TIC12400DCPR

Specialized Overview

The TIC12400DCPR is a 24-input Multiple Switch Detection Interface (MSDI) device designed for industrial applications. It operates with a supply voltage (VS) ranging from 6.5 V to 35 V and features an integrated 10-bit ADC for multi-position analog switch monitoring. The device supports up to 24 direct inputs, with 10 configurable to monitor switches connected to either ground or the supply rail. It includes adjustable wetting current settings of 0 mA, 1 mA, 2 mA, 5 mA, 10 mA, and 15 mA. Communication with a microcontroller is achieved via a 3.3 V/5 V SPI interface, supporting wake-up operations on all inputs.

Specialized Feature Summary

• Monitors up to 24 direct switch inputs with configurable ground or supply connections
• Features an integrated 10-bit ADC for multi-position analog switch detection
• Supports programmable wetting currents to ensure reliable switch contact closure
• Interfaces directly to microcontrollers using a standard 3.3 V or 5 V SPI protocol

Specialized Applications

• Signal measurement systems
• Programmable Logic Controllers (PLC)
• Distributed Control Systems (DCS)
• Process Automation Controllers (PAC)
• Industrial instrumentation

Specialized Procurement Notes

Verify the package marking code DCP corresponds to the 38-pin TSSOP form factor. Confirm that the suffix PR indicates tape-and-reel packaging if reel handling is required for assembly. Ensure the operating environment stays within the specified temperature range for the selected supply voltage conditions.

Specialized Selection Notes

Select this component when a high number of discrete switch inputs must be monitored by a low-voltage MCU. Consider the polling mode for significant power savings in battery-operated systems. Verify that the input voltage withstand capability meets the system's maximum fault conditions.

Specialized Part Context

This part belongs to Texas Instruments' MSDI family, which specializes in detecting external switch statuses. It serves as an interface between mechanical switches and digital controllers, replacing multiple discrete components. The series focuses on robustness against electrical noise and providing integrated protection features for industrial environments.

Specialized Replacement Considerations

TIC10024-Q1: A similar 24-input MSDI device without the integrated ADC.