STWD100YNWWY3F Watchdog Timers by STMicroelectronics

Watchdog timer circuit

Status: Active
Series: STWD100
RoHS: Compliant
View Datasheet Manufacturer Site View Pricing & Stock

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.

Prices starting from US$0.56


Distributor Starting From Stock
Logo for Future Electronics Future Electronics US$0.56
39,000
Buy Now
Logo for element14 element14 US$0.83
8,193
Buy Now
Logo for Chip One Stop Chip One Stop US$0.96
3,000
Buy Now
Logo for Newark Electronics Newark Electronics US$0.82
-
Buy Now
Logo for Avnet America Avnet America US$0.59
-
Buy Now
Logo for EBV Elektronik EBV Elektronik -
-
Buy Now
Logo for Avnet Silica Avnet Silica -
-
Buy Now
View Full Pricing & Stock Comparison

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 13 uA Surface Mount Watchdog Timer Circuit - SOT-23-5 | Future Electronics
WATCHDOG TIMER, 5.5V, SOT-23-5 | element14
Watchdog Timer, 5.5V, Sot-23-5 | Newark Electronics
Watchdog Timer 5-Pin SOT-23 T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a STWD100YNWWY3F?

Additional datasheets, footprints and schematics for STWD100YNWWY3F are listed on our Part Details page. You can also find images and similar parts to STWD100YNWWY3F on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for STWD100YNWWY3F on our Product Comparison page. Access via the 'View Pricing & Stock' button to view STWD100YNWWY3F price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does STWD100YNWWY3F fall under?

The STWD100YNWWY3F is listed under Reset and Supervisor ICs > Watchdog Timers.

Can I view similar or alternative parts?

You can view similar parts to STWD100YNWWY3F when available in the Watchdog Timers range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the STWD100YNWWY3F you can contact the distributor directly for product support, shipping queries etc.

Is the STWD100YNWWY3F RoHS compliant?

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

Which authorised distributors for STWD100YNWWY3F have stock available?

Authorised distributors including Future Electronics, element14, Farnell, Chip One Stop and Newark Electronics have stock available or on a lead time for STWD100YNWWY3F.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for STWD100YNWWY3F often in real-time on the comparison pages.

What if I can't find stock of STWD100YNWWY3F?

You can fill out our help required form which you can use to request a quote for STWD100YNWWY3F from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

We use cookies to improve your experience. See our privacy policy.
Okay