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Analog Devices Inc./Maxim Integrated MAX6831YGUT+T
- Part No.:
- MAX6831YGUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6831YGUT+T.pdf
- Description:
- IC MPU SUPERVISOR SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,749
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Product details
Overview
MAX6831YGUT+T from Maxim Integrated is an ultra-low-voltage dual microprocessor supervisory IC in 6-pin SOT23 package, designed to monitor primary supply (VCC) at +2.12V–+2.25V and secondary supply (VCC2) at +2.19V with factory-trimmed thresholds, assert open-drain active-low RESET, and provide manual reset and 1.6s watchdog timeout - used in battery-powered embedded controllers requiring reliable brownout detection and system-level fault recovery.
For engineers reviewing the MAX6831YGUT+T datasheet, MAX6831YGUT+T pinout, MAX6831YGUT+T application, or MAX6831YGUT+T equivalent, this page delivers verified electrical parameters, exact pin functions, real-world use cases for multivoltage systems, and validated alternative parts with documented functional differences - all confirmed against Maxim's official 19-1867 Rev 3 datasheet.
Technical Context
The MAX6831YGUT+T integrates two independent voltage monitors: a primary VCC detector with Y-suffix threshold (2.12V–2.25V) and a secondary VCC2 detector with G-suffix threshold (2.188V typ at -40°C to +125°C), both feeding into a shared reset logic block that asserts open-drain RESET after 140ms minimum timeout. Its watchdog timer clears on any WDI edge and triggers reset if no transition occurs within 1.12–2.60s across temperature.
It features internal 50kΩ MR pullup, high-impedance RESET IN input disabled in MAX6831 (no user-adjustable second monitor), and guaranteed reset assertion down to VCC = +1.2V - enabling operation during deep brownout conditions where other supervisors fail. All timing and threshold specs are production-tested over -40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 2.12V–2.25V (Y-suffix, -40°C to +125°C); enables precise monitoring of +2.2V I/O rails in portable systems |
| VCC2 Threshold | 2.188V (G-suffix, typ), factory-trimmed; eliminates external resistor divider for secondary supply supervision |
| Reset Timeout | 140ms min (100–320ms over temp); ensures µP completes power stabilization before release |
| Watchdog Period | 1.12–2.60s (-40°C to +125°C); provides robust software execution monitoring without external RC timing |
| RESET Type | Open-drain active-low; allows wired-OR with other reset sources and direct interface to bidirectional µP reset pins |
| Supply Current | 25µA max at VCC = +3.6V, -40°C to +125°C; supports multi-year battery life in always-on monitoring |
| Operating Temp | -40°C to +125°C; qualified for automotive under-hood and industrial control environments |
Pinout & Package
Package: 6-pin SOT23 (U6+1 outline, land pattern 90-0175), RoHS-compliant lead-free (+T suffix), 1.6mm × 2.9mm footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; requires external pullup; sinks ≥100µA at VCC ≥1.2V |
| 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 with 50kΩ; 1µs minimum pulse width |
| 4 | WDI | Watchdog input; toggling required every ≤1.12s at -40°C to prevent timeout; 50ns glitch rejection |
| 5 | VCC2 | Secondary supply input; factory-trimmed comparator threshold at 2.188V (G-suffix); no external components needed |
| 6 | VCC | Primary supply input; monitored at Y-threshold (2.12–2.25V); powers internal circuitry and sets MR/WDI logic levels |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed voltage monitoring | Eliminates calibration resistors for both VCC (Y) and VCC2 (G), reducing BOM count and layout area in space-constrained designs |
| Open-drain RESET with 1µA leakage | Enables direct connection to bidirectional µP reset pins (e.g., Motorola 68HC11) using single pullup resistor - no level-shifting required |
| Guaranteed operation down to VCC = +1.2V | Ensures valid reset assertion during severe brownout events where VCC drops below 1.8V, preventing undefined µP states |
| 1.6s nominal watchdog timeout | Provides sufficient margin for slow-starting peripherals while detecting hung firmware loops faster than typical 2–5s alternatives |
| Immunity to 20µs negative VCC transients | Rejects common PCB noise spikes without false resets, eliminating need for additional input filtering capacitors |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Wearable health monitor powered by single Li-ion cell with dual-rail PMIC (2.2V I/O, 1.8V core). IC Role / Device Role / Timing Role: Supervises both rails simultaneously; asserts RESET if either drops below threshold during discharge or load surge. Use Value: Prevents data corruption during battery sag by holding µP in reset until stable voltages return - extends usable runtime per charge cycle. |
Use Scenario: Industrial PLC module with ARM Cortex-M4, requiring deterministic startup and runtime fault recovery. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and isolated 2.2V communication rail; feeds watchdog from UART TX line. Use Value: Guarantees safe boot sequence and detects firmware lockups in field-deployed units without host intervention. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Handheld multimeter with segmented LCD and precision ADC, operating from coin-cell battery. IC Role / Device Role / Timing Role: Primary supervisor for 2.2V display driver rail and secondary for 1.8V analog front-end; uses MR for user-initiated self-test reset. Use Value: Ensures measurement accuracy by blocking µP execution until all analog references settle - eliminates offset drift on power-up. |
