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Analog Devices Inc./Maxim Integrated MAX6383LT26D3+T
- Part No.:
- MAX6383LT26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6383LT26D3+T.pdf
- Description:
- IC MPU/RESET CIRC 2.63V 6-UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,074
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Product details
Overview
MAX6383LT26D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.63V reset threshold (±2.5% over –40°C to +125°C), 140ms minimum reset timeout, and 3μA supply current at +1.8V. It monitors VCC in battery-powered embedded systems and ensures reliable μP initialization during brownout conditions.
For engineers reviewing the MAX6383LT26D3+T datasheet, MAX6383LT26D3+T pinout, MAX6383LT26D3+T application, or MAX6383LT26D3+T equivalent, key selection criteria include open-drain reset compatibility with shared bus lines, guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy across automotive temperature range, and SC70-3 package footprint constraints.
Technical Context
The MAX6383LT26D3+T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 2.63V threshold, with internal timer asserting reset for ≥140ms after VCC recovers. Its open-drain RESET output requires an external pullup resistor and remains valid down to VCC = 1V, enabling robust reset signaling in low-voltage power rails.
No manual reset (MR) input or auxiliary RESET IN comparator is integrated-this variant is optimized for single-supply monitoring only. The device uses BiCMOS process technology and operates across –40°C to +125°C, meeting AEC-Q100 requirements for automotive-grade reliability when ordered with /V suffix.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (nominal), ±2.5% over –40°C to +125°C - ensures accurate brownout detection across full automotive temperature range |
| Reset Timeout | 140ms (minimum) - guarantees sufficient μP hold time for stable power-up sequencing |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | 1.0V to 5.5V - supports reset assertion even during deep brownout (down to 1V) |
| Output Type | Open-drain active-low - allows wired-OR configuration with other reset sources on shared reset bus |
| Package | 3-pin SC70 - 1.25mm × 0.85mm footprint ideal for space-constrained portable designs |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
MAX6383LT26D3+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with 0.65mm pitch and exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset signal output; requires external pullup; sinks ≥80µA at VCC ≥ 1.0V with VOL ≤ 0.3V |
| 2 | VCC | Main supply input (1.0V–5.5V); also monitored voltage source for reset threshold comparison |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection for comparator stability |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±2.5% tolerance over –40°C to +125°C eliminates need for external resistor divider calibration |
| Ultra-low quiescent current | 3μA at +1.8V enables >10-year battery life in always-on monitoring nodes |
| Valid reset down to VCC = 1V | Ensures deterministic μP state retention during severe undervoltage events without external level-shifting |
| Open-drain output architecture | Supports multi-source reset bus arbitration and mixed-voltage system interfacing (e.g., 3.3V μP with 1.8V domain) |
| AEC-Q100 qualified option | Available with /V suffix for automotive applications requiring validated reliability and traceable manufacturing |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Coin-cell–powered glucose monitor performing periodic self-test and wireless transmission. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during battery voltage sag below 2.63V to prevent corrupted sensor readings or BLE transmission errors. Use Value: 3μA supply current extends battery life beyond 5 years; 140ms timeout ensures complete ADC and radio initialization before firmware execution. | Use Scenario: Door module detecting power loss during vehicle ignition cycle transitions. IC Role / Device Role / Timing Role: Single-supply reset supervisor monitoring 3.3V domain rail; asserts open-drain RESET to microcontroller upon VCC drop during start-stop events. Use Value: ±2.5% threshold accuracy over –40°C to +125°C prevents false resets in engine bay environments; SC70-3 footprint saves PCB area in tight ECU layouts. |
| Industrial PLC I/O Submodules | Smart Energy Meters |
Use Scenario: DIN-rail mounted I/O expander losing main 24V supply and switching to backup supercapacitor. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output; generates clean reset pulse to ARM Cortex-M0+ during switchover transients. Use Value: Open-drain output interfaces directly with µC's active-low reset pin without level translation; 140ms timeout accommodates supercapacitor discharge settling time. | Use Scenario: Revenue-grade meter operating from split-phase AC with isolated DC/DC converter powering MCU domain. IC Role / Device Role / Timing Role: Resets metering SoC when 1.8V core rail dips due to transformer saturation or lightning-induced surges. Use Value: Valid reset assertion down to VCC = 1V prevents latch-up during fast transients; 2.63V threshold aligns precisely with 1.8V rail UVLO margin per IEC 62053-21. |
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 2.63V threshold and 140ms timeout, but push-pull active-low output; no open-drain capability | Requires dedicated reset line; incompatible with wired-OR bus topologies | Select when board layout lacks space for external pullup or when driving single-load reset pin directly |
| TPS3808G33DBVR | 2.93V threshold (not 2.63V); 200ms timeout; higher 12μA ICC at 1.8V; SOT-23-5 package | Higher threshold limits use in 2.5V/2.8V systems; larger footprint increases PCB cost | Choose only if 2.93V threshold matches system UVLO margin and SOT-23-5 is already standardized in BOM |
Compared with MAX809TRD3+T and TPS3808G33DBVR, MAX6383LT26D3+T uniquely delivers open-drain reset, ultra-low 3μA current, and precise 2.63V threshold in a 3-pin SC70 - making it optimal for space- and power-constrained multi-source reset architectures.
