TIC12400DCPR

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TIC12400DCPR

24-Input Sensor Monitor With SPI Interface

Packaging

Package | PIN: DCP | 38
Temp: T (-40 to 105)
Carrier: Cut Tape
Qty Price
1-9 $2.33
10-24 $2.10
25-99 $1.96
100-249 $1.71
250-499 $1.61
500-749 $1.37
750-999 $1.15
1000+ $1.10

Features

  • Operates with Supply Voltage (VS) from 6.5 V to 35 V with Over-voltage and Under-voltage Warning
  • Monitors up 24 Direct Switch Inputs with 10 Inputs Configurable to Monitor Switches Connected to Either Ground or Supply
  • Switch Input Withstands 40 V and Reverse Supply Condition Down to -24 V
  • 6 Configurable Wetting Current Settings:
    (0 mA, 1 mA, 2 mA, 5 mA, 10 mA, and 15 mA)
  • Integrated 10-bit ADC for Multi-Position Analog Switch Monitoring
  • Integrated Comparator with 4 Programmable Threshold for Input Monitoring
  • Ultra-low Operating Current in Polling Mode:
    68 µA Typical (tPOLL = 64 ms, tPOLL_ACT = 128 µs,
    All 24 Inputs Active, Comparator Mode, All Switches Open)
  • Interfaces Directly to MCU Using 3.3 V/5 V Serial Peripheral Interface (SPI) Protocol
  • Interrupt Generation to Support Wake-Up Operation on All Inputs
  • Integrated Supply and Temperature Sensing
  • ±8 kV Contact Discharge ESD Protection on Input Pins per IEC 61000-4-2 With Appropriate External Components
  • 38-Pin TSSOP Package

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Texas Instruments  TIC12400DCPR

The TIC12400 is an advanced Multiple Switch Detection Interface (MSDI) device designed todetect external switch statuses. The TIC12400 supports 24 direct inputs, with 10 inputsconfigurable to monitor digital I/O switches. 6 wetting current settings can be programmed for eachinput to support different application scenarios. The TIC12400 features an integrated 10-bit ADC tomonitor multi-position analog switches and a comparator to monitor digital switches independentlyof the MCU. The device supports wake-up operation on all switch inputs to eliminate the need tokeep the MCU active continuously, thus reducing power consumption of the system. The TIC12400supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current issupplied continuously. In polling mode, wetting current is turned on periodically to sample theinput status based on a programmable timer, thus the system power consumption is significantlyreduced. The TIC12400 also offers various fault detection and diagnostic features for improvedsystem robustness.