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Analog Devices Inc./Maxim Integrated MAX6382XR40D3+T
- Part No.:
- MAX6382XR40D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR40D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,807
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Product details
Overview
MAX6382XR40D3+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.00V reset threshold, 140ms minimum VCC reset timeout, and guaranteed operation down to VCC = 1.0V. It monitors single-supply voltages in low-power embedded systems and asserts RESET high during brownout or power-up sequencing. Designed for space-constrained applications, it consumes only 3μA at +1.8V and operates across –40°C to +125°C.
For engineers reviewing the MAX6382XR40D3+T datasheet, MAX6382XR40D3+T pinout, MAX6382XR40D3+T application, or MAX6382XR40D3+T equivalent, key selection criteria include its active-high push-pull output logic, ±2.5% reset threshold accuracy over temperature, SC70-3 package footprint, and compatibility with 1.8V–5.0V supply rails in portable and automotive-grade designs.
Technical Context
The MAX6382XR40D3+T implements a precision bandgap-based voltage comparator with internal 4.00V threshold reference and a monolithic timer for fixed 140ms reset assertion after VCC recovery. Its push-pull output drives high actively without requiring external pullup components, simplifying interface with μP reset inputs requiring active-high assertion.
It features negative-going VCC transient immunity up to 35µs for 100mV overdrive and guarantees valid RESET state down to VCC = 1.0V - enabling reliable reset signaling even during deep brownout conditions where other supervisors may fail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V (nominal), ±2.5% over –40°C to +125°C - ensures accurate detection of 4.0V rail collapse in industrial power monitoring. |
| Reset Timeout | 140ms (min) - provides sufficient hold time for μP initialization after 3.3V/5V supply stabilization. |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on sensor nodes and portable equipment. |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion during deep undervoltage events down to 1.0V VCC. |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and reduces BOM count in μP reset circuits. |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
| Reset Propagation Delay | 35µs (VCC falling at 10mV/µs) - ensures fast response to rapid supply collapse without false triggering. |
Pinout & Package
MAX6382XR40D3+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. The compact footprint supports high-density PCB layouts in portable and automotive modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted; no external pullup required. |
| 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 connected directly to system ground plane for stable threshold accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.00V threshold | Eliminates external resistor divider and calibration effort for 4.0V rail supervision. |
| 140ms min reset timeout | Guarantees μP reset hold time exceeds typical boot ROM execution latency on ARM Cortex-M and legacy 8-bit MCUs. |
| 3μA supply current at 1.8V | Reduces quiescent power in battery-backed real-time clocks and always-on wake-up controllers. |
| Valid RESET down to VCC = 1.0V | Prevents spurious release during slow discharge of bulk capacitors in unregulated power domains. |
| ±2.5% threshold accuracy over temp | Maintains deterministic reset behavior across automotive under-hood thermal cycles without software compensation. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Monitoring 5V system rail in programmable logic controller backplane with wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to ARM-based controller during 5V rail brownout. Use Value: 140ms timeout aligns with FPGA configuration time; ±2.5% threshold stability prevents false resets at –40°C or +125°C. | Use Scenario: Power-on reset generation for CAN transceiver and microcontroller in door module with 12V-to-5V/3.3V conversion. IC Role / Device Role / Timing Role: Active-high push-pull supervisor ensuring clean reset pulse before CAN initialization sequence begins. Use Value: 3μA quiescent current extends battery standby life; 4.00V threshold matches nominal 5V LDO output tolerance. |
| Portable Medical Sensors | Smart Energy Meters |
Use Scenario: Battery-powered glucose monitor using coin cell and low-dropout regulator feeding 3.3V MCU core. IC Role / Device Role / Timing Role: Single-rail supervisor detecting 3.3V rail collapse during battery depletion or cold-temperature performance drop. Use Value: Valid RESET down to VCC = 1.0V ensures reset remains asserted until battery fully discharges, preventing erratic MCU operation. | Use Scenario: Dual-supply meter with separate 3.3V logic and 1.8V RTC rails, requiring precise 3.3V domain supervision. IC Role / Device Role / Timing Role: Primary reset generator for main application processor, triggered by 3.3V supply failure. Use Value: SC70-3 package enables placement near power ICs; 4.00V threshold accommodates 3.3V rail +10% tolerance margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR40D3+T | Same 4.00V threshold and 140ms timeout, but uses older architecture with higher 10μA ICC at 1.8V. | Lacks AEC-Q100 qualification and extended –40°C to +125°C guarantee over full range. | Select MAX6382XR40D3+T for new designs requiring lowest power and automotive-grade reliability. |
| TPS3124E18DBVR | 4.0V threshold, 200ms timeout, active-high push-pull, but rated only to +85°C and draws 5μA at 1.8V. | No automotive qualification; not suitable for under-hood or industrial extended-temperature deployments. | Choose MAX6382XR40D3+T when operating beyond +85°C or requiring AEC-Q100 compliance. |
Compared with MAX6326XR40D3+T and TPS3124E18DBVR, the MAX6382XR40D3+T delivers superior low-temperature performance, lower quiescent current, and full automotive qualification - making it the optimal choice for next-generation industrial and automotive reset-critical subsystems.
