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Analog Devices Inc./Maxim Integrated MAX6383XR22D3+
- Part No.:
- MAX6383XR22D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR22D3+.pdf
- Description:
- MAX6383 SC70, SINGLE LOW-VOLTAGE
- Quantity:
- Payment:
- Shipping:
Inventory:3,967
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Product details
Overview
MAX6383XR22D3+ from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.19V reset threshold (±2.5% over -40°C to +125°C), 140ms minimum reset timeout, and 3µA supply current at +1.8V. It monitors single-supply VCC in battery-powered IoT sensors and portable medical devices where brownout immunity and ultra-low quiescent current are critical.
For engineers reviewing the MAX6383XR22D3+ datasheet, MAX6383XR22D3+ pinout, MAX6383XR22D3+ application, or MAX6383XR22D3+ equivalent, key selection criteria include its open-drain reset architecture requiring external pull-up, guaranteed valid reset down to VCC = 1V, negative-going transient immunity up to 35µs at 200mV overdrive, and SC70-3 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX6383XR22D3+ 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 generates a fixed 140ms minimum reset assertion period after VCC rises above 2.19V, independent of supply ramp rate.
As a member of the MAX6381–MAX6390 family, it shares BiCMOS process technology (647 transistors) and operates from 1.0V to 5.5V supply range. Unlike variants with manual reset (MR) or auxiliary RESET IN inputs, the MAX6383XR22D3+ provides only VCC monitoring with no additional control pins - simplifying design for single-rail systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.19V (nominal), ±2.5% tolerance over full temperature range - ensures reliable brownout detection across industrial environments |
| Reset Timeout | 140ms (minimum) - guarantees µP initialization completes before firmware execution begins |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell-powered devices |
| Operating Voltage | 1.0V to 5.5V - supports operation during deep brownout and compatibility with 1.2V–5V logic domains |
| Output Type | Open-drain active-low - allows wired-OR reset bus configuration and level translation across voltage domains |
| Reset Validity | Guaranteed down to VCC = 1V - maintains defined logic state during power collapse, preventing metastability |
| Transient Immunity | 35µs max glitch duration at 200mV overdrive - suppresses noise-induced false resets in electrically noisy environments |
Pinout & Package
MAX6383XR22D3+ is housed in a 3-pin SC70-3 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with wettable flank leads for automated optical inspection. Pin 1 is RESET (open-drain active-low), Pin 2 is VCC, and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output - requires external pull-up resistor; sinks 80µA at 0.3V when asserted |
| 2 | VCC | Supply input and monitored voltage rail - powers internal circuitry and serves as reset threshold reference |
| 3 | GND | Analog and digital ground reference - must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.19V with ±2.5% accuracy eliminates need for external resistor dividers or calibration |
| Ultra-low supply current | 3µA at +1.8V reduces battery load by >90% versus legacy reset ICs, extending shelf life |
| Open-drain output architecture | Enables shared reset bus with multiple ICs and seamless interface to 1.8V/2.5V/3.3V µP reset inputs |
| Guaranteed reset validity to 1V | Prevents undefined reset state during power collapse, eliminating boot failures in energy-harvesting systems |
| Negative-going transient rejection | 35µs immunity at 200mV overdrive suppresses ESD-induced glitches without external RC filtering |
Applications
| Wearable Health Monitors | Industrial Sensor Nodes |
|---|---|
Use Scenario: Continuous ECG/SpO₂ monitoring powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises 1.8V LDO output to ensure MCU resets cleanly after cold start or voltage sag during RF burst. Use Value: 3µA quiescent current extends battery life beyond 2 years; 140ms timeout exceeds typical MCU bootloader initialization window. | Use Scenario: Wireless vibration sensor mounted on rotating machinery, operating in -40°C to +85°C ambient. IC Role / Device Role / Timing Role: Monitors 3.3V supply derived from energy harvester; asserts reset if rail drops below 2.19V during startup or load transients. Use Value: ±2.5% threshold accuracy over temperature prevents spurious resets in wide-range environments; SC70-3 footprint minimizes board area. |
| Smart Meter Battery Backup | Portable Diagnostic Equipment |
Use Scenario: Lithium-thionyl chloride backup powering real-time clock and memory during main AC failure. IC Role / Device Role / Timing Role: Ensures secure microcontroller reset when primary supply collapses, preserving metering integrity. Use Value: Guaranteed reset assertion down to VCC = 1V prevents data corruption during final battery discharge phase. | Use Scenario: Handheld ultrasound probe with dual-voltage FPGA (1.2V core, 2.5V I/O) and battery management. IC Role / Device Role / Timing Role: Provides primary reset signal synchronized to 2.5V I/O rail, coordinating power sequencing with PMIC. Use Value: Open-drain output interfaces directly to FPGA's 2.5V-tolerant reset pin without level shifter. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LTR22D3+ | Same 2.19V threshold and 140ms timeout, but push-pull active-low output; higher ICC (10µA at +1.8V) | Requires no external pull-up; unsuitable for wired-OR buses or mixed-voltage reset networks | Select when board layout prohibits external resistors or when driving high-capacitance reset lines directly |
| TPS3808G12DBVR | 2.16V threshold (±0.5%), 140ms timeout, push-pull active-low; 1.1µA ICC at +1.8V; different pinout (SOT-23-5) | Higher accuracy and lower current, but 5-pin package increases footprint; no open-drain flexibility | Select when highest threshold precision and lowest power are mandatory, and PCB space allows SOT-23-5 |
Compared with MAX6326LTR22D3+, the MAX6383XR22D3+ trades higher output flexibility (open-drain) for slightly higher current; compared with TPS3808G12DBVR, it offers smaller footprint and bus-sharing capability at the cost of threshold tolerance and quiescent current.
