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Analog Devices Inc./Maxim Integrated MAX6382XR23D3+T
- Part No.:
- MAX6382XR23D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR23D3+T.pdf
- Description:
- IC MPU/RESET CIRC 2.31V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:17,500
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Product details
Overview
MAX6382XR23D3+T from Maxim Integrated is a precision active-high push-pull μP supervisory circuit designed to monitor +2.31V supply voltage with 140ms minimum reset timeout. It consumes only 3μA at +1.8V, guarantees valid reset output down to VCC = 1V, and operates across -40°C to +125°C for industrial and automotive power-up/brownout protection in microcontroller-based systems.
For engineers reviewing the MAX6382XR23D3+T datasheet, MAX6382XR23D3+T pinout, MAX6382XR23D3+T application, or MAX6382XR23D3+T equivalent, key selection criteria include factory-trimmed ±2.5% threshold accuracy over temperature, immunity to negative-going VCC transients, and compatibility with low-voltage embedded systems requiring guaranteed reset assertion during supply ramp-up and fault conditions.
Technical Context
The MAX6382XR23D3+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 enforces a fixed 140ms (min) reset timeout after VCC rises above the 2.31V threshold.
This device features an active-high push-pull RESET output that drives high during fault conditions and deasserts cleanly upon recovery, eliminating need for external pullup. It lacks manual reset (MR) or auxiliary RESET IN inputs-functions reserved for other family members like MAX6384 or MAX6387.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V nominal, ±2.5% over -40°C to +125°C - ensures reliable detection of +2.3V rail brownout without false triggers |
| Reset Timeout | 140ms minimum - holds processor in reset long enough for stable clock and memory initialization |
| Supply Current | 3μA at +1.8V - enables use in always-on battery-backed monitoring circuits |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion even during deep brownout down to 1V VCC |
| Output Type | Active-high push-pull - provides rail-to-rail logic levels without external components |
| Temp Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Reset Propagation Delay | 35μs max - responds rapidly to VCC falling edge at 10mV/µs slew rate |
Pinout & Package
MAX6382XR23D3+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075), footprint-compatible with industry-standard low-power supervisory ICs. Pin 1 is RESET (active-high push-pull), Pin 2 is VCC, and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high during reset condition and low otherwise; 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 noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 2.31V threshold | Eliminates external resistor divider; reduces BOM count and layout area in space-constrained designs |
| 140ms minimum reset timeout | Guarantees sufficient hold time for slow-ramping supplies and peripheral initialization sequences |
| 3μA supply current at 1.8V | Enables multi-year operation on coin-cell batteries in maintenance-free sensor nodes |
| ±2.5% threshold accuracy over temp | Ensures consistent brownout detection across full industrial temperature range without calibration |
| Valid reset down to VCC = 1V | Maintains deterministic behavior during severe undervoltage events before complete power collapse |
Applications
| Industrial PLC Power Monitoring | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 2.3V I/O supply rail in programmable logic controller backplane during cold cranking and load dump events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 MCU until rail stabilizes above 2.31V for ≥140ms. Use Value: Prevents firmware execution errors caused by marginal voltage during engine start-up transients. | Use Scenario: Embedded in door module ECU to supervise 2.3V CAN transceiver supply during vehicle ignition cycle. IC Role / Device Role / Timing Role: Generates clean active-high reset pulse to Infineon AURIX TC3xx microcontroller after 2.3V rail reaches regulation. Use Value: Ensures deterministic boot sequence despite 100ms+ battery sag during starter motor engagement. |
| Medical Patient Monitor Sensor Node | Smart Energy Meter MCU Supervision |
Use Scenario: Powers ultra-low-power analog front-end and BLE radio in portable vital signs patch using 2.3V LDO output. IC Role / Device Role / Timing Role: Active-high push-pull RESET output held high until 2.3V rail settles, then released after 140ms timeout. Use Value: Guarantees ADC and RF subsystems initialize only after stable bias conditions are achieved. | Use Scenario: Supervises 2.3V microcontroller core supply in ANSI C12.22-compliant electricity meter exposed to grid voltage sags. IC Role / Device Role / Timing Role: Detects drop below 2.31V threshold and asserts active-high reset for 140ms minimum to prevent flash corruption. Use Value: Meets IEC 61000-4-11 immunity requirements for 10-cycle dips at 40% voltage reduction. |
