Product overview
Description
The STM6904 supervisor is a low voltage/low supply current processor supervisor, designed to monitor up to four 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 four supply monitors (VCCand V2IN) have fixed (customer-selectable, factory-trimmed) thresholds (VRST1and VRST2). The other two voltage monitor inputs (V3IN and V4IN) are monitored using externally adjustable threshold (0.600 V internal reference) to meet specific level requirements.
If any of the four 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, RST is maintained low for a minimum delay period (tREC) after ALL monitored supplies rise above their respective thresholds and MR returns to high. This device is in the correct reset output logic state when VCCgreater than 0.8 V.
The STM6904 is available in a standard 8-lead MSOP (TSSOP) package.
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All features
- Quad voltage monitoring
- Accurate ±1.8% across temperature voltage threshold (±1% at 25 °C)
- Primary supply (VCC) monitor. Fixed (factory -programmed) reset thresholds: 3.078 to 2.188 V
- Second fixed (V2IN) monitor. Fixed (factory-programmed) reset thresholds: 2.333 to 1.110 V
- Two additional adjustable supply monitor inputs (externally adjustable)
- 0.6 V internal reference
- RSToutput (open drain)
- Output guaranteed for VCC ≥ 0.8 V
- Reset delay time (tREC) pin selectable
- Manual reset input (MR)
- Low supply current of 12 μA (typ)
- Power supply voltage 0.8 to 5.5 V
- RoHS compliant (green package)
- 8-pin MSOP/TSSOP
- Operating temperature: –40 to 85 °C (industrial grade)
Circuit Diagram
EDA Symbols, Footprints and 3D Models
STMicroelectronics - STM6904
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| STM6904PWEDS6F | Active | MiniSO-8 | Industrial | Ecopack3 | |
| STM6904SFEDS6F | Active | MiniSO-8 | Industrial | Ecopack3 | |
| STM6904SYEDS6F | Active | MiniSO-8 | Industrial | Ecopack3 | |
| STM6904TGEDS6F | Active | MiniSO-8 | Industrial | Ecopack3 | |
| STM6904TWEDS6F | Active | MiniSO-8 | Industrial | Ecopack3 | |
| STM6904TZEDS6F | Active | MiniSO-8 | Industrial | Ecopack3 |
STM6904PWEDS6F
Package:
MiniSO-8Material Declaration**:
STM6904SYEDS6F
Package:
MiniSO-8Material Declaration**:
(**) 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.
Sample & Buy
| Part Number | Marketing Status | Budgetary Price (US$)*/Qty | Order from ST | Order from distributors | Package | Packing Type | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating temperature (°C) | Operating Temperature (°C) (max) | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||||
| STM6904PWEDS6F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM6904TWEDS6F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM6904TGEDS6F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM6904TZEDS6F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM6904SYEDS6F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
| STM6904SFEDS6F | | | distributors No availability of distributors reported, please contact our sales office | |||||||||||
STM6904PWEDS6F Active
STM6904TWEDS6F Active
STM6904TGEDS6F Active
STM6904TZEDS6F Active
STM6904SYEDS6F Active
STM6904SFEDS6F Active
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors