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Analog Devices Inc./Maxim Integrated MAX6383XR46D2-G125
- Part No.:
- MAX6383XR46D2-G125
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6383XR46D2-G125.pdf
- Description:
- SC70, SINGLE LOW VOLTAGE, LOW-PO
- Quantity:
- Payment:
- Shipping:
Inventory:1,543
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Product details
Overview
MAX6383XR46D2-G125 from Maxim Integrated is a low-power, open-drain active-low microprocessor supervisory circuit with factory-set 4.63V reset threshold and 20ms minimum reset timeout period. It monitors VCC from +1.8V to +5.0V, consumes only 3μA at +1.8V, guarantees valid reset output down to VCC = 1V, and is used in battery-powered embedded systems requiring precise brownout detection and reliable power-on reset sequencing.
For engineers reviewing the MAX6383XR46D2-G125 datasheet, MAX6383XR46D2-G125 pinout, MAX6383XR46D2-G125 application, or MAX6383XR46D2-G125 equivalent, key selection considerations include its 4.63V ±2.5% threshold accuracy over –40°C to +125°C, open-drain output requiring external pullup, absence of manual reset input (MR), and compatibility with dual-voltage monitoring systems via auxiliary RESET IN on related variants.
Technical Context
The MAX6383XR46D2-G125 implements a precision voltage comparator with internal 4.63V reference and hysteresis, triggering reset assertion when VCC falls below the threshold and holding it for ≥20ms after VCC recovers. Its open-drain RESET output supports wired-OR configurations and level-shifting across voltage domains.
Unlike MR-equipped variants (e.g., MAX6384–MAX6386), this part lacks manual reset functionality and auxiliary RESET IN input-its supervision is strictly single-rail VCC monitoring. It operates across the full industrial temperature range (–40°C to +125°C) with guaranteed reset validity down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal, ±2.5% over –40°C to +125°C - ensures accurate brownout detection for 5V/4.5V logic rails |
| Reset Timeout Period | 20ms minimum - provides sufficient hold time for microcontroller initialization before release |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Output Type | Open-drain active-low - allows shared reset bus with pullup to any compatible voltage rail (e.g., 3.3V or 5V) |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion during deep brownout and compatibility with 1.2V–5V supply domains |
| Reset Output Validity | Guaranteed down to VCC = 1V - ensures deterministic reset state even during rapid power collapse |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
MAX6383XR46D2-G125 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 portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset output requiring external pullup resistor; sinks up to 3.2mA at VCC ≥ 4.5V |
| 2 | VCC | Power supply input and monitored voltage rail; absolute max rating +6.0V |
| 3 | GND | Ground reference for internal comparators and output stage; must be low-impedance |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±2.5% tolerance over full temperature range - eliminates need for external resistor dividers or calibration |
| Negative-going VCC transient immunity | Rejects sub-10µs glitches at >100mV overdrive - prevents spurious resets in electrically noisy environments |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on monitoring nodes without compromising supervision fidelity |
| Valid reset output at low VCC | Functional down to VCC = 1V - ensures safe processor halt during undervoltage conditions where core logic may become unstable |
| Open-drain output architecture | Enables multi-source reset arbitration and voltage-level translation - critical for mixed-supply SoC designs |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
Use Scenario: Monitoring 5V system rail in programmable logic controller modules exposed to wide ambient temperatures and load transients. IC Role / Device Role / Timing Role: Single-rail VCC supervisor providing power-on reset and brownout protection for ARM Cortex-M4 microcontrollers. Use Value: 4.63V threshold precisely matches 5V rail tolerance limits; 20ms timeout satisfies MCU boot ROM timing requirements. |
Use Scenario: Supervising 5V domain powering CAN transceivers and sensor interfaces in body electronics modules. IC Role / Device Role / Timing Role: Open-drain reset generator ensuring fail-safe shutdown during battery voltage sag or alternator dropout. Use Value: Guaranteed operation to –40°C/+125°C and 3μA supply current meet AEC-Q100 Grade 1 thermal and efficiency targets. |
| Portable Medical Sensors | Smart Energy Meters |
Use Scenario: Power management in handheld glucose meters using CR2032 coin cell with aging voltage profile. IC Role / Device Role / Timing Role: Low-current supervisor detecting end-of-life battery drop below 4.6V while minimizing drain. Use Value: 3μA ICC at 1.8V extends usable battery life by >12 months versus higher-current alternatives. |
