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Analog Devices Inc./Maxim Integrated MAX6383LT25D3+
- Part No.:
- MAX6383LT25D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6383LT25D3+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,061
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Product details
Overview
MAX6383LT25D3+ from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.5V reset threshold (±2.5% over -40°C to +125°C), and 140ms 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 = 1V. Used in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383LT25D3+ datasheet, MAX6383LT25D3+ pinout, MAX6383LT25D3+ application, or MAX6383LT25D3+ equivalent, key selection criteria include its open-drain reset architecture, 2.5V threshold accuracy, 140ms timeout, SC70-3 package footprint, and compatibility with dual-voltage monitoring systems where auxiliary reset input is not required.
Technical Context
The MAX6383LT25D3+ implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C, coupled to a temperature-stable RC timer for deterministic 140ms reset assertion after VCC recovery. Its open-drain RESET output requires an external pullup resistor and supports mixed-voltage I/O interfacing.
No manual reset (MR) or auxiliary RESET IN inputs are integrated - this variant is optimized for minimal-pin-count, single-supply monitoring applications. The device operates continuously from VCC = 1.0V to 5.5V and maintains guaranteed logic-state validity of RESET down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.50V nominal, ±2.5% over -40°C to +125°C - ensures accurate brownout detection across automotive/industrial temperature range |
| Reset Timeout Period | 140ms minimum - provides sufficient hold time for microcontroller initialization and clock stabilization |
| Supply Current | 3μA at VCC = +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage Range | 1.0V to 5.5V - supports direct interface with 1.2V/1.8V/2.5V/3.3V/5V rails without level shifting |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration and voltage-level translation via external pullup |
| Reset Assertion Validity | Guaranteed down to VCC = 1.0V - prevents spurious release during deep brownout or slow power ramp-down |
| Package | 3-pin SC70 (X3+2 outline) - 1.25mm × 0.85mm footprint ideal for space-constrained portable designs |
Pinout & Package
MAX6383LT25D3+ is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with pins arranged in standard top-view orientation: Pin 1 = RESET (open-drain active-low), Pin 2 = VCC, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; requires external pullup resistor; sinks up to 3.2mA at VCC ≥ 4.5V |
| 2 | VCC | Main supply input and monitored voltage rail; accepts 1.0V–5.5V; powers internal comparator and timer |
| 3 | GND | Analog/digital ground reference; must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.5V reset threshold | Eliminates external resistor divider; reduces BOM count and layout area in cost-sensitive designs |
| 140ms minimum reset timeout | Ensures full microcontroller core and peripheral initialization before firmware execution resumes |
| 3μA supply current at 1.8V | Extends battery life in always-on edge nodes - e.g., >10 years on CR2032 at 10μA average system load |
| Open-drain RESET with 0.3V VOL @ 80μA | Enables robust interfacing to 1.8V/2.5V/3.3V logic families using appropriate pullup voltage |
| Valid operation down to VCC = 1.0V | Prevents premature reset deassertion during undervoltage transients or capacitor discharge decay |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG patch powered by single Li-SOCl₂ cell with gradual voltage decay over 5+ years. IC Role / Device Role / Timing Role: Monitors VCC to assert RESET before supply drops below MCU operating minimum (1.71V), preventing corrupted memory writes. Use Value: 3μA quiescent current extends usable battery life; 2.5V threshold aligns with safe shutdown margin above MCU VDD min. |
Use Scenario: DIN-rail mounted analog input module exposed to 24VDC field supply with ±15% ripple and cold-start surges. IC Role / Device Role / Timing Role: Provides clean power-on reset pulse to ARM Cortex-M4 MCU after 24V rail stabilizes, ignoring sub-100µs transients. Use Value: Negative-going transient immunity avoids false resets; 140ms timeout accommodates slow bulk capacitor charging. |
| Smart Utility Meters | Automotive Body Control Units |
|
Use Scenario: AMI meter with dual-rail design: 3.3V for RF SoC and 1.8V for metrology ASIC, both derived from buck converter. IC Role / Device Role / Timing Role: Supervises primary 3.3V rail; open-drain RESET interfaces directly to 1.8V logic via 1.8V pullup, enabling single-reset signal for both domains. Use Value: Eliminates need for level shifter; ±2.5% threshold tolerance ensures reliable detection despite converter load regulation drift. |
