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Analog Devices Inc./Maxim Integrated MAX6383XR42D3
- Part No.:
- MAX6383XR42D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR42D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:648
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Product details
Overview
MAX6383XR42D3 from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 4.20V reset threshold (±2.5% over -40°C to +125°C), and 140ms minimum reset timeout. It monitors single supply voltage (VCC) in battery-powered and embedded systems where reliable power-on reset and brownout protection are critical.
For engineers reviewing the MAX6383XR42D3 datasheet, MAX6383XR42D3 pinout, MAX6383XR42D3 application, or MAX6383XR42D3 equivalent, key selection criteria include its 3µA supply current at 1.8V, guaranteed valid reset output down to VCC = 1V, open-drain configuration requiring external pull-up, and SC70-3 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6383XR42D3 implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across full industrial temperature range (-40°C to +125°C) and 60ppm/°C tempco. Its internal timer generates a fixed 140ms minimum reset assertion period after VCC rises above 4.20V.
As part of the MAX6381–MAX6390 family, it uses BiCMOS process (647 transistors) and features negative-going VCC transient immunity-rejecting glitches up to ~35µs when overdrive is 100mV-without requiring external filtering beyond a recommended 0.1µF VCC bypass capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.20V (nominal), ±2.5% tolerance over -40°C to +125°C - ensures consistent trip point across operating conditions |
| Reset Timeout | 140ms (minimum) - guarantees µP remains held in reset long enough for stable power rail recovery |
| Supply Current | 3µA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion even during deep brownout (down to 1V) |
| Output Type | Open-drain active-low - allows wired-OR configuration and level translation via external pull-up |
| Package | 3-pin SC70 (X3-2) - 1.25mm × 0.85mm footprint ideal for wearables and portable medical devices |
| Temp Range | -40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
MAX6383XR42D3 is housed in a 3-pin SC70 package (pkg code X3-2), with pin 1 = RESET (active-low open-drain), pin 2 = VCC, and pin 3 = GND. No manual reset (MR) or auxiliary RESET IN pins are present - this variant is optimized for simple single-supply monitoring.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; requires external pull-up resistor to define high state and logic level |
| 2 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and sets reset threshold reference |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to minimize noise coupling into reset comparator |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.20V nominal with ±2.5% accuracy over full temperature range - eliminates need for external resistor divider calibration |
| Ultra-low quiescent current | 3µA at 1.8V - extends battery life in always-on monitoring nodes without compromising reset reliability |
| Guaranteed reset validity | Operates correctly down to VCC = 1.0V - ensures deterministic behavior during severe brownout events |
| Negative transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive - reduces false resets in electrically noisy environments |
| Small-footprint packaging | SC70-3 (1.25mm × 0.85mm) - saves >50% board area vs. SOT-23 while maintaining hand-solderability |
Applications
| Battery-Powered IoT Sensor Node | Industrial PLC I/O Module |
|---|---|
Use Scenario: A wireless temperature sensor powered by CR2032 coin cell must retain accurate timekeeping and wake only on valid reset after cold start or voltage sag. IC Role / Device Role / Timing Role: MAX6383XR42D3 asserts reset until VCC exceeds 4.20V and holds it for ≥140ms, ensuring MCU initializes only after stable 3.0V rail. Use Value: 3µA supply current extends battery life beyond 5 years; open-drain output interfaces cleanly with 3.3V MCU reset pin via 10kΩ pull-up. | Use Scenario: An isolated analog input module in a factory automation system experiences intermittent 24V supply dips due to motor switching noise. IC Role / Device Role / Timing Role: MAX6383XR42D3 monitors local 5V LDO output and forces controlled restart if voltage drops below 4.20V for >140ms. Use Value: ±2.5% threshold accuracy prevents nuisance resets during normal ripple; -40°C to +125°C rating matches industrial ambient requirements. |
| Automotive Body Control Module | Portable Medical Diagnostic Device |
Use Scenario: A BCM sub-module powered from vehicle battery (9V–16V) via 5V buck converter must survive load-dump and cold-crank events. IC Role / Device Role / Timing Role: MAX6383XR42D3 provides primary reset supervision for the 5V domain, asserting reset during cranking-induced brownouts (<4.20V). Use Value: Valid operation down to VCC = 1.0V ensures reset signal integrity even during extreme undervoltage; SC70 package withstands reflow and vibration. | Use Scenario: A handheld ECG monitor uses a single Li-ion cell (2.7V–4.2V) with buck-boost regulator to generate stable 3.3V for analog front-end and MCU. IC Role / Device Role / Timing Role: MAX6383XR42D3 monitors the 3.3V rail and triggers reset if voltage sags below 4.20V - indicating regulator failure or end-of-battery. Use Value: 140ms timeout prevents spurious resets from brief transients; 1.25mm × 0.85mm SC70 fits within tight mechanical envelope of handheld enclosure. |
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 | 4.00V reset threshold (±2.5%), 240ms timeout, same SC70-3 package | Lacks transient immunity spec; no published glitch rejection data | Select when 4.00V threshold and longer timeout are acceptable and cost sensitivity outweighs transient robustness |
| TPS3808G33DBVR | 3.3V reset threshold, adjustable timeout (1ms–10s), SOT-23-5 package | Requires external timing capacitor; higher 8µA ICC at 3.3V | Choose for designs needing programmable delay or tighter 3.3V rail monitoring, accepting larger footprint and higher current |
Compared with MAX809TRD3+T and TPS3808G33DBVR, MAX6383XR42D3 delivers superior transient immunity, lower quiescent current, and precise 4.20V threshold - making it optimal for automotive and long-life battery applications where reset reliability under electrical stress is non-negotiable.