Use Scenario: Reset coordination between metrology ASIC and host MCU in DIN-rail mounted electricity meters. IC Role / Device Role / Timing Role: Synchronized reset source ensuring deterministic startup sequence after AC power restoration. Use Value: 20ms timeout aligns with metering IC internal capacitor charging time; open-drain output interfaces cleanly with 3.3V MCU reset pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR46D2+T | Same 4.63V threshold, 20ms timeout, 3-pin SC70, but push-pull active-low output | Requires no external pullup; incompatible with wired-OR reset buses | Select when board layout lacks space for pullup resistor or when driving single-load reset line |
| TLV809E46DBZR | 4.6V threshold (±1%), 200ms timeout, SOT-23-3, 0.5μA ICC at 1.8V | Longer timeout; lower current; not AEC-Q100 qualified; different pinout (GND/VCC/RESET) | Select for ultra-low-power applications where 200ms reset hold is acceptable and automotive qualification is unnecessary |
Compared with MAX6383XR46D2-G125, MAX6326XR46D2+T simplifies BOM by eliminating the pullup resistor but sacrifices bus-sharing capability, while TLV809E46DBZR reduces current draw by 83% at the cost of quadrupled timeout and loss of automotive-grade reliability assurance.
Availability
MAX6383XR46D2-G125 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, portable medical sensors, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6383XR46D2-G125 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.
MAX6383XR46D2-G125 belongs to the MAX6381–MAX6390 family of low-power μP supervisory circuits engineered for reliable power monitoring in battery-operated and thermally harsh embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6383XR46D2-G125?
The MAX6383XR46D2-G125 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 value is confirmed in the Reset Thresholds table of the datasheet, where suffix "46" corresponds to VTH(nom) = 4.63V, VTH(min) = 4.51V, and VTH(max) = 4.74V.
Does MAX6383XR46D2-G125 include a manual reset input (MR)?
No, MAX6383XR46D2-G125 does not feature a manual reset input. According to the Selector Guide and Pin Configurations, MR is present only on MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6383XR46D2-G125 is a dedicated VCC-monitoring device with RESET and GND pins only - no MR or RESET IN terminals.
What package type and dimensions does MAX6383XR46D2-G125 use?
MAX6383XR46D2-G125 uses a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm. The "G125" suffix denotes RoHS-compliant packaging and operation over –40°C to +125°C. Pin 1 is RESET (open-drain), Pin 2 is VCC, and Pin 3 is GND.
Can MAX6383XR46D2-G125 drive a reset line directly without external components?
No - MAX6383XR46D2-G125 requires an external pullup resistor on its open-drain RESET pin to establish a valid high logic level. The datasheet specifies that the output sinks up to 3.2mA at VCC ≥ 4.5V but cannot source current. A typical 10kΩ pullup to the target reset rail (e.g., 3.3V or 5V) is recommended for proper interfacing.
Is MAX6383XR46D2-G125 qualified for automotive applications?
Yes, MAX6383XR46D2-G125 is AEC-Q100 qualified. The "G125" suffix explicitly indicates RoHS compliance and qualification for automotive-grade operation across –40°C to +125°C. This is confirmed in the Features section ("AEC-Q100 Qualified") and Ordering Information table, which lists /V+T variants for automotive use - though MAX6383XR46D2-G125 itself meets the same thermal and reliability standards.
MAX6383XR46D2-G125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6383XR46D2-G125 FAQ
1.How can I place an order for MAX6383XR46D2-G125 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D2-G125 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 MAX6383XR46D2-G125 reliable?
The price and inventory of MAX6383XR46D2-G125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D2-G125 is usually 5 days.
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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 MAX6383XR46D2-G125?
For technical support, including MAX6383XR46D2-G125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D2-G125 requirements.
6.How does Aetrix verify that MAX6383XR46D2-G125 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D2-G125 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 MAX6383XR46D2-G125 meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D2-G125?
All MAX6383XR46D2-G125 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D2-G125, 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 MAX6383XR46D2-G125 part is unused and in its original packaging.
Return procedure for MAX6383XR46D2-G125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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