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24-input sensor monitor with integrated 1:1 (SPST), 10-channel ADC & SPI

Inventory: 3,980
Custom reel may be available

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  |   View additional information for TIC12400

Packaging information

Package | Pins HTSSOP (DCP) | 38
Operating temperature range (°C) T (-40 to 105)
Package qty | Carrier: 2,000 | LARGE T&R
Custom reel may be available
View more packaging information

Quality information

RoHS Yes
Lead finish / Ball material NIPDAU
MSL rating / Peak reflow Level-3-260C-168 HR
Material content View
DPPM / MTBF / Fit rate View
Qualification summary View
Ongoing reliability monitoring View
Device marking View


  • 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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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.

Qty Price
1-99 $1.96
100-249 $1.71
250-999 $1.20
1,000+ $0.97