Automotive ICs

Automotive, 125°C Operation, 3.8 μA Current Consumption Watchdog Timer (Time-out mode) with Reset Function S-19405 Series

The S-19405 Series is a watchdog timer developed using CMOS technology, which can operate with low current
consumption of 3.8 μA typ. The reset function and the low voltage detection function are available.

FIT rate calculation
ABLIC Inc. offers FIT rate calculated based on actual customer usage conditions in order to support customer functional safety design.
For more information regarding our FIT rate calculation, contact our sales representatives.

Caution: This product can be used in vehicle equipment and in-vehicle equipment. Before using the product for these purposes, it is imperative to contact our sales representatives.


Detection voltage
2.0 V to 5.0 V, selectable in 0.1 V step
Detection voltage accuracy
Input voltage
Vdd  = 0.9 V to 6.0 V
Hysteresis width
5% typ.
Current consumption during watchdog timer operation
3.8 μA typ. 
Reset time-out period
14.5 ms typ. (Cpor = 2200 pF)
Watchdog time-out period
24.6 ms typ. (Cwdt = 470 pF)
Watchdog operation is switchable
Enable, Disable
Watchdog operation voltage range
VDD = 2.5 V to 6.0 V
Watchdog input edge is selectable
Rising edge, falling edge
Watchdog mode
Time-out mode
Operation temperature range
Ta = −40°C to +125°C
Lead-free (Sn 100%), halogen-free
AEC-Q100 qualified*1

*1. Contact our sales representatives for details.


  • For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)