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Analog Devices Inc./Maxim Integrated MAX6383XR29D5-T
- Part No.:
- MAX6383XR29D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR29D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,005
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Product details
Overview
MAX6383XR29D5-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.93V reset threshold (±2.5% over -40°C to +125°C), 280ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors single power rail VCC in battery-powered embedded systems requiring reliable brownout detection and clean power-up sequencing.
For engineers reviewing the MAX6383XR29D5-T datasheet, MAX6383XR29D5-T pinout, MAX6383XR29D5-T application, or MAX6383XR29D5-T equivalent, key selection criteria include its open-drain reset architecture, guaranteed valid output down to VCC = 1V, ±2.5% threshold accuracy across automotive temperature range, and compatibility with 3-pin SC70 footprint for space-constrained PCB layouts.
Technical Context
The MAX6383XR29D5-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 2.93V threshold, with internal timer ensuring reset remains asserted for ≥280ms after VCC recovers. Its open-drain RESET output requires an external pullup resistor and supports wired-OR configurations in multi-rail systems.
No manual reset input (MR) or auxiliary RESET IN pin is present-this variant is optimized for simple single-supply monitoring without user-initiated reset or dual-voltage supervision. The device operates from 1.0V to 5.5V supply and guarantees correct logic state of RESET down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over -40°C to +125°C - ensures stable trip point across automotive temperature range without calibration. |
| Reset Timeout | 280ms minimum - provides sufficient hold time for μP initialization and peripheral stabilization after power recovery. |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Output Type | Open-drain active-low - allows level translation, shared-bus reset signaling, and compatibility with mixed-voltage systems. |
| Operating Voltage | 1.0V to 5.5V - supports direct interface with 1.2V/1.8V/2.5V/3.3V/5V rails without external regulators. |
| Reset Validity | Guaranteed down to VCC = 1V - prevents spurious release during deep brownout conditions. |
| Threshold Tempco | 60ppm/°C - minimizes drift-induced false resets in thermally varying environments. |
Pinout & Package
MAX6383XR29D5-T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, with RoHS-compliant lead-free finish (+T suffix). 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; leakage <1.0μA when deasserted. |
| 2 - VCC | Power supply input and monitored voltage rail | Accepts 1.0V–5.5V; supplies internal circuitry and serves as primary reset trigger source. |
| 3 - GND | Ground reference | Common return path for all internal functions and reset comparator reference. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% accuracy over full -40°C to +125°C range - eliminates need for external resistor dividers or calibration. |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in portable medical devices and remote sensors. |
| Open-drain reset architecture | Enables wired-OR reset bus sharing across multiple ICs and supports mixed-voltage system-level reset coordination. |
| Negative-going transient immunity | Rejects VCC glitches ≤100µs wide when overdrive exceeds 100mV - improves robustness in noisy power environments. |
| Valid reset output down to 1V VCC | Ensures deterministic reset assertion during deep undervoltage events, preventing partial μP execution. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meters and ECG patches requiring multi-year operation on CR2032 cells. IC Role / Device Role / Timing Role: Monitors 2.8V Li-ion supply voltage and asserts open-drain RESET to ARM Cortex-M0+ MCU upon brownout. Use Value: 3μA supply current extends battery life beyond 5 years; 280ms timeout ensures complete ADC and RF subsystem initialization before firmware execution. |
Use Scenario: DIN-rail mounted digital input modules exposed to 24VDC industrial power with ripple and transients. IC Role / Device Role / Timing Role: Supervises local 3.3V LDO output feeding FPGA configuration memory and communication UART. Use Value: ±2.5% threshold accuracy prevents false resets during 10% line variation; open-drain output interfaces directly to FPGA's active-low PROG_B pin. |
| Automotive Body Control Units | Smart Home Hub Power Management |
|
Use Scenario: 12V-to-3.3V converted subsystems in door module ECUs operating from -40°C to +125°C ambient. IC Role / Device Role / Timing Role: Provides AEC-Q100–qualified reset signal to Infineon AURIX TC2xx microcontroller during cold-crank events. Use Value: Guaranteed operation at VCC = 1V prevents premature reset release during 6V cranking dips; 2.93V threshold matches 3.3V rail tolerance. |
