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Analog Devices Inc./Maxim Integrated MAX6382XR31D3+T
- Part No.:
- MAX6382XR31D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR31D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,936
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Product details
Overview
MAX6382XR31D3+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.08V reset threshold, 140ms minimum VCC reset timeout, and guaranteed operation down to VCC = 1V. It monitors single-supply rails in low-power embedded systems, consumes only 3μA at +1.8V, and features ±2.5% threshold accuracy over -40°C to +125°C. Used in portable battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6382XR31D3+T datasheet, MAX6382XR31D3+T pinout, MAX6382XR31D3+T application, or MAX6382XR31D3+T equivalent, key selection criteria include active-high push-pull output logic, SC70-3 package compatibility, 3.08V threshold tolerance, 140ms timeout timing, and VCC-operated reset assertion validity down to 1V.
Technical Context
The MAX6382XR31D3+T implements a precision voltage comparator with internal 3.08V reference and an on-chip timer that asserts RESET high for ≥140ms after VCC rises above threshold. Its active-high push-pull output drives directly into μP reset inputs without external pullup, and guarantees valid logic state even as VCC decays to 1V.
Designed for single-rail monitoring, it lacks manual reset (MR) or auxiliary RESET IN inputs-features reserved for MAX6384–MAX6390 and MAX6387–MAX6389 variants. The device uses BiCMOS process technology and meets AEC-Q100 requirements when ordered with /V suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V nominal (±2.5% over -40°C to +125°C); triggers reset when VCC falls below this level |
| Reset Timeout | 140ms minimum; ensures μP remains held in reset long enough for stable power-up sequencing |
| 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 on RESET line |
| Operating Voltage | 1.0V to 5.5V; supports valid reset assertion down to VCC = 1V, critical for deep brownout recovery |
| Package | 3-pin SC70; footprint-compatible with legacy MAX809/MAX810 and enables ultra-compact PCB layout |
| Temperature Range | -40°C to +125°C; qualified for industrial and automotive under-hood applications |
Pinout & Package
MAX6382XR31D3+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm. Pin 1 = RESET (active-high push-pull output), Pin 2 = VCC (supply input), Pin 3 = GND (ground reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high during reset assertion, low otherwise; no external pullup required |
| 2 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and serves as reset threshold reference |
| 3 | GND | Ground reference for all internal comparators, timers, and output drivers; must be low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.08V with ±2.5% accuracy across full temperature range ensures consistent power-fail detection without calibration |
| Ultra-low quiescent current | 3μA at +1.8V enables integration into energy-harvesting and coin-cell-powered systems without compromising battery life |
| Valid reset output down to VCC = 1V | Guarantees deterministic μP reset state during deep brownout, preventing undefined execution before power collapse |
| Push-pull active-high output | Directly interfaces with standard μP reset inputs requiring active-high assertion, eliminating BOM cost and board space for pullup resistors |
| SC70-3 footprint compatibility | Drop-in replacement for MAX809/MAX810 series in existing layouts, supporting seamless design migration and second-source flexibility |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Wearable ECG sensor operating from CR2032 coin cell with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Monitors VCC during cold-start and brownout events; asserts active-high RESET to hold microcontroller in known state until regulated 3.3V rail stabilizes. Use Value: 3μA supply current extends battery life beyond 2 years; 140ms timeout ensures complete ADC initialization before firmware execution. |
Use Scenario: Environmental data logger deployed in remote field locations with solar charging and Li-ion backup. IC Role / Device Role / Timing Role: Detects VCC sag below 3.08V during low-light solar charging; generates 140ms active-high reset pulse to prevent corrupted flash writes during power transition. Use Value: ±2.5% threshold accuracy over -40°C to +125°C maintains reliable reset behavior across desert and arctic deployments. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
