ISO1212SDBQR

Overview

The ISO1212SDBQR is a dual-channel isolated digital input receiver manufactured by Texas Instruments. It operates within an input voltage range of 24 V to 60 V and supports data rates up to 4 Mbps. The device provides 2500 Vrms isolation voltage and exhibits a common-mode transient immunity (CMTI) of 25 kV/µs. It functions with supply voltages between 2.25 V and 5.5 V, featuring propagation delays of 140 ns and 15 ns for its channels. The component is housed in a 16-SSOP package and operates across a temperature range of -40°C to 125°C.

Feature Summary

• Designed specifically for digital input modules requiring high-voltage isolation
• Provides robust signal integrity through high common-mode transient immunity
• Supports wide input voltage ranges suitable for industrial sensor interfaces

Applications

• Digital input modules in industrial automation systems
• Isolated interfaces for PLCs and distributed I/O systems
• Sensor interface circuits in harsh electrical environments

Procurement Notes

Verify the specific suffix 'S' against the manufacturer's current datasheet to confirm pinout and marking variations. Ensure the required isolation voltage rating matches system safety standards. Confirm package dimensions align with PCB footprint requirements. Check for RoHS compliance status relevant to the target market regulations.

Selection Notes

Select this component when interfacing high-voltage digital inputs with low-voltage logic controllers. The dual-channel configuration reduces board space compared to single-channel alternatives. Consider the 25 kV/µs CMTI rating for environments with rapid voltage switching. Evaluate the 16-SSOP package size against available layout area constraints.

Part Context

This part belongs to the ISO121x family of isolated digital input receivers from Texas Instruments. The series focuses on providing galvanic isolation for industrial control applications. It complements other devices like the ISO1211SDR, which offers single-channel isolation. The family utilizes capacitive coupling technology for signal transmission across the isolation barrier.

Replacement Considerations

The ISO1212DBQR is listed as a related product with similar specifications but may differ in package type or channel configuration. Verify functional equivalence before substitution.