Use Scenario: BCM powered from vehicle battery (9V–16V) with LDO generating 5V/3.3V rails; subject to load-dump and cold-crank events. IC Role / Device Role / Timing Role: Resets microcontroller during battery voltage sag below 2.5V during cranking, with guaranteed assertion until VCC recovers and holds for 140ms. Use Value: AEC-Q100 qualified variants available; 1.0V operational floor prevents reset release during post-crank voltage undershoot. |
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 | Same 2.5V threshold and 140ms timeout, but push-pull active-low output; no open-drain capability | Requires dedicated reset rail voltage matching VCC; cannot share pullup with other devices | Select when board already uses push-pull reset topology and no wired-OR is needed |
| TPS3808G33DBVR | 2.33V threshold (not 2.5V); 200ms timeout (not 140ms); 1.5μA typical ICC at 3.3V | Lower threshold suits 2.5V systems with tighter margins; longer timeout adds safety margin for complex bootloaders | Select when higher accuracy (0.5% threshold) and lower current at mid-rails are prioritized over exact timing match |
Compared with MAX6383LT25D3+, MAX809TRD3+T offers simpler drive but lacks open-drain flexibility, while TPS3808G33DBVR trades threshold/timing precision for ultra-low current and tighter accuracy - choice depends on whether wired-OR capability, exact 2.5V/140ms alignment, or sub-2μA operation dominates the design requirement.
Availability
MAX6383LT25D3+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart utility meters, and automotive body control units requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6383LT25D3+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family was designed specifically for low-power, precision voltage supervision in space- and energy-constrained embedded systems - emphasizing factory-trimmed thresholds, nanoscale leakage control, and robust transient immunity.
FAQ
What is the reset threshold voltage of the MAX6383LT25D3+ and how accurate is it?
The MAX6383LT25D3+ has a factory-set nominal reset threshold of 2.50V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This specification is validated per the Electrical Characteristics table in the official datasheet, ensuring reliable brownout detection without external calibration components.
Does the MAX6383LT25D3+ include a manual reset input (MR)?
No, the MAX6383LT25D3+ does not feature a manual reset input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which omits MR functionality. Only MAX6384–MAX6390 variants include MR; the MAX6383LT25D3+ is strictly a VCC-only supervisory circuit with open-drain RESET output.
What package type and pin count does the MAX6383LT25D3+ use?
The MAX6383LT25D3+ is supplied in a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm. Pin 1 is RESET (open-drain), Pin 2 is VCC, and Pin 3 is GND - confirmed from the Pin Configurations section of the MAX6381–MAX6390 datasheet.
Can the MAX6383LT25D3+ monitor a second voltage rail?
No, the MAX6383LT25D3+ does not support auxiliary voltage monitoring. It lacks the RESET IN input found only on MAX6387–MAX6389 variants. Its supervision function is limited to the VCC pin alone, making it suitable for single-rail systems where secondary rail monitoring is handled externally or not required.
What is the minimum supply voltage at which the MAX6383LT25D3+ guarantees correct RESET output behavior?
The MAX6383LT25D3+ guarantees valid RESET output logic state down to VCC = 1.0V, as explicitly stated in the Electrical Characteristics table under "Reset Output State Guaranteed Valid Down to VCC = 1V". This ensures reliable reset assertion even during deep brownout conditions before complete power loss.
MAX6383LT25D3+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-µDFN (1.5x1)
MAX6383LT25D3+ FAQ
1.How can I place an order for MAX6383LT25D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383LT25D3+ 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 MAX6383LT25D3+ reliable?
The price and inventory of MAX6383LT25D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383LT25D3+ is usually 5 days.
3.What payment methods are accepted for MAX6383LT25D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383LT25D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383LT25D3+?
MAX6383LT25D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383LT25D3+ 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 MAX6383LT25D3+?
For technical support, including MAX6383LT25D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383LT25D3+ requirements.
6.How does Aetrix verify that MAX6383LT25D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6383LT25D3+ 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 MAX6383LT25D3+ meets industry standards.
7.What is the process for return or replacement of MAX6383LT25D3+?
All MAX6383LT25D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383LT25D3+, 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 MAX6383LT25D3+ part is unused and in its original packaging.
Return procedure for MAX6383LT25D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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