TIC12400QDCPRQ1

Specialized Overview

The TIC12400QDCPRQ1 is a Texas Instruments automotive-grade 24-input Multiple Switch Detection Interface (MSDI) device. It features an integrated 10-bit ADC for analog switch monitoring and adjustable wetting currents ranging from 0 mA to 15 mA across six programmable settings. The device supports up to 24 direct inputs, including ten configurable digital I/O switches, with input pins tolerating voltages from -24 V to 40 V. Powered by a supply voltage (VS) between 6.5 V and 35 V, it includes overvoltage and undervoltage warnings. Communication with the host microcontroller is handled via a 3.3 V/5 V serial peripheral interface (SPI).

Specialized Feature Summary

• Supports continuous or polling operation modes to optimize system power consumption.
• Integrates a comparator with four programmable thresholds for independent digital switch monitoring.
• Provides interrupt generation capabilities on all inputs to enable wake-up operations without keeping the MCU active.

Specialized Applications

• Signal measurement systems in industrial automation.
• Programmable Logic Controllers (PLC), Digital Signal Controllers (DSC), and Programmable Automation Controllers (PAC).
• Instrumentation requiring multi-switch detection interfaces.

Specialized Procurement Notes

Verify the specific package variant and tape-and-reel specifications against the official datasheet before ordering. Confirm that the AEC-Q100 qualification status meets your project's reliability requirements. Ensure the selected quantity aligns with the manufacturer's standard packaging units to avoid unnecessary handling fees.

Specialized Selection Notes

Select this component when designing systems requiring extensive switch monitoring with minimal MCU overhead. The adjustable wetting current feature allows adaptation to various switch types, reducing mechanical wear. Consider the polling mode for applications where ultra-low standby current is critical compared to continuous monitoring scenarios.

Specialized Part Context

This part belongs to the TIC12400 family of MSDI devices designed for automotive and industrial environments. It serves as a specialized interface solution for detecting external switch states, offering higher integration than discrete solutions by combining sensing, signal conditioning, and communication in a single 38-pin HTSSOP package.

Specialized Replacement Considerations

The TIC10024-Q1 is a related device within the same family but lacks the integrated ADC found in the TIC12400. Verify if analog switch monitoring is required; if not, the TIC10024 may be a suitable alternative. Cross-reference pinouts and SPI compatibility before substitution.