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
Budgetary Price (US$)*
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STM6778TZWB6F SOT23-6L Tape And Reel 3.075 2.313 -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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STM6778TGWB6F SOT23-6L Tape And Reel 3.075 1.11 -40 85
Active
0.52
MORE INFO

Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

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STM6778TWWB6F SOT23-6L Tape And Reel 3.075 1.665 -40 85
Active
0.52
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Quantity:

1000

ECCN (US):

EAR99

Country of Origin:

MALAYSIA

No availability of distributors reported, please contact our sales office Buy now
STM6778SVWB6F SOT23-6L Tape And Reel 2.925 1.575 -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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STM6778SFWB6F SOT23-6L Tape And Reel 2.925 1.05 -40 85
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0.52
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Quantity:

1000

ECCN (US):

EAR99

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STM6778SYWB6F SOT23-6L Tape And Reel 2.925 2.188 -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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MOUSER WORLDWIDE 3000 1 Order Now

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STM6778TZWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Voltage Reset 1 (V) (typ)

3.075

Voltage Reset 2 (V) (typ)

2.313

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6778TGWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Voltage Reset 1 (V) (typ)

3.075

Voltage Reset 2 (V) (typ)

1.11

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6778TWWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Voltage Reset 1 (V) (typ)

3.075

Voltage Reset 2 (V) (typ)

1.665

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6778SVWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6778SVWB6F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 2500 1 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

MOUSER

Stock

2500

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-18

Voltage Reset 1 (V) (typ)

2.925

Voltage Reset 2 (V) (typ)

1.575

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6778SFWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Voltage Reset 1 (V) (typ)

2.925

Voltage Reset 2 (V) (typ)

1.05

Operating Temperature (°C)

(min)

-40

(max)

85

Marketing Status

Active

Unit Price (US$)

0.52

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

STM6778SYWB6F

Package

SOT23-6L

Packing Type

Tape And Reel

Unit Price (US$)

0.52*

Distributor availability ofSTM6778SYWB6F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 3000 1 Order Now

Distributor reported inventory date: 2019-09-18

Distributor Name

MOUSER

Stock

3000

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2019-09-18

Voltage Reset 1 (V) (typ)

2.925

Voltage Reset 2 (V) (typ)

2.188

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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00 Files selected for download

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
      PDF
      TN0941

      Reset and supervisor ICs: frequently asked questions (FAQ)

Publications and Collaterals

    • Description Version Size Action
      Resets and supervisors - portfolio overview 1.0
      1.31 MB
      PDF

      Resets and supervisors - portfolio overview

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM6778SFWB6F
Active
SOT23-6L Industrial Ecopack3
STM6778SVWB6F
Active
SOT23-6L Industrial Ecopack3
STM6778SYWB6F
Active
SOT23-6L Industrial Ecopack3
STM6778TGWB6F
Active
SOT23-6L Industrial Ecopack3
STM6778TWWB6F
Active
SOT23-6L Industrial Ecopack3
STM6778TZWB6F
Active
SOT23-6L Industrial Ecopack3

STM6778SFWB6F

Package:

SOT23-6L

Material Declaration**:

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6778SVWB6F

Package:

SOT23-6L

Material Declaration**:

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6778SYWB6F

Package:

SOT23-6L

Material Declaration**:

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6778TGWB6F

Package:

SOT23-6L

Material Declaration**:

PDF XML

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6778TWWB6F

Package:

SOT23-6L

Material Declaration**:

Marketing Status

Active

Package

SOT23-6L

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6778TZWB6F

Package:

SOT23-6L

Material Declaration**:

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.