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Analog Devices Inc./Maxim Integrated MAX6830WIUT-T
- Part No.:
- MAX6830WIUT-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6830WIUT-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6830WIUT-T from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory IC in 6-pin SOT23 package, monitoring primary supply (VCC) at 3.08V ±0.07V and secondary supply (VCC2) at 1.665V ±0.05V over -40°C to +125°C, with push-pull active-high RESET output, manual reset input (MR), and 1.6s watchdog timeout - used for reliable power-on reset and brownout protection in battery-powered embedded controllers.
For engineers reviewing the MAX6830WIUT-T datasheet, MAX6830WIUT-T pinout, MAX6830WIUT-T application, or MAX6830WIUT-T equivalent, this page delivers verified functional identity, exact threshold voltages, reset timing behavior, watchdog interaction logic, and validated alternative options for multivoltage system supervision.
Technical Context
The MAX6830WIUT-T implements dual independent voltage monitoring: VCC threshold is factory-trimmed to 3.08V (T-suffix), VCC2 threshold to 1.665V (W-suffix), both with 60ppm/°C temperature coefficient and guaranteed operation down to VCC = +1.2V. It features an internal 1.6s watchdog timer cleared on WDI edge transitions and a 140ms minimum reset timeout period after all monitored conditions recover.
Its push-pull RESET output asserts high during fault conditions (VCC/VCC2 undervoltage, MR low, or watchdog timeout), remains asserted for ≥140ms post-recovery, and drives high to ≥0.8×VCC at 200µA load. The MR input includes a 50kΩ internal pullup and supports CMOS-level triggering with 1µs minimum pulse width and 100ns glitch rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 3.08V ±0.07V at -40°C to +125°C - sets primary supply brownout detection point for 3.3V systems |
| VCC2 Threshold | 1.665V ±0.05V at -40°C to +125°C - factory-trimmed secondary monitor for core voltage in low-power SoCs |
| Reset Timeout Period | 140ms (min) - ensures µP completes full initialization before release from reset |
| Watchdog Timeout | 1.6s nominal (0.8–2.6s over temp) - provides fail-safe recovery window for firmware hangs |
| Operating Voltage Range | +1.2V to +5.5V on VCC - guarantees valid reset assertion even during deep brownout |
| RESET Output Type | Push-pull active-high - eliminates external pullup, directly interfaces with µP reset inputs requiring high-active assertion |
| Supply Current | 25µA max at -40°C to +125°C (VCC = +3.6V) - enables multi-year battery life in portable instrumentation |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant, rated for -40°C to +125°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output - drives high during fault; no external pullup required |
| 2 | GND | Ground reference for all internal comparators and logic - must be low-impedance connection |
| 3 | MR | Manual reset input, active-low - internally pulled up to VCC; momentary GND short forces reset |
| 4 | WDI | Watchdog input - toggling within 1.6s prevents reset; unconnected disables watchdog |
| 5 | VCC2 | Secondary supply input - connects directly to monitored core rail (e.g., 1.6V–1.8V domain) |
| 6 | VCC | Primary supply input - powers device and monitors main I/O rail (e.g., 3.3V domain) |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneously supervises VCC (3.08V) and VCC2 (1.665V) with separate thresholds and hysteresis |
| Guaranteed reset validity down to VCC = +1.2V | Ensures deterministic reset assertion even during severe brownout - critical for automotive and industrial cold-cranking |
| 140ms min reset timeout with temperature compensation | Prevents premature µP release before power rails stabilize across full operating temperature range |
| Immunity to short negative VCC transients | Withstands ≤20µs, 100mV VCC glitches without spurious reset - eliminates need for external filtering |
| No external components required | Integrates pullup on MR, precision references, watchdog timer, and reset delay generator - reduces BOM count by 5+ passives |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
|
Use Scenario: Long-life handheld medical sensor with dual-rail power (3.3V I/O, 1.65V core). IC Role / Device Role / Timing Role: Supervises both rails, asserts active-high RESET during startup/brownout, holds reset ≥140ms until stable. Use Value: Prevents firmware crash from partial power-up; extends battery life via 25µA quiescent current. |
Use Scenario: Industrial PLC controller with 3.3V FPGA and 1.6V ARM Cortex-M core. IC Role / Device Role / Timing Role: Monitors VCC (3.08V) and VCC2 (1.665V); triggers reset if either rail dips below threshold. Use Value: Eliminates need for two discrete supervisors; ensures synchronized reset across heterogeneous logic domains. |
| Intelligent Instruments | Critical µP Monitoring |
|
Use Scenario: Portable oscilloscope with battery backup and analog front-end powered from 1.6V LDO. IC Role / Device Role / Timing Role: Uses VCC2 pin to supervise 1.6V analog supply; asserts RESET if analog rail collapses before digital. Use Value: Prevents corrupted ADC readings or DAC output glitches during analog power failure. |
Use Scenario: Automotive body control module requiring ASIL-B–compatible power monitoring. IC Role / Device Role / Timing Role: Provides watchdog timeout (1.6s) and manual reset (MR) for firmware recovery under EMI stress. Use Value: Meets ISO 26262 diagnostic coverage requirements for power-supply fault detection without external circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply microprocessor supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6827WIUT-T | Same VCC/VCC2 thresholds (3.08V/1.665V) but active-low push-pull RESET output | Requires µP with active-low reset input; incompatible with high-active reset logic without level-shifting | Select when target µP accepts active-low reset and board layout cannot accommodate pullup resistor |
| MAX6831WIUT-T | Same VCC/VCC2 thresholds but open-drain RESET output instead of push-pull | Enables wired-OR reset bus sharing; requires external pullup resistor and supports bidirectional µP reset pins | Select when interfacing with Motorola 68HC11 or other µPs with bidirectional reset I/O |
Compared with MAX6830WIUT-T, MAX6827WIUT-T offers identical supervision accuracy but inverted reset polarity, while MAX6831WIUT-T trades push-pull drive strength for bus-sharing flexibility - choice depends strictly on µP reset input architecture and system-level reset signaling requirements.
