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Analog Devices Inc./Maxim Integrated MAX6382XR44D2+T
- Part No.:
- MAX6382XR44D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR44D2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:375
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Product details
Overview
MAX6382XR44D2+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.38V reset threshold and 20ms minimum reset timeout, operating from 1.0V to 5.5V supply while consuming only 3μA at 1.8V. It guarantees valid reset output down to VCC = 1V and is designed for power-up/brownout monitoring in space-constrained embedded systems.
For engineers reviewing the MAX6382XR44D2+T datasheet, MAX6382XR44D2+T pinout, MAX6382XR44D2+T application, or MAX6382XR44D2+T equivalent, key selection criteria include its active-high push-pull output configuration, ±2.5% reset threshold accuracy over –40°C to +125°C, SC70-3 package footprint, and immunity to negative-going VCC transients.
Technical Context
The MAX6382XR44D2+T implements a precision voltage comparator with internal 4.38V reference and an on-chip timer that asserts RESET high for ≥20ms after VCC rises above threshold. Its reset logic remains functional down to VCC = 1V, ensuring deterministic behavior during deep brownout conditions.
Unlike open-drain variants, this device uses a push-pull output stage capable of sourcing/sinking current without external pullup, simplifying interface with μP reset inputs requiring active-high assertion. It lacks manual reset (MR) and auxiliary RESET IN inputs-features reserved for MAX6384–MAX6390 and MAX6387–MAX6389 respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal (±2.5% over –40°C to +125°C); ensures reliable detection of 4.5V rail collapse before system instability. |
| Reset Timeout | 20ms minimum; provides sufficient hold time for μP initialization after power stabilization. |
| Supply Current | 3μA at +1.8V; enables use in battery-powered equipment with multi-year standby life. |
| Operating Voltage | 1.0V to 5.5V; supports operation during deep undervoltage events and compatibility with 1.2V–5V logic domains. |
| Output Type | Active-high push-pull; eliminates need for external pullup resistor and directly drives standard μP reset pins. |
| Reset Output Validity | Guaranteed down to VCC = 1V; maintains correct logic state even as supply collapses, preventing spurious release. |
| Package | 3-pin SC70 (X3+2 outline); occupies <0.8 mm² PCB area, suitable for ultra-compact portable designs. |
Pinout & Package
MAX6382XR44D2+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with thermal resistance θJA = 340.4°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high when VCC < 4.38V or during timeout; sinks/source current per spec. |
| 2 | VCC | Main supply input and monitored voltage source; accepts 1.0V–5.5V; powers internal circuitry and reference. |
| 3 | GND | Analog/digital ground reference; must be low-impedance connection to minimize noise coupling into reset comparator. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.38V with ±2.5% tolerance over full temperature range-eliminates external resistor networks and calibration. |
| Ultra-low quiescent current | 3μA at 1.8V enables >10-year battery life in coin-cell–powered IoT sensors and wearables. |
| Push-pull active-high output | Directly interfaces with ARM Cortex-M, PIC, and STM32 reset pins without pullup resistors or level shifters. |
| Negative-going transient immunity | Rejects sub-10µs VCC glitches up to 100mV below threshold-reduces false resets in electrically noisy environments. |
| Valid reset down to VCC = 1V | Ensures reset remains asserted until supply fully collapses-critical for fail-safe shutdown in industrial controllers. |
Applications
| Industrial PLC I/O Modules | Medical Infusion Pumps |
|---|---|
|
Use Scenario: Monitoring 5V system rail during AC line sags or backup battery switchover. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to halt microcontroller execution until stable 5V is restored. Use Value: 20ms timeout prevents premature firmware boot; ±2.5% threshold accuracy ensures consistent trip point across temperature extremes. |
Use Scenario: Ensuring safe power-on sequence for motor control and sensor acquisition subsystems. IC Role / Device Role / Timing Role: Generating clean active-high reset pulse to initialize safety-critical MCU upon 3.3V rail stabilization. Use Value: Push-pull output eliminates external components; 3μA supply current extends disposable battery life. |
| Automotive Body Control Units | Portable Test Equipment |
|
Use Scenario: Detecting brownout on 5V domain powering CAN transceivers and LIN gateways. IC Role / Device Role / Timing Role: Active-high reset generator with guaranteed validity down to 1V supply-prevents partial initialization during cranking. Use Value: SC70-3 footprint saves space in dense BCM layouts; AEC-Q100 qualified versions available (e.g., /V suffix). |
