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DATA SHEET
TIC12400-Q1 24-Input Multiple Switch Detection Interface (MSDI) With Integrated ADC and Adjustable Wetting Current for Automotive Systems
1 Features
- Qualified for automotive applications
- AEC-Q100 qualified with the following results:
- Device temperature grade 1: –40°C to 125°C ambient
operating temperature
- Device HBM ESD classification level H2
- Device CDM ESD classification level C4B
- Functional Safety-Capable
- 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