Availability
MAX6830WIUT-T is available at Aetrix Electronics and suitable for portable instrumentation, embedded controllers, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6830WIUT-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6826–MAX6831 family was engineered specifically for dual-rail microprocessor supervision in space-constrained, battery-sensitive systems - delivering factory-trimmed thresholds, integrated watchdog, and guaranteed operation down to 1.2V VCC.
FAQ
What is the exact VCC reset threshold voltage for MAX6830WIUT-T?
The MAX6830WIUT-T has a factory-trimmed VCC reset threshold of 3.08V, with tolerance of ±0.07V over the full -40°C to +125°C operating temperature range. This value is specified in the Electrical Characteristics table under "VCC Reset Threshold (VTH)" for the T-suffix variant and is guaranteed by production testing - not a typical or design-center value.
Does MAX6830WIUT-T support monitoring a 1.6V core supply?
Yes. The MAX6830WIUT-T includes a dedicated VCC2 pin with a factory-trimmed threshold of 1.665V ±0.05V, optimized for monitoring low-voltage core supplies such as 1.6V–1.8V domains in modern microcontrollers and SoCs. This threshold is confirmed in the "VCC2 Reset Threshold" section of the datasheet for the W-suffix variant.
What is the function of the RESET pin on MAX6830WIUT-T?
The RESET pin on MAX6830WIUT-T is an active-high push-pull output. It drives high when VCC falls below 3.08V, VCC2 falls below 1.665V, MR is pulled low, or the watchdog times out. It remains high for ≥140ms after all fault conditions clear, then returns low. No external pullup is needed due to its push-pull structure.
Can MAX6830WIUT-T operate with VCC as low as 1.0V?
No - the MAX6830WIUT-T is guaranteed to operate correctly down to VCC = +1.2V over -40°C to +125°C, per the Absolute Maximum Ratings and Electrical Characteristics tables. While some variants in the MAX6826–MAX6831 family (e.g., MAX6826/MAX6827/MAX6828) guarantee reset validity down to +1.0V, the MAX6830WIUT-T specification explicitly states +1.2V minimum.
How does the watchdog timer behave on MAX6830WIUT-T?
The MAX6830WIUT-T watchdog timer has a nominal timeout of 1.6s (0.8–2.6s over temperature). It clears on any rising or falling edge at the WDI pin and asserts RESET if no edge occurs within the timeout window. When WDI is left unconnected, the internal driver disables the watchdog by pulsing every ~1.4s - making it safe for use without software intervention.
MAX6830WIUT-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.388V, 1.67V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MAX6830WIUT-T FAQ
1.How can I place an order for MAX6830WIUT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6830WIUT-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX6830WIUT-T reliable?
The price and inventory of MAX6830WIUT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6830WIUT-T is usually 5 days.
3.What payment methods are accepted for MAX6830WIUT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6830WIUT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6830WIUT-T?
MAX6830WIUT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6830WIUT-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX6830WIUT-T?
For technical support, including MAX6830WIUT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6830WIUT-T requirements.
6.How does Aetrix verify that MAX6830WIUT-T is sourced from the original manufacturer or authorized distributors?
All MAX6830WIUT-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX6830WIUT-T meets industry standards.
7.What is the process for return or replacement of MAX6830WIUT-T?
All MAX6830WIUT-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6830WIUT-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX6830WIUT-T part is unused and in its original packaging.
Return procedure for MAX6830WIUT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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