Availability
MAX6383XR42D3 is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC I/O modules, and automotive body control units requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6383XR42D3 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 communications applications.
The MAX6381–MAX6390 family was engineered specifically for ultra-low-power, high-accuracy microprocessor reset supervision in space- and energy-constrained systems - emphasizing guaranteed operation down to 1V and robust transient immunity.
FAQ
What is the exact reset threshold voltage of the MAX6383XR42D3?
The MAX6383XR42D3 has a factory-set nominal reset threshold of 4.20V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "42" corresponds to VTH(nom) = 4.20V. The MAX6383XR42D3 does not support user adjustment - the threshold is laser-trimmed during production.
Does the MAX6383XR42D3 include a manual reset input (MR)?
No, the MAX6383XR42D3 does not include a manual reset input. Per the Selector Guide and Pin Description sections, MR is only present on MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6383XR42D3 is a 3-pin SC70 device with RESET, VCC, and GND only - it provides dedicated single-supply supervision without manual intervention capability.
What package type and dimensions does the MAX6383XR42D3 use?
The MAX6383XR42D3 is packaged in a 3-pin SC70 (also labeled SC70-3 or X3-2), measuring 1.25mm × 0.85mm with 0.65mm pitch. This is confirmed in the Ordering Information table and Package Information section (drawing 21-0075). It is lead-free (RoHS-compliant) and compatible with standard reflow soldering profiles.
Can the MAX6383XR42D3 operate reliably during severe voltage brownout conditions?
Yes, the MAX6383XR42D3 guarantees correct reset output logic state down to VCC = 1.0V, as specified in the Electrical Characteristics table. This ensures deterministic reset assertion even during deep brownout events where other supervisors may fail. The MAX6383XR42D3 maintains comparator functionality and timer accuracy throughout this range - critical for fail-safe behavior in automotive and industrial systems.
Is an external pull-up resistor required for the MAX6383XR42D3 RESET pin?
Yes, an external pull-up resistor is mandatory because the MAX6383XR42D3 features an open-drain active-low RESET output. Without a pull-up, the RESET line floats high and cannot drive a logic-low reset signal to the microprocessor. Typical values range from 10kΩ to 100kΩ, selected to balance rise time and current consumption - the MAX6383XR42D3 itself sinks ≤80µA when asserted.
MAX6383XR42D3 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:
- 4.2V
- 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
MAX6383XR42D3 FAQ
1.How can I place an order for MAX6383XR42D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR42D3 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 MAX6383XR42D3 reliable?
The price and inventory of MAX6383XR42D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR42D3 is usually 5 days.
3.What payment methods are accepted for MAX6383XR42D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR42D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR42D3?
MAX6383XR42D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR42D3 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 MAX6383XR42D3?
For technical support, including MAX6383XR42D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR42D3 requirements.
6.How does Aetrix verify that MAX6383XR42D3 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR42D3 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 MAX6383XR42D3 meets industry standards.
7.What is the process for return or replacement of MAX6383XR42D3?
All MAX6383XR42D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR42D3, 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 MAX6383XR42D3 part is unused and in its original packaging.
Return procedure for MAX6383XR42D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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