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Analog Devices Inc./Maxim Integrated MAX6383XR42D1-T
- Part No.:
- MAX6383XR42D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR42D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,830
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Product details
Overview
The MAX6383XR42D1-T from Maxim Integrated is a low-power, open-drain active-low microprocessor supervisory circuit designed to monitor +4.20V supply rails in space-constrained embedded systems. It features ±2.5% reset threshold accuracy over -40°C to +125°C, 1ms minimum reset timeout, and guaranteed valid reset output down to VCC = 1V. Used in battery-powered instrumentation and industrial controllers for reliable power-on reset assertion during brownout conditions.
For engineers reviewing the MAX6383XR42D1-T datasheet, MAX6383XR42D1-T pinout, MAX6383XR42D1-T application, or MAX6383XR42D1-T equivalent, key selection criteria include its 4.20V factory-set threshold, 1ms reset timeout, open-drain output requiring external pullup, SC70-3 package footprint, and compatibility with 1.0V–5.5V VCC operation.
Technical Context
This device implements a precision voltage comparator with internal 4.20V reference and a monostable timer that asserts reset for ≥1ms after VCC recovers above threshold. Its open-drain RESET output requires an external pullup resistor and supports wired-OR configurations in multi-rail systems.
It operates across full industrial temperature range (-40°C to +125°C) with only 3μA supply current at 1.8V and maintains reset assertion validity down to VCC = 1V - enabling robust behavior during deep brownouts where many competitors fail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.20V (nominal), ±2.5% over -40°C to +125°C - ensures accurate detection of +4.2V rail collapse without false triggers |
| Reset Timeout | 1ms (minimum) - guarantees sufficient reset pulse width for μP initialization on fast-ramping supplies |
| Supply Current | 3μA at +1.8V - enables decade-long battery life in portable monitoring devices |
| VCC Range | 1.0V to 5.5V - supports operation during severe undervoltage while maintaining reset integrity |
| Output Type | Open-drain active-low - allows level-shifting, bus sharing, and flexible pullup configuration |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Package | 3-pin SC70 (X3+2 outline) - 1.25mm × 0.85mm footprint ideal for compact PCB layouts |
Pinout & Package
MAX6383XR42D1-T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208) with exposed pad not electrically connected. 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 - must be pulled up externally; sinks 3.2mA at VCC ≥ 4.5V when asserted |
| 2 | VCC | Power supply input and monitored voltage rail - accepts 1.0V–5.5V; powers internal comparator and timer |
| 3 | GND | Ground reference - provides return path for VCC and RESET sink current; connects to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.20V threshold | Eliminates external resistor divider; reduces BOM count and layout area in single-rail systems |
| 1ms minimum reset timeout | Meets μP reset hold-time requirements for most Cortex-M0/M3 and PIC microcontrollers |
| 3μA supply current at 1.8V | Enables >10-year battery life in always-on sensor nodes powered by CR2032 cells |
| Valid reset down to VCC = 1V | Prevents spurious release during slow discharge of backup capacitors or Li-ion battery sag |
| SC70-3 package | 0.65mm pitch, 1.25mm × 0.85mm body - fits in <1mm² area, compatible with high-density reflow processes |
Applications
| Industrial Sensor Node | Battery-Powered Data Logger |
|---|---|
Use Scenario: Remote environmental sensor node powered by primary lithium battery with 3.6V nominal output, operating unattended for 5+ years. IC Role / Device Role / Timing Role: Supervises main 3.6V rail and asserts reset if voltage drops below 3.4V due to aging or cold-temperature derating. Use Value: Prevents corrupted flash writes during brownout using guaranteed 1ms reset pulse and ultra-low 3μA quiescent current. | Use Scenario: Portable handheld meter logging analog sensor data to SD card, powered by two AA alkaline cells (1.5V × 2). IC Role / Device Role / Timing Role: Monitors 3.0V regulated rail derived from battery stack; holds μC in reset until rail stabilizes post-power-on. Use Value: Ensures deterministic boot sequence via precise 4.20V threshold and 1ms timeout - critical for EEPROM write integrity. |
| Programmable Logic Controller I/O Module | Medical Point-of-Care Device |
