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Analog Devices Inc./Maxim Integrated MAX6383XR46D3+T
- Part No.:
- MAX6383XR46D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR46D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,475
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Product details
Overview
MAX6383XR46D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 4.63V reset threshold (±2.5% over –40°C to +125°C), and 140ms minimum reset timeout. It monitors single supply voltage (1.0V–5.5V), consumes only 3μA at 1.8V, and guarantees valid reset state down to VCC = 1V - used in battery-powered instrumentation and embedded controllers requiring reliable brownout detection.
For engineers reviewing the MAX6383XR46D3+T datasheet, MAX6383XR46D3+T pinout, MAX6383XR46D3+T application, or MAX6383XR46D3+T equivalent, key selection considerations include its 4.63V threshold accuracy, 140ms timeout, SC70-3 package footprint, open-drain output requiring external pullup, and compatibility with systems needing precise high-threshold reset for 5V or 4.5V rails.
Technical Context
The MAX6383XR46D3+T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 4.63V threshold, with ±2.5% tolerance across –40°C to +125°C and 60ppm/°C tempco. Its internal timer initiates a guaranteed-minimum 140ms reset assertion after VCC recovers above threshold.
As an open-drain active-low device, it requires an external pullup resistor on the RESET pin and does not feature manual reset (MR) or auxiliary RESET IN inputs - distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 variants. It operates down to VCC = 1V while maintaining correct logic state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal, ±2.5% over –40°C to +125°C - ensures accurate power-fail detection on 4.5V/5V rails without calibration |
| Reset Timeout | 140ms minimum - provides sufficient hold time for microcontroller initialization after power recovery |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered portable devices |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion during deep brownout down to 1V supply |
| Output Type | Open-drain active-low - allows wired-OR reset bus sharing and level translation via external pullup |
| Reset Output Leakage | 1.0μA max when not asserted - minimizes current draw on shared reset lines |
| Temperature Range | –40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
MAX6383XR46D3+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm. The compact footprint supports high-density PCB layouts in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset output requiring external pullup; sinks up to 3.2mA at VCC ≥ 4.5V with VOL ≤ 0.4V |
| 2 | VCC | Power supply input (1.0V–5.5V); also monitored voltage source for reset threshold comparison |
| 3 | GND | Ground reference for internal comparator and output stage; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V threshold | Eliminates external resistor divider and calibration effort for 4.5V/5V system monitoring |
| 140ms guaranteed-minimum timeout | Ensures microcontroller core and peripherals fully stabilize before release from reset |
| 3μA supply current at 1.8V | Extends battery life in always-on sensor nodes and portable medical devices |
| Valid reset down to VCC = 1V | Prevents spurious release during severe brownout conditions where supply collapses slowly |
| Open-drain output architecture | Enables multi-source reset arbitration and voltage-level translation without level shifters |
Applications
| Industrial PLC I/O Module | Portable ECG Monitor |
|---|---|
Use Scenario: Monitors 5V backplane supply in modular I/O racks subject to intermittent brownouts during field wiring faults. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM Cortex-M7 controller upon VCC drop below 4.63V. Use Value: 140ms timeout prevents premature firmware execution during transient dips; open-drain output interfaces directly with 3.3V logic reset bus via 10kΩ pullup. |
Use Scenario: Powers on/off sequence control in battery-operated electrocardiogram acquisition units with dual 3.3V/1.8V rails. IC Role / Device Role / Timing Role: Primary reset supervisor for 3.3V analog front-end and digital subsystem, triggered by main 3.3V rail collapse. Use Value: 4.63V threshold accurately detects failure of upstream 5V DC-DC converter feeding the 3.3V LDO; 3μA quiescent current preserves battery runtime. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Monitors switched 5V supply in door module exposed to load-dump transients and cold-crank voltage sag. IC Role / Device Role / Timing Role: Resets microcontroller during VCC < 4.63V events caused by alternator dropout or battery disconnection. Use Value: ±2.5% threshold accuracy over –40°C to +125°C ensures consistent trip point across temperature extremes; AEC-Q100-compatible variant available. |
Use Scenario: Ensures deterministic startup of metrology SoC after AC mains interruption or capacitor discharge in utility-grade meters. IC Role / Device Role / Timing Role: Single-supply reset generator tied to 5V metering rail, asserting reset until stable post-interruption. Use Value: 140ms timeout exceeds typical SoC boot ROM execution window; open-drain output avoids contention with other reset sources in multi-chip meter design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6383XR46D3/V+T | AEC-Q100 qualified; identical electrical specs and 3-pin SC70 package | Required for automotive production; same pinout and timing but certified for vehicle use | Select for automotive body electronics or infotainment where qualification is mandatory |
| MAX6326XR46D3+T | Same 4.63V threshold and 140ms timeout, but push-pull active-low output instead of open-drain | No external pullup needed; incompatible with wired-OR reset buses or mixed-voltage systems | Choose when board layout lacks space for pullup resistor or when driving single-load reset line |
Compared with MAX6383XR46D3+T, the /V+T variant adds automotive qualification without altering functionality, while MAX6326XR46D3+T replaces open-drain flexibility with simplified push-pull drive - making the original optimal for shared reset architectures requiring level translation or multi-source arbitration.
