TIC10024-Q1 24-Input Multiple Switch Detection Interface (MSDI) Device With 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
- Documentation available to aid functional safety system design
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 comparator with 4 programmable thresholds for digital switch monitoring
Ultra-low operating current in polling mode:
68 μA typical (t_POLL = 64 ms, t_{POLL_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
±8 kV Contact discharge ESD protection on input pins per ISO-10605 with appropriate external components
38-Pin TSSOP package