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Analog Devices Inc./Maxim Integrated MAX6383XR46D2
- Part No.:
- MAX6383XR46D2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR46D2.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:24,701
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Product details
Overview
The MAX6383XR46D2 from Maxim Integrated is a low-power, open-drain active-low microprocessor supervisory circuit with a factory-set 4.63V reset threshold and 20ms minimum reset timeout period. It monitors VCC supply voltage in battery-powered or low-voltage embedded systems, guarantees valid reset output down to VCC = 1V, consumes only 3µA at +1.8V, and is housed in a 3-pin SC70 package for space-constrained applications such as portable instrumentation and IoT edge nodes.
For engineers reviewing the MAX6383XR46D2 datasheet, MAX6383XR46D2 pinout, MAX6383XR46D2 application, or MAX6383XR46D2 equivalent, key selection criteria include its precise 4.63V ±2.5% threshold accuracy over –40°C to +125°C, immunity to negative-going VCC transients, guaranteed reset assertion during brownout, and compatibility with 1.0V–5.5V supply rails.
Technical Context
This device implements a precision bandgap-based voltage comparator with internal 1.27V reference for threshold detection, coupled to a temperature-stable RC timer for deterministic reset timeout. Its open-drain RESET output requires an external pull-up resistor and asserts low when VCC falls below 4.63V, remaining asserted for ≥20ms after VCC recovers above threshold.
No manual reset (MR) input or auxiliary RESET IN pin is present - the MAX6383XR46D2 is a single-supply, dedicated VCC monitor without user-adjustable inputs. Its BiCMOS process ensures stable operation across industrial temperature range with 60ppm/°C tempco on reset threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (nominal), ±2.5% over –40°C to +125°C - enables reliable power-fail detection for 5V logic rails |
| Reset Timeout | 20ms (minimum) - ensures µP completes full power stabilization before release |
| Supply Current | 3µA at +1.8V - supports multi-year battery life in always-on monitoring circuits |
| Operating Voltage | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout |
| Output Type | Open-drain active-low - allows wired-OR configuration and level-shifting with external pull-up |
| Threshold Tempco | 60ppm/°C - minimizes drift-induced false resets across wide temperature swings |
| VOL (RESET) | ≤0.3V at 80µA sink - ensures clean logic-low signal to µP reset input under load |
Pinout & Package
MAX6383XR46D2 is packaged in a 3-pin SC70 (X3-2) surface-mount package measuring 2.0mm × 2.1mm × 0.95mm. Pin 1 = RESET (open-drain active-low output), Pin 2 = VCC (supply input), Pin 3 = GND (ground reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; requires external pull-up to system rail; sinks up to 80µA while asserted |
| 2 | VCC | Main supply input (1.0V–5.5V); also monitored voltage source for fixed-threshold reset generation |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V threshold | Eliminates external resistor divider; reduces BOM count and layout area in 5V-system power monitoring |
| 20ms minimum reset timeout | Meets JEDEC JESD8-12B requirements for 5V µP power-up sequencing stability |
| 3µA supply current at 1.8V | Enables integration into ultra-low-power wake-on-event subsystems without compromising battery runtime |
| Valid reset down to VCC = 1.0V | Prevents premature µP release during slow discharge of backup capacitors or Li-ion battery sag |
| ±2.5% threshold accuracy over temp | Reduces need for margining in thermal design; supports operation in automotive under-hood environments |
Applications
| Industrial PLC I/O Module | Medical Wearable Sensor Node |
|---|---|
Use Scenario: Monitors 5V auxiliary rail powering isolated analog front-end and CAN transceiver in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Dedicated VCC supervisor asserting open-drain RESET to main MCU and FPGA upon undervoltage event. Use Value: Prevents spurious register writes or corrupted ADC sampling during brownout by holding system in reset until 5V rail stabilizes for ≥20ms. | Use Scenario: Ensures reliable startup and fault recovery in ECG patch using coin-cell battery and low-dropout regulator. IC Role / Device Role / Timing Role: Single-point VCC monitor for regulated 3.3V supply feeding ultra-low-power ARM Cortex-M0+ MCU. Use Value: 3µA quiescent current extends battery life beyond 12 months; 4.63V threshold detects LDO dropout before system voltage collapses. |
| Automotive Body Control Module | Smart Home Hub Power Sequencer |