Use Scenario: DIN-rail mounted PLC module with isolated 24V-to-3.3V DC/DC converter powering FPGA and communication ICs. IC Role / Device Role / Timing Role: Acts as secondary supervisor on 3.3V logic rail, asserting open-drain RESET to FPGA and transceivers during input undervoltage events. Use Value: Open-drain output enables shared reset bus across multiple ICs; ±2.5% threshold tolerance prevents nuisance resets in noisy industrial EMI environments. | Use Scenario: Portable ultrasound probe with rechargeable Li-ion battery and low-noise analog front-end requiring clean power sequencing. IC Role / Device Role / Timing Role: Monitors 4.2V battery voltage directly to detect end-of-charge or over-discharge conditions before system shutdown. Use Value: Factory-set 4.20V threshold eliminates calibration overhead; 125°C rating supports operation near thermal hotspots in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1T | Same 4.20V threshold and 1ms timeout, but push-pull active-low output and SC70-3 package | Lacks open-drain flexibility; cannot share reset bus or interface with higher-voltage logic | Select when board already uses push-pull reset and no bus-sharing required |
| TPS3808G12DBVR | 4.20V threshold, 20ms min timeout (not 1ms); SOT-23-5 package with manual reset input | Longer timeout may violate μP minimum reset hold time; extra MR pin adds routing complexity | Select only if manual reset functionality is mandatory and 20ms timeout acceptable |
Compared with MAX809TRD1T, MAX6383XR42D1-T's open-drain output enables multi-device reset coordination without level shifters; compared with TPS3808G12DBVR, its 1ms timeout meets tighter μP initialization windows while eliminating unused MR pin routing.
Availability
MAX6383XR42D1-T is available at Aetrix Electronics and suitable for industrial sensor nodes, battery-powered data loggers, programmable logic controller I/O modules, and medical point-of-care devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383XR42D1-T 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, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers ultra-low-quiescent-current supervisory circuits optimized for battery-backed and energy-harvesting systems where reset accuracy, timing predictability, and thermal robustness are critical.
FAQ
What is the exact reset threshold voltage of the MAX6383XR42D1-T?
The MAX6383XR42D1-T has a factory-set nominal reset threshold of +4.20V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This means the actual threshold falls between +4.10V and +4.31V at any temperature within spec, ensuring reliable detection of 4.2V rail failures without false triggering.
Does the MAX6383XR42D1-T require an external pullup resistor on the RESET pin?
Yes, the MAX6383XR42D1-T features an open-drain active-low RESET output, so an external pullup resistor is mandatory. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. The device does not include an internal pullup, and omission will result in undefined reset logic levels.
What is the minimum reset timeout period specified for the MAX6383XR42D1-T?
The MAX6383XR42D1-T provides a minimum reset timeout period of 1ms after VCC rises above the 4.20V threshold. This value is guaranteed across temperature and supply voltage, satisfying the reset hold-time requirements of most modern microcontrollers including ARM Cortex-M series and Microchip PIC devices.
Can the MAX6383XR42D1-T operate reliably at VCC = 1.0V?
Yes, the MAX6383XR42D1-T guarantees correct reset output state (asserted or deasserted) down to VCC = 1.0V. This capability ensures deterministic behavior during deep brownout conditions where other supervisors may release reset prematurely, making it suitable for applications with large bulk capacitors or Li-ion batteries discharging below 3.0V.
Which package type and footprint does the MAX6383XR42D1-T use?
The MAX6383XR42D1-T uses a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm with 0.65mm pin pitch. This RoHS-compliant, lead-free package is optimized for high-density PCB assembly and reflow soldering, and is identical in footprint to the MAX809 series.
MAX6383XR42D1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.2V
- 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
MAX6383XR42D1-T FAQ
1.How can I place an order for MAX6383XR42D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR42D1-T 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 MAX6383XR42D1-T reliable?
The price and inventory of MAX6383XR42D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR42D1-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR42D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR42D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR42D1-T?
MAX6383XR42D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR42D1-T 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 MAX6383XR42D1-T?
For technical support, including MAX6383XR42D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR42D1-T requirements.
6.How does Aetrix verify that MAX6383XR42D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR42D1-T 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 MAX6383XR42D1-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR42D1-T?
All MAX6383XR42D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR42D1-T, 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 MAX6383XR42D1-T part is unused and in its original packaging.
Return procedure for MAX6383XR42D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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