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Analog Devices Inc./Maxim Integrated MAX6383LT29D3+T
- Part No.:
- MAX6383LT29D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6383LT29D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
MAX6383LT29D3+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), 140ms minimum reset timeout, and guaranteed operation down to VCC = 1.0V. It monitors single supply voltage in battery-powered embedded systems and portable equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383LT29D3+T datasheet, MAX6383LT29D3+T pinout, MAX6383LT29D3+T application, or MAX6383LT29D3+T equivalent, key selection criteria include its 2.93V threshold accuracy, 140ms timeout timing, open-drain output requiring external pullup, SC70-3 or µDFN-6 package options, and compatibility with critical μP reset input requirements under low-VCC conditions.
Technical Context
The MAX6383LT29D3+T implements a precision bandgap-based voltage comparator with ±2.5% threshold tolerance across −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 140ms (min) reset assertion period after VCC recovers above 2.93V.
As an open-drain active-low device, it requires an external pullup resistor on RESET to interface with standard CMOS/TTL μP reset inputs. The output remains valid and correctly asserted down to VCC = 1.0V, enabling robust reset signaling during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V (nominal), ±2.5% over −40°C to +125°C - ensures accurate detection of 3.3V rail brownout at system level |
| Reset Timeout | 140ms (minimum) - guarantees sufficient μP initialization time after power recovery |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on monitoring applications |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion even during severe undervoltage events |
| Output Type | Open-drain active-low - allows wired-OR reset bus configuration and level translation |
| Temp Range | −40°C to +125°C - qualified for automotive and industrial under-hood environments |
| VCC Transient Immunity | Immune to negative-going transients ≤35µs at 100mV overdrive - suppresses false resets from EMI or switching noise |
Pinout & Package
MAX6383LT29D3+T is available in both 3-pin SC70 (X3+2 outline) and 6-pin µDFN (L611+1 outline) packages. The SC70 variant uses only three terminals: VCC, GND, and RESET (open-drain). The µDFN variant includes two no-connect (N.C.) pins; functional pin mapping is identical.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SC70) / 4 (µDFN) | VCC | Primary supply input and monitored voltage rail - powers internal circuitry and serves as reset trigger source |
| 2 (SC70) / 6 (µDFN) | GND | Analog and digital ground reference - must be low-impedance connection to system ground plane |
| 3 (SC70) / 1 (µDFN) | RESET | Open-drain active-low reset output - requires external pullup resistor (typically 10kΩ–100kΩ) to host VCC or logic rail |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.93V threshold | Eliminates external resistor divider, reducing BOM count and layout area in space-constrained designs |
| 140ms minimum reset timeout | Meets JEDEC JESD8-12B requirement for 3.3V μP power-up stabilization time |
| 3μA supply current at 1.8V | Enables integration into ultra-low-power IoT sensor nodes without impacting battery runtime |
| Valid reset output down to VCC = 1.0V | Prevents spurious release of reset during slow power ramp-up or deep brownout recovery |
| −40°C to +125°C operation | Supports deployment in automotive engine control units and industrial motor drives without derating |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Wearable ECG monitor operating from coin-cell battery with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises 3.0V LDO output to ensure clean μP reset during battery voltage sag below 2.93V. Use Value: 3μA quiescent current extends battery life beyond 2 years; 140ms timeout prevents premature firmware execution before analog front-end stabilization. | Use Scenario: Remote environmental sensor node logging temperature/humidity every 10 minutes using AA batteries. IC Role / Device Role / Timing Role: Monitors main 3.3V supply rail and asserts open-drain reset to MSP430 MCU during brownout. Use Value: Open-drain output allows shared reset bus across multiple peripherals; ±2.5% threshold accuracy ensures consistent trip point across temperature extremes. |
| Automotive Body Control Modules | Industrial PLC I/O Subsystems |
Use Scenario: Under-dash BCM powered from 12V-to-3.3V DC-DC converter subject to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Provides fail-safe reset to ARM Cortex-M4 core when 3.3V rail dips below 2.93V during cranking. Use Value: −40°C to +125°C rating and 35µs transient immunity prevent false resets during engine start; AEC-Q100 qualification confirmed via /V suffix variants. | Use Scenario: DIN-rail mounted I/O module with isolated 5V and 24V supplies powering FPGA and communication ICs. IC Role / Device Role / Timing Role: Resets FPGA configuration logic when primary 3.3V auxiliary rail falls below 2.93V due to overcurrent fault. Use Value: Valid reset assertion down to VCC = 1.0V ensures deterministic behavior during uncontrolled power collapse; SC70-3 footprint minimizes PCB area in dense backplane layouts. |
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 2.93V threshold and 140ms timeout, but push-pull active-low output - no external pullup required | Suitable where board space permits simpler routing and no shared reset bus is needed | Select MAX809TRD3+T if eliminating external components outweighs need for wired-OR capability |
| TPS3808G33DBVR | 2.93V threshold, 200ms timeout (not 140ms), higher 8μA ICC at 1.8V, SOT-23-5 package | Offers manual reset input (MR) and tighter 0.5% threshold accuracy - adds functionality not present in MAX6383LT29D3+T | Choose TPS3808G33DBVR when MR functionality or enhanced accuracy justifies larger footprint and higher current draw |
Compared with MAX809TRD3+T, MAX6383LT29D3+T trades push-pull simplicity for open-drain flexibility in multi-device reset networks; versus TPS3808G33DBVR, it offers lower power and smaller footprint at the cost of missing MR and longer timeout tolerance.