Use Scenario: Power sequencing in handheld oscilloscopes and multimeters with dual 3.3V/1.8V rails. IC Role / Device Role / Timing Role: Reset supervisor for main application processor, triggered by 3.3V rail collapse. Use Value: 4.38V threshold matches common 5V-to-3.3V LDO dropout margin; 20ms timeout aligns with typical FPGA configuration time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6382XR44D3+T | Same 4.38V threshold but 140ms reset timeout instead of 20ms. | Suitable where longer reset hold time is required for complex SoC initialization. | Select when firmware boot sequence exceeds 20ms; otherwise MAX6382XR44D2+T minimizes unnecessary delay. |
| MAX6326XR44D2+T | Pin-compatible alternative with identical 4.38V/20ms specs but higher 10μA ICC at 1.8V. | Acceptable where ultra-low power is not critical but legacy qualification is preferred. | Choose MAX6382XR44D2+T for battery-sensitive designs; MAX6326XR44D2+T only if existing design validation mandates it. |
Compared with MAX6382XR44D3+T, the MAX6382XR44D2+T reduces reset assertion time by 86%, enabling faster system recovery; versus MAX6326XR44D2+T, it cuts supply current by 70% at 1.8V-directly extending battery runtime in portable devices.
Availability
MAX6382XR44D2+T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical infusion pumps, automotive body control units, and portable test equipment requiring stable component supply and long-term lifecycle support.
Supply support for MAX6382XR44D2+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 medical applications, emphasizing low power, high reliability, and small form factor.
The MAX6381–MAX6390 family delivers single/dual-voltage microprocessor supervisory circuits optimized for low-voltage, low-power embedded systems-specifically targeting applications where space, battery life, and robust reset behavior are critical.
FAQ
What is the exact reset threshold voltage of the MAX6382XR44D2+T?
The MAX6382XR44D2+T has a factory-set nominal reset threshold of 4.38V, 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 and applies specifically to the "44" suffix in the part number.
Does the MAX6382XR44D2+T support manual reset functionality?
No, the MAX6382XR44D2+T does not include a manual reset (MR) input. Manual reset capability is only present in MAX6384/MAX6385/MAX6386 and MAX6390 variants. The MAX6382XR44D2+T is a basic single-supply supervisor with VCC monitoring only.
What package type and footprint does the MAX6382XR44D2+T use?
The MAX6382XR44D2+T is supplied in a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), designated by package code X3+2. It measures 1.25mm × 0.8mm with 0.65mm pitch, and requires no thermal pad or special layout considerations beyond standard SC70 guidelines.
Can the MAX6382XR44D2+T operate reliably at VCC = 1.2V?
Yes, the MAX6382XR44D2+T is fully specified to operate down to VCC = 1.0V, and its reset output remains valid and correctly asserted/deasserted across this entire range. At 1.2V, supply current is approximately 4μA, and reset threshold accuracy remains within ±2.5%.
Is the MAX6382XR44D2+T pin-compatible with older Maxim reset ICs like MAX809?
Yes, the MAX6382XR44D2+T is explicitly listed as pin-compatible with MAX809/MAX810/MAX803 and other legacy supervisors in the Features section of the datasheet. Its 3-pin SC70 pinout (RESET, VCC, GND) matches these devices, enabling drop-in replacement in existing designs.
MAX6382XR44D2+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:
- Active
- 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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6382XR44D2+T FAQ
1.How can I place an order for MAX6382XR44D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR44D2+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 MAX6382XR44D2+T reliable?
The price and inventory of MAX6382XR44D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR44D2+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR44D2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR44D2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR44D2+T?
MAX6382XR44D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR44D2+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 MAX6382XR44D2+T?
For technical support, including MAX6382XR44D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR44D2+T requirements.
6.How does Aetrix verify that MAX6382XR44D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR44D2+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 MAX6382XR44D2+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR44D2+T?
All MAX6382XR44D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR44D2+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 MAX6382XR44D2+T part is unused and in its original packaging.
Return procedure for MAX6382XR44D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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