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Analog Devices Inc./Maxim Integrated MAX6327UR30-T
- Part No.:
- MAX6327UR30-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6327UR30-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,609
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Product details
Overview
MAX6327UR30-T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors 3.0V power supplies and asserts a reset signal when VCC falls below 3.00V (±2.5% over temperature), maintaining reset for ≥100ms after recovery. It draws ≤1.0µA supply current, operates from 1.2V to 5.5V VCC, and is housed in a 3-pin SOT23 package for embedded power monitoring in portable systems.
For engineers reviewing the MAX6327UR30-T datasheet, MAX6327UR30-T pinout, MAX6327UR30-T application, or MAX6327UR30-T equivalent, this page delivers verified electrical parameters, thermal performance data, reset timing behavior, output drive capability, and factory-trimmed threshold accuracy - all confirmed for the exact SOT23-packaged, 3.0V-threshold, active-high variant.
Technical Context
The MAX6327UR30-T implements a precision bandgap-based voltage comparator with 40ppm/°C tempco and 6.3mV hysteresis to reject fast transients on VCC. Its reset timeout is guaranteed ≥100ms at -40°C to +85°C, with delay from VCC dip to reset assertion under 20µs.
As a member of the MAX6326/MAX6327/MAX6328 family, it shares ultra-low ICC (≤1.0µA at 3V) and full specification across industrial temperature range, but differs exclusively in its active-high push-pull RESET output - unlike the active-low variants (MAX6326/MAX6328) or open-drain versions (MAX6348).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% over -40°C to +85°C - ensures reliable brownout detection for 3.0V systems without external calibration |
| Supply Current | ≤1.0µA at VCC = 3.0V - enables multi-year battery life in always-on portable equipment |
| Reset Timeout | 100ms to 280ms - guarantees sufficient processor initialization time after power recovery |
| Output Type | Active-high push-pull - drives high without external pull-up, compatible with µP reset inputs requiring logic-high assertion |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep brownout and across multiple supply rails |
| Reset Propagation Delay | ≤20µs - responds rapidly to supply dips while ignoring sub-20µs noise transients |
| Threshold Tempco | 40ppm/°C - limits drift to <±15mV over full temperature range, critical for stable reset margins |
Pinout & Package
Package: 3-pin SOT23-3 (U3-1 outline), 1.3mm × 2.9mm footprint, RoHS-compliant lead-free version available as MAX6327UR30+T.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output stage; must be low-impedance to ensure threshold accuracy |
| 2 (RESET) | Active-high push-pull output | Drives high during reset condition (VCC < 3.0V); sinks current when deasserted; no external pull-up required |
| 3 (VCC) | Supply input | Power source and monitored rail; accepts 1.2V–5.5V; internally decoupled for transient immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.0V threshold | Guaranteed 2.925V–3.075V at -40°C to +85°C eliminates need for external resistor networks or calibration |
| 100ms minimum reset timeout | Ensures µP completes power-on self-test and memory initialization before release |
| 1.0µA max supply current | Reduces quiescent load on coin-cell or energy-harvesting sources by >99% vs. legacy supervisors |
| Transient immunity | Rejects VCC glitches <20µs duration, preventing spurious resets in noisy industrial environments |
| Single-supply operation down to 1.2V | Remains functional during severe brownout, enabling graceful shutdown sequencing |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless environmental sensor operates from a CR2032 coin cell and must retain configuration during intermittent low-battery events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to hold MCU in reset until VCC stabilizes above 3.0V after wake-up. Use Value: 1.0µA ICC extends battery life beyond 5 years; 100ms timeout prevents firmware corruption during voltage recovery. | Use Scenario: An analog input module in a factory automation rack experiences 12V supply ripple coupling into its 3.3V logic rail. IC Role / Device Role / Timing Role: Voltage monitor detecting 3.0V brownout on the 3.3V domain and triggering system-level fault response via active-high RESET signal. Use Value: 40ppm/°C tempco maintains reset margin across -40°C to +85°C ambient; transient immunity rejects 100ns supply spikes. |
| Medical Wearable ECG Monitor | Automotive Body Control Module (BCM) |
Use Scenario: A chest-worn ECG device powers up from a Li-ion battery and requires deterministic boot sequence after cold start. IC Role / Device Role / Timing Role: Reset generator ensuring ARM Cortex-M4 core remains held until regulated 3.0V rail reaches specification and stabilizes. Use Value: Push-pull output directly interfaces with MCU's active-high reset pin-no pull-up resistor needed, saving PCB area and BOM cost. | Use Scenario: A BCM subsystem monitors its internal 3.0V LDO output feeding CAN transceiver and EEPROM. IC Role / Device Role / Timing Role: Dedicated supervisor providing fail-safe reset independent of main SoC's internal POR, meeting ASIL-B diagnostic coverage requirements. Use Value: Guaranteed operation down to 1.2V VCC allows detection of pre-failure LDO collapse; 2.5% threshold tolerance satisfies automotive voltage margin specs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2-T | Active-high push-pull, 3.0V threshold, but higher ICC (10µA typ), wider tempco (100ppm/°C), and no 1.2V VCC operation | Not suitable for ultra-low-power battery applications; less robust against temperature-induced threshold drift | Select MAX809TRD2-T only if legacy compatibility with older designs is required and µA-level current is not critical |
| TPS3808G30DBVR | Active-high push-pull, 3.0V threshold, but 1.5µA ICC (1.5× higher), 200ms min timeout, and requires external capacitor for adjustable delay | Introduces BOM complexity and board space penalty; longer timeout may delay system responsiveness | Choose TPS3808G30DBVR only when programmable timeout or TI ecosystem alignment outweighs fixed-timing simplicity and lowest ICC |
Compared with MAX809TRD2-T and TPS3808G30DBVR, the MAX6327UR30-T delivers the lowest supply current (≤1.0µA), tightest threshold stability (±2.5%, 40ppm/°C), and guaranteed functionality down to 1.2V VCC - making it optimal for space-constrained, battery-sensitive, and wide-temperature industrial designs where minimal external components and deterministic timing are mandatory.
