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Analog Devices Inc./Maxim Integrated MAX6382XR23D3+
- Part No.:
- MAX6382XR23D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR23D3+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,193
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Product details
Overview
MAX6382XR23D3+ from Maxim Integrated is a 3-pin SC70 packaged microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.31V reset threshold (±2.5% over -40°C to +125°C), and 140ms minimum VCC reset timeout. It monitors single-supply voltages from +1.8V to +5.0V while drawing only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1V. Used in portable battery-powered equipment for reliable power-up sequencing.
For engineers reviewing the MAX6382XR23D3+ datasheet, MAX6382XR23D3+ pinout, MAX6382XR23D3+ application, or MAX6382XR23D3+ equivalent, key selection criteria include its 2.31V threshold accuracy, 140ms timeout, active-high push-pull drive capability, SC70 package footprint, and compatibility with low-voltage μP systems requiring brownout immunity.
Technical Context
The MAX6382XR23D3+ implements a precision voltage comparator with internal ±2.5% threshold tolerance over full temperature range and 60ppm/°C tempco, paired with a monolithic timer generating a guaranteed-minimum 140ms reset assertion after VCC recovery. Its active-high push-pull output drives directly into μP reset inputs without external pullup, supporting logic-level compatibility across 1.0V–5.5V VCC operation.
Unlike variants with manual reset (MR) or auxiliary RESET IN inputs, the MAX6382XR23D3+ is a dedicated single-supply monitor with no MR or RESET IN pins - confirmed by its 3-pin SC70 pinout and family selector guide. It shares pin compatibility with MAX809/MAX810 but differs in threshold and timeout options.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V nominal, ±2.5% over -40°C to +125°C - ensures reliable detection of 2.3V supply brownout before μP malfunction |
| VCC Operating Range | 1.0V to 5.5V - supports operation down to 1V for valid reset assertion during deep brownout |
| Reset Timeout | 140ms minimum - holds μP in reset long enough for stable clock and supply settling post-power-up |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on portable instrumentation |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor; drives high-impedance μP reset input directly |
| Package | 3-pin SC70 (2.0mm × 2.1mm) - ultra-small footprint for space-constrained handheld and wearable designs |
| Temperature Range | -40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
MAX6382XR23D3+ uses a 3-pin SC70 package (package code X3+2), with exposed pad not electrically connected. Pin 1 is RESET (active-high push-pull output), Pin 2 is VCC (supply input), and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; asserts high when VCC < 2.31V or during power-up; deasserts low after 140ms timeout |
| 2 | VCC | Main supply input and monitored voltage rail; operates from 1.0V to 5.5V; powers internal comparator and timer |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.31V with ±2.5% tolerance over full temperature range - eliminates external resistor divider and calibration effort |
| Low quiescent current | 3μA at 1.8V - reduces standby power in battery-critical applications such as medical sensors and IoT edge nodes |
| Guaranteed reset validity | Operates correctly down to VCC = 1.0V - ensures deterministic reset behavior even during severe undervoltage conditions |
| Fast power-down response | 35μs typical VCC-to-reset delay - detects rapid supply collapse faster than μP can execute erroneous instructions |
| High noise immunity | Negative-going VCC transient rejection up to 150µs at 100mV overdrive - suppresses false resets from switching noise or ESD coupling |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters require fail-safe startup and brownout recovery without firmware intervention. IC Role / Device Role / Timing Role: MAX6382XR23D3+ acts as primary power supervisor, asserting active-high reset to ARM Cortex-M0+ MCU until regulated 3.3V rail stabilizes. Use Value: 140ms timeout ensures ADC reference and sensor bias circuits settle fully; 3μA current extends AA battery life beyond 5 years in sleep mode. | Use Scenario: DIN-rail mounted programmable logic controllers operate in harsh 24V DC industrial environments with frequent voltage sags. IC Role / Device Role / Timing Role: MAX6382XR23D3+ monitors local 3.3V logic supply derived from 24V bus, forcing controlled reboot on undervoltage events. Use Value: ±2.5% threshold accuracy prevents nuisance resets during normal 5% line variation; -40°C to +125°C rating matches extended ambient requirements. |
| Automotive Body Control Units | Wearable Fitness Trackers |
Use Scenario: BCM modules integrate LIN transceivers and LED drivers powered from switched 5V rails subject to load-dump transients. IC Role / Device Role / Timing Role: MAX6382XR23D3+ supervises the 3.3V domain powering microcontroller and CAN interface, ensuring clean boot after ignition cycle. Use Value: Active-high push-pull output interfaces directly with Infineon AURIX TC2xx reset pin; SC70 footprint saves PCB area in dense multi-layer BCM layouts. | Use Scenario: Ultra-thin wrist-worn devices use coin-cell batteries and require zero-maintenance power management over 2+ year service life. IC Role / Device Role / Timing Role: MAX6382XR23D3+ provides reset supervision for Nordic nRF52832 SoC, monitoring its 1.8V core supply during cold-start from depleted battery. Use Value: Valid reset down to VCC = 1.0V allows safe initialization even at end-of-battery voltage; RoHS-compliant +T package meets consumer electronics compliance mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | Same 3-pin SC70 package, 2.32V threshold, but only 140ms timeout; ±2% threshold accuracy at +25°C (not specified over full temp range) | Lacks guaranteed ±2.5% tolerance over -40°C to +125°C; less suitable for wide-temperature industrial deployments | Select MAX809TRD3+T only for cost-sensitive commercial applications where full-temperature spec is not required |
| TPS3808G125DBVR | 2.35V threshold, 200ms timeout, 1.8V–6.0V VCC range; requires external pullup for open-drain variant (not push-pull) | Open-drain output necessitates external pullup resistor; higher 8μA typical supply current at 1.8V | Choose TPS3808G125DBVR if dual-supply monitoring or adjustable timeout via capacitor is needed - not a direct replacement |
Compared with MAX809TRD3+T and TPS3808G125DBVR, the MAX6382XR23D3+ delivers tighter full-temperature threshold accuracy, lower quiescent current, and true active-high push-pull drive - making it optimal for space- and power-constrained embedded systems demanding robust, maintenance-free operation.