Use Scenario: Supervises 5V domain supplying microcontroller, LIN transceiver, and EEPROM in door module. IC Role / Device Role / Timing Role: Open-drain RESET output tied to shared reset bus with pull-up to 5V; asserts on VCC dip during load dump or cold-crank. Use Value: 60ppm/°C tempco maintains threshold accuracy across –40°C to +125°C ambient, eliminating thermal false triggers. | Use Scenario: Validates stable 3.3V rail derived from USB-C PD before enabling Wi-Fi SoC and Zigbee radio. IC Role / Device Role / Timing Role: Fixed-threshold supervisor providing clean reset pulse to dual-core application processor during power-up. Use Value: 20ms timeout aligns with USB-C PD negotiation timing; open-drain output avoids contention with other reset sources on shared bus. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | Same 4.63V threshold and 20ms timeout, but push-pull active-low output; no open-drain capability | Requires direct connection to µP reset pin without shared bus; incompatible with wired-OR reset architectures | Select when board-level reset is dedicated and no level-shifting or bus arbitration is needed |
| TPS3808G33DBVR | 3.3V threshold (not 4.63V); 20ms timeout; open-drain active-low; 1.4µA ICC at 1.8V | Designed for 3.3V systems; lower current draw but mismatched threshold for 5V monitoring | Select only if redesigning supply rail to 3.3V; not a drop-in replacement for 5V VCC supervision |
Compared with MAX809TRD2+T and TPS3808G33DBVR, the MAX6383XR46D2 uniquely combines 4.63V threshold accuracy, open-drain output, and industrial temperature support in a 3-pin SC70 footprint - making it optimal for space-constrained 5V brownout protection where reset bus sharing is required.
Availability
MAX6383XR46D2 is available at Aetrix Electronics and suitable for industrial control, medical wearables, automotive body electronics, and smart home hubs requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6383XR46D2 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 power, sensing, and connectivity applications in industrial, automotive, and computing markets.
The MAX6381–MAX6390 family delivers low-power, factory-programmed supervisory circuits optimized for reliable µP reset generation in battery-operated and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6383XR46D2?
The MAX6383XR46D2 has a nominal reset threshold of 4.63V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This value is factory-trimmed and specified in the Reset Thresholds table of the datasheet, where suffix "46" corresponds to VTH(nom) = 4.63V. The MAX6383XR46D2 does not support adjustable thresholds or auxiliary voltage monitoring.
Does the MAX6383XR46D2 include a manual reset input (MR)?
No, the MAX6383XR46D2 does not feature a manual reset input. According to the Selector Guide and Pin Description sections, MR is only present on MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6383XR46D2 is a minimal three-pin device (RESET, VCC, GND) with no MR or RESET IN pins - it provides dedicated single-supply VCC supervision only.
What package type and dimensions does the MAX6383XR46D2 use?
The MAX6383XR46D2 is supplied in a 3-pin SC70 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm. Its pinout is standardized: Pin 1 = RESET (open-drain), Pin 2 = VCC, Pin 3 = GND. This compact outline is documented in Maxim's package drawing 21-0075 and is RoHS-compliant with lead-free termination.
Can the MAX6383XR46D2 operate with supply voltages below 1.8V?
Yes, the MAX6383XR46D2 operates from 1.0V to 5.5V per its Absolute Maximum Ratings and Electrical Characteristics tables. While supply current is specified as 3µA at +1.8V, the device guarantees functional reset assertion down to VCC = 1.0V - critical for detecting final-stage battery depletion or LDO dropout. However, performance parameters like VOL and tempco are characterized across the full 1.0V–5.5V range.
Is the MAX6383XR46D2 pin-compatible with older Maxim reset ICs like MAX809?
No, the MAX6383XR46D2 is not pin-compatible with MAX809 series devices. Although both are 3-pin supervisors, MAX809 uses SOT-23-3 (different pad layout and thermal pad), whereas MAX6383XR46D2 uses SC70-3 (smaller, no thermal pad). Additionally, MAX809TRD2+T has push-pull output vs. MAX6383XR46D2's open-drain - requiring different PCB routing and pull-up implementation. Direct substitution would necessitate layout revision.
MAX6383XR46D2 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:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR46D2 FAQ
1.How can I place an order for MAX6383XR46D2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D2 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 reliable?
The price and inventory of MAX6383XR46D2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D2 is usually 5 days.
3.What payment methods are accepted for MAX6383XR46D2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR46D2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR46D2?
MAX6383XR46D2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR46D2 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 MAX6383XR46D2?
For technical support, including MAX6383XR46D2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D2 requirements.
6.How does Aetrix verify that MAX6383XR46D2 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D2 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 meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D2?
All MAX6383XR46D2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D2, 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 part is unused and in its original packaging.
Return procedure for MAX6383XR46D2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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