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Analog Devices Inc./Maxim Integrated MAX6382XR26D3+
- Part No.:
- MAX6382XR26D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR26D3+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:9,065
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Product details
Overview
MAX6382XR26D3+ from Maxim Integrated is a precision active-high push-pull μP reset supervisor IC designed for low-voltage power monitoring in embedded systems. It features a factory-set 2.63V ±2.5% reset threshold, 140ms minimum reset timeout, 3μA supply current at +1.8V, and guaranteed valid reset output down to VCC = 1V. It is used in battery-powered microcontroller applications requiring reliable brownout detection and clean power-up sequencing.
For engineers reviewing the MAX6382XR26D3+ datasheet, MAX6382XR26D3+ pinout, MAX6382XR26D3+ application, or MAX6382XR26D3+ equivalent, key selection criteria include reset threshold accuracy over temperature (±2.5% from –40°C to +125°C), active-high push-pull drive capability, SC70-3 package footprint, and compatibility with 1.8V–5.0V supply rails.
Technical Context
The MAX6382XR26D3+ implements a precision bandgap-based voltage comparator with internal hysteresis to monitor VCC against a fixed 2.63V threshold. Upon VCC falling below this level, it asserts an active-high RESET signal via push-pull output and holds it for ≥140ms after VCC recovers above threshold.
No manual reset (MR) input or auxiliary RESET IN is present - this variant belongs to the MAX6382 subgroup, which is defined as a 3-pin SC70 device with active-high push-pull output only and no additional control inputs. Its operating range spans 1.0V to 5.5V, and reset state validity is guaranteed down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±2.5% over –40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges |
| Reset Timeout | 140ms minimum - provides sufficient hold time for microcontroller initialization and peripheral stabilization |
| Supply Current | 3μA at +1.8V - enables ultra-low-power operation in always-on battery-backed systems |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct connection to CMOS/TTL reset inputs |
| Operating Voltage | 1.0V to 5.5V - supports wide supply range including 1.8V, 2.5V, 3.3V, and 5.0V logic domains |
| Reset Validity | Guaranteed down to VCC = 1V - ensures deterministic reset assertion during deep brownout or rapid power collapse |
| Package | 3-pin SC70 (X3+2 outline) - compact 1.25mm × 0.85mm footprint ideal for space-constrained portable designs |
Pinout & Package
MAX6382XR26D3+ is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208). The device has no internal connections on pins beyond the three functional terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted; compatible with standard μP reset inputs |
| 2 | VCC | Main supply input - powers internal circuitry and serves as monitored voltage rail; accepts 1.0V–5.5V |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane for stable comparator operation and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±2.5% tolerance over full temperature range - eliminates external resistor divider and calibration effort |
| Ultra-low quiescent current | 3μA at 1.8V - extends battery life in coin-cell or energy-harvesting applications |
| Push-pull active-high output | Direct-drive capability without pullup - reduces BOM count and PCB area vs. open-drain alternatives |
| Valid reset down to 1V VCC | Ensures fail-safe behavior during severe undervoltage - prevents spurious release before power stabilizes |
| Negative-going transient immunity | Rejects short VCC glitches (e.g., <1µs at 100mV overdrive) - improves robustness in noisy power environments |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG sensor powered by single Li-ion cell with dynamic voltage sag during RF transmission. IC Role / Device Role / Timing Role: Monitors core supply (1.8V LDO output) and asserts active-high RESET to MSP430F5xx MCU upon drop below 2.63V. Use Value: Prevents firmware corruption during battery dip; 140ms timeout allows ADC and BLE subsystems to fully reinitialize. | Use Scenario: DIN-rail mounted digital input module exposed to 24V DC field supply with ripple and load-switch transients. IC Role / Device Role / Timing Role: Supervises isolated 3.3V logic rail feeding ARM Cortex-M4 microcontroller and SPI isolators. Use Value: 2.63V threshold matches 3.3V rail margin; ±2.5% accuracy ensures consistent trip point across –40°C to +85°C ambient. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: BCM sub-module powered from vehicle battery via 5V buck converter with cold-crank voltage drop to 6V. IC Role / Device Role / Timing Role: Resets S32K144 MCU when 5V rail falls below 2.63V during cranking; operates within AEC-Q100-compliant design flow. Use Value: SC70-3 package enables placement near MCU; 3μA current minimizes parasitic drain on backup capacitor. | Use Scenario: Revenue-grade meter with dual-supply architecture (3.3V MCU + 1.8V metrology ASIC) and tamper-detection circuitry. IC Role / Device Role / Timing Role: Provides primary reset for 3.3V domain; 140ms timeout accommodates slow-start LDOs and EEPROM write recovery. Use Value: Push-pull output avoids contention with other reset sources; guaranteed 1V operation prevents false release during capacitor discharge. |
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 | 2.93V reset threshold, same 3-pin SC70 package, 140ms timeout, but ±3% threshold accuracy over temperature | Higher threshold suits 3.3V systems; less precise for 2.5V/1.8V rails where tighter margin is required | Select when 2.93V trip point aligns with system VCC margin and ±3% accuracy suffices |
| TPS3808G125DBVR | 1.25V threshold, adjustable via external resistor, 200ms default timeout, SOT-23-5 package with MR input | Requires external components and layout space; MR support adds flexibility but increases complexity | Choose when programmable threshold or manual reset functionality is mandatory |
Compared with MAX809TRD3+T, MAX6382XR26D3+ offers tighter threshold accuracy (±2.5% vs. ±3%) critical for low-voltage rails; compared with TPS3808G125DBVR, it delivers simpler integration (no external resistors or MR routing) at the cost of fixed threshold and no manual reset.
