STWD100YNYWY3F Watchdog Timers by STMicroelectronics

Watchdog timer circuit

Status: Active
Series: STWD100
RoHS: Compliant
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The STWD100 watchdog timer circuits are self-contained devices which prevent system failures that are caused by certain types of hardware errors (such as, non-responding peripherals and bus contention) or software errors (such as a bad code jump and a code stuck in loop). The STWD100 watchdog timer has an input, WDI, and an output, WDO . The input is used to clear the internal watchdog timer periodically within the specified timeout period, t wd . While the system is operating correctly, it periodically toggles the watchdog input, WDI. If the system fails, the watchdog timer is not reset, a system alert is generated and the watchdog output, WDO , is asserted. The STWD100 circuit also has an enable pin, EN , which can enable or disable the watchdog functionality. The EN pin is connected to the internal pull-down resistor. The device is enabled if the EN pin is left floating.

Where to Buy

Prices starting from US$0.54

Distributor Stock
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RS
from US$0.83
14,090
in stock
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Future Electronics
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132,000
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Newark Electronics
from US$0.70
10,005
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element14
from US$0.82
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Farnell
from US$0.81
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Avnet America
from US$0.59
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Avnet Silica
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Features

Current consumption 13 µA typ.
Available watchdog timeout periods are 3.4 ms, 6.3 ms, 102 ms, and 1.6 s
Chip enable input
Open drain or push-pullWDO output
Operating temperature range: –40 to 125 °C
Packages: SOT23-5 and SC70-5 (SOT323-5)
ESD performance HBM: 2000 V RCDM: 1000 V
HBM: 2000 V
RCDM: 1000 V
Automotive qualified

Alternative Descriptions

STWD100 Series 5.5 V Surface Mount Watchdog Timer Circuit - SOT23-5L | Future Electronics
STWD100YNYWY3F, Voltage Supervisors | RS
Supervisor, Watchdog, Aec-Q100, Sot-23-5 | Newark Electronics
SUPERVISOR, WATCHDOG, AEC-Q100, SOT-23-5 | element14
Processor Supervisor 5-Pin SOT-23 T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a STWD100YNYWY3F?

Additional datasheets, footprints and schematics for STWD100YNYWY3F are listed on our Part Details page. You can also find images and similar parts to STWD100YNYWY3F on this page.

What pricing and inventory information can I view?

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What category does STWD100YNYWY3F fall under?

The STWD100YNYWY3F is listed under Reset and Supervisor ICs > Watchdog Timers.

Can I view similar or alternative parts?

You can view similar parts to STWD100YNYWY3F when available in the Watchdog Timers range under the specifications section at the bottom of the details page.

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Is the STWD100YNYWY3F RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by STMicroelectronics.

Which authorised distributors for STWD100YNYWY3F have stock available?

Authorised distributors including Future Electronics, RS, Newark Electronics, element14 and Farnell have stock available or on a lead time for STWD100YNYWY3F.

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