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Analog Devices Inc./Maxim Integrated MAX6382XR29D3+T
- Part No.:
- MAX6382XR29D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR29D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:222
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Product details
Overview
MAX6382XR29D3+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit in 3-pin SC70 package, monitoring +1.8V to +5.0V supply rails with factory-set 2.93V reset threshold (±2.5% over −40°C to +125°C), 140ms minimum reset timeout, and 3μA supply current at +1.8V. It ensures reliable power-on reset for low-voltage embedded controllers and battery-powered instrumentation.
For engineers reviewing the MAX6382XR29D3+T datasheet, MAX6382XR29D3+T pinout, MAX6382XR29D3+T application, or MAX6382XR29D3+T equivalent, key selection criteria include active-high push-pull output compatibility, guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over automotive temperature range, and SC70 footprint constraints for space-constrained designs.
Technical Context
The MAX6382XR29D3+T implements a precision bandgap-based voltage comparator with internal 2.93V threshold reference and a monostable timer generating a fixed 140ms reset assertion window after VCC recovery. Its active-high push-pull output drives directly into μP reset inputs without external pullup.
No manual reset (MR) or auxiliary RESET IN inputs are present-this variant is optimized for single-rail monitoring only. The device guarantees correct reset logic state for VCC ≥ 1V and exhibits immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over −40°C to +125°C - ensures accurate brownout detection across automotive temperature range |
| Reset Timeout | 140ms minimum - provides sufficient hold time for μP initialization before release |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered systems |
| Operating Voltage | +1.0V to +5.5V - supports valid reset assertion during deep brownout down to 1V |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor on reset line |
| Package | 3-pin SC70 (X3+2 outline) - 1.25mm × 0.85mm footprint for ultra-compact PCB layouts |
| Temperature Range | −40°C to +125°C - qualified for under-hood and industrial control environments |
Pinout & Package
3-pin SC70 package (outline 21-0075, land pattern 90-0208) with exposed pad not electrically connected. Pin 1 = RESET (active-high push-pull output), Pin 2 = VCC (supply input), Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - asserts high during reset; sinks 80µA at VCC ≥ 1.0V, sources 150µA at VCC ≥ 1.8V |
| 2 | VCC | Supply input and monitored rail - operates from 1.0V to 5.5V; reset asserts when VCC falls below 2.93V |
| 3 | GND | Ground reference - must be connected to system ground plane for stable threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.93V threshold | Eliminates external resistor divider; reduces BOM count and layout area vs. adjustable supervisors |
| 140ms fixed reset timeout | Guarantees μP core and peripherals stabilize before release-no timing margin calculation required |
| 3μA supply current at 1.8V | Extends battery life in portable medical sensors and IoT edge nodes beyond 10 years |
| Valid reset output down to VCC = 1V | Prevents spurious release during deep undervoltage events common in Li-ion discharge profiles |
| SC70-3 footprint | Enables placement in <1.5mm² board area-critical for wearable and hearing aid form factors |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with 1.8V–3.0V operating range. IC Role / Device Role / Timing Role: Monitors VCC and asserts active-high RESET to MSP430FR2355 MCU until voltage stabilizes above 2.93V. Use Value: 3μA quiescent current extends battery life to >5 years; 140ms timeout ensures ADC calibration completes before firmware execution. | Use Scenario: Door module controlling window lift, mirror fold, and interior lighting using 12V-to-3.3V buck converter. IC Role / Device Role / Timing Role: Supervises 3.3V rail from DC/DC converter; asserts RESET during ignition cycling and load-dump transients. Use Value: ±2.5% threshold accuracy prevents false resets during cold-cranking (battery dip to 6V); −40°C to +125°C rating covers under-dash mounting. |
| Industrial PLC I/O Cards | Smart Energy Meters |
