SR2LABU Smart Reset ICs by STMicroelectronics

6 pin Smart Reset


The Smart Reset™ devices provide a useful feature that ensures inadvertent short reset push-button closures do not cause system resets. This is done by implementing extended Smart Reset™ input delay time (t SRC ) and combined push-button inputs, which together 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 are connected to microcontroller interrupt inputs, and are 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 SR2 has two combined delayed Smart Reset™ inputs ( SR0 , SR1 ) with preset delayed Smart Reset™ setup time (t SRC ). The reset output is asserted after both of the Smart Reset™ inputs were held active for the selected t SRC delay time. Depending on selected option the RST output remains asserted either until at least one 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 reset output, RST , is active low or active high, push-pull or open drain with optional pull-up resistor. The device fully operates over a broad V CC range 1.65 V to 5.5 V. Below 1.575 V typ. the inputs are ignored and outputs are deasserted; the deasserted reset output levels are then valid down to 1.0 V.

Where to Buy

Prices starting from US$0.26

Distributor Stock
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Future Electronics
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Features

Operating voltage 1.65 V to 5.5 V
Low supply current 1.5 μA
Integrated test mode
Dual Smart Reset™ push-button inputs with fixed extended reset setup delay (tSRC) from 0.5 s to 10 s in 0.5 s steps (typ.), option with internal 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
No power-on reset
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: 1.6 mm x 1.3 mm
ECOPACK®2 (RoHS compliant, Halogen-Free)

Alternative Descriptions

SR2 Series 5.5 V 360 ms Adjustable/Selectable Smart ResetÔ - UDFN-6 | Future Electronics
Smart Reset Device 6-Pin UDFN T/R | Avnet America
SUPERVISOR, RESET, 5.5V, UDFN-6 | Farnell


Frequently Asked Questions

Where can I find additional details, specifications and documents for a SR2LABU?

Additional datasheets, footprints and schematics for SR2LABU are listed on our Part Details page. You can also find images and similar parts to SR2LABU on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for SR2LABU on our Product Comparison page. Access via the 'View Pricing & Stock' button to view SR2LABU price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does SR2LABU fall under?

The SR2LABU is listed under Reset and Supervisor ICs > Smart Reset ICs.

Can I view similar or alternative parts?

You can view similar parts to SR2LABU 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 SR2LABU you can contact the distributor directly for product support, shipping queries etc.

Is the SR2LABU RoHS compliant?

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

Which authorised distributors for SR2LABU have stock available?

Authorised distributors including Future Electronics, Avnet America, Farnell, EBV Elektronik and Avnet Silica have stock available or on a lead time for SR2LABU.

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