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Analog Devices Inc./Maxim Integrated MAX6382XR44D5-T
- Part No.:
- MAX6382XR44D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR44D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
MAX6382XR44D5-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.38V reset threshold, 280ms minimum VCC reset timeout, and 3μA supply current at +1.8V. It monitors single-supply voltage rails in embedded systems and asserts a clean reset signal during power-up, brownout, or shutdown events to ensure reliable μP initialization.
For engineers reviewing the MAX6382XR44D5-T datasheet, MAX6382XR44D5-T pinout, MAX6382XR44D5-T application, or MAX6382XR44D5-T equivalent, this device delivers precise low-power reset supervision for battery-powered controllers, industrial sensors, and dual-rail power systems requiring guaranteed reset assertion down to VCC = 1V.
Technical Context
The MAX6382XR44D5-T implements a precision bandgap-based voltage comparator with ±2.5% reset threshold accuracy over –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 280ms (min) reset pulse after VCC rises above 4.38V, independent of supply ramp rate.
This variant features a 3-pin SC70 package with active-high push-pull RESET output, no manual reset (MR) input, and no auxiliary RESET IN pin-distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 family members. It guarantees valid logic levels on RESET down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal (4.27V min / 4.48V max); factory-trimmed for stable detection of 4.5V rail undervoltage |
| VCC Reset Timeout | 280ms minimum; ensures sufficient hold time for μP core and peripherals to stabilize post-power-up | Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT endpoints |
| Operating Voltage Range | 1.0V to 5.5V; supports valid reset assertion even during deep brownout (down to 1V) |
| Reset Threshold Accuracy | ±2.5% over –40°C to +125°C; eliminates need for external calibration in automotive/industrial environments |
| Output Type | Active-high push-pull; drives high without external pullup, simplifying PCB layout and reducing BOM count |
| Package | 3-pin SC70 (X3+2 outline); 1.25mm × 0.85mm footprint ideal for space-constrained portable designs |
Pinout & Package
MAX6382XR44D5-T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208) with exposed pad not connected internally. Pin 1 = RESET (active-high push-pull), Pin 2 = VCC, Pin 3 = GND.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; asserts high during reset condition and deasserts low when VCC > 4.38V for ≥280ms |
| 2 | VCC | Main supply input and monitored voltage rail; powers internal circuitry and serves as primary reset trigger source |
| 3 | GND | Analog/digital ground reference; must be low-impedance connection to maintain reset threshold stability |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 4.38V threshold | Eliminates external resistor divider and associated tolerance stack-up in 4.5V system monitoring |
| 280ms reset timeout | Matches typical boot sequence timing of ARM Cortex-M0/M3 microcontrollers without software delay overhead |
| 3μA supply current at 1.8V | Reduces quiescent power by >90% versus legacy reset ICs, extending battery life in always-on sensors |
| ±2.5% threshold accuracy over temperature | Ensures deterministic reset behavior across automotive under-hood (-40°C to +125°C) operating range |
| Valid RESET down to VCC = 1V | Prevents spurious release during slow discharge, critical for graceful shutdown in energy-harvesting systems |
Applications
| Industrial PLC I/O Module | Medical Wearable Sensor Hub |
|---|---|
|
Use Scenario: Monitors 4.5V auxiliary power rail supplying isolated analog front-end and CAN transceiver. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to ARM Cortex-M4F during rail collapse or cold start. Use Value: 280ms timeout prevents premature firmware execution before ADC reference stabilizes and isolation barrier powers up. |
Use Scenario: Powers ultra-low-power ECG analog signal chain and BLE SoC from single CR2032 cell with 4.5V boost converter. IC Role / Device Role / Timing Role: Resets BLE SoC when boosted rail dips below 4.38V due to battery sag or load transient. Use Value: 3μA quiescent current extends usable battery life beyond 12 months while guaranteeing safe shutdown at end-of-life. |
| Automotive Body Control Module | Smart Energy Meter MCU Subsystem |
|
Use Scenario: Supervises 4.5V domain controller supply in junction box, exposed to load dump and cold-crank conditions. IC Role / Device Role / Timing Role: Active-high push-pull RESET output directly interfaces with Infineon AURIX TC3xx reset input without pullup resistor. Use Value: ±2.5% threshold accuracy over –40°C to +125°C avoids false resets during thermal cycling and ensures compliance with ISO 16750-2. |