Use Scenario: DIN-rail mounted controller with isolated 5V and 3.3V rails powering FPGA and RS-485 transceivers. IC Role / Device Role / Timing Role: Dedicated supervisor for 3.3V FPGA core rail; active-high RESET synchronizes configuration loading sequence. Use Value: Push-pull output eliminates pullup resistor-reducing component count and failure modes in high-reliability deployments. | Use Scenario: Two-way AMI meter with RF SoC (sub-GHz) and metrology ASIC, powered by supercapacitor backup. IC Role / Device Role / Timing Role: Monitors 1.8V metrology rail during main power loss; asserts RESET to halt计量 processing before voltage collapse. Use Value: Valid reset down to VCC = 1V ensures clean shutdown during supercapacitor decay; SC70-3 saves space on dense meter PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | Same 2.93V threshold and 140ms timeout, but active-low open-drain output requiring external pullup | Requires PCB redesign for pullup resistor and level-shifting if host MCU expects active-high reset | Select only if legacy design uses MAX809 footprint and active-low signaling is acceptable |
| TPS3808G33DBVR | 2.93V threshold, 200ms timeout, 1.4μA typical ICC at 3.3V, SOT-23-5 package | Includes manual reset input and higher accuracy (±0.5%), but larger footprint and different pinout | Choose when longer timeout or MR functionality is needed; avoid if SC70-3 size constraint is absolute |
Compared with MAX809TRD3+T, MAX6382XR29D3+T eliminates pullup components and simplifies routing; versus TPS3808G33DBVR, it offers 40% smaller area and lower cost for fixed-timing applications where MR is unnecessary.
Availability
MAX6382XR29D3+T is available at Aetrix Electronics and suitable for portable medical sensors, automotive body control modules, industrial PLC I/O cards, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR29D3+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 computing applications.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy reset supervision for battery-powered and safety-critical systems where voltage monitoring reliability and minimal footprint are essential.
FAQ
What is the exact reset threshold voltage of the MAX6382XR29D3+T and how tightly is it specified?
The MAX6382XR29D3+T has a factory-set nominal reset threshold of 2.93V, 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 2.85V and 3.00V at any temperature within that range, ensuring robust brownout detection in automotive and industrial environments.
Does the MAX6382XR29D3+T support manual reset functionality?
No, the MAX6382XR29D3+T does not include a manual reset (MR) input. It is a dedicated single-supply supervisor with only VCC monitoring and active-high push-pull RESET output. For manual reset capability, consider MAX6384XR29D3+T or MAX6390XS29D4+T, which integrate MR with internal pullup.
Can the MAX6382XR29D3+T operate reliably when VCC drops below 1.8V?
Yes, the MAX6382XR29D3+T guarantees correct reset output behavior down to VCC = 1.0V. Its reset output remains valid (high during reset, low otherwise) even as supply voltage decays, enabling safe shutdown sequencing in battery-powered devices where VCC may sag to 1.0V before cutoff.
What is the maximum sink/source current capability of the MAX6382XR29D3+T RESET pin?
The MAX6382XR29D3+T RESET pin can sink up to 80µA at VCC ≥ 1.0V and source up to 150µA at VCC ≥ 1.8V while maintaining valid logic levels. These drive strengths are sufficient for direct connection to most modern microcontrollers' reset inputs without external buffering.
Is the MAX6382XR29D3+T RoHS-compliant and what package does it use?
Yes, the MAX6382XR29D3+T is RoHS-compliant and supplied in a lead(Pb)-free 3-pin SC70 package (outline 21-0075). The "+T" suffix explicitly denotes tape-and-reel packaging with RoHS compliance, and the device meets AEC-Q100 requirements for automotive-grade reliability.
MAX6382XR29D3+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- 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
MAX6382XR29D3+T FAQ
1.How can I place an order for MAX6382XR29D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR29D3+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 MAX6382XR29D3+T reliable?
The price and inventory of MAX6382XR29D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR29D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR29D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR29D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR29D3+T?
MAX6382XR29D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR29D3+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 MAX6382XR29D3+T?
For technical support, including MAX6382XR29D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR29D3+T requirements.
6.How does Aetrix verify that MAX6382XR29D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR29D3+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 MAX6382XR29D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR29D3+T?
All MAX6382XR29D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR29D3+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 MAX6382XR29D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR29D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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