Availability
MAX6383XR22D3+ is available at Aetrix Electronics and suitable for wearable health monitors, industrial sensor nodes, and smart meter battery backup systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383XR22D3+ 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 computing applications.
The MAX6381–MAX6390 product line delivers ultra-low-power, factory-trimmed supervisory circuits optimized for battery-critical and space-constrained embedded systems requiring reliable power-on reset and brownout protection.
FAQ
What is the exact reset threshold voltage of the MAX6383XR22D3+?
The MAX6383XR22D3+ has a factory-set nominal reset threshold of 2.19V, 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 "22" corresponds to VTH(nom) = 2.19V. The MAX6383XR22D3+ uses this precise threshold to initiate reset when VCC falls below specification, ensuring deterministic behavior in low-voltage systems.
Does the MAX6383XR22D3+ support manual reset functionality?
No, the MAX6383XR22D3+ does not include a manual reset (MR) input. Per the Selector Guide and Pin Description sections, only MAX6384/MAX6385/MAX6386/MAX6390 variants feature MR. The MAX6383XR22D3+ is a dedicated VCC-monitoring device with three pins (RESET, VCC, GND) and no provision for external reset triggering - making it ideal for simplified, cost-sensitive single-rail applications where manual intervention is unnecessary.
What package type and dimensions does the MAX6383XR22D3+ use?
The MAX6383XR22D3+ is packaged in a 3-pin SC70-3 (package code X3-2), with body dimensions of 2.0mm × 2.1mm × 0.95mm and wettable flank leads. This compact outline is documented in package drawing 21-0075. The SC70-3 footprint enables high-density placement in portable electronics, and the lead finish is lead-free (RoHS-compliant), as indicated by the "+" suffix in the part number MAX6383XR22D3+.
Can the MAX6383XR22D3+ operate with supply voltages below 1.8V?
Yes, the MAX6383XR22D3+ operates from 1.0V to 5.5V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Its reset output remains valid down to VCC = 1.0V, and supply current is characterized at +1.8V (3µA), +2.5V (4µA), and +3.6V (6µA). Operation below 1.8V is fully supported, enabling use in emerging 1.2V and 1.5V logic domains while maintaining guaranteed reset assertion timing and threshold accuracy.
Is an external pull-up resistor required for the MAX6383XR22D3+ reset output?
Yes, an external pull-up resistor is mandatory for the MAX6383XR22D3+ because it features an open-drain active-low RESET output. The datasheet specifies that the output requires an external pull-up to establish a defined high state when deasserted. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. Without this resistor, the RESET line floats and cannot drive a high logic level - a fundamental requirement explicitly stated in the Pin Description and Detailed Description sections for all MAX6383 variants.
MAX6383XR22D3+ 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:
- 2.19V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR22D3+ FAQ
1.How can I place an order for MAX6383XR22D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR22D3+ 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 MAX6383XR22D3+ reliable?
The price and inventory of MAX6383XR22D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR22D3+ is usually 5 days.
3.What payment methods are accepted for MAX6383XR22D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR22D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR22D3+?
MAX6383XR22D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR22D3+ 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 MAX6383XR22D3+?
For technical support, including MAX6383XR22D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR22D3+ requirements.
6.How does Aetrix verify that MAX6383XR22D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6383XR22D3+ 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 MAX6383XR22D3+ meets industry standards.
7.What is the process for return or replacement of MAX6383XR22D3+?
All MAX6383XR22D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR22D3+, 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 MAX6383XR22D3+ part is unused and in its original packaging.
Return procedure for MAX6383XR22D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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