Availability
MAX6383LT26D3+T is available at Aetrix Electronics and suitable for portable medical sensors, automotive body control modules, industrial PLC I/O submodules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383LT26D3+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.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits optimized for battery-operated and automotive systems where reset integrity, small size, and wide temperature operation are critical.
FAQ
What is the exact reset threshold voltage of MAX6383LT26D3+T and how stable is it over temperature?
The MAX6383LT26D3+T has a factory-set nominal reset threshold of 2.63V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This specification is confirmed in the Electrical Characteristics table of the official datasheet, and the threshold exhibits a tempco of 60ppm/°C, ensuring predictable behavior in automotive and industrial thermal environments. The MAX6383LT26D3+T achieves this stability using a precision bandgap reference and laser-trimmed resistive network.
Does MAX6383LT26D3+T include a manual reset (MR) input or auxiliary voltage monitor?
No, MAX6383LT26D3+T does not include a manual reset (MR) input or auxiliary RESET IN comparator. As confirmed by the Selector Guide and Pin Configurations section, only MAX6384–MAX6386 and MAX6390 feature MR, while MAX6387–MAX6389 include RESET IN. The MAX6383LT26D3+T is a minimal-feature variant designed exclusively for single-supply VCC monitoring with open-drain reset output.
What is the minimum supply voltage at which MAX6383LT26D3+T guarantees correct reset output logic state?
The MAX6383LT26D3+T guarantees valid reset output logic state down to VCC = 1.0V, as explicitly stated in both the General Description and Absolute Maximum Ratings sections. Below 1.0V, reset behavior is not specified. This capability ensures deterministic μP reset assertion during deep brownout events common in battery-depleted or poorly regulated systems - a key differentiator versus competitors that specify validity only down to 1.5V or higher.
Which package type and footprint does MAX6383LT26D3+T use, and is it RoHS-compliant?
MAX6383LT26D3+T uses the 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm with 0.65mm pin pitch. The "+T" suffix confirms lead(Pb)-free and RoHS-compliant construction. This ultra-compact package is optimized for space-constrained portable and automotive applications where board real estate is at a premium.
Can MAX6383LT26D3+T be used in automotive applications, and what qualification does it meet?
Yes, MAX6383LT26D3+T is qualified to AEC-Q100 Grade 1 (–40°C to +125°C) when ordered with the /V suffix (e.g., MAX6383LT26D3/V+T). While the base MAX6383LT26D3+T meets the same temperature range and reliability testing, the /V version includes additional automotive-specific documentation, traceability, and manufacturing controls. The datasheet explicitly states AEC-Q100 qualification and references ordering information for /V trim versions.
MAX6383LT26D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- 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)
MAX6383LT26D3+T FAQ
1.How can I place an order for MAX6383LT26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383LT26D3+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 MAX6383LT26D3+T reliable?
The price and inventory of MAX6383LT26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383LT26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383LT26D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383LT26D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383LT26D3+T?
MAX6383LT26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383LT26D3+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 MAX6383LT26D3+T?
For technical support, including MAX6383LT26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383LT26D3+T requirements.
6.How does Aetrix verify that MAX6383LT26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383LT26D3+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 MAX6383LT26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383LT26D3+T?
All MAX6383LT26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383LT26D3+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 MAX6383LT26D3+T part is unused and in its original packaging.
Return procedure for MAX6383LT26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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