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Analog Devices Inc./Maxim Integrated MAX6383LT23D3+T
- Part No.:
- MAX6383LT23D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6383LT23D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6383LT23D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.31V reset threshold (±2.5% over −40°C to +125°C), and 140ms minimum reset timeout period. It monitors VCC from +1.0V to +5.5V while consuming only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1V - used in battery-powered instrumentation and embedded controllers requiring reliable brownout detection.
For engineers reviewing the MAX6383LT23D3+T datasheet, MAX6383LT23D3+T pinout, MAX6383LT23D3+T application, or MAX6383LT23D3+T equivalent, key selection criteria include its open-drain reset architecture, 2.31V threshold tolerance, 140ms timeout timing, and compatibility with SC70-3 and μDFN-6 packages for space-constrained designs.
Technical Context
The MAX6383LT23D3+T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed internal reference, with hysteresis and temperature-compensated threshold accuracy of ±2.5% across −40°C to +125°C. Its internal timer initiates a guaranteed 140ms reset assertion after VCC recovers above 2.31V.
This device belongs to the MAX6381–MAX6390 family of single-supply supervisors and features an open-drain RESET output requiring an external pullup resistor, no manual reset input (MR), and no auxiliary RESET IN pin - distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V nominal (2.26V min / 2.37V max at +25°C); ±2.5% tolerance over full temperature range ensures robust brownout detection in industrial environments. |
| Reset Timeout Period | 140ms minimum; guarantees μP remains held in reset long enough for power rails to stabilize before code execution resumes. |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered portable instruments without compromising supervision reliability. |
| Operating Voltage Range | +1.0V to +5.5V; supports direct interface with core logic supplies (1.2V, 1.8V, 2.5V, 3.3V, 5V) without external level shifting. |
| Reset Output Type | Open-drain active-low; allows wired-OR configuration with other reset sources and flexible pullup voltage selection (e.g., 1.8V or 3.3V). |
| Temperature Range | −40°C to +125°C; qualified for under-hood automotive modules and industrial control units operating in harsh thermal conditions. |
| VCC Immunity | Negative-going transient immunity up to 35µs at 100mV overdrive; suppresses false resets caused by short supply glitches. |
Pinout & Package
MAX6383LT23D3+T is available in 3-pin SC70 (package code X3+2) and 6-pin μDFN (package code L611+1). The SC70 variant uses pins 1 (RESET), 2 (VCC), and 3 (GND); the μDFN variant uses pins 1 (RESET), 4 (VCC), and 6 (GND), with pins 2, 3, and 5 as no-connect (N.C.). Both packages are RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SC70) / 1 (μDFN) | RESET (open-drain, active-low) | Drives low during reset condition; requires external pullup resistor to define logic-high voltage level and sink current capability. |
| 2 (SC70) / 4 (μDFN) | VCC | Main supply input and monitored rail; powers internal circuitry and serves as reference for reset threshold comparison. |
| 3 (SC70) / 6 (μDFN) | GND | Analog and digital ground reference; must be connected to system ground plane with low-impedance path to ensure noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.31V with ±2.5% accuracy over −40°C to +125°C eliminates need for external resistor dividers or calibration in production. |
| Ultra-low quiescent current | 3μA at +1.8V enables integration into always-on subsystems without impacting battery life in portable medical or sensor devices. |
| Valid reset output down to VCC = 1V | Ensures deterministic μP initialization even during deep brownout events where supply collapses below typical logic thresholds. |
| Open-drain reset architecture | Supports multi-source reset bus sharing (e.g., watchdog, power-fail, manual reset) without contention or level-shifting components. |
| Negative transient immunity | Rejects VCC glitches ≤35µs duration at 100mV overdrive, reducing false triggers in electrically noisy industrial or automotive environments. |
Applications
| Battery-Powered Instrumentation | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Handheld multimeter with Li-ion battery and 1.8V/3.3V dual-rail MCU subsystem. IC Role / Device Role / Timing Role: Monitors 1.8V core supply and asserts open-drain reset to hold MCU in known state during battery sag or cold-temperature startup. Use Value: Prevents corrupted EEPROM writes or ADC misreads during marginal VCC conditions using only 3μA quiescent current. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated 24V-to-3.3V DC/DC converter powering FPGA and communication ICs. IC Role / Device Role / Timing Role: Supervises 3.3V logic rail and provides 140ms reset pulse to synchronize FPGA configuration and peripheral initialization after power-up. Use Value: Guarantees clean boot sequence despite slow-rising 3.3V rail from high-capacitance industrial power supply. |
| Automotive Body Control Units | Medical Sensor Nodes |
Use Scenario: Under-dash BCM managing door locks, lighting, and CAN transceivers powered from vehicle battery via LDO. IC Role / Device Role / Timing Role: Detects brownout on 5V LDO output (derived from 12V battery) and holds microcontroller in reset until stable operation is confirmed. Use Value: Meets AEC-Q100 requirements with −40°C to +125°C operation and 2.31V threshold optimized for 5V rail margining. |
