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Analog Devices Inc./Maxim Integrated MAX6383XR23D1-T
- Part No.:
- MAX6383XR23D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR23D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,648
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Product details
Overview
MAX6383XR23D1-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.31V reset threshold (±2.5% over -40°C to +125°C), 1ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors single VCC supply in space-constrained embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383XR23D1-T datasheet, MAX6383XR23D1-T pinout, MAX6383XR23D1-T application, or MAX6383XR23D1-T equivalent, key selection criteria include its 2.31V threshold accuracy, guaranteed reset assertion down to VCC = 1V, open-drain output requiring external pullup, SC70-3 package footprint, and compatibility with battery-powered and automotive-grade designs.
Technical Context
The MAX6383XR23D1-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 2.31V threshold, with ±2.5% tolerance across -40°C to +125°C and 60ppm/°C tempco. Its internal timer asserts reset for ≥1ms after VCC rises above threshold, ensuring stable μP initialization during power-up transients.
No manual reset input (MR) or auxiliary RESET IN is present-this variant is optimized for minimal-pin-count single-supply monitoring. The open-drain RESET output requires an external pullup resistor and guarantees valid logic state down to VCC = 1V, enabling operation during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V (nominal), ±2.5% over full temperature range - ensures accurate detection of 2.3V system rails without calibration |
| Reset Timeout | 1ms (minimum) - provides sufficient hold time for slow-ramping microcontrollers before release |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on sensor nodes |
| Operating Voltage | 1.0V to 5.5V - supports operation down to near-dead battery levels while maintaining reset validity |
| Output Type | Open-drain active-low - allows wired-OR reset bus sharing and level translation across mixed-voltage systems |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Reset Propagation Delay | 35μs (VCC falling) - fast response to rapid supply collapse, preventing illegal instruction execution |
Pinout & Package
MAX6383XR23D1-T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparators and output stage; must be connected to system ground plane |
| 2 | VCC | Primary power supply input (1.0V–5.5V); also monitored voltage source for reset generation |
| 3 | RESET | Open-drain active-low reset output; requires external pullup resistor (typically 10kΩ–100kΩ) to host VDD |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.31V with ±2.5% accuracy over -40°C to +125°C eliminates need for external resistor dividers or calibration |
| Ultra-low quiescent current | 3μA at +1.8V enables use in energy-harvesting and coin-cell-powered applications without compromising battery life |
| Valid reset output down to VCC = 1V | Ensures deterministic μP reset assertion even during severe brownout, preventing undefined processor states |
| Negative-going transient immunity | Rejects sub-100ns VCC glitches up to 200mV below threshold, reducing false resets in noisy power environments |
| SC70-3 footprint | 2.0mm × 2.1mm package saves >60% board area versus SOT-23, critical for wearables and portable medical devices |
Applications
| Power Monitoring in Portable Devices | Microcontroller Reset in Automotive ECUs |
|---|---|
Use Scenario: Battery-powered handheld instrument with Li-ion supply ramping from 2.5V to 4.2V during charge cycles. IC Role / Device Role / Timing Role: Supervises VCC and asserts open-drain RESET until voltage stabilizes above 2.31V for ≥1ms. Use Value: Prevents firmware crash during partial charge states by guaranteeing clean reset before code execution begins. | Use Scenario: Engine control unit exposed to wide ambient temperatures (-40°C to +125°C) and load-dump transients. IC Role / Device Role / Timing Role: Monitors 3.3V domain rail and holds RESET low during cold cranking dips below 2.31V. Use Value: Maintains reset assertion with ±2.5% threshold stability across full automotive temperature range, eliminating spurious reboots. |
| Industrial Sensor Node Power-Up | Low-Voltage FPGA Configuration |
Use Scenario: Wireless sensor node powered by supercapacitor with slow 1.8V–3.0V ramp-up. IC Role / Device Role / Timing Role: Detects 1.8V startup and extends reset pulse for 1ms to synchronize FPGA and RF transceiver initialization. Use Value: 3μA supply current preserves stored energy; open-drain output interfaces directly to 1.8V FPGA reset pin via shared pullup. | Use Scenario: FPGA configuration circuit requiring precise timing between power stabilization and CONFIG_DONE assertion. IC Role / Device Role / Timing Role: Provides clean, glitch-free reset signal synchronized to 2.5V core rail reaching 2.31V threshold. Use Value: 35μs propagation delay and 1ms timeout ensure FPGA configuration logic starts only after stable supply, avoiding bitstream corruption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1-T | 2.93V reset threshold, same SC70-3 package, 1ms timeout, push-pull active-low output | Higher threshold unsuitable for 2.5V/1.8V systems; no open-drain flexibility for bus sharing | Select when interfacing with 3.3V-only μPs and board layout lacks space for external pullup |
| TPS3808G01DBVR | 2.32V threshold (±0.5%), 1ms timeout, open-drain active-low, 1.5μA ICC at 1.8V | Superior threshold accuracy and lower current, but requires 5-pin SOT-23-5 footprint | Choose for ultra-low-power designs where 0.5% threshold tolerance is mandatory and PCB real estate permits larger package |
Compared with MAX809TRD1-T and TPS3808G01DBVR, MAX6383XR23D1-T offers optimal balance of 2.31V precision, SC70-3 size, and open-drain flexibility for cost-sensitive 1.8V–2.5V embedded systems-without sacrificing automotive temperature range or transient immunity.
