The TIC12400-Q1 is an advanced Multiple Switch Detection Interface (MSDI) designed to detect external switch status in a 12-V automotive system. The TIC12400-Q1 features an integrated 10-bit ADC to monitor multi-position analog switches and a comparator to monitor digital switches independently of the MCU. Detection thresholds can be programmed for the ADC and the comparator to support various switch topologies and system non-idealities. The device monitors 24 direct switch inputs, with 10 inputs configurable to monitor switches connected to either ground or battery. 6 unique wetting current settings can be programmed for each input to support different application scenarios. The device supports wake-up operation on all switch inputs to eliminate the need to keep the MCU active continuously, thus reducing power consumption of the system. The TIC12400-Q1 also offers integrated fault detection, ESD protection, and diagnostic functions for improved system robustness. The TIC12400-Q1 supports 2 modes of operations: continuous and polling mode. In continuous mode, wetting current is supplied continuously. In polling mode, wetting current is turned on periodically to sample the input status based on a programmable timer, thus the system power consumption is significantly reduced.
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Number of inputs |
Operating voltage (Min) (V) |
Operating voltage (Max) (V) |
I/O voltage (Min) (V) |
I/O voltage (Max) (V) |
IO current (mA) |
Operating temperature range (C) |
Package Group |
Package size: mm2:W x L (PKG) |
Interface |
Features |
Diagnostics |
Logic voltage (Min) (V) |
Logic voltage (Max) (V) |
TIC12400-Q1 | TIC10024-Q1 |
---|---|
24 | 24 |
4.5 | 4.5 |
35 | 35 |
-24 | -24 |
40 | 40 |
1 2 5 10 15 |
1 2 5 10 15 |
-40 to 125 | -40 to 125 |
HTSSOP | 38 | HTSSOP | 38 |
38HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 38) | 38HTSSOP: 43 mm2: 4.4 x 9.7 (HTSSOP | 38) |
SPI | SPI |
Integrated 10-bit ADC Polling mode Configurable wetting current Overvoltage warning Undervoltage warning SPI Interrupt wake-up operation Withstands load dump condition and reverse polarity condition |
Polling mode Configurable wetting current Overvoltage warning Undervoltage warning SPI Interrupt wake-up operation Withstands load dump condition and reverse polarity condition |
Wetting Current Diagnostic ADC Self-Diagnostic |
|
3 | 3 |
5.5 | 5.5 |
Order now | Order now |