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Analog Devices Inc./Maxim Integrated MAX6383XR24D2-T
- Part No.:
- MAX6383XR24D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR24D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,687
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Product details
Overview
MAX6383XR24D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.40V ±2.5% reset threshold, and 20ms minimum reset timeout period. It monitors VCC from +1.8V to +5.0V while consuming only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1.0V. It is used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383XR24D2-T datasheet, MAX6383XR24D2-T pinout, MAX6383XR24D2-T application, or MAX6383XR24D2-T equivalent, key selection criteria include reset threshold accuracy over temperature (±2.5% from −40°C to +125°C), open-drain output compatibility with mixed-voltage systems, guaranteed operation at VCC ≥ 1.0V, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6383XR24D2-T implements a precision voltage comparator with internal 2.40V reference and hysteresis-free threshold detection. Its reset assertion logic responds to VCC falling below 2.40V, then holds the open-drain RESET output low for a guaranteed minimum 20ms after VCC rises above threshold. The device uses BiCMOS process technology and operates across −40°C to +125°C without external components.
No manual reset (MR) or auxiliary RESET IN inputs are present - this variant is a dedicated single-supply monitor. Its open-drain output requires an external pullup resistor and supports wired-OR configurations, enabling use in multi-rail systems where multiple supervisors share a common reset line.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±2.5% over −40°C to +125°C - ensures accurate brownout detection across automotive/industrial temperature range |
| Reset Timeout Period | 20ms minimum - provides sufficient hold time for μP initialization before release |
| Supply Current | 3μA at +1.8V - enables ultra-low-power operation in battery-backed systems |
| Operating Voltage Range | +1.0V to +5.5V - guarantees functional reset assertion even during deep brownout |
| Output Type | Open-drain active-low - supports level-shifting and shared reset bus architectures |
| VCC Transient Immunity | 35µs max duration at 100mV overdrive - suppresses false resets from short supply glitches |
| Reset Output Validity | Valid down to VCC = 1.0V - ensures deterministic reset state during power ramp-down |
Pinout & Package
MAX6383XR24D2-T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant, lead-free package supports high-density PCB layouts and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset output requiring external pullup; sinks up to 3.2mA at VCC ≥ 4.5V |
| 2 | VCC | Primary supply input and monitored voltage rail; accepts +1.0V to +5.5V |
| 3 | GND | Ground reference for internal comparator and output stage |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.40V with ±2.5% tolerance over full industrial temperature range - eliminates external resistor network |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on monitoring applications |
| Open-drain reset output | Compatible with 1.8V–5.5V I/O domains and supports wired-OR reset busing |
| Negative-going transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive - reduces need for additional filtering |
| Guaranteed operation down to VCC = 1.0V | Ensures predictable reset behavior during uncontrolled power collapse |
Applications
| Portable Medical Sensors | Battery-Powered IoT Endpoints |
|---|---|
Use Scenario: Wearable ECG sensor operating from coin-cell battery with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Monitors main supply rail during sleep/wake transitions and asserts reset if voltage sags below 2.40V during cold start. Use Value: Prevents firmware lockup due to marginal VCC during RF transmission bursts; 20ms timeout aligns with BLE controller boot sequence. |
Use Scenario: LoRaWAN node powered by primary alkaline cells, subject to voltage decay over months of operation. IC Role / Device Role / Timing Role: Detects end-of-life battery drop below 2.40V and forces controlled shutdown via open-drain reset to MCU. Use Value: Enables graceful data save before power loss; open-drain output interfaces directly with 3.3V MCU reset pin without level shifter. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
Use Scenario: DIN-rail mounted I/O expander module exposed to wide ambient temperature swings (−40°C to +85°C). IC Role / Device Role / Timing Role: Supervises 3.3V logic rail powering FPGA configuration and isolated CAN transceivers. Use Value: ±2.5% threshold accuracy ensures consistent reset point across temperature; 3μA ICC minimizes self-heating error contribution. |
Use Scenario: Door module with LIN interface, powered from vehicle battery with load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Provides primary reset supervision for 1.8V microcontroller core supply during cranking events. Use Value: 35µs transient immunity prevents spurious resets during 12V system dips; SC70 package withstands automotive thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR24D2+T | Same 2.40V threshold and 20ms timeout, but push-pull active-low output; higher ICC (7μA typ at +1.8V) | Requires no external pullup; not suitable for wired-OR reset buses | Select when board layout lacks space for pullup resistor or when driving capacitive loads >100pF |
| TPS3808G12DBVR | 2.43V threshold (±0.5% initial), 20ms timeout, open-drain output; ICC = 2.8μA at +1.8V; supports enable input | Includes EN pin for power-gating control; tighter initial threshold tolerance but narrower temp range (−40°C to +125°C same) | Select when system requires conditional reset enable/disable or highest initial accuracy is critical |
Compared with MAX6383XR24D2-T, MAX6326XR24D2+T simplifies BOM by eliminating the pullup resistor but sacrifices bus-sharing capability, while TPS3808G12DBVR offers superior initial accuracy and enable control at the cost of vendor-specific feature integration and slightly different thermal performance.