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 | 2.32V threshold, 140ms timeout, same 3-pin SC70 package, but higher 12μA ICC at 1.8V | Lacks AEC-Q100 qualification; not recommended for automotive under-hood use | Select when cost sensitivity outweighs ultra-low power requirement and automotive qualification is unnecessary |
| TPS3808G33DBVR | 3.3V threshold (not 2.31V); adjustable via external resistor; 200ms default timeout; SOT-23-5 package | Requires external components for 2.3V operation; larger footprint; higher quiescent current (1.1μA typical) | Choose only if design requires field-adjustable threshold or dual-supply monitoring capability |
Compared with MAX809TRD3+T and TPS3808G33DBVR, MAX6382XR23D3+T delivers superior low-power performance (3μA vs. 12μA/1.1μA), precise factory-trimmed 2.31V detection without external components, and AEC-Q100 qualification-making it optimal for space- and power-constrained automotive and industrial applications demanding deterministic reset timing.
Availability
MAX6382XR23D3+T is available at Aetrix Electronics and suitable for industrial PLC power monitoring, automotive body control modules, medical sensor nodes, smart energy meters, and battery-powered IoT edge devices requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6382XR23D3+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 delivers ultra-low-power, high-accuracy μP supervisory circuits optimized for reliable power-up sequencing and brownout protection in harsh-environment embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6382XR23D3+T?
The MAX6382XR23D3+T has a factory-trimmed nominal reset threshold of 2.31V, 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 "23" corresponds to min/typ/max values of 2.26V/2.31V/2.37V.
Does MAX6382XR23D3+T include a manual reset input (MR)?
No, MAX6382XR23D3+T does not feature a manual reset input. The MR function is present only on MAX6384/MAX6385/MAX6386/MAX6390 variants. MAX6382XR23D3+T is a dedicated VCC-monitoring device with no MR pin-its pinout consists solely of RESET, VCC, and GND in the 3-pin SC70 package.
What is the reset timeout period for MAX6382XR23D3+T?
The MAX6382XR23D3+T provides a fixed minimum reset timeout period of 140ms, as indicated by the "D3" suffix in its part number. This timeout begins when VCC rises above the 2.31V threshold and ensures the reset signal remains asserted long enough for microcontroller and peripheral initialization.
Is MAX6382XR23D3+T compatible with AEC-Q100 automotive standards?
Yes, MAX6382XR23D3+T is AEC-Q100 qualified. The datasheet explicitly states AEC-Q100 qualification for the MAX6381–MAX6390 family, and the "/V" suffix denotes automotive-grade versions-but MAX6382XR23D3+T itself carries the "+" suffix indicating RoHS compliance and is manufactured to AEC-Q100 stress test requirements per the family specification.
What package type and footprint does MAX6382XR23D3+T use?
MAX6382XR23D3+T uses a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208). It shares pin compatibility with industry-standard low-power supervisors like MAX809/MAX810 and occupies minimal PCB area-ideal for compact portable and automotive modules.
MAX6382XR23D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.31V
- 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
MAX6382XR23D3+T FAQ
1.How can I place an order for MAX6382XR23D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR23D3+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 MAX6382XR23D3+T reliable?
The price and inventory of MAX6382XR23D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR23D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR23D3+T?
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4.How is shipping managed for MAX6382XR23D3+T?
MAX6382XR23D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR23D3+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 MAX6382XR23D3+T?
For technical support, including MAX6382XR23D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR23D3+T requirements.
6.How does Aetrix verify that MAX6382XR23D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR23D3+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 MAX6382XR23D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR23D3+T?
All MAX6382XR23D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR23D3+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 MAX6382XR23D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR23D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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