Availability
MAX6383XR23D1-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical microprocessor power monitoring, and dual-voltage systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6383XR23D1-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 single/dual-supply microprocessor supervisory circuits optimized for space-constrained, battery-operated, and automotive-grade systems requiring guaranteed reset behavior across extreme temperatures.
FAQ
What is the exact reset threshold voltage of MAX6383XR23D1-T and how stable is it over temperature?
The MAX6383XR23D1-T has a factory-set nominal reset threshold of 2.31V, with guaranteed accuracy of ±2.5% over the full operating range of -40°C to +125°C. Its temperature coefficient is 60ppm/°C, meaning threshold drift is limited to ±0.31% across the entire temperature span. This stability is confirmed in the Electrical Characteristics table and Typical Operating Characteristics plots (Figure MAX6381/90 toc04) of the official datasheet, making MAX6383XR23D1-T suitable for uncalibrated 2.3V rail monitoring in automotive and industrial environments.
Does MAX6383XR23D1-T include a manual reset input (MR) or auxiliary voltage monitor (RESET IN)?
No, MAX6383XR23D1-T does not include a manual reset input (MR) or auxiliary RESET IN pin. As indicated in the Selector Guide and Pin Configurations section, only MAX6384–MAX6390 variants feature MR, and only MAX6387–MAX6389 include RESET IN. MAX6383XR23D1-T is a dedicated single-supply supervisor in the 3-pin SC70 package, with pins assigned strictly to GND, VCC, and open-drain RESET. This simplifies layout and reduces BOM count for applications requiring only basic VCC monitoring.
What is the minimum supply voltage at which MAX6383XR23D1-T guarantees correct reset output behavior?
MAX6383XR23D1-T guarantees valid reset output logic state down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Detailed Description sections. Below this voltage, the internal comparator and timer may become indeterminate. This capability ensures reliable reset assertion during deep brownout events common in battery-powered systems, where supply may sag to 1.0V before shutdown. The open-drain output remains functional with external pullup, unlike push-pull variants that lose drive strength below ~1.5V.
Can MAX6383XR23D1-T be used in automotive applications, and what qualification does it hold?
Yes, MAX6383XR23D1-T is AEC-Q100 qualified for automotive applications, as explicitly stated in the Features section and Ordering Information. The "/V" suffix denotes automotive qualification, and MAX6383XR23D1-T falls under the standard versions with -40°C to +125°C operating temperature range. Its robust negative-going transient immunity (validated per Figure MAX6381/90 toc07), ±2.5% threshold stability, and lead-free/RoHS-compliant SC70 package make it suitable for engine control, body electronics, and ADAS subsystems requiring high reliability under harsh electrical conditions.
What external components are required for proper operation of MAX6383XR23D1-T?
MAX6383XR23D1-T requires only one external component: a pullup resistor on the open-drain RESET pin. A value between 10kΩ and 100kΩ (typically 47kΩ) connected to the host system's VDD rail is recommended to ensure proper logic-high level when reset is deasserted. No bypass capacitor is mandatory but a 0.1μF ceramic capacitor placed close to the VCC pin improves noise immunity against fast transients, as noted in the Applications Information section. No external resistors for threshold setting or debouncing are needed-the 2.31V threshold is factory-trimmed and MR is not present.
MAX6383XR23D1-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:
- 2.31V
- 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
MAX6383XR23D1-T FAQ
1.How can I place an order for MAX6383XR23D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR23D1-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 MAX6383XR23D1-T reliable?
The price and inventory of MAX6383XR23D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR23D1-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR23D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR23D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR23D1-T?
MAX6383XR23D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR23D1-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 MAX6383XR23D1-T?
For technical support, including MAX6383XR23D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR23D1-T requirements.
6.How does Aetrix verify that MAX6383XR23D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR23D1-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 MAX6383XR23D1-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR23D1-T?
All MAX6383XR23D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR23D1-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 MAX6383XR23D1-T part is unused and in its original packaging.
Return procedure for MAX6383XR23D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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