SR1PARU Smart Reset ICs by STMicroelectronics

4 pin Smart Reset

Status: Active
Series: SR1
RoHS: Compliant
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The Smart Reset TM devices provide a useful feature which ensures that inadvertent short reset push-button closures do not cause system resets. This is done by implementing an extended Smart Reset input delay time (t SRC ), which ensures a safe reset and eliminates the need for a specific dedicated reset button. This reset configuration provides versatility and allows the application to distinguish between a software generated interrupt and a hard system reset. When the input push-button is connected to the microcontroller interrupt input, and is closed for a short time, the processor can only be interrupted. If the system still does not respond properly, continuing to keep the push-button closed for the extended setup time t SRC causes a hard reset of the processor through the reset output. The SR1 has one Smart Reset input ( SR ) with preset delayed Smart Reset setup time (t SRC ). The reset output ( RST ) is asserted after the Smart Reset input is held active for the selected t SRC delay time. The RST output remains asserted either until the SR input goes to inactive logic level (i.e. neither fixed nor minimum reset pulse width is set) or the output reset pulse duration is fixed for t REC (i.e. factory-programmed). The device fully operates over a broad V CC range from 2.0 V to 5.5 V.

Prices starting from US$0.43


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$0.57
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Logo for element14 element14 US$0.53
238
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Logo for Future Electronics Future Electronics US$0.43
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Logo for Avnet America Avnet America US$0.45
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Features

Operating voltage range 2 V to 5.5 V
Low supply current 1 μA
Integrated test mode
Single Smart Reset™ push-button input with fixed extended reset setup delay (tSRC) from 0.5 s to 10 s in 0.5 s steps (typ.), option with internal input pull-up resistor
Push-button controlled reset pulse duration Option 1: fully push-button controlled, no fixed or minimum pulse width guaranteed Option 2: defined output reset pulse duration (tREC), factory-programmed
Option 1: fully push-button controlled, no fixed or minimum pulse width guaranteed
Option 2: defined output reset pulse duration (tREC), factory-programmed
Single reset output Active low or active high Push-pull or open drain with optional pull-up resistor
Active low or active high
Push-pull or open drain with optional pull-up resistor
Fixed Smart Reset input logic voltage levels
Operating temperature: -40 °C to +85 °C
UDFN6 package 1.00 mm x 1.45 mm
ECOPACK®2 (RoHS compliant, Halogen-Free)

Alternative Descriptions

SUPERVISOR, RESET, 5.5V, UDFN-6 | Farnell Contract
Supervisor, Reset, 5.5V, Udfn-6 | Newark Electronics
SR1 Series 5.5 V 1 uA SMT Adjustable/Selectable Smart Reset - UDFN-6 | Future Electronics
4-Pin Smart Reset Device 6-Pin UDFN T/R | Avnet America


Frequently Asked Questions

Where can I find additional details, specifications and documents for a SR1PARU?

Additional datasheets, footprints and schematics for SR1PARU are listed on our Part Details page. You can also find images and similar parts to SR1PARU on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for SR1PARU on our Product Comparison page. Access via the 'View Pricing & Stock' button to view SR1PARU price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does SR1PARU fall under?

The SR1PARU is listed under Reset and Supervisor ICs > Smart Reset ICs.

Can I view similar or alternative parts?

You can view similar parts to SR1PARU when available in the Smart Reset ICs 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 SR1PARU you can contact the distributor directly for product support, shipping queries etc.

Is the SR1PARU RoHS compliant?

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

Which authorised distributors for SR1PARU have stock available?

Authorised distributors including Farnell Contract, Newark Electronics, element14, Future Electronics and Avnet America have stock available or on a lead time for SR1PARU.

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