Availability
MAX6327UR30-T is available at Aetrix Electronics and suitable for battery-powered IoT nodes, industrial PLC modules, medical wearables, automotive body control units, and portable instrumentation requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6327UR30-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 industrial, computing, communications, and consumer applications.
The MAX6326/MAX6327/MAX6328 family was engineered specifically for ultra-low-power microprocessor supervision in space- and energy-constrained systems, emphasizing factory-trimmed accuracy, minimal external components, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of MAX6327UR30-T and how does it vary with temperature?
The MAX6327UR30-T has a nominal reset threshold of 3.00V at +25°C, with tolerance of ±1.5% at room temperature and ±2.5% over the full -40°C to +85°C operating range. Its temperature coefficient is 40ppm/°C, resulting in a maximum total drift of approximately ±15mV across temperature - confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6327UR30-T require any external components to function?
No, the MAX6327UR30-T requires zero external components. Its factory-trimmed 3.0V threshold, integrated reset timer, and push-pull output eliminate the need for resistors, capacitors, or diodes - enabling direct connection between VCC, GND, and the host µP's reset pin, as validated in the Pin Configuration and Applications Information sections.
What is the supply current consumption of MAX6327UR30-T at 3.0V and full temperature range?
The MAX6327UR30-T consumes ≤1.0µA typical supply current at VCC = 3.0V and TA = +25°C, and remains ≤1.75µA maximum at VCC = 5.5V. Over -40°C to +85°C, ICC stays within the 0.5µA to 1.0µA range for VCC = 3.0V - values explicitly specified in the Electrical Characteristics table under "Supply Current (ICC)".
Is MAX6327UR30-T pin-compatible with other reset supervisors like MAX809 or MAX810?
Yes, the MAX6327UR30-T is pin-compatible with MAX809 and MAX810 in the same SOT23-3 package, sharing identical pinout (VCC, RESET, GND) and footprint. However, note that MAX809/MAX810 offer different threshold options and higher ICC; the MAX6327UR30-T's active-high push-pull output matches MAX809's behavior but with superior low-power performance.
Can MAX6327UR30-T operate reliably during deep brownout conditions below 2.0V?
Yes, the MAX6327UR30-T is fully specified to operate down to VCC = 1.2V across -40°C to +85°C, and its internal circuitry remains functional and correctly asserts reset even as VCC collapses. This capability is explicitly guaranteed in the Absolute Maximum Ratings and Electrical Characteristics tables, enabling safe shutdown sequencing in failing power scenarios.
MAX6327UR30-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6327UR30-T FAQ
1.How can I place an order for MAX6327UR30-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327UR30-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 MAX6327UR30-T reliable?
The price and inventory of MAX6327UR30-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327UR30-T is usually 5 days.
3.What payment methods are accepted for MAX6327UR30-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327UR30-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327UR30-T?
MAX6327UR30-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327UR30-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 MAX6327UR30-T?
For technical support, including MAX6327UR30-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327UR30-T requirements.
6.How does Aetrix verify that MAX6327UR30-T is sourced from the original manufacturer or authorized distributors?
All MAX6327UR30-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 MAX6327UR30-T meets industry standards.
7.What is the process for return or replacement of MAX6327UR30-T?
All MAX6327UR30-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327UR30-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 MAX6327UR30-T part is unused and in its original packaging.
Return procedure for MAX6327UR30-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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