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Analog Devices Inc./Maxim Integrated MAX6383XR40D1
- Part No.:
- MAX6383XR40D1
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR40D1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,990
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Product details
Overview
The MAX6383XR40D1 from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 4.00V reset threshold (±2.5% over -40°C to +125°C), 1ms minimum reset timeout, and 3µA supply current at +1.8V. It monitors VCC in battery-powered embedded systems and ensures reliable µP initialization during brownout or power-up.
For engineers reviewing the MAX6383XR40D1 datasheet, MAX6383XR40D1 pinout, MAX6383XR40D1 application, or MAX6383XR40D1 equivalent, key selection criteria include its 4.00V threshold accuracy, 1ms timeout, SC70-3 package footprint, and open-drain output requiring external pull-up - critical for interfacing with legacy µP reset inputs and multi-rail systems.
Technical Context
This device implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C and 60ppm/°C tempco. Its internal timer guarantees a minimum 1ms reset assertion after VCC recovers above 4.00V.
The open-drain RESET output operates down to VCC = 1.0V and sinks ≥80µA at VOL ≤ 0.3V, enabling direct connection to diverse logic families via external pull-up. No manual reset (MR) or auxiliary RESET IN input is present on this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V (min 3.90V, max 4.10V); ensures reliable detection of 4V rail collapse before µP malfunction. |
| Threshold Accuracy | ±2.5% over -40°C to +125°C; eliminates need for external calibration in automotive/industrial environments. |
| Reset Timeout | 1ms minimum; provides sufficient hold time for fast-boot µPs while minimizing system startup latency. |
| Supply Current | 3µA at +1.8V; enables >10-year battery life in coin-cell-powered IoT sensors. |
| Operating Voltage | 1.0V to 5.5V; supports valid reset assertion even during deep brownout down to 1V VCC. |
| Output Type | Open-drain active-low; allows wired-OR reset bus sharing and level translation across mixed-voltage systems. |
| VOL (Sink) | ≤0.3V at ISINK = 80µA; guarantees clean logic-low signal to µP reset pin under worst-case load. |
Pinout & Package
MAX6383XR40D1 is housed in a 3-pin SC70 package (pkg code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with exposed pad option not applicable. Pin 1 = RESET (open-drain active-low), Pin 2 = VCC, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; requires external pull-up resistor (typically 10kΩ–100kΩ) to host VDD. |
| 2 | VCC | Main supply input and monitored voltage rail; powers internal circuitry and sets fixed reset threshold. |
| 3 | GND | Analog/digital ground reference; must be low-impedance connection to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.00V threshold | Eliminates external resistor divider, reducing BOM count and layout area in space-constrained designs. |
| 1ms minimum reset timeout | Meets fast-start requirements of ARM Cortex-M0/M3 and RISC-V microcontrollers without firmware delay loops. |
| 3µA supply current at 1.8V | Enables integration into always-on sensor nodes powered by CR2032 batteries with >10-year shelf life. |
| Guaranteed operation down to VCC = 1.0V | Ensures deterministic reset assertion during severe brownout, preventing µP latch-up or undefined state. |
| ±2.5% threshold accuracy over temperature | Removes need for derating or guard-banding in thermal-cycling applications like automotive body control modules. |
Applications
| Industrial PLC I/O Modules | Medical Wearable Sensors |
|---|---|
Use Scenario: Monitoring 4.0V auxiliary power rail in DIN-rail mounted programmable logic controller I/O expansion modules. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM-based controller upon 4V rail sag below 3.90V during ESD event or load dump. Use Value: Prevents spurious I/O state changes and communication lockup by guaranteeing ≥1ms reset pulse synchronized to rail recovery. | Use Scenario: Power-on reset generation for ultra-low-power ECG front-end ASIC powered from regulated 4.0V LDO. IC Role / Device Role / Timing Role: Open-drain RESET output pulled up to ASIC's 1.8V IOVDD, ensuring compatible logic levels during cold start. Use Value: 3µA quiescent current extends single-CR2032 battery life beyond 3 years in intermittent-sampling mode. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Brownout detection on 4.0V infotainment domain controller supply in 12V vehicle electrical system. IC Role / Device Role / Timing Role: Reset supervisor monitoring VCC directly; asserts RESET within 35µs of 4V rail crossing threshold during cranking transients. Use Value: ±2.5% threshold accuracy over -40°C to +125°C avoids false resets during engine bay thermal cycling. | Use Scenario: Reset conditioning for dual-core metering SoC operating from 4.0V backup rail during main AC failure. IC Role / Device Role / Timing Role: Provides 1ms minimum reset hold time after 4V rail recovery, satisfying SoC's tRST requirement for secure boot sequence. Use Value: Open-drain output enables shared reset bus with RTC and secure element, reducing PCB routing complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR40D1+ | Same 4.00V threshold and 1ms timeout, but push-pull active-low output; no external pull-up required. | Suitable where board space prohibits external resistor or where driving heavy capacitive loads (>100pF) is needed. | Select MAX6326XR40D1+ if push-pull drive strength is required and VCC ≥ 2.5V is guaranteed during reset deassertion. |
