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Analog Devices Inc./Maxim Integrated MAX6382XR31D3+
- Part No.:
- MAX6382XR31D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR31D3+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,490
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Product details
Overview
MAX6382XR31D3+ from Maxim Integrated is a 3-pin SC70 packaged, active-high push-pull μP supervisory circuit with factory-set 3.08V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors single-supply VCC in battery-powered microcontroller systems to prevent erroneous code execution during power-up, brownout, or transient events.
For engineers reviewing the MAX6382XR31D3+ datasheet, MAX6382XR31D3+ pinout, MAX6382XR31D3+ application, or MAX6382XR31D3+ equivalent, key selection criteria include guaranteed reset assertion down to VCC = 1V, negative-going VCC transient immunity, compatibility with 1.8V–5.0V logic domains, and RoHS-compliant lead-free packaging.
Technical Context
The MAX6382XR31D3+ implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 140ms (min) reset pulse after VCC rises above the 3.08V threshold.
Reset output is active-high push-pull, sourcing/sinking up to 800µA/1.2mA while maintaining valid logic levels down to VCC = 1.0V. No manual reset (MR) or auxiliary RESET IN inputs are present - this variant is optimized for simple single-rail monitoring without external control or dual-voltage supervision.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V (nominal), ±2.5% tolerance over full temperature range - ensures reliable detection of 3.3V rail brownout |
| Reset Timeout | 140ms (minimum) - guarantees sufficient hold time for microcontroller initialization sequences | Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion even during deep brownout recovery |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor, reduces BOM count |
| Package | 3-pin SC70 (2.0mm × 2.1mm) - ultra-compact footprint for space-constrained portable designs |
| Temp Range | -40°C to +125°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
MAX6382XR31D3+ uses a 3-pin SC70 package (2.0mm × 2.1mm, 0.65mm pitch) with exposed pad for thermal performance. Pin 1 = RESET (active-high push-pull output), Pin 2 = VCC (supply input), Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high during reset condition; sinks 1.2mA / sources 800µA at VCC ≥ 2.5V |
| 2 | VCC | Primary supply input and monitored voltage rail; operates from 1.0V to 5.5V |
| 3 | GND | Analog/digital ground reference; must be low-impedance connection for accurate threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.08V with ±2.5% accuracy over -40°C to +125°C - eliminates external resistor divider and calibration |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on edge nodes without compromising supervision integrity |
| Valid reset down to VCC = 1V | Guaranteed logic-level output even during deep undervoltage - prevents spurious release before full rail recovery |
| Negative-going transient immunity | Rejects sub-100µs glitches below reset threshold - avoids false resets in electrically noisy environments |
| RoHS-compliant SC70 package | Lead-free, halogen-free 3-pin SC70 with JEDEC-standard footprint - compatible with standard reflow profiles |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless temperature sensor powered by CR2032 coin cell operates intermittently, waking every 5 minutes to sample and transmit data. IC Role / Device Role / Timing Role: MAX6382XR31D3+ continuously monitors the 3.0V supply rail and asserts active-high RESET if voltage drops below 3.08V due to battery depletion or load surge. Use Value: The 140ms minimum timeout ensures MCU completes boot sequence before releasing reset; 3μA current draw adds negligible load to the aging battery. | Use Scenario: An industrial digital input module receives 24V DC field power, regulated down to 3.3V for its ARM Cortex-M4 controller and isolated CAN transceiver. IC Role / Device Role / Timing Role: MAX6382XR31D3+ supervises the 3.3V domain, asserting RESET on brownout to halt firmware execution until stable power resumes. Use Value: ±2.5% threshold accuracy over -40°C to +125°C guarantees consistent behavior across ambient extremes; push-pull output interfaces directly with MCU's active-high reset pin without pullup. |
| Automotive Body Control Module (BCM) | Medical Wearable Vital Sign Monitor |
Use Scenario: A BCM subassembly powers multiple LIN transceivers and LED drivers from a switched 3.3V rail derived from vehicle battery. IC Role / Device Role / Timing Role: MAX6382XR31D3+ detects rapid VCC collapse during ignition cranking or load dump recovery, holding MCU in reset until rail stabilizes above 3.08V. Use Value: Negative-going transient immunity prevents false resets from <100µs supply glitches; AEC-Q100 qualification (via /V suffix variants) confirms suitability for automotive environments. | Use Scenario: A wrist-worn ECG patch uses a 1.8V LDO to power its analog front-end and BLE SoC, operating from a rechargeable LiPo cell. IC Role / Device Role / Timing Role: MAX6382XR31D3+ supervises the 1.8V rail, asserting RESET when cell voltage falls below 3.08V × (1.8V/3.3V) ≈ 1.68V - enabling graceful shutdown before data corruption. Use Value: Valid operation down to VCC = 1.0V ensures reset remains asserted until final discharge; 3-pin SC70 footprint saves critical PCB area in miniaturized wearable form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 3.08V threshold, 140ms timeout, same 3-pin SC70 package, but higher 12μA ICC at +1.8V | Lacks guaranteed operation down to VCC = 1V; no transient immunity specification | Select MAX809TRD3+T only if legacy design reuse is required and ultra-low current is not critical |
| TPS3808G30DBVR | 3.0V threshold (±0.5%), 200ms timeout, SOT-23-5 package, 1.1μA ICC at +1.8V | Includes manual reset input and enable pin - adds complexity where not needed | Choose TPS3808G30DBVR when tighter threshold tolerance or lower current outweighs footprint and feature simplicity |
Compared with MAX809TRD3+T, MAX6382XR31D3+ reduces supply current by 75% at 1.8V while guaranteeing reset validity to 1V; versus TPS3808G30DBVR, it trades 0.5% threshold accuracy and 1.1μA current for smaller 3-pin footprint and zero unused pins - optimizing for minimal BOM and layout area in cost-sensitive portable designs.