Use Scenario: DIN-rail mounted programmable logic controller module powered from 24V DC-DC converter with 3.3V secondary rail. IC Role / Device Role / Timing Role: Supervises 3.3V core supply; asserts RESET high during undervoltage transients caused by motor switching noise on shared ground plane. Use Value: Negative-going VCC transient immunity up to 35µs at 100mV overdrive prevents spurious resets in electrically noisy factory environments. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting, powered from vehicle battery via LDO. IC Role / Device Role / Timing Role: Monitors 3.3V microcontroller supply; provides active-high reset during ignition cycling and load-dump-induced sags. Use Value: AEC-Q100 qualification (with /V suffix) and -40°C to +125°C operation ensure compliance with automotive reliability standards. |
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 | 3.08V threshold, 240ms timeout, active-low open-drain output; requires external pullup resistor | Suitable where system reset logic is active-low and board layout allows pullup placement | Select when legacy compatibility with MAX809 footprint is required and active-low signaling matches host μP interface |
| TLV809K31DBZR | 3.08V threshold, 140ms timeout, active-high push-pull; 1.8V–6V operating range; SOT-23-3 package | Offers wider VCC range and identical timing but different thermal resistance (θJA = 274°C/W vs. 340.4°C/W) | Choose for designs needing higher ambient temperature margin or TI-sourced supply chain diversification |
Compared with MAX6382XR31D3+T, MAX809TRD3+T requires external pullup and offers longer timeout, while TLV809K31DBZR matches timing and output type but differs in package thermal performance and manufacturer ecosystem support.
Availability
MAX6382XR31D3+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR31D3+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, automotive, communications, and computing markets.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits optimized for battery-constrained and thermally demanding applications where reliable power-on reset and brownout protection are mission-critical.
FAQ
What is the exact reset threshold voltage of MAX6382XR31D3+T?
The MAX6382XR31D3+T has a factory-set nominal reset threshold of 3.08V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "31" corresponds to VTH(min) = 3.00V, VTH(nom) = 3.08V, and VTH(max) = 3.15V.
Does MAX6382XR31D3+T support manual reset functionality?
No, MAX6382XR31D3+T does not include a manual reset (MR) input. Manual reset capability is only present in MAX6384–MAX6386 and MAX6390 variants. The MAX6382XR31D3+T is a single-supply, no-MR variant with dedicated VCC monitoring and active-high push-pull RESET output.
What package type and dimensions does MAX6382XR31D3+T use?
MAX6382XR31D3+T is supplied in a 3-pin SC70 package (outline number 21-0075), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is documented as 90-0208, and it is RoHS-compliant, indicated by the "+" suffix in the part number.
Can MAX6382XR31D3+T operate reliably below 1.8V supply voltage?
Yes, MAX6382XR31D3+T operates from 1.0V to 5.5V and guarantees valid RESET output logic state down to VCC = 1.0V. At 1.8V, its typical supply current is 3μA; at 1.0V, it remains functional with reduced drive strength but maintains correct reset assertion timing and threshold detection.
Is MAX6382XR31D3+T pin-compatible with other supervisory ICs?
Yes, MAX6382XR31D3+T is pin-compatible with the MAX809/MAX810 series in the 3-pin SC70 package. It shares identical pinout (RESET, VCC, GND) and footprint, enabling direct substitution in existing designs without PCB modification-provided the active-high output logic aligns with the target μP's reset input requirement.
MAX6382XR31D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX6382XR31D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR31D3+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 MAX6382XR31D3+T reliable?
The price and inventory of MAX6382XR31D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR31D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR31D3+T?
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4.How is shipping managed for MAX6382XR31D3+T?
MAX6382XR31D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR31D3+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 MAX6382XR31D3+T?
For technical support, including MAX6382XR31D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR31D3+T requirements.
6.How does Aetrix verify that MAX6382XR31D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR31D3+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 MAX6382XR31D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR31D3+T?
All MAX6382XR31D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR31D3+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 MAX6382XR31D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR31D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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