Availability
MAX6383XR46D3+T is available at Aetrix Electronics and suitable for industrial PLCs, portable medical devices, automotive body modules, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6383XR46D3+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, and computing applications, emphasizing low power, high reliability, and small form factor.
The MAX6381–MAX6390 family delivers single/dual-supply microprocessor supervisory circuits optimized for battery-powered and harsh-environment systems requiring accurate, low-quiescent-current reset generation.
FAQ
What is the exact reset threshold voltage of MAX6383XR46D3+T and how tightly is it specified?
The MAX6383XR46D3+T has a factory-set nominal reset threshold of 4.63V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This corresponds to a min/max range of 4.51V to 4.74V at +25°C and 4.51V to 4.74V across temperature, enabling precise detection of 5V rail failures without external trimming.
Does MAX6383XR46D3+T include a manual reset input (MR) pin?
No, MAX6383XR46D3+T does not include a manual reset input. It is a basic single-supply supervisory circuit with only three pins: RESET (open-drain), VCC, and GND. Manual reset capability is present only in MAX6384–MAX6386 and MAX6390 variants, which use 4-pin SC70 or 6-pin μDFN packages.
What package type and dimensions does MAX6383XR46D3+T use?
MAX6383XR46D3+T uses a lead-free, RoHS-compliant 3-pin SC70 package (outline number 21-0075), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is documented as 90-0208, and it features a thermal resistance θJA of 340.4°C/W on a multilayer board.
Can MAX6383XR46D3+T operate reliably below 1.8V supply voltage?
Yes, MAX6383XR46D3+T operates from 1.0V to 5.5V and guarantees correct reset output logic state down to VCC = 1V. At 1.0V, it draws approximately 6μA and maintains valid open-drain reset assertion - critical for detecting deep brownout conditions before complete power loss.
Is MAX6383XR46D3+T pin-compatible with older Maxim reset ICs like MAX809?
Yes, MAX6383XR46D3+T is pin-compatible with MAX809/MAX810/MAX803 and other legacy Maxim supervisors in the 3-pin SOT-23/SC70 footprint. It shares identical pinout (RESET, VCC, GND), allowing drop-in replacement where 4.63V threshold and 140ms timeout meet system requirements.
MAX6383XR46D3+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:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR46D3+T FAQ
1.How can I place an order for MAX6383XR46D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D3+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 MAX6383XR46D3+T reliable?
The price and inventory of MAX6383XR46D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383XR46D3+T?
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4.How is shipping managed for MAX6383XR46D3+T?
MAX6383XR46D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR46D3+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 MAX6383XR46D3+T?
For technical support, including MAX6383XR46D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D3+T requirements.
6.How does Aetrix verify that MAX6383XR46D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D3+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 MAX6383XR46D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D3+T?
All MAX6383XR46D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D3+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 MAX6383XR46D3+T part is unused and in its original packaging.
Return procedure for MAX6383XR46D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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