Use Scenario: Medical infusion pump controller where µP failure could cause hazardous over-delivery. IC Role / Device Role / Timing Role: Dual-supply monitoring of safety-critical 2.2V logic and 1.8V motor driver rails; watchdog fed from heartbeat timer interrupt. Use Value: Meets IEC 62304 Class C requirements by guaranteeing reset assertion within 140ms of undervoltage - prevents unsafe state transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6830YGUT+T | Push-pull active-high RESET output; identical VCC/VCC2 thresholds and watchdog timing | Requires redesign of reset net termination; incompatible with bidirectional µP reset pins | Select when system needs active-high reset signaling and no wired-OR capability is required |
| TPS3808G18DBVR | Single-supply monitor (1.8V threshold only); no VCC2 input or watchdog; 200ms fixed timeout | Cannot replace dual-monitor function without adding discrete circuitry for second rail | Consider only for cost-sensitive single-rail applications where VCC2 supervision is omitted |
Compared with MAX6830YGUT+T, the MAX6831YGUT+T enables direct interfacing to bidirectional reset pins without external components; versus TPS3808G18DBVR, it delivers full dual-supply supervision and watchdog functionality in the same 6-pin footprint - critical for space-constrained safety-critical designs.
Availability
MAX6831YGUT+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, and intelligent instruments requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6831YGUT+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6826–MAX6831 family was designed specifically for ultra-low-voltage dual-rail microprocessor supervision in space- and power-constrained systems - emphasizing guaranteed operation down to 1.2V, factory-trimmed thresholds, and integrated watchdog functionality without external timing components.
FAQ
What is the exact VCC2 reset threshold voltage for MAX6831YGUT+T?
The MAX6831YGUT+T has a factory-trimmed VCC2 threshold specified as 2.188V (typical) at -40°C to +85°C and 2.188V (typical) at -40°C to +125°C, corresponding to the G-suffix in the Standard Versions Table. This value is production-tested and does not require external calibration - unlike adjustable-input variants such as MAX6826.
Does MAX6831YGUT+T support user-adjustable RESET IN monitoring?
No, the MAX6831YGUT+T does not support user-adjustable RESET IN monitoring. Pin 5 is dedicated to factory-trimmed VCC2 monitoring (G-suffix), and the RESET IN function is disabled in this variant. The MAX6826/MAX6827/MAX6828 series provide the adjustable input; MAX6831YGUT+T relies solely on its two fixed thresholds.
What is the maximum allowable VCC transient duration before MAX6831YGUT+T asserts reset?
Per Figure MAX6826 toc06, the MAX6831YGUT+T tolerates negative VCC transients up to 20µs in duration when the overdrive (VTH – VCC) is 100mV - meaning a drop from 2.25V to 2.15V lasting ≤20µs will not trigger reset. This immunity is built-in and requires no external filtering components.
Can MAX6831YGUT+T operate with VCC below 1.8V?
Yes, the MAX6831YGUT+T is guaranteed to assert valid reset down to VCC = +1.2V over the full -40°C to +125°C range, and functional operation is ensured down to +1.0V per Absolute Maximum Ratings. This enables reliable supervision in deep brownout scenarios where competing supervisors lose reset validity.
What is the watchdog timeout variation across temperature for MAX6831YGUT+T?
The watchdog timeout for MAX6831YGUT+T varies from 1.12s (min) at -40°C to 2.60s (max) at +125°C, with 1.6s nominal at +25°C. This range is fully characterized and production-tested - not derived from typical curves - ensuring predictable fault-detection timing across automotive and industrial operating conditions.
MAX6831YGUT+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:
- 1.11V, 2.19V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-6
MAX6831YGUT+T FAQ
1.How can I place an order for MAX6831YGUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6831YGUT+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 MAX6831YGUT+T reliable?
The price and inventory of MAX6831YGUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6831YGUT+T is usually 5 days.
3.What payment methods are accepted for MAX6831YGUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6831YGUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6831YGUT+T?
MAX6831YGUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6831YGUT+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 MAX6831YGUT+T?
For technical support, including MAX6831YGUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6831YGUT+T requirements.
6.How does Aetrix verify that MAX6831YGUT+T is sourced from the original manufacturer or authorized distributors?
All MAX6831YGUT+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 MAX6831YGUT+T meets industry standards.
7.What is the process for return or replacement of MAX6831YGUT+T?
All MAX6831YGUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6831YGUT+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 MAX6831YGUT+T part is unused and in its original packaging.
Return procedure for MAX6831YGUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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