Availability
MAX6382XR26D3+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply and long-term lifecycle assurance.
Supply support for MAX6382XR26D3+ 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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy reset supervision for microprocessor-based systems operating from 1.8V to 5.0V, with emphasis on reliability in harsh thermal and electrical environments.
FAQ
What is the exact reset threshold voltage of MAX6382XR26D3+ and how stable is it over temperature?
The MAX6382XR26D3+ has a factory-set reset threshold of 2.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. This specification is validated per the Electrical Characteristics table in the official datasheet, and the threshold exhibits a tempco of 60ppm/°C. The value is trimmed during production and does not require external calibration.
Does MAX6382XR26D3+ support manual reset (MR) functionality?
No, MAX6382XR26D3+ does not include a manual reset input. It belongs to the MAX6382 subgroup, which is defined as a 3-pin SC70 device with active-high push-pull reset output only and no MR pin. Manual reset capability is available only in variants like MAX6384, MAX6385, MAX6386, and MAX6390 - all of which use 4-pin or 6-pin packages.
What is the minimum supply voltage at which MAX6382XR26D3+ guarantees correct reset output behavior?
MAX6382XR26D3+ guarantees valid reset output logic state down to VCC = 1.0V. Below this voltage, the internal circuitry cannot maintain specified timing or voltage levels. This feature ensures deterministic reset assertion during deep brownout conditions, unlike many supervisors that become undefined below ~1.5V.
Can MAX6382XR26D3+ be used in automotive applications?
Yes - MAX6382XR26D3+ is rated for –40°C to +125°C operation and is AEC-Q100 qualified. However, the specific part number MAX6382XR26D3+ carries the "+" suffix indicating RoHS compliance but not the "/V" automotive grade suffix. For certified automotive use, the /V version (e.g., MAX6382XR26D3/V+T) must be selected, as it undergoes additional qualification testing and screening.
What package type and dimensions does MAX6382XR26D3+ use, and is it compatible with standard reflow profiles?
MAX6382XR26D3+ uses the 3-pin SC70 package (outline 21-0075), measuring 1.25mm × 0.85mm × 0.6mm. It is RoHS-compliant ("+" suffix) and qualified for standard lead-free reflow per JEDEC J-STD-020, with peak soldering temperature up to +260°C. Land pattern 90-0208 is recommended for optimal thermal and mechanical reliability.
MAX6382XR26D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- 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
MAX6382XR26D3+ FAQ
1.How can I place an order for MAX6382XR26D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR26D3+ 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 MAX6382XR26D3+ reliable?
The price and inventory of MAX6382XR26D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR26D3+ is usually 5 days.
3.What payment methods are accepted for MAX6382XR26D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR26D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR26D3+?
MAX6382XR26D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR26D3+ 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 MAX6382XR26D3+?
For technical support, including MAX6382XR26D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR26D3+ requirements.
6.How does Aetrix verify that MAX6382XR26D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6382XR26D3+ 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 MAX6382XR26D3+ meets industry standards.
7.What is the process for return or replacement of MAX6382XR26D3+?
All MAX6382XR26D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR26D3+, 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 MAX6382XR26D3+ part is unused and in its original packaging.
Return procedure for MAX6382XR26D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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