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Analog Devices Inc./Maxim Integrated MAX6315US30D2+T
- Part No.:
- MAX6315US30D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US30D2+T.pdf
- Description:
- IC RESET CIRCUIT 3.00V SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,802
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Product details
Overview
The MAX6315US30D2+T from Analog Devices is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain active-low RESET signal when voltage falls below 3.00V or when manual reset (MR) is asserted. It features a factory-trimmed 3.00V reset threshold, 20ms minimum reset timeout period, 5μA typical supply current at +25°C, and operates across -40°C to +125°C. It is used in battery-powered controllers and intelligent instruments requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6315US30D2+T datasheet, MAX6315US30D2+T pinout, MAX6315US30D2+T application, or MAX6315US30D2+T equivalent, this page delivers verified specifications, SOT23 package details, reset timing behavior, MR debounce capability, and alternatives for 3.0V system monitoring with 20ms timeout.
Technical Context
The MAX6315US30D2+T implements a precision voltage-monitoring comparator with factory-laser-trimmed resistive divider to set the 3.00V nominal reset threshold, with ±3.5% tolerance over -40°C to +125°C and 60ppm/°C tempco. Its internal one-shot timer ensures RESET remains asserted for ≥20ms after VCC rises above threshold or MR deasserts.
It uses an open-drain n-channel MOSFET output capable of sinking 3.2mA at VCC > 4.25V while allowing pullup to voltages up to +6.0V - enabling level-shifted reset signaling across mixed-supply systems. The MR input includes a 63kΩ internal pullup and rejects <100ns glitches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V nominal, ±3.5% over full temperature range - ensures deterministic reset activation for 3.0V logic domains. |
| Reset Timeout Period | 20ms minimum (–40°C to +125°C) - guarantees sufficient hold time for μP initialization before release. |
| Supply Current | 5μA typical at +25°C, ≤15μA max at +125°C - enables multi-year operation in coin-cell–powered devices. |
| Operating Voltage Range | 1.0V to 5.5V - supports monitoring of 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, and 5.0V rails without external biasing. |
| RESET Output Type | Open-drain, rated to sink 3.2mA at VCC > 4.25V - allows flexible pullup to higher-voltage domains (up to +6.0V). |
| MR Input Behavior | Logic-low active, 1μs minimum pulse width, internal 63kΩ pullup - eliminates need for external components in manual reset implementation. |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-environment embedded applications. |
Pinout & Package
MAX6315US30D2+T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and standard land pattern 90-0183.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance connection to system ground plane. |
| 2 (RESET) | Active-low open-drain output | Asserts logic-low during reset; requires external pullup resistor (e.g., 10kΩ) to defined voltage rail (≤+6.0V). |
| 3 (MR) | Manual reset input | Logic-low assertion forces immediate reset; internally pulled up to VCC (63kΩ); debounced by design - no external RC needed. |
| 4 (VCC) | Supply and monitor input | Power source and monitored rail; internal voltage divider samples this node to detect undervoltage conditions relative to 3.00V threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 3.00V ±3.5% over –40°C to +125°C - eliminates calibration effort and improves BOM consistency across production lots. |
| Guaranteed 20ms minimum reset timeout | Ensures μP reset pin remains asserted long enough for oscillator stabilization and register initialization in demanding embedded firmware. |
| Open-drain RESET with 6.0V absolute max rating | Enables direct interface to 5V or 3.3V reset inputs even when monitoring a lower VCC rail - simplifies multi-rail system design. |
| Immunity to short VCC transients | Rejects <100ns noise spikes and tolerates up to 100V/μs dV/dt - prevents spurious resets in electrically noisy environments. |
| Ultra-low quiescent current | 5μA typical at +25°C - extends battery life in portable instrumentation and IoT edge nodes without compromising supervision reliability. |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Programmable logic controller operating in factory-floor environments with fluctuating 3.3V supply due to motor switching noise. IC Role / Device Role / Timing Role: Monitors 3.3V VCC rail and asserts RESET if voltage dips below 3.00V; holds reset for ≥20ms to ensure clean μP restart after brownout. Use Value: Prevents corrupted ladder logic execution and I/O state mismatches caused by marginal supply conditions. |
Use Scenario: Remote environmental sensor node powered by CR2032 coin cell, sampling temperature every 10 minutes. IC Role / Device Role / Timing Role: Supervises 3.0V regulated rail; provides power-on reset and brownout detection while consuming only 5μA average current. Use Value: Enables >5-year battery lifetime while guaranteeing deterministic startup and recovery from low-battery sag events. |
| Automotive Body Control Module | Medical Point-of-Care Instrument |
