STM6779TWB6F Resets and Voltage Detectors by STMicroelectronics

Dual/triple ultra-low voltage supervisors with push-button reset (with delay option)

Status: Active
Series: STM6779
RoHS: Compliant
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The STM6717/18/19/20 and STM6777/78/79/80 supervisors are a family of low-voltage/low-supply current processor (micro or DSP) supervisors, designed to monitor two (or three) system power supply voltages. They are targeted at applications such as set-top boxes (STBs), portable, battery-powered systems, networking, and communication systems. All device options have a push-button-type manual reset input ( MR ). The STM6777/78/79/80 also includes an option which enables the user to delay the start of the manual reset process from 6 μs (MRC pin left open) or more with external capacitor. The delay is implemented by connecting the appropriately sized capacitor between the MRC pin and V SS (typical 4 s delay with a 3.3 μF capacitor). Two of the three supplies monitored (V CC1 and V CC2 ) have fixed (customer-selectable, factory-trimmed) thresholds (V RST1 and V RST2 ). The third voltage is monitored using an externally adjustable RSTIN threshold (0.626 V internal reference). If any of the three monitored voltages drop below its factory-trimmed or adjustable thresholds, or if MR is asserted to logic low, a RST is asserted (driven low). Once asserted, RST is maintained at low for a minimum delay period (t rec ) after ALL supplies rise above their respective thresholds and MR returns to high. These devices are guaranteed to be in the correct reset output logic state when V CC1 and/or V CC2 is greater than 0.8 V. These devices are available in standard 5-pin or 6-pin SOT23 packages.

Prices starting from US$0.67


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Logo for Avnet America Avnet America US$0.73
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Logo for Newark Electronics Newark Electronics US$0.83
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Logo for Future Electronics Future Electronics US$0.67
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Logo for element14 element14 US$0.76
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Features

Primary supply (VCC1) monitor. Fixed (factory-programmed) reset thresholds: 4.63 V to 1.58 V
Secondary supply (VCC2) monitor (STM6717/18/19/20/77/78)
Fixed (factory-programmed) reset thresholds: 3.08 V to 0.79 V
Tertiary supply monitor (using externally adjustable RSTIN): 0.626 V internal reference
RST outputs (push-pull or open drain); state guaranteed if VCC1or VCC2≥ 0.8 V
Reset delay time (trec) on power-up: 13.2 ms, 210 ms, 900 ms (typ)
Manual reset input (MR )
Optional delayed manual reset input (MRC) with external capacitor (STM6777/78/79/80)
Low supply current - 11 μA (typ), VCC1= VCC2 = 3.6 V
Operating temperature: –40 °C to 85 °C (industrial grade)

Alternative Descriptions

Processor Supervisor 1.665V/Adj 0.8V to 5.5V 6-Pin SOT-23 T/R | Avnet America
Mpu Supervisor, 5.5V, Sot-23-6 | Newark Electronics
SOT 23 - 6L | Future Electronics
MPU SUPERVISOR, 5.5V, SOT-23-6 | element14


Frequently Asked Questions

Where can I find additional details, specifications and documents for a STM6779TWB6F?

Additional datasheets, footprints and schematics for STM6779TWB6F are listed on our Part Details page. You can also find images and similar parts to STM6779TWB6F on this page.

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What category does STM6779TWB6F fall under?

The STM6779TWB6F is listed under Reset and Supervisor ICs > Resets and Voltage Detectors.

Can I view similar or alternative parts?

You can view similar parts to STM6779TWB6F when available in the Resets and Voltage Detectors range under the specifications section at the bottom of the details page.

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Submit any questions directly to the customer support team of the distributor listing the product. For the STM6779TWB6F you can contact the distributor directly for product support, shipping queries etc.

Is the STM6779TWB6F RoHS compliant?

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

Which authorised distributors for STM6779TWB6F have stock available?

Authorised distributors including Avnet America, Newark Electronics, Future Electronics, element14 and Farnell have stock available or on a lead time for STM6779TWB6F.

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