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  • The STM6905 supervisor is a low voltage/low supply current processor supervisor, designed to monitor up to five system power supply voltages. This device is targeted at applications such as set-top boxes (STBs), portable, battery-powered systems, networking and communication systems.

    The device supports a push-button type manual reset input (MR). Two of the five supply monitors (VCCand V2IN) have fixed (customer-selectable, factory-trimmed) thresholds (VRST1and VRST2). The other three voltage monitor inputs (V3IN, V4IN and V5IN) are monitored using externally adjustable threshold (600 mV internal reference) to meet specific level requirements.
    If any of the five monitored voltages drops below its factory-trimmed or adjustable thresholds, or if the MRis asserted to logic low, the reset output RSTis asserted (driven low). Once asserted, RSTis maintained low for a minimum delay period (tREC) after ALL monitored supplies rise above their respective thresholds and MRreturns to high. The reset output logic state is valid for VCCgreater than 0.8 V.
    The STM6905 is available in a standard 8-lead MSOP (TSSOP) package.

    Key Features

    • Quintuple voltage monitoring
    • Accurate ±1.8 % across temperature voltage threshold (±1 % at 25 °C)
    • Primary supply (VCC) monitor. Fixed (factory -programmed) reset thresholds: 3.078 V to 2.866 V
    • Second fixed (V2IN) monitor. Fixed (factory-programmed) reset thresholds: 2.333 V to 1.050 V
    • Three additional adjustable supply monitor inputs (externally adjustable)
    • 600 mV internal reference
    • RSToutput (open drain)
    • Output guaranteed for VCC ≥ 0.8 V
    • Reset delay time (TREC) on power-up: 210 ms (typ)
    • Manual reset input (MR)
    • Low supply current of 12 μA (typ)
    • Power supply voltage 0.8 V to 5.5 V
    • RoHS compliant (green package)
    • 8-pin MSOP/TSSOP
    • Operating temperature: –40 °C to 85 °C (industrial grade)

Circuit Diagram

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Technical Documentation

    • Description Version Size Action
      DS5649
      Quintuple, ultralow voltage supervisor with push-button reset
      4.0
      414.06 KB
      PDF
      DS5649

      Quintuple, ultralow voltage supervisor with push-button reset

    • 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

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
STM6905PWEDS6F
Active
MSOP/TSSOP 8 Industrial Ecopack3
STM6905SFEDS6F
Active
MSOP/TSSOP 8 Industrial Ecopack3
STM6905SYEDS6F
Active
MSOP/TSSOP 8 Industrial Ecopack3
STM6905TGEDS6F
Active
MSOP/TSSOP 8 Industrial Ecopack3
STM6905TWEDS6F
Active
MSOP/TSSOP 8 Industrial Ecopack3
STM6905TZEDS6F
Active
MSOP/TSSOP 8 Industrial Ecopack3

STM6905PWEDS6F

Package:

MSOP/TSSOP 8

Material Declaration**:

Marketing Status

Active

Package

MSOP/TSSOP 8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6905SFEDS6F

Package:

MSOP/TSSOP 8

Material Declaration**:

Marketing Status

Active

Package

MSOP/TSSOP 8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6905SYEDS6F

Package:

MSOP/TSSOP 8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MSOP/TSSOP 8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6905TGEDS6F

Package:

MSOP/TSSOP 8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MSOP/TSSOP 8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6905TWEDS6F

Package:

MSOP/TSSOP 8

Material Declaration**:

Marketing Status

Active

Package

MSOP/TSSOP 8

Grade

Industrial

RoHS Compliance Grade

Ecopack3

STM6905TZEDS6F

Package:

MSOP/TSSOP 8

Material Declaration**:

PDF XML

Marketing Status

Active

Package

MSOP/TSSOP 8

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.

