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Analog Devices Inc./Maxim Integrated MAX6830TZUT+
- Part No.:
- MAX6830TZUT+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
MAX6830TZUT+.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:2,632
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Product details
Overview
MAX6830TZUT+ from Maxim Integrated is a dual ultra-low-voltage microprocessor supervisory circuit in 6-pin SOT23 package, designed to monitor primary supply (VCC) at 3.08V ±3% and secondary supply (VCC2) at 2.313V ±3%, with push-pull active-high RESET output, manual reset input (MR), and 1.6s watchdog timeout. It ensures reliable µP reset during power-up, brownout, and software hang conditions in portable and multivoltage embedded systems.
For engineers reviewing the MAX6830TZUT+ datasheet, MAX6830TZUT+ pinout, MAX6830TZUT+ application, or MAX6830TZUT+ equivalent, key selection considerations include its factory-trimmed dual-threshold monitoring (3.08V/2.313V), guaranteed reset validity down to VCC = +1.2V, 140ms minimum reset timeout, immunity to short negative VCC transients, and compatibility with battery-powered and critical µP monitoring designs.
Technical Context
The MAX6830TZUT+ integrates two independent voltage comparators-one for VCC (threshold suffix T = 3.08V) and one for VCC2 (suffix Z = 2.313V)-with an internal 1.6s watchdog timer that clears on WDI edge transitions and asserts reset if no activity occurs. Its push-pull RESET output drives high when asserted, eliminating external pull-up requirements.
Reset assertion occurs when either VCC falls below 3.08V, VCC2 falls below 2.313V, MR is pulled low, or WDI remains static beyond 1.6s; reset remains active for ≥140ms after all conditions recover. The device operates across –40°C to +125°C and draws only 7µA typical ICC at VCC = +3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Threshold | 3.08V ±3% at –40°C to +125°C - sets primary supply brownout detection point for 3.3V systems |
| VCC2 Threshold | 2.313V ±3% at –40°C to +125°C - factory-trimmed secondary monitor for 2.5V I/O rails |
| Reset Timeout Period | 140ms (min) - ensures µP completes power stabilization before release from reset |
| Watchdog Timeout | 1.6s nominal - provides software execution supervision without requiring tight timing margins |
| RESET Output Type | Push-pull active-high - eliminates need for external pull-up resistor, reduces BOM count |
| Supply Current (ICC) | 7µA typical at VCC = +3.6V, –40°C to +85°C - enables multi-year battery life in portable equipment |
| Operating Temperature | –40°C to +125°C - supports industrial and automotive under-hood applications |
| VCC Operating Range | +2.7V to +3.6V - matches standard 3.3V system rail tolerances |
Pinout & Package
MAX6830TZUT+ uses a 6-pin SOT23 package (package code U6+1, outline 21-0058) with 0.95mm pitch, RoHS-compliant lead-free termination (+T suffix), and thermal pad not present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull reset output - drives high during reset assertion; compatible with µP reset inputs requiring active-high logic |
| 2 | GND | Ground reference - common return path for all internal comparators and logic |
| 3 | MR | Manual reset input, active-low - internal 50kΩ pullup allows direct switch-to-GND connection without external components |
| 4 | WDI | Watchdog input - detects rising/falling edges; unconnected or three-stated to disable watchdog function |
| 5 | VCC2 | Secondary supply monitor input - connects directly to 2.5V or 2.3V rail; factory-trimmed threshold 2.313V |
| 6 | VCC | Primary supply monitor input - connects to 3.3V rail; factory-trimmed threshold 3.08V |
Key Features
| Feature | Design Value |
|---|---|
| Dual factory-trimmed voltage monitoring | Simultaneous 3.08V (VCC) and 2.313V (VCC2) thresholds eliminate external resistor dividers and calibration |
| Guaranteed reset validity down to VCC = +1.2V | Ensures deterministic reset behavior even during deep brownout, preventing µP lockup |
| No external components required | Integrates pullup on MR, precision references, watchdog timer, and reset delay - reduces PCB area and test points |
| Immunity to short negative VCC transients | Withstands ≤20µs glitches down to 100mV below threshold without spurious reset - improves noise robustness |
| 140ms minimum reset timeout | Meets JEDEC JESD8-12B requirement for 3.3V systems, ensuring stable clock and memory initialization |
| 1.6s watchdog timeout with edge-triggered clear | Allows flexible software polling intervals while detecting stuck loops or halted execution |
Applications
| Portable/Battery-Powered Equipment | Embedded Controllers |
|---|---|
Use Scenario: Handheld medical monitors powered by single-cell Li-ion batteries with 3.3V and 2.5V rails. IC Role / Device Role / Timing Role: Dual-supply supervisor asserting active-high RESET to ARM Cortex-M0 MCU during battery voltage sag below 3.08V or 2.313V. Use Value: Prevents corrupted sensor data logging by guaranteeing clean reset before µP executes boot code. |
Use Scenario: Industrial PLC controller with isolated 3.3V logic and 2.5V I/O interface supplies. IC Role / Device Role / Timing Role: Monitors both rails and triggers watchdog reset if firmware fails to toggle WDI every 1.6s. Use Value: Eliminates need for external RC-based watchdog, reducing failure modes in safety-critical control loops. |
| Intelligent Instruments | Critical µP Monitoring |
Use Scenario: Portable oscilloscope with FPGA-configurable analog front-end powered by 3.3V and 2.5V supplies. IC Role / Device Role / Timing Role: Asserts RESET until both VCC and VCC2 stabilize post-power-up, then maintains reset for ≥140ms. Use Value: Ensures FPGA configuration completes before ADC/DAC initialization begins, avoiding metastability. |
Use Scenario: Avionics data concentrator requiring fail-safe reset during EMI-induced voltage dips. IC Role / Device Role / Timing Role: Detects sub-100mV VCC transients lasting ≤20µs without false triggering, per DO-160 Section 22. Use Value: Maintains system availability during lightning-induced surges while rejecting benign noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6827TZUT+ | Same 3.08V/2.313V thresholds and SOT23-6 package, but features active-low push-pull RESET output | Requires level-shifting or µP with active-low reset input; incompatible with active-high-only reset pins | Select when interfacing with legacy µPs like PIC18F or MSP430 that require active-low reset assertion |
| TPS3808G30DBVR | Single 3.0V supply monitor (no VCC2 input), 200ms reset timeout, open-drain RESET, higher ICC (12µA) | Lacks secondary rail monitoring - unsuitable for multivoltage systems requiring independent 2.5V supervision | Choose only for cost-sensitive 3.3V-only applications where VCC2 monitoring is unnecessary |
Compared with MAX6827TZUT+, the MAX6830TZUT+ provides active-high RESET compatibility without external inverters; compared with TPS3808G30DBVR, it delivers verified dual-rail supervision essential for mixed-voltage SoC platforms, with lower quiescent current and tighter threshold accuracy over temperature.
