-channel digital isolator manufactured by Texas Instruments. It utilizes capacitive coupling technology to provide electrical isolation between circuits. The device features three independent channels with two unidirectional forward paths and one reverse path. It operates within a supply voltage range of 2.25 V to 5.5 V and supports data rates up to 100 Mb/s. Key electrical parameters include an insulation voltage of 2500 Vrms, a propagation delay of 11 ns, and a power dissipation of 150 mW. The component is housed in an SSOP-16 package and functions reliably across a temperature range of -55°C to +125°C.

Feature Summary

• Provides reinforced isolation using capacitive coupling technology for robust electromagnetic compatibility performance.
• Integrates three independent signal channels with asymmetric configuration of two forward and one reverse direction.
• Operates without a shutdown function, maintaining continuous signal transmission during active periods.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power electronics control interfaces

Procurement Notes

Verify the specific suffix DBQR corresponds to the SSOP-16 surface-mount package and tape-and-reel packaging format. Confirm that the component meets the required industrial temperature grade (-55°C to +125°C) for your application environment. Ensure compliance with RoHS directives as indicated in official specifications before finalizing procurement orders.

Selection Notes

Select this component when a triple-channel isolator with high-speed data transmission is required. The ISO7731DBQR is suitable for applications demanding robust EMC performance and wide operating temperature ranges. Consider the unidirectional channel configuration and lack of shutdown functionality when designing circuit logic. Verify that the SSOP-16 footprint fits the PCB layout constraints.

Part Context

This part belongs to the ISO7731 series of digital isolators from Texas Instruments. It is distinct from automotive-grade variants like the ISO7731QDBQRQ1, which carries AEC-Q100 qualification. The standard ISO7731DBQR is designed for general industrial and commercial applications rather than automotive use cases.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult official manufacturer resources for cross-reference information or equivalent components with matching pinouts and electrical characteristics.