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Analog Devices Inc./Maxim Integrated MAX6383XR31D3
- Part No.:
- MAX6383XR31D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR31D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:642
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Product details
Overview
MAX6383XR31D3 from Maxim Integrated is a single-supply, open-drain active-low microprocessor supervisory circuit in a 3-pin SC70 package. It monitors VCC from +1.0V to +5.5V, asserts reset below a factory-set 3.08V threshold (±2.5% over −40°C to +125°C), and provides a guaranteed 140ms minimum reset timeout. It consumes only 3µA at +1.8V and guarantees valid reset output down to VCC = 1V - used in battery-powered IoT sensors and low-voltage embedded controllers for reliable power-on initialization.
For engineers reviewing the MAX6383XR31D3 datasheet, MAX6383XR31D3 pinout, MAX6383XR31D3 application, or MAX6383XR31D3 equivalent, key selection criteria include its open-drain active-low reset output, 3.08V reset threshold with ±2.5% accuracy over temperature, 140ms timeout, ultra-low 3µA supply current at 1.8V, and SC70-3 footprint compatibility with legacy MAX809/MAX6326 families.
Technical Context
The MAX6383XR31D3 implements a precision bandgap-based voltage comparator with internal 1.27V reference for threshold generation, paired with a temperature-stable RC timing network for the 140ms reset timeout. Its open-drain RESET output requires an external pull-up resistor and remains asserted until VCC exceeds 3.08V and sustains that level for ≥140ms.
It features negative-going VCC transient immunity up to 35µs for 100mV overdrive, operates down to VCC = 1.0V with guaranteed logic state validity, and includes no manual reset (MR) or auxiliary RESET IN inputs - distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V nominal (suffix "31"), ±2.5% over −40°C to +125°C - ensures reliable brownout detection across industrial temperature range |
| Reset Timeout | 140ms minimum (suffix "D3") - holds µP in reset long enough for stable clock and supply settling |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage | +1.0V to +5.5V - supports direct interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails |
| Output Type | Open-drain active-low RESET - allows wired-OR configuration and flexible voltage-level translation via external pull-up |
| Reset Validity | Guaranteed correct logic state down to VCC = 1.0V - prevents spurious release during deep brownout |
| Temp Range | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX6383XR31D3 is housed in a 3-pin SC70-3 package (pkg code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and RoHS-compliant lead-free finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset output requiring external pull-up; sinks 80µA @ VCC ≥1.0V with VOL ≤0.3V |
| 2 | VCC | Main supply input and monitored voltage rail; powers internal circuitry and sets fixed reset threshold |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.08V threshold | Eliminates external resistor divider; reduces BOM count and layout area in space-constrained designs |
| 140ms guaranteed timeout | Ensures µP core and peripherals fully stabilize before release - avoids boot failures in FPGA-configurable systems |
| 3µA supply current at 1.8V | Extends battery life in portable medical monitors and wireless sensor nodes beyond 10 years (CR2032) |
| Open-drain output | Enables shared reset bus across mixed-voltage domains (e.g., 1.8V logic controlling 3.3V peripheral) |
| −40°C to +125°C operation | Validated for use in automotive body control modules and industrial PLC I/O cards without derating |
Applications
| Industrial Sensor Node | Automotive Body Controller |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via BLE every 5 minutes. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low reset to MSP430FR2355 during cold-start and brownout events. Use Value: 3µA quiescent current extends CR2032 lifetime >7 years; 140ms timeout prevents premature firmware execution before LDO stabilization. | Use Scenario: Door module monitoring window lift motor, interior lighting, and lock actuators. IC Role / Device Role / Timing Role: Reset supervisor ensuring TMS570LS0432 safety MCU boots only after 12V supply reaches 3.08V and remains stable for 140ms. Use Value: ±2.5% threshold accuracy over −40°C to +125°C eliminates false resets in extreme ambient conditions. |
| Portable Medical Monitor | Low-Power IoT Gateway |
Use Scenario: Handheld pulse oximeter powered by single AAA cell with dynamic voltage scaling. IC Role / Device Role / Timing Role: VCC monitor asserting reset when battery drops below 3.08V, holding nRST low until recharge restores margin. Use Value: Guaranteed reset validity down to VCC = 1.0V prevents erratic behavior during deep discharge recovery. | Use Scenario: Edge gateway aggregating LoRaWAN sensor data, sleeping between transmissions. IC Role / Device Role / Timing Role: Power-on supervisor for i.MX RT1020 crossover MCU, coordinating POR with PMIC sequencing. Use Value: Open-drain output interfaces directly to 3.3V reset net while powered from 1.8V domain - no level shifter required. |