Use Scenario: Under-dash BCM exposed to –40°C cold cranking and +125°C under-hood thermal cycling. IC Role / Device Role / Timing Role: Resets microcontroller on 3.0V domain during engine start-up voltage droop; operates reliably across full automotive temperature range. Use Value: Eliminates need for external temperature compensation or high-temp discrete supervision circuits. |
Use Scenario: Portable blood glucose meter requiring FDA-grade boot integrity and fault-free initialization on first button press. IC Role / Device Role / Timing Role: Provides certified power-on reset with 20ms hold time and MR-initiated self-test reset via tactile switch. Use Value: Meets IEC 62304 software lifecycle requirements for hardware-initiated safe state entry during power transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SEUS30+T | Same 3.00V threshold and SOT23-4 package, but fixed 140ms timeout and higher 12μA ICC (max) | Designed for systems needing longer reset hold time; less suitable for fast-recovery or ultra-low-power use cases | Select when 140ms timeout is required and 7μA higher supply current is acceptable |
| TPS3808G30DBVR | 3.0V threshold, 20ms timeout, but push-pull RESET output and 1.5μA typical ICC - no external pullup needed | Requires different reset net topology; incompatible with level-shifting or wired-OR reset bus configurations | Select when board space permits push-pull drive and no cross-rail reset signaling is needed |
Compared with MAX6315US30D2+T, the MAX811SEUS30+T offers longer reset hold time but higher current and no MR debounce; the TPS3808G30DBVR reduces power and simplifies layout but sacrifices open-drain flexibility and level-shifting capability.
Availability
MAX6315US30D2+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive body control modules, and medical point-of-care instruments requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6315US30D2+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX6315US30D2+T belongs to the MAX63xx family of precision voltage supervisors, engineered specifically for robust, low-power, single-rail reset generation in space-constrained and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6315US30D2+T?
The MAX6315US30D2+T has a nominal reset threshold of 3.00V, with a guaranteed tolerance of ±3.5% over the full operating temperature range of –40°C to +125°C. This specification is laser-trimmed at wafer test and confirmed in the Electrical Characteristics table under "Reset Threshold (Note 1)" with min/max bounds referenced to VTH.
Does MAX6315US30D2+T require an external pullup resistor on the RESET pin?
Yes, the MAX6315US30D2+T features an open-drain RESET output and requires an external pullup resistor. A 10kΩ resistor to a compatible voltage rail (0V to +6.0V) is recommended per the datasheet's Typical Operating Circuit and Electrical Characteristics, ensuring proper logic-high assertion while meeting sink-current requirements.
Can MAX6315US30D2+T monitor a 1.8V supply rail?
No - the MAX6315US30D2+T is factory-trimmed for a 3.00V reset threshold and cannot reliably supervise 1.8V rails. For 1.8V systems, select a variant such as MAX6315US18D2+T (1.80V threshold) or consider the MAX6326 series, which offers thresholds down to 0.9V with matching 20ms timeout.
What is the minimum pulse width required on the MR pin of MAX6315US30D2+T?
The MR input of MAX6315US30D2+T requires a minimum logic-low pulse width of 1μs to reliably trigger reset assertion. This value is specified in the Electrical Characteristics table under "MR Minimum Input Pulse" and is independent of temperature or supply voltage within the operating range.
Is MAX6315US30D2+T pin-compatible with MAX811?
Yes - the MAX6315US30D2+T is explicitly stated in the Benefits and Features section as "Pin Compatible with MAX811", sharing identical SOT23-4 pinout (VCC, MR, RESET, GND), same footprint, and compatible electrical behavior for 3.0V threshold variants, though timeout and current specs differ.
MAX6315US30D2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US30D2+T FAQ
1.How can I place an order for MAX6315US30D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US30D2+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 MAX6315US30D2+T reliable?
The price and inventory of MAX6315US30D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US30D2+T is usually 5 days.
3.What payment methods are accepted for MAX6315US30D2+T?
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4.How is shipping managed for MAX6315US30D2+T?
MAX6315US30D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US30D2+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 MAX6315US30D2+T?
For technical support, including MAX6315US30D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US30D2+T requirements.
6.How does Aetrix verify that MAX6315US30D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US30D2+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 MAX6315US30D2+T meets industry standards.
7.What is the process for return or replacement of MAX6315US30D2+T?
All MAX6315US30D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US30D2+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 MAX6315US30D2+T part is unused and in its original packaging.
Return procedure for MAX6315US30D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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