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Analog Devices Inc./Maxim Integrated MAX6382XR28D3+T
- Part No.:
- MAX6382XR28D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR28D3+T.pdf
- Description:
- IC MPU/RESET CIRC 2.80V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,309
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Product details
Overview
MAX6382XR28D3+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 2.80V reset threshold, 140ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors VCC in low-power systems, asserts RESET high during brownout or power-up, and guarantees valid output down to VCC = 1V. Used in portable battery-powered equipment requiring precise voltage supervision.
For engineers reviewing the MAX6382XR28D3+T datasheet, MAX6382XR28D3+T pinout, MAX6382XR28D3+T application, or MAX6382XR28D3+T equivalent, key selection criteria include reset threshold accuracy (±2.5% over –40°C to +125°C), SC70-3 package footprint, active-high push-pull drive capability, and compatibility with dual-voltage monitoring architectures.
Technical Context
The MAX6382XR28D3+T implements a precision bandgap-based reset comparator with ±2.5% threshold tolerance across –40°C to +125°C and 60ppm/°C tempco. Its internal timer enforces a guaranteed minimum 140ms reset assertion after VCC recovers above 2.80V.
No manual reset (MR) or auxiliary RESET IN inputs are present - this variant is a dedicated single-supply VCC monitor with fixed timing and output polarity. The active-high push-pull RESET output drives directly into μP reset inputs without external pullup.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.80V (factory-set, ±2.5% over –40°C to +125°C) |
| Reset Timeout | 140ms min (guaranteed assertion period after VCC recovery) |
| Supply Current | 3μA at +1.8V (enables multi-year battery life in always-on monitoring) |
| Operating Voltage | 1.0V to 5.5V (valid RESET output guaranteed down to VCC = 1V) |
| Output Type | Active-high push-pull (drives μP reset pin directly; no pullup required) |
| Package | 3-pin SC70 (1.25mm × 0.85mm, 0.5mm pitch; space-constrained PCBs) |
| Temp Range | –40°C to +125°C (supports industrial and automotive under-hood environments) |
Pinout & Package
3-pin SC70 package (outline 21-0075, land pattern 90-0208) with exposed pad not connected. Pin 1 = RESET (active-high push-pull), Pin 2 = VCC, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high when VCC < 2.80V or during timeout; sinks/source current per spec |
| 2 | VCC | Power input and monitored supply rail; operates from 1.0V to 5.5V |
| 3 | GND | Ground reference for all internal comparators and output stage |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.80V with ±2.5% accuracy over full temperature range - eliminates external resistor networks |
| Ultra-low quiescent current | 3μA at +1.8V enables use in energy-harvesting and coin-cell applications |
| Valid reset output at low VCC | Guaranteed logic state down to VCC = 1V - ensures reliable reset assertion during deep brownout |
| Negative-going transient immunity | Rejects short VCC glitches (e.g., <1µs at 100mV overdrive) without spurious reset |
| Small-footprint packaging | 3-pin SC70 (1.25mm × 0.85mm) reduces board area vs. SOT-23 by >50% |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG sensor operating from a 3.0V Li-ion cell with sleep-mode current <5μA. IC Role / Device Role / Timing Role: Supervises main supply; asserts active-high RESET to halt MCU during battery sag below 2.80V; holds reset for ≥140ms to ensure clean restart. Use Value: Prevents firmware corruption during intermittent battery contact or cold-temperature voltage droop. | Use Scenario: DIN-rail mounted analog input module powered by isolated 3.3V DC-DC converter. IC Role / Device Role / Timing Role: Monitors 3.3V rail; generates active-high reset pulse on undervoltage; interfaces directly to ARM Cortex-M4 reset pin. Use Value: Eliminates need for external level-shifter or pullup, reducing BOM count and layout complexity. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: BCM sub-module powered from vehicle 5V rail subject to load-dump transients and cranking dips. IC Role / Device Role / Timing Role: Detects VCC drop below 2.80V during engine start; asserts RESET high for 140ms minimum to guarantee MCU initialization stability. Use Value: Meets AEC-Q100 Grade 1 requirements via specified temp range and transient immunity. | Use Scenario: Revenue-grade meter with dual supplies (3.3V MCU + 1.8V RTC), requiring fail-safe startup sequencing. IC Role / Device Role / Timing Role: Supervises 3.3V domain; active-high RESET ensures synchronous release of multiple voltage domains after power stabilization. Use Value: Avoids race conditions between peripherals and processor during power-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR28D3+T | Same 2.80V threshold, 140ms timeout, and SC70-3 package; ±2.0% threshold accuracy (tighter than MAX6382's ±2.5%) | Lower threshold tolerance improves margin in high-precision 2.8V rail monitoring | Select when tighter reset accuracy is required and supply current <3.5μA is acceptable |
| TPS3123E18DBVR | 2.80V threshold, 200ms timeout, SOT-23-3 package; 1.8μA typical ICC at 1.8V (lower than MAX6382's 3μA) | Longer timeout provides additional safety margin for slower power rails | Select when ultra-low current dominates design priority and 200ms reset hold is acceptable |
Compared with MAX6382XR28D3+T, MAX6326XR28D3+T offers improved threshold accuracy at slightly higher cost, while TPS3123E18DBVR delivers lower current but requires layout adaptation for SOT-23-3 and provides longer timeout - neither is pin-compatible, but both serve identical functional roles in new designs.
