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

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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 VSS(typical 4 s delay with a 3.3 μF capacitor).
    Two of the three supplies monitored (VCC1and VCC2) have fixed (customer-selectable, factory-trimmed) thresholds (VRST1and VRST2). 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 MRis asserted to logic low, a RSTis asserted (driven low). Once asserted, RSTis maintained at low for a minimum delay period (trec) after ALL supplies rise above their respective thresholds and MRreturns to high. These devices are guaranteed to be in the correct reset output logic state when VCC1and/or VCC2is greater than 0.8 V.
    These devices are available in standard 5-pin or 6-pin SOT23 packages.

    Key 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
    • RSToutputs (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)

Circuit Diagram

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Part Number
Package
Packing Type
Voltage Reset 1 (V) (typ)
Voltage Reset 2 (V) (typ)
Temperature (°C) Marketing Status
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STM6779SWB6F SOT23-6L Tape And Reel 2.925 - -40 85
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0.52
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Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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STM6779LWB6F SOT23-6L Tape And Reel 4.625 - -40 85
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0.52
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1000

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EAR99

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STM6779TWB6F SOT23-6L Tape And Reel 3.075 - -40 85
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STM6779YWB6F SOT23-6L Tape And Reel 2.188 - -40 85
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STM6779VWB6F SOT23-6L Tape And Reel 1.575 - -40 85
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STM6779SWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6779SWB6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2975 1 Order Now
MOUSER WORLDWIDE 2380 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

2975

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2380

Min.Order

1

Region

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Distributor reported inventory date: 2019-09-17

Voltage Reset 1 (V) (typ)

2.925

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6779LWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6779LWB6F

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ARROW AMERICA 3000 3000 Order Now
MOUSER WORLDWIDE 1315 1 Order Now

Distributor reported inventory date: 2019-09-17

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ARROW

Stock

3000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

1315

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-17

Voltage Reset 1 (V) (typ)

4.625

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6779TWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6779TWB6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 6000 1 Order Now
Newark Element14 AMERICA 870 0 Order Now
ARROW AMERICA 3000 3000 Order Now
MOUSER WORLDWIDE 4939 1 Order Now
Farnell Element14 EUROPE 1216 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

6000

Min.Order

1

Region

WORLDWIDE Order Now

Newark Element14

Stock

870

Min.Order

0

Region

AMERICA Order Now

ARROW

Stock

3000

Min.Order

3000

Region

AMERICA Order Now

MOUSER

Stock

4939

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1216

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Voltage Reset 1 (V) (typ)

3.075

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6779YWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6779YWB6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2692 1 Order Now
FUTURE WORLDWIDE 6000 3000 Order Now
P&S ASIA/PACIFIC 74 1 Order Now
MOUSER WORLDWIDE 4604 1 Order Now
Farnell Element14 EUROPE 1250 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

DIGIKEY

Stock

2692

Min.Order

1

Region

WORLDWIDE Order Now

FUTURE

Stock

6000

Min.Order

3000

Region

WORLDWIDE Order Now

P&S

Stock

74

Min.Order

1

Region

ASIA/PACIFIC Order Now

MOUSER

Stock

4604

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

1250

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-09-17

Voltage Reset 1 (V) (typ)

2.188

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6779VWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6779VWB6F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2725 1 Order Now

Distributor reported inventory date: 2019-09-17

Distributor Name

MOUSER

Stock

2725

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-17

Voltage Reset 1 (V) (typ)

1.575

Voltage Reset 2 (V) (typ)

-

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

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Technical Documentation

    • Description Version Size Action
      DS4345
      Dual/triple ultra-low voltage supervisors with push-button reset (with delay option)
      8.1
      637.63 KB
      PDF
      DS4345

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

    • Description Version Size Action
      TN0941
      Reset and supervisor ICs: frequently asked questions (FAQ)
      1.0
      328.63 KB
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      TN0941

      Reset and supervisor ICs: frequently asked questions (FAQ)

Publications and Collaterals

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      Resets and supervisors - portfolio overview 1.0
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Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM6779LWB6F
Active
SOT23-6L Industrial Ecopack3
STM6779SWB6F
Active
SOT23-6L Industrial Ecopack3
STM6779TWB6F
Active
SOT23-6L Industrial Ecopack3
STM6779VWB6F
Active
SOT23-6L Industrial Ecopack3
STM6779YWB6F
Active
SOT23-6L Industrial Ecopack3

STM6779LWB6F

Package:

SOT23-6L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6779SWB6F

Package:

SOT23-6L

Material Declaration**:

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6779TWB6F

Package:

SOT23-6L

Material Declaration**:

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6779VWB6F

Package:

SOT23-6L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6779YWB6F

Package:

SOT23-6L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.