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 3.08V threshold and 140ms timeout, but push-pull active-low output; higher ICC (12µA typical at 1.8V) | Requires no external pull-up; less suitable for wired-OR or mixed-voltage reset buses | Select when board space permits larger SOT-23-3 and push-pull drive simplifies layout |
| TPS3808G30DBVR | 3.0V threshold (±0.5%), 200ms timeout, 1.4µA ICC at 1.8V; same SC70-3 package | Tighter threshold tolerance and lower current, but no guaranteed operation below VCC = 1.6V | Select when highest accuracy and lowest power are critical, and VCC never falls below 1.6V during brownout |
Compared with MAX809TRD3+T and TPS3808G30DBVR, the MAX6383XR31D3 uniquely balances ultra-low ICC (3µA), guaranteed 1V operation, and open-drain flexibility - making it optimal for battery-critical, multi-rail, or harsh-environment designs where reset bus sharing or deep brownout resilience is required.
Availability
MAX6383XR31D3 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body controllers, portable medical monitors, and low-power IoT gateways requiring stable component supply with full temperature-range qualification and RoHS compliance.
Supply support for MAX6383XR31D3 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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX6381–MAX6390 family delivers low-power, single/dual voltage supervisors optimized for space-constrained, battery-sensitive, and wide-temperature embedded systems - with emphasis on reset reliability, minimal quiescent current, and SC70/µDFN footprint efficiency.
FAQ
What is the exact reset threshold voltage of the MAX6383XR31D3?
The MAX6383XR31D3 has a factory-set nominal reset threshold of 3.08V, with guaranteed limits of 3.00V (min) and 3.15V (max) over the full −40°C to +125°C operating temperature range, and ±2.5% accuracy relative to nominal.
Does the MAX6383XR31D3 include a manual reset input (MR)?
No, the MAX6383XR31D3 does not include a manual reset input. MR is present only on MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6383XR31D3 is a dedicated VCC-monitoring device with RESET and GND pins only.
What package type and dimensions does the MAX6383XR31D3 use?
The MAX6383XR31D3 uses a 3-pin SC70-3 package (pkg code X3-2), with body dimensions of 2.0mm × 2.1mm × 0.95mm and gull-wing leads. It is RoHS-compliant and lead-free, per Maxim's +T suffix designation.
Can the MAX6383XR31D3 operate reliably below 1.8V supply?
Yes - the MAX6383XR31D3 is fully specified from VCC = +1.0V to +5.5V. Its reset output state is guaranteed valid down to VCC = 1.0V, and supply current is characterized at 1.8V (3µA), 2.5V (4µA), and 3.6V (6µA).
Is the MAX6383XR31D3 pin-compatible with older Maxim reset ICs like the MAX809?
Yes, the MAX6383XR31D3 shares the same 3-pin SC70-3 pinout (RESET, VCC, GND) and functional assignment as the MAX809 series, enabling drop-in replacement in many layouts - though note the MAX6383XR31D3 uses open-drain output versus MAX809's push-pull, requiring an external pull-up resistor.
MAX6383XR31D3 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:
- 3.08V
- 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
MAX6383XR31D3 FAQ
1.How can I place an order for MAX6383XR31D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR31D3 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 MAX6383XR31D3 reliable?
The price and inventory of MAX6383XR31D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR31D3 is usually 5 days.
3.What payment methods are accepted for MAX6383XR31D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR31D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR31D3?
MAX6383XR31D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR31D3 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 MAX6383XR31D3?
For technical support, including MAX6383XR31D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR31D3 requirements.
6.How does Aetrix verify that MAX6383XR31D3 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR31D3 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 MAX6383XR31D3 meets industry standards.
7.What is the process for return or replacement of MAX6383XR31D3?
All MAX6383XR31D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR31D3, 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 MAX6383XR31D3 part is unused and in its original packaging.
Return procedure for MAX6383XR31D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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