Availability
MAX6383XR24D2-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT endpoints, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383XR24D2-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 power management, sensing, and interface applications, with emphasis on low-power, high-reliability solutions for industrial and automotive markets.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-constrained and thermally demanding environments, featuring factory-trimmed thresholds, sub-μA quiescent current, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of MAX6383XR24D2-T and how does it vary with temperature?
The MAX6383XR24D2-T has a factory-set nominal reset threshold of 2.40V, with guaranteed tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. At +25°C, the threshold is 2.40V ±1.5%. The tempco is 60ppm/°C, meaning drift is linear and bounded within the ±2.5% band. This specification is confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6383XR24D2-T include a manual reset input (MR) or auxiliary RESET IN pin?
No, MAX6383XR24D2-T does not include MR or RESET IN functionality. It is a minimal three-pin variant (VCC, GND, RESET) designed solely for single-rail VCC supervision. MR is present only on MAX6384–MAX6386 and MAX6390; RESET IN is exclusive to MAX6387–MAX6389. Pin configuration diagrams confirm pins 1–3 are RESET, VCC, and GND respectively, with no fourth pin.
What is the maximum sink current capability of the open-drain RESET output on MAX6383XR24D2-T?
The open-drain RESET output of MAX6383XR24D2-T can sink up to 3.2mA when VCC ≥ 4.5V, 1.2mA when VCC ≥ 2.5V, and 80µA when VCC ≥ 1.0V, with corresponding VOL ≤ 0.4V, ≤ 0.3V, and ≤ 0.3V respectively. These values are specified in the Electrical Characteristics table under "Open-Drain RESET Output Voltage" and define the drive strength for external pullup sizing.
Can MAX6383XR24D2-T operate reliably during fast VCC transients, and what is its immunity specification?
Yes, MAX6383XR24D2-T provides documented immunity to negative-going VCC transients: it will not assert spurious reset for pulses ≤35µs duration when the overdrive (VTH − VCC) is 100mV. This is verified in the Typical Operating Characteristics graph "Maximum Transient Duration vs. Reset Comparator Overdrive". A 0.1µF ceramic capacitor placed near VCC further enhances immunity.
Is MAX6383XR24D2-T qualified for automotive applications, and what packaging options are available?
MAX6383XR24D2-T is not automotive-qualified; it carries the "+T" suffix indicating RoHS-compliant commercial/industrial grade (−40°C to +125°C). Automotive variants use the "/V+T" suffix (e.g., MAX6383XR24D2/V+T) and undergo AEC-Q100 qualification. Packaging is limited to the 3-pin SC70 (X3+2 outline); no μDFN option exists for this specific part number.
MAX6383XR24D2-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:
- 2.4V
- 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
MAX6383XR24D2-T FAQ
1.How can I place an order for MAX6383XR24D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR24D2-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 MAX6383XR24D2-T reliable?
The price and inventory of MAX6383XR24D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR24D2-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR24D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR24D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR24D2-T?
MAX6383XR24D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR24D2-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 MAX6383XR24D2-T?
For technical support, including MAX6383XR24D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR24D2-T requirements.
6.How does Aetrix verify that MAX6383XR24D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR24D2-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 MAX6383XR24D2-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR24D2-T?
All MAX6383XR24D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR24D2-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 MAX6383XR24D2-T part is unused and in its original packaging.
Return procedure for MAX6383XR24D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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