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Analog Devices Inc./Maxim Integrated MAX6382XR22D3+T
- Part No.:
- MAX6382XR22D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR22D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,401
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Product details
Overview
MAX6382XR22D3+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 2.19V reset threshold, 140ms minimum VCC reset timeout, ±2.5% threshold accuracy over -40°C to +125°C, and 3μA supply current at +1.8V. It monitors single-supply voltage in battery-powered embedded controllers and ensures reliable power-on reset for critical μP systems.
For engineers reviewing the MAX6382XR22D3+T datasheet, MAX6382XR22D3+T pinout, MAX6382XR22D3+T application, or MAX6382XR22D3+T equivalent, key selection criteria include active-high push-pull output logic, guaranteed valid reset state down to VCC = 1V, SC70-3 package compatibility, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6382XR22D3+T implements a precision bandgap-based voltage comparator with internal 2.19V reference and a monostable timeout timer. Reset asserts when VCC falls below 2.19V and remains asserted for ≥140ms after VCC rises above threshold.
No manual reset (MR) or auxiliary RESET IN inputs are present - this variant is optimized for simple single-rail monitoring. Its push-pull active-high output drives directly into μP reset inputs without external pullup, supporting logic-level compatibility across 1.0V–5.5V VCC operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.19V (factory-set, ±2.5% over -40°C to +125°C) - ensures accurate brownout detection for 2.2V nominal rails |
| VCC Operating Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout or low-battery conditions |
| Reset Timeout Period | 140ms minimum - provides sufficient hold time for μP initialization and clock stabilization |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in portable instrumentation and IoT edge nodes |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct connection to μP reset pins |
| Reset Propagation Delay | 35µs (VCC falling at 10mV/µs) - ensures fast response to rapid supply collapse |
| Operating Temperature | -40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
MAX6382XR22D3+T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, RoHS-compliant and lead-free.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - drives high during normal operation; pulls low only during reset assertion |
| 2 | VCC | Main supply input and monitored rail - powers internal circuitry and serves as primary reset trigger source |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane for stable threshold accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.19V with ±2.5% tolerance over full temperature range - eliminates external resistor network and calibration effort |
| Guaranteed reset validity down to VCC = 1V | Ensures deterministic reset behavior during ultra-low-voltage brownout, preventing spurious μP execution |
| Negative-going transient immunity | Rejects VCC glitches ≤35µs wide at 100mV overdrive - improves robustness in electrically noisy environments |
| Low quiescent current | 3μA at 1.8V - reduces standby power in always-on sensor nodes and wearables |
| SC70-3 footprint | 2.0mm × 2.1mm area - enables compact placement on space-constrained PCBs without thermal derating penalties |
Applications
| Industrial PLC Controller Power Monitoring | Battery-Powered Handheld Meter |
|---|---|
Use Scenario: Monitors 2.2V I/O rail in programmable logic controller modules operating in factory-floor environments with variable input voltage and EMI. IC Role / Device Role / Timing Role: Single-rail supervisor providing active-high reset signal to ARM Cortex-M4 microcontroller during brownout events. Use Value: 2.19V threshold matches nominal 2.2V rail with margin; 140ms timeout exceeds μP boot sequence requirement; SC70-3 eases layout in dense control module. |
Use Scenario: Ensures reliable startup of ultra-low-power MSP430-based multimeter powered by two AA cells (1.8V–3.2V range). IC Role / Device Role / Timing Role: Primary VCC monitor asserting reset until regulated 2.2V supply stabilizes post-power-on. Use Value: 3μA supply current extends battery life beyond 5 years in sleep mode; ±2.5% threshold accuracy maintains trip point across temperature swings. |
| Automotive Body Control Module | Medical Point-of-Care Sensor Node |
Use Scenario: Supervises 2.2V domain in AEC-Q100-compliant body control unit exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Dedicated reset generator for safety-critical CAN interface MCU, triggered solely by VCC drop. Use Value: Valid operation down to VCC = 1V prevents false release during cold-crank dips; 35µs glitch rejection suppresses noise-induced resets. |