Use Scenario: Wearable ECG patch with ultra-low-power ARM Cortex-M0+ and analog front-end powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Supervises 1.8V analog supply and generates open-drain reset signal compatible with MCU's 1.8V I/O domain. Use Value: Enables safe shutdown and restart during battery depletion without external level translators or additional BOM cost. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LTR23D3+T | Same 2.31V threshold and 140ms timeout, but push-pull active-low output; no external pullup required. | Suitable where board layout prohibits shared reset bus or where drive strength exceeds open-drain capability. | Select MAX6326LTR23D3+T if push-pull drive is preferred and no wired-OR reset merging is needed. |
| TPS3808G33DBVR | 2.93V threshold (not 2.31V); 200ms timeout; 1.8V–6.5V operation; higher 8μA ICC at +1.8V. | Designed for 3.3V systems with tighter timing margins; lacks same low-current advantage at sub-2V rails. | Choose TPS3808G33DBVR only when 2.93V threshold aligns with system VCC tolerance and higher supply current is acceptable. |
Compared with MAX6383LT23D3+T, MAX6326LTR23D3+T offers stronger output drive but forfeits reset bus flexibility, while TPS3808G33DBVR provides broader voltage range but mismatches the precise 2.31V threshold and consumes >2.6× more current at 1.8V - making MAX6383LT23D3+T optimal for low-voltage, low-power, open-drain–based supervision.
Availability
MAX6383LT23D3+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLC I/O modules, automotive body control units, and medical sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6383LT23D3+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 medical applications, emphasizing low power, high reliability, and extended temperature performance.
The MAX6381–MAX6390 product line delivers single- and dual-supply microprocessor supervisors optimized for ultra-low quiescent current, tight threshold accuracy, and robust operation in harsh environments - specifically targeting power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6383LT23D3+T?
The MAX6383LT23D3+T has a factory-set nominal reset threshold of 2.31V, with guaranteed limits of 2.26V (min) and 2.37V (max) at +25°C, and ±2.5% tolerance over −40°C to +125°C. This value is encoded in the "23" suffix per Maxim's ordering guide and verified in the Reset Thresholds table of the datasheet.
Does MAX6383LT23D3+T include a manual reset input (MR)?
No, MAX6383LT23D3+T does not feature a manual reset input. It is part of the MAX6381/MAX6382/MAX6383 subgroup, which lacks MR functionality. Manual reset capability is only present in MAX6384–MAX6386 and MAX6390 variants, as confirmed in the Selector Guide and Pin Description sections.
What package options are available for MAX6383LT23D3+T?
MAX6383LT23D3+T is offered in two RoHS-compliant packages: 3-pin SC70 (outline 21-0075, land pattern 90-0208) and 6-pin μDFN (outline 21-0147, land pattern 90-0080). The "LT" prefix in the part number denotes the μDFN option, while "XR" would indicate SC70 - both are in production and supported by Aetrix Electronics.
Can MAX6383LT23D3+T monitor a second voltage rail?
No, MAX6383LT23D3+T does not support auxiliary voltage monitoring. The RESET IN pin is exclusive to MAX6387/MAX6388/MAX6389 variants. MAX6383LT23D3+T monitors only the VCC supply, as stated in the General Description and confirmed in the Pin Configurations and Selector Guide tables.
What is the minimum VCC voltage at which MAX6383LT23D3+T guarantees correct reset output behavior?
MAX6383LT23D3+T guarantees valid reset output logic state down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Detailed Description sections. Below this voltage, the internal comparator and timer may not operate reliably, but the device remains functional and non-damaging within its absolute ratings.
MAX6383LT23D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.31V
- 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)
MAX6383LT23D3+T FAQ
1.How can I place an order for MAX6383LT23D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383LT23D3+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 MAX6383LT23D3+T reliable?
The price and inventory of MAX6383LT23D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383LT23D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383LT23D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383LT23D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383LT23D3+T?
MAX6383LT23D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383LT23D3+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 MAX6383LT23D3+T?
For technical support, including MAX6383LT23D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383LT23D3+T requirements.
6.How does Aetrix verify that MAX6383LT23D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383LT23D3+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 MAX6383LT23D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383LT23D3+T?
All MAX6383LT23D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383LT23D3+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 MAX6383LT23D3+T part is unused and in its original packaging.
Return procedure for MAX6383LT23D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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