24-Input Multiple Switch Detection Interface (MSDI) With Integrated ADC and Adjustable Wetting Current for Automotive Systems,P2P TIC12400-Q1.
TMF82124-Q1.pdf优势替代
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 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
PIN CONFIGUTION