Use Scenario: Ensures secure boot of metrology SoC (e.g., TI MSP430FR6989) powered from 4.5V LDO fed by AC/DC converter. IC Role / Device Role / Timing Role: Guarantees reset assertion during AC line dropout or brownout lasting <280ms. Use Value: Factory-trimmed 4.38V threshold matches LDO dropout specification, eliminating field calibration and reducing test time. |
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 | 4.38V threshold, 240ms timeout, SOT23-3 package; higher 12μA ICC at 1.8V | Lacks AEC-Q100 qualification; not rated for automotive under-hood use | Select when cost sensitivity outweighs quiescent current and automotive qualification requirements |
| TPS3808G33DBVR | 3.3V threshold (not 4.38V); adjustable timeout via capacitor; 1.6μA ICC at 1.8V | Requires external RC network for timing; incompatible with fixed-threshold 4.5V rail monitoring | Choose only if system uses 3.3V supply or requires programmable timeout; not a functional substitute for MAX6382XR44D5-T |
Compared with MAX809TRD3-T and TPS3808G33DBVR, the MAX6382XR44D5-T uniquely combines factory-trimmed 4.38V detection, 280ms fixed timeout, sub-μA quiescent current, and AEC-Q100 qualification in a 3-pin SC70-making it the sole option for space-constrained, battery-aware, automotive-grade 4.5V rail supervision.
Availability
MAX6382XR44D5-T is available at Aetrix Electronics and suitable for industrial PLCs, medical wearables, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR44D5-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 and mixed-signal ICs for demanding industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed reset supervision for microprocessor-based systems where reliability, small size, and wide temperature operation are critical.
FAQ
What is the exact reset threshold voltage of the MAX6382XR44D5-T?
The MAX6382XR44D5-T has a factory-set nominal reset threshold of 4.38V, with guaranteed limits of 4.27V (min) and 4.48V (max) at +25°C, and ±2.5% accuracy over –40°C to +125°C. This value is encoded in the "44" suffix per the Reset Threshold table in the datasheet, targeting 4.5V supply rail monitoring.
Does the MAX6382XR44D5-T include a manual reset input (MR)?
No, the MAX6382XR44D5-T does not feature a manual reset input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which lacks MR functionality. Manual reset capability is only present in MAX6384–MAX6386 and MAX6390 variants, as confirmed in the Selector Guide and Pin Description sections.
What is the reset timeout period specified for the MAX6382XR44D5-T?
The MAX6382XR44D5-T provides a minimum reset timeout period of 280ms, indicated by the "D5" suffix in its part number. This duration is guaranteed after VCC rises above the 4.38V threshold and ensures sufficient hold time for microprocessor initialization and peripheral stabilization.
Which package type does the MAX6382XR44D5-T use?
The MAX6382XR44D5-T is packaged in a 3-pin SC70 (outline 21-0075, land pattern 90-0208), identified by the "XR" prefix in its order code. This compact 1.25mm × 0.85mm package supports high-density layouts in portable and automotive electronics.
Is the MAX6382XR44D5-T qualified for automotive applications?
Yes, the MAX6382XR44D5-T is AEC-Q100 qualified, as explicitly stated in the Features section of the datasheet. Its –40°C to +125°C operating temperature range and ±2.5% reset threshold accuracy over that range meet automotive under-hood requirements.
MAX6382XR44D5-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:
- 4.38V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6382XR44D5-T FAQ
1.How can I place an order for MAX6382XR44D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR44D5-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 MAX6382XR44D5-T reliable?
The price and inventory of MAX6382XR44D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR44D5-T is usually 5 days.
3.What payment methods are accepted for MAX6382XR44D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR44D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR44D5-T?
MAX6382XR44D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR44D5-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 MAX6382XR44D5-T?
For technical support, including MAX6382XR44D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR44D5-T requirements.
6.How does Aetrix verify that MAX6382XR44D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR44D5-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 MAX6382XR44D5-T meets industry standards.
7.What is the process for return or replacement of MAX6382XR44D5-T?
All MAX6382XR44D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR44D5-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 MAX6382XR44D5-T part is unused and in its original packaging.
Return procedure for MAX6382XR44D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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