Use Scenario: Powers-on clinical-grade pulse oximeter using coin-cell battery and requiring fail-safe initialization before analog front-end activation. IC Role / Device Role / Timing Role: Enables deterministic μP reset prior to ADC calibration and optical driver enable. Use Value: Active-high push-pull output interfaces directly with reset pin of medical-grade ARM microcontroller; 140ms timeout accommodates slow LDO settling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR22D3+T | Same 2.19V threshold and 140ms timeout, but uses older BiCMOS process; higher ICC (5μA at 1.8V) | Lacks negative-transient immunity spec; not AEC-Q100 qualified | Select when legacy qualification suffices and cost sensitivity outweighs 2μA current savings |
| TPS3123E18DBVR | 2.18V threshold, 200ms timeout, 1.8V min VCC, 0.8μA ICC - lower current but longer timeout and tighter VCC min | Requires external capacitor for timeout tuning; no guaranteed reset validity below 1.8V | Prefer for ultra-low-power designs where extended timeout is acceptable and VCC never drops below 1.8V |
Compared with MAX6382XR22D3+T, MAX6326XR22D3+T trades 2μA higher quiescent current for broader legacy support, while TPS3123E18DBVR offers deeper sub-1.8V operation but sacrifices guaranteed reset behavior below 1.8V and adds design complexity via external timing components.
Availability
MAX6382XR22D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered handheld meters, automotive body control modules, and medical point-of-care sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR22D3+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 AEC-Q100 qualification.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-powered and thermally constrained systems where guaranteed reset behavior, minimal current draw, and small-footprint packaging are essential.
FAQ
What is the exact reset threshold voltage of MAX6382XR22D3+T?
The MAX6382XR22D3+T has a factory-set reset threshold of 2.19V, with ±2.5% accuracy over the full operating temperature range (-40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet (suffix "22" corresponds to 2.19V nominal), and applies specifically to the MAX6382 variant with XR prefix and D3 timeout.
Does MAX6382XR22D3+T support manual reset functionality?
No, MAX6382XR22D3+T does not include a manual reset (MR) input. It is a dedicated single-rail supervisor with only VCC monitoring and active-high push-pull RESET output. Manual reset capability is available only in MAX6384/MAX6385/MAX6386/MAX6390 variants, as clearly indicated in the Selector Guide and Pin Description sections.
What package type and dimensions does MAX6382XR22D3+T use?
MAX6382XR22D3+T is supplied in a 3-pin SC70 package (outline number 21-0075), measuring 2.0mm × 2.1mm × 0.95mm. The land pattern is specified as 90-0208, and the device is RoHS-compliant (+ suffix). This package is distinct from the 4-pin SC70 and 6-pin µDFN used by other members of the MAX6381–MAX6390 family.
Can MAX6382XR22D3+T operate reliably below 1.8V supply?
Yes, MAX6382XR22D3+T is fully specified down to VCC = 1.0V, with guaranteed reset output validity (correct logic state) at all voltages ≥1.0V. At 1.8V, its supply current is 3μA; at 1.0V, it remains functional though current drops further. Operation below 1.0V is outside specification and not supported.
Is MAX6382XR22D3+T pin-compatible with MAX809 or MAX810?
No, MAX6382XR22D3+T is not pin-compatible with MAX809/MAX810. While both families offer 3-pin SC70 supervisors, MAX809/MAX810 use different pinouts (VCC–GND–RESET vs. RESET–VCC–GND for MAX6382XR22D3+T) and differ in output polarity (active-low vs. active-high). Direct replacement requires PCB layout revision.
MAX6382XR22D3+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:
- 2.19V
- 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
MAX6382XR22D3+T FAQ
1.How can I place an order for MAX6382XR22D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR22D3+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 MAX6382XR22D3+T reliable?
The price and inventory of MAX6382XR22D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR22D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR22D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR22D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR22D3+T?
MAX6382XR22D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR22D3+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 MAX6382XR22D3+T?
For technical support, including MAX6382XR22D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR22D3+T requirements.
6.How does Aetrix verify that MAX6382XR22D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR22D3+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 MAX6382XR22D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR22D3+T?
All MAX6382XR22D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR22D3+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 MAX6382XR22D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR22D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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