Availability
MAX6382XR31D3+ is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC modules, automotive body control units, and medical wearables requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6382XR31D3+ 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 and mixed-signal ICs for industrial, automotive, and computing applications, with emphasis on power efficiency and reliability.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits targeting space- and energy-constrained embedded systems where deterministic reset behavior under voltage stress is critical.
FAQ
What is the exact reset threshold voltage of MAX6382XR31D3+ and how tightly is it specified?
The MAX6382XR31D3+ has a nominal reset threshold of 3.08V, with ±2.5% accuracy guaranteed over the full operating temperature range of -40°C to +125°C. This corresponds to a minimum threshold of 3.00V and maximum of 3.15V at +25°C, tightening to 3.00V–3.15V across temperature. The value is factory-trimmed and does not require external components.
Does MAX6382XR31D3+ support manual reset functionality?
No, MAX6382XR31D3+ does not include a manual reset (MR) input. It is a dedicated single-rail supervisor with only VCC monitoring and active-high push-pull RESET output. Manual reset capability is available only in MAX6384/MAX6385/MAX6386/MAX6390 variants, which use 4-pin SC70 or 6-pin µDFN packages.
Can MAX6382XR31D3+ operate reliably when VCC drops below 1.8V?
Yes, MAX6382XR31D3+ is fully specified to operate down to VCC = 1.0V. Its reset output remains valid (correct logic state) throughout this range, ensuring the microcontroller stays held in reset until the supply recovers sufficiently - a key requirement for robust brownout recovery in low-voltage systems.
What is the supply current consumption of MAX6382XR31D3+ at different VCC levels?
MAX6382XR31D3+ draws 3μA typical at +1.8V, 4μA at +2.5V, 6μA at +3.6V, and 7μA at +5.5V (no load). These values are measured across temperature and represent actual quiescent current - critical for extending battery life in always-on applications such as remote sensors and wearables.
Is MAX6382XR31D3+ pin-compatible with other members of the MAX6381–MAX6390 family?
MAX6382XR31D3+ shares the same 3-pin SC70 pinout with MAX6381 and MAX6383, but differs functionally: MAX6381 has active-low push-pull output, MAX6383 has active-low open-drain output. Swapping them requires verifying reset polarity and output drive requirements in the target system - they are not drop-in replacements despite identical packaging.
MAX6382XR31D3+ 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:
- 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:
- SC-70-3
MAX6382XR31D3+ FAQ
1.How can I place an order for MAX6382XR31D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR31D3+ 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 MAX6382XR31D3+ reliable?
The price and inventory of MAX6382XR31D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR31D3+ is usually 5 days.
3.What payment methods are accepted for MAX6382XR31D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR31D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR31D3+?
MAX6382XR31D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR31D3+ 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 MAX6382XR31D3+?
For technical support, including MAX6382XR31D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR31D3+ requirements.
6.How does Aetrix verify that MAX6382XR31D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6382XR31D3+ 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 MAX6382XR31D3+ meets industry standards.
7.What is the process for return or replacement of MAX6382XR31D3+?
All MAX6382XR31D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR31D3+, 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 MAX6382XR31D3+ part is unused and in its original packaging.
Return procedure for MAX6382XR31D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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