Availability
MAX6382XR23D3+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and wearable fitness trackers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR23D3+ 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, automotive, communications, and computing markets.
The MAX6381–MAX6390 family was engineered specifically for low-power, single/dual-supply microprocessor reset supervision in battery-operated and thermally demanding applications - emphasizing accuracy, ultra-low current, and compact packaging.
FAQ
What is the exact reset threshold voltage of MAX6382XR23D3+ and how stable is it over temperature?
The MAX6382XR23D3+ has a factory-set nominal reset threshold of 2.31V, with guaranteed tolerance of ±2.5% over the full operating temperature range of -40°C to +125°C. This stability is achieved via laser-trimmed on-chip resistors and a low-tempco (60ppm/°C) reference, ensuring consistent brownout detection without external calibration. The MAX6382XR23D3+ datasheet specifies this performance in the Electrical Characteristics table under "VCC Reset Threshold".
Does MAX6382XR23D3+ support manual reset functionality?
No, the MAX6382XR23D3+ does not include a manual reset (MR) input. It is a dedicated single-supply supervisor with only RESET, VCC, and GND pins - confirmed by its 3-pin SC70 configuration and the family selector guide, which assigns MR functionality exclusively to MAX6384/MAX6385/MAX6386/MAX6390 variants. For manual reset capability, consider MAX6384XR23D3+ instead.
What is the minimum VCC voltage at which MAX6382XR23D3+ guarantees correct reset output logic state?
The MAX6382XR23D3+ guarantees valid reset output behavior down to VCC = 1.0V, as explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections. Below 1.0V, the device may not maintain defined logic levels on the active-high push-pull RESET pin. This feature ensures deterministic system behavior during deep brownout - a critical requirement for safety-critical applications using the MAX6382XR23D3+.
Can MAX6382XR23D3+ be used to monitor a 1.8V supply rail?
Yes, the MAX6382XR23D3+ is fully specified to monitor 1.8V supply rails. Its operating voltage range is 1.0V to 5.5V, and its 2.31V reset threshold is appropriate for detecting undervoltage on a nominal 2.5V or 3.3V rail. For direct 1.8V rail monitoring, a lower-threshold variant like MAX6382XR18D3+ (1.76V threshold) would be more suitable - the MAX6382XR23D3+ itself is optimized for 2.3V–2.5V domains.
Is MAX6382XR23D3+ pin-compatible with legacy Maxim reset ICs like MAX809?
Yes, the MAX6382XR23D3+ is pin-compatible with MAX809 series devices in the 3-pin SC70 package, sharing identical pin 1 (RESET), pin 2 (VCC), and pin 3 (GND) assignments and electrical drive characteristics. However, differences exist in threshold accuracy over temperature and timeout timing granularity - the MAX6382XR23D3+ offers superior ±2.5% full-range tolerance versus MAX809's ±2% at +25°C only, confirming functional upgrade path without PCB change.
MAX6382XR23D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.31V
- 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:
- SC-70-3
MAX6382XR23D3+ FAQ
1.How can I place an order for MAX6382XR23D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR23D3+ 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 MAX6382XR23D3+ reliable?
The price and inventory of MAX6382XR23D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR23D3+ is usually 5 days.
3.What payment methods are accepted for MAX6382XR23D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR23D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR23D3+?
MAX6382XR23D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR23D3+ 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 MAX6382XR23D3+?
For technical support, including MAX6382XR23D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR23D3+ requirements.
6.How does Aetrix verify that MAX6382XR23D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6382XR23D3+ 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 MAX6382XR23D3+ meets industry standards.
7.What is the process for return or replacement of MAX6382XR23D3+?
All MAX6382XR23D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR23D3+, 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 MAX6382XR23D3+ part is unused and in its original packaging.
Return procedure for MAX6382XR23D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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