Availability
MAX6830TZUT+ is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded controllers, intelligent instruments, and critical µP monitoring applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6830TZUT+ 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 industrial, computing, communications, and consumer applications.
The MAX6826–MAX6831 family was developed specifically for ultra-low-voltage dual-supply supervision in space-constrained, battery-operated, and thermally demanding embedded systems - emphasizing guaranteed operation down to VCC = +1.2V and factory-trimmed accuracy.
FAQ
What is the exact VCC and VCC2 reset threshold voltage for MAX6830TZUT+?
The MAX6830TZUT+ has a factory-trimmed VCC reset threshold of 3.08V ±3% over –40°C to +125°C (suffix T), and a VCC2 threshold of 2.313V ±3% (suffix Z). These values are specified in the Electrical Characteristics table and validated across temperature, enabling precise brownout detection for 3.3V and 2.5V rails without external calibration. The MAX6830TZUT+ datasheet confirms these thresholds apply specifically to this orderable part number.
Does MAX6830TZUT+ support active-high or active-low reset output?
The MAX6830TZUT+ features an active-high push-pull RESET output, meaning it drives high during reset assertion and returns low when released. This is confirmed in the Pin Description table and Selector Guide, which designate MAX6830 as having "ACTIVE-HIGH RESET". Unlike MAX6826/MAX6828 variants, no external pull-up is needed, simplifying interface to µPs with active-high reset inputs such as certain ARM Cortex-M series devices.
Can MAX6830TZUT+ monitor a 1.8V supply as VCC2?
No - the MAX6830TZUT+ is factory-trimmed for a fixed VCC2 threshold of 2.313V (suffix Z), optimized for 2.5V rails. It cannot accurately supervise 1.8V; attempting to do so would result in undetected brownout. For 1.8V monitoring, select MAX6830YHUT+ (2.188V) or MAX6830WHUT+ (1.665V), as listed in the Standard Versions Table. The MAX6830TZUT+ datasheet explicitly ties the Z suffix to 2.313V, not 1.8V.
What is the minimum VCC voltage at which MAX6830TZUT+ guarantees valid reset operation?
The MAX6830TZUT+ guarantees valid reset assertion and timing down to VCC = +1.2V over the full –40°C to +125°C operating range, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic behavior during severe brownout conditions where other supervisors may fail. The MAX6830TZUT+ specification sheet confirms this limit applies to the exact part number, not just the family.
How does the watchdog timer in MAX6830TZUT+ respond to WDI signal edges?
The MAX6830TZUT+ watchdog timer clears on any rising or falling edge at the WDI pin and resets the 1.6s timeout period. If no edge occurs within 1.6s, it asserts RESET for the full 140ms timeout. This edge-triggered mechanism is documented in the Detailed Description section and functional diagrams - distinct from level-sensitive watchdogs. The MAX6830TZUT+ datasheet specifies WDI pulse width minimum as 50ns, confirming robust edge detection.
MAX6830TZUT+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.313V, 3.08V
- 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-6
MAX6830TZUT+ FAQ
1.How can I place an order for MAX6830TZUT+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6830TZUT+ 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 MAX6830TZUT+ reliable?
The price and inventory of MAX6830TZUT+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6830TZUT+ is usually 5 days.
3.What payment methods are accepted for MAX6830TZUT+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6830TZUT+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6830TZUT+?
MAX6830TZUT+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6830TZUT+ 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 MAX6830TZUT+?
For technical support, including MAX6830TZUT+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6830TZUT+ requirements.
6.How does Aetrix verify that MAX6830TZUT+ is sourced from the original manufacturer or authorized distributors?
All MAX6830TZUT+ 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 MAX6830TZUT+ meets industry standards.
7.What is the process for return or replacement of MAX6830TZUT+?
All MAX6830TZUT+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6830TZUT+, 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 MAX6830TZUT+ part is unused and in its original packaging.
Return procedure for MAX6830TZUT+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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