| TPS3808G33DBVR | 3.3V threshold (not 4.0V); 20ms default timeout; 1.4µA IQ at 3.3V; SOT-23-5 package. | Requires redesign of threshold network if 4.0V monitoring is mandatory; longer timeout may delay system boot. | Choose TPS3808G33DBVR only if system uses 3.3V VCC and longer reset hold time is acceptable. |
Compared with MAX6326XR40D1+ and TPS3808G33DBVR, the MAX6383XR40D1 offers optimal trade-off between ultra-low IQ (3µA), precise 4.00V threshold, and minimal 1ms timeout in the smallest SC70-3 footprint - ideal for cost- and space-sensitive 4V-rail applications where external pull-up is acceptable.
Availability
MAX6383XR40D1 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, medical wearable sensors, automotive body control units, and smart energy meters requiring stable component supply across extended temperature ranges.
Supply support for MAX6383XR40D1 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 medical applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy µP supervisory circuits targeting battery-operated and thermally harsh embedded systems requiring guaranteed reset behavior across wide voltage and temperature ranges.
FAQ
What is the exact reset threshold voltage of the MAX6383XR40D1?
The MAX6383XR40D1 has a factory-set nominal reset threshold of 4.00V, with guaranteed minimum of 3.90V and maximum of 4.10V across -40°C to +125°C. This ±2.5% accuracy is specified in the Electrical Characteristics table and applies to all units without user trimming.
Does the MAX6383XR40D1 include a manual reset input (MR)?
No, the MAX6383XR40D1 does not feature a manual reset input. MR functionality is present only on MAX6384/MAX6385/MAX6386 and MAX6390 variants. This part is a dedicated VCC-monitoring device with no MR pin or internal pull-up resistor.
What package type and dimensions does the MAX6383XR40D1 use?
The MAX6383XR40D1 uses the 3-pin SC70 package (pkg code X3-2), with body dimensions of 2.0mm × 2.1mm × 0.95mm and standard lead-free finish. Pin 1 is RESET, Pin 2 is VCC, and Pin 3 is GND - confirmed in the Pin Configurations section of the datasheet.
Can the MAX6383XR40D1 operate reliably at VCC = 1.2V?
Yes, the MAX6383XR40D1 guarantees correct RESET output logic state down to VCC = 1.0V. At 1.2V, it fully meets all specifications including 4.00V threshold comparison and 1ms timeout timing, making it suitable for deep-brownout recovery in low-voltage systems.
Is an external pull-up resistor required for the MAX6383XR40D1 RESET output?
Yes, the MAX6383XR40D1 features an open-drain active-low RESET output, which requires an external pull-up resistor to the target logic rail (e.g., 10kΩ to 3.3V). Without it, the RESET line remains floating and cannot drive a valid high level to the microprocessor.
MAX6383XR40D1 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:
- 4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR40D1 FAQ
1.How can I place an order for MAX6383XR40D1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR40D1 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 MAX6383XR40D1 reliable?
The price and inventory of MAX6383XR40D1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR40D1 is usually 5 days.
3.What payment methods are accepted for MAX6383XR40D1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR40D1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR40D1?
MAX6383XR40D1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR40D1 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 MAX6383XR40D1?
For technical support, including MAX6383XR40D1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR40D1 requirements.
6.How does Aetrix verify that MAX6383XR40D1 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR40D1 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 MAX6383XR40D1 meets industry standards.
7.What is the process for return or replacement of MAX6383XR40D1?
All MAX6383XR40D1 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR40D1, 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 MAX6383XR40D1 part is unused and in its original packaging.
Return procedure for MAX6383XR40D1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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