ISO1212DBQ

Overview

The ISO1212DBQ is a dual-channel digital isolator manufactured by Texas Instruments, designed for robust signal transmission across isolation barriers. It supports input voltage ranges from 24 V to 60 V, making it suitable for industrial digital input modules. The device offers a high data rate of 4 Mbps and provides a common-mode transient immunity (CMTI) of 25 kV/µs. It operates within an extended temperature range of -40°C to +125°C and features a propagation delay of up to 140 ns. Packaged in a 16-pin SSOP, it ensures reliable galvanic isolation for demanding applications.

Feature Summary

• Dual-channel architecture for simultaneous signal isolation
• High common-mode transient immunity for noise rejection
• Wide operating temperature range for harsh environments
• Supports high-speed digital data transmission

Applications

• Digital input modules in industrial automation systems
• Isolated communication interfaces in noisy electrical environments
• General-purpose digital isolation in control circuits

Procurement Notes

Verify the specific package variant, as the DBQR suffix denotes tape-and-reel packaging while DBQ indicates tube packaging. Confirm that the 24 V to 60 V input range aligns with your system's logic levels. Ensure compatibility with the required data rate and isolation voltage specifications for your application design.

Selection Notes

Select this component when high CMTI is critical to prevent false triggering in electrically noisy environments. The wide input voltage range accommodates various industrial logic standards. Consider the thermal performance and package size constraints when integrating into dense PCB layouts requiring extended temperature operation.

Part Context

This part belongs to Texas Instruments' ISO1212 family of digital isolators, which are engineered for high reliability in industrial settings. The family emphasizes robust isolation characteristics and fast switching speeds to support modern digital communication protocols in automated machinery and control systems.

Replacement Considerations

The ISO1212DBQR is a direct functional equivalent differing only in packaging format (tape-and-reel vs. tube). Verify pinout compatibility and ensure the replacement matches the required insulation clearance and creepage distances for safety certifications.