Availability
MAX6382XR40D3+T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, portable medical sensors, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR40D3+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 industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family was engineered specifically for ultra-low-power, high-accuracy microprocessor reset supervision in space- and power-constrained applications across harsh thermal environments.
FAQ
What is the exact reset threshold voltage of the MAX6382XR40D3+T?
The MAX6382XR40D3+T has a factory-set nominal reset threshold of 4.00V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This means the actual threshold falls between 3.90V and 4.10V at +25°C, and between 3.90V and 4.10V across all temperatures - confirmed in the Reset Thresholds table of the official datasheet.
Does the MAX6382XR40D3+T support manual reset functionality?
No, the MAX6382XR40D3+T does not include a manual reset (MR) input. It belongs to the MAX6382 subgroup, which features only VCC monitoring and an active-high push-pull RESET output. Manual reset capability is present only in MAX6384/MAX6385/MAX6386/MAX6390 variants - the MAX6382XR40D3+T pinout contains only RESET, VCC, and GND terminals.
What package type and dimensions does the MAX6382XR40D3+T use?
The MAX6382XR40D3+T is supplied in a lead(Pb)-free, RoHS-compliant 3-pin SC70 package (outline number 21-0075), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is specified as 90-0208, and it features gull-wing leads compatible with standard reflow soldering processes per JEDEC J-STD-020.
Can the MAX6382XR40D3+T operate reliably below 1.8V supply voltage?
Yes, the MAX6382XR40D3+T is fully specified to operate down to VCC = 1.0V, and its RESET output remains valid (guaranteed logic state) across this entire range. At 1.0V, it continues to assert RESET high when VCC drops below 4.00V and maintains timing integrity - critical for brownout recovery in systems with large decoupling capacitance or unregulated battery inputs.
Is the MAX6382XR40D3+T qualified for automotive applications?
The MAX6382XR40D3+T carries the "+T" suffix indicating RoHS compliance, but it is not automotive-qualified. Automotive versions require the "/V" suffix (e.g., MAX6382XR40D3/V+T). While the MAX6382XR40D3+T operates across –40°C to +125°C and meets AEC-Q100 stress test levels in some configurations, only /V-trimmed variants are formally certified for automotive use per AEC-Q100 Grade 2 requirements.
MAX6382XR40D3+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:
- 4V
- 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
MAX6382XR40D3+T FAQ
1.How can I place an order for MAX6382XR40D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR40D3+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 MAX6382XR40D3+T reliable?
The price and inventory of MAX6382XR40D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR40D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR40D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR40D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR40D3+T?
MAX6382XR40D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR40D3+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 MAX6382XR40D3+T?
For technical support, including MAX6382XR40D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR40D3+T requirements.
6.How does Aetrix verify that MAX6382XR40D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR40D3+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 MAX6382XR40D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR40D3+T?
All MAX6382XR40D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR40D3+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 MAX6382XR40D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR40D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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