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STM6905SYEDS6F Available at 1 distributors

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EAR99 NEC Tape And Reel MSOP/TSSOP 8 -40 85 - 0.7 / 1k
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STM6905TGEDS6F Available at 4 distributors

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EAR99 NEC Tape And Reel MSOP/TSSOP 8 -40 85 - 0.7 / 1k
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Voltage Reset 2 (V) (typ):

-

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0.7

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STM6905TWEDS6F Available at 1 distributors

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EAR99 NEC Tape And Reel MSOP/TSSOP 8 -40 85 - 0.7 / 1k
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-

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STM6905PWEDS6F Available at 2 distributors

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EAR99 NEC Tape And Reel MSOP/TSSOP 8 -40 85 - 0.7 / 1k
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Voltage Reset 2 (V) (typ):

-

Unit Price (US$):

0.7

Country of Origin:

MALAYSIA

STM6905TZEDS6F Available at 2 distributors

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DIGIKEY WORLDWIDE 2075 1 Order Now
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EAR99 NEC Tape And Reel MSOP/TSSOP 8 -40 85 3.078 0.7 / 1k
MORE INFO

Voltage Reset 2 (V) (typ):

2.333

Unit Price (US$):

0.7

Country of Origin:

MALAYSIA

STM6905SYEDS6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.7 / 1k

Distributor availability ofSTM6905SYEDS6F

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MOUSER WORLDWIDE 3900 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

MOUSER

Stock

3900

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MSOP/TSSOP 8

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

-

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.7 / 1k

Country of Origin

MALAYSIA

STM6905SFEDS6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.7 / 1k

Distributor availability ofSTM6905SFEDS6F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 907 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

MOUSER

Stock

907

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MSOP/TSSOP 8

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

-

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.7 / 1k

Country of Origin

MALAYSIA

STM6905TGEDS6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.7 / 1k

Distributor availability ofSTM6905TGEDS6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 3205 1 Order Now
AVNET AMERICA 4000 0 Order Now
FUTURE WORLDWIDE 4000 4000 Order Now
MOUSER WORLDWIDE 2742 1 Order Now

Distributor reported inventory date: 2020-08-03

Distributor Name

DIGIKEY

Stock

3205

Min.Order

1

Region

WORLDWIDE Order Now

AVNET

Stock

4000

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

4000

Min.Order

4000

Region

WORLDWIDE Order Now

MOUSER

Stock

2742

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-03

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MSOP/TSSOP 8

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

-

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.7 / 1k

Country of Origin

MALAYSIA

STM6905TWEDS6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.7 / 1k

Distributor availability ofSTM6905TWEDS6F

Distributor Name
Region Stock Min. Order Third party link
MOUSER WORLDWIDE 3990 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

MOUSER

Stock

3990

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MSOP/TSSOP 8

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

-

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.7 / 1k

Country of Origin

MALAYSIA

STM6905PWEDS6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.7 / 1k

Distributor availability ofSTM6905PWEDS6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 1091 1 Order Now
MOUSER WORLDWIDE 2876 1 Order Now

Distributor reported inventory date: 2020-08-02

Distributor Name

DIGIKEY

Stock

1091

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2876

Min.Order

1

Region

WORLDWIDE Order Now

Distributor reported inventory date: 2020-08-02

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MSOP/TSSOP 8

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

-

Voltage Reset 2 (V) (typ)

-

Budgetary Price (US$)* / Qty

0.7 / 1k

Country of Origin

MALAYSIA

STM6905TZEDS6F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

0.7 / 1k

Distributor availability ofSTM6905TZEDS6F

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 2075 1 Order Now
Farnell Element14 EUROPE 4000 1 Order Now

Distributor reported inventory date: 2020-08-01

Distributor Name

DIGIKEY

Stock

2075

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

4000

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-08-01

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

MSOP/TSSOP 8

Operating Temperature (°C)

(min)

-40

(max)

85

Voltage Reset 1 (V) (typ)

3.078

Voltage Reset 2 (V) (typ)

2.333

Budgetary Price (US$)* / Qty

0.7 / 1k

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