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Automotive 35-V multi-switch detection interface (MSDI) with SPI & integrated ADC

Inventory: 6,755
Custom reel may be available

Download data sheet for TIC12400-Q1
  |   View additional information for TIC12400-Q1

Packaging information

Package | Pins HTSSOP (DCP) | 38
Operating temperature range (°C) Q (-40 to 125)
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


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C AmbientOperating Temperature
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification LevelC4B
  • Designed to Support 12-V Automotive Systems with Over-voltage and Under-voltage Warning
  • Monitors up to 24 Direct Switch Inputs with 10 Inputs Configurable to Monitor Switches Connected to Either Ground or Battery
  • Switch Input Withstands up to 40 V (Load Dump Condition) and down to –24 V (Reverse Polarity Condition)
  • 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 Thresholds for Digital Switch 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 Battery and Temperature Sensing
  • ±8 kV Contact Discharge ESD Protection on Input Pins per ISO-10605 With Appropriate External Components
  • 38-Pin TSSOP Package

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The TIC12400-Q1 is an advanced Multiple Switch Detection Interface (MSDI) designed todetect external switch status in a 12-V automotive system. The TIC12400-Q1 features an integrated10-bit ADC to monitor multi-position analog switches and a comparator to monitor digital switchesindependently of the MCU. Detection thresholds can be programmed for the ADC and the comparator tosupport various switch topologies and system non-idealities. The device monitors 24 direct switchinputs, with 10 inputs configurable to monitor switches connected to either ground or battery. 6unique wetting current settings can be programmed for each input to support different applicationscenarios. The device supports wake-up operation on all switch inputs to eliminate the need to keepthe MCU active continuously, thus reducing power consumption of the system. The TIC12400-Q1 alsooffers integrated fault detection, ESD protection, and diagnostic functions for improved systemrobustness. The TIC12400-Q1 supports 2 modes of operations: continuous and polling mode. Incontinuous mode, wetting current is supplied continuously. In polling mode, wetting current isturned on periodically to sample the input status based on a programmable timer, thus the systempower consumption is significantly reduced.

Qty Price
1-99 $2.31
100-249 $2.02
250-999 $1.42
1,000+ $1.14