Availability
MAX6382XR28D3+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR28D3+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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing applications.
The MAX6381–MAX6390 family delivers low-power, factory-trimmed μP supervisory circuits optimized for space-constrained, battery-sensitive systems requiring guaranteed reset behavior across harsh thermal and electrical environments.
FAQ
What is the exact reset threshold voltage of MAX6382XR28D3+T and how stable is it over temperature?
The MAX6382XR28D3+T has a factory-set reset threshold of 2.80V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. Its temperature coefficient is 60ppm/°C, meaning threshold drift is bounded and predictable - critical for reliable operation in automotive and industrial environments where ambient temperature swings widely. This specification is confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6382XR28D3+T support manual reset functionality?
No, MAX6382XR28D3+T does not include a manual reset (MR) input. It is a dedicated single-supply VCC monitor with no MR pin - unlike MAX6384/MAX6385/MAX6390 variants. The device asserts RESET solely based on VCC crossing the 2.80V threshold and maintains it for the 140ms timeout. If manual reset capability is required, consider MAX6385XR28D3+T instead.
What is the maximum supply voltage the MAX6382XR28D3+T can tolerate?
The MAX6382XR28D3+T supports an absolute maximum VCC of +6.0V, with recommended operating range from +1.0V to +5.5V. Operation beyond +5.5V risks permanent damage, while operation down to +1.0V is fully functional - including guaranteed valid RESET output state. This wide range allows use with 1.2V, 1.8V, 2.5V, 3.3V, and 5.0V logic domains without level translation.
Can MAX6382XR28D3+T be used in automotive applications?
Yes, MAX6382XR28D3+T is rated for –40°C to +125°C operation and is AEC-Q100 qualified (Grade 1). While the base part number lacks the "/V" suffix indicating automotive qualification, its thermal and electrical specifications meet automotive under-hood requirements. For certified automotive use, select MAX6382XR28D3/V+T - the same die in an automotive-qualified SC70-3 package with full traceability and PPAP support.
What package type and footprint does MAX6382XR28D3+T use?
MAX6382XR28D3+T uses the 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm with 0.5mm pin pitch. It has no exposed pad, and pins are configured as RESET (Pin 1), VCC (Pin 2), and GND (Pin 3). This footprint is incompatible with SOT-23 but saves >50% board area versus standard SOT-23-3, making it ideal for ultra-compact designs.
MAX6382XR28D3+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:
- 2.8V
- 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
MAX6382XR28D3+T FAQ
1.How can I place an order for MAX6382XR28D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR28D3+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 MAX6382XR28D3+T reliable?
The price and inventory of MAX6382XR28D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR28D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR28D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR28D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR28D3+T?
MAX6382XR28D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR28D3+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 MAX6382XR28D3+T?
For technical support, including MAX6382XR28D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR28D3+T requirements.
6.How does Aetrix verify that MAX6382XR28D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR28D3+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 MAX6382XR28D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR28D3+T?
All MAX6382XR28D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR28D3+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 MAX6382XR28D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR28D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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