Use Scenario: Wi-Fi/BLE hub powered by USB-C PD (5V) with internal buck converters generating 1.2V core and 3.3V I/O rails. IC Role / Device Role / Timing Role: Monitors 3.3V I/O supply to ensure proper boot sequence of ESP32-WROOM-32 before enabling Zigbee radio. Use Value: 280ms timeout aligns with ESP32's 250ms internal reset hold requirement; SC70 footprint saves space on dense 4-layer PCB. |
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 | 2.93V threshold, 240ms timeout, push-pull active-low output, 3-pin SOT23 | Lacks open-drain flexibility; incompatible with wired-OR buses or level-shifted reset domains | Select when board layout already uses SOT23 footprint and no shared reset bus is required. |
| TPS3808G33DBVR | 3.3V threshold, 200ms timeout, open-drain active-low, 5-pin SOT23 | Higher threshold unsuitable for 2.8–3.0V rails; requires 5-pin layout change and external pullup | Choose only if redesigning for 3.3V systems and needing TI's enhanced ESD rating (4kV HBM). |
Compared with MAX809TRD3-T and TPS3808G33DBVR, MAX6383XR29D5-T uniquely delivers 2.93V precision threshold in ultra-small SC70 with open-drain output-critical for compact, multi-rail, or battery-sensitive designs where timing margin and footprint are constrained.
Availability
MAX6383XR29D5-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart home hub power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383XR29D5-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, emphasizing low power, high reliability, and AEC-Q100 qualification.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-powered and automotive systems where accurate voltage monitoring, minimal current draw, and guaranteed reset behavior under brownout are essential.
FAQ
What is the exact reset threshold voltage of MAX6383XR29D5-T and how stable is it over temperature?
The MAX6383XR29D5-T has a factory-set nominal reset threshold of 2.93V, with guaranteed accuracy of ±2.5% over the full -40°C to +125°C operating range. Its 60ppm/°C tempco ensures minimal drift, making it suitable for automotive and industrial applications where thermal stability is critical. This specification is confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6383XR29D5-T include a manual reset input (MR) or auxiliary RESET IN pin?
No, MAX6383XR29D5-T does not include a manual reset input (MR) or auxiliary RESET IN pin. It is a dedicated single-supply supervisory circuit with only RESET, VCC, and GND terminals. MR is present only on MAX6384/MAX6385/MAX6386/MAX6390 variants, while RESET IN appears exclusively on MAX6387/MAX6388/MAX6389 models.
What package type and footprint does MAX6383XR29D5-T use, and is it RoHS-compliant?
MAX6383XR29D5-T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm. The "+T" suffix confirms it is lead(Pb)-free and RoHS-compliant. This compact footprint is ideal for space-constrained PCBs in portable and wearable electronics.
How does the open-drain RESET output of MAX6383XR29D5-T differ from push-pull alternatives?
The open-drain RESET output of MAX6383XR29D5-T requires an external pullup resistor and enables wired-OR connections with other reset sources-unlike push-pull outputs that drive both high and low. This architecture supports level translation (e.g., 3.3V device resetting a 1.8V processor) and shared reset busing, which is essential in complex multi-rail systems.
What is the minimum supply voltage at which MAX6383XR29D5-T guarantees correct RESET output behavior?
MAX6383XR29D5-T guarantees valid RESET output state down to VCC = 1.0V, ensuring deterministic reset assertion even during severe brownout conditions. This is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics sections and distinguishes it from many competitors that require ≥1.5V for reliable operation.
MAX6383XR29D5-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:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR29D5-T FAQ
1.How can I place an order for MAX6383XR29D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR29D5-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 MAX6383XR29D5-T reliable?
The price and inventory of MAX6383XR29D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR29D5-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR29D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR29D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR29D5-T?
MAX6383XR29D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR29D5-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 MAX6383XR29D5-T?
For technical support, including MAX6383XR29D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR29D5-T requirements.
6.How does Aetrix verify that MAX6383XR29D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR29D5-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 MAX6383XR29D5-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR29D5-T?
All MAX6383XR29D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR29D5-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 MAX6383XR29D5-T part is unused and in its original packaging.
Return procedure for MAX6383XR29D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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