Availability
MAX6383LT29D3+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, automotive body control modules, and industrial PLC I/O subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383LT29D3+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 in industrial, automotive, and computing markets.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy voltage supervision for microprocessor reset in space- and energy-constrained systems where reliability across wide temperature and voltage ranges is critical.
FAQ
What is the exact reset threshold voltage of MAX6383LT29D3+T and how stable is it over temperature?
The MAX6383LT29D3+T has a nominal reset threshold of 2.93V, with guaranteed tolerance of ±2.5% over the full −40°C to +125°C operating range. Its temperature coefficient is 60ppm/°C, meaning threshold drift is limited to ±0.31V across the entire temperature span. This stability is confirmed by production-tested specifications in the Electrical Characteristics table, not design simulation only.
Does MAX6383LT29D3+T include a manual reset input (MR)?
No, MAX6383LT29D3+T does not include a manual reset input. Per the Selector Guide and Pin Description tables, MR functionality is exclusive to MAX6384/MAX6385/MAX6386/MAX6390 variants. MAX6383LT29D3+T provides only VCC monitoring and open-drain reset output - no MR pin is bonded or functional in this specific part number.
What package options are available for MAX6383LT29D3+T and are they interchangeable in layout?
MAX6383LT29D3+T is offered in both 3-pin SC70 (X3+2 outline) and 6-pin µDFN (L611+1 outline) packages. While both share identical electrical functionality and pin numbering for VCC, GND, and RESET, their footprints are physically incompatible - SC70-3 uses a 1.25mm × 0.85mm body with 0.65mm pitch, while µDFN-6 measures 2.0mm × 2.0mm with 0.5mm pitch. Board designs must select one package and cannot substitute without PCB revision.
What is the minimum supply voltage at which MAX6383LT29D3+T guarantees correct reset output state?
MAX6383LT29D3+T guarantees correct reset output logic state down to VCC = 1.0V, as explicitly stated in the Absolute Maximum Ratings and Detailed Description sections. Below 1.0V, the device may not assert or deassert reset reliably. This specification enables safe operation during deep brownout conditions where other supervisors fail to hold reset.
Is MAX6383LT29D3+T RoHS-compliant and what does the '+' suffix indicate?
Yes, MAX6383LT29D3+T is RoHS-compliant and lead(Pb)-free, as confirmed by the '+' character in its part number per Maxim's ordering conventions. The '+' suffix denotes compliance with EU RoHS Directive 2011/65/EU and related environmental standards, verified through material declarations and manufacturing process controls documented in Maxim's package information.
MAX6383LT29D3+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:
- 2.93V
- 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)
MAX6383LT29D3+T FAQ
1.How can I place an order for MAX6383LT29D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383LT29D3+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 MAX6383LT29D3+T reliable?
The price and inventory of MAX6383LT29D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383LT29D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383LT29D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383LT29D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383LT29D3+T?
MAX6383LT29D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383LT29D3+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 MAX6383LT29D3+T?
For technical support, including MAX6383LT29D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383LT29D3+T requirements.
6.How does Aetrix verify that MAX6383LT29D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383LT29D3+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 MAX6383LT29D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383LT29D3+T?
All MAX6383LT29D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383LT29D3+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 MAX6383LT29D3+T part is unused and in its original packaging.
Return procedure for MAX6383LT29D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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