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Analog Devices Inc./Maxim Integrated MAX6383LT22D3+T
- Part No.:
- MAX6383LT22D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
MAX6383LT22D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6383LT22D3+T from Maxim Integrated is a low-power, open-drain active-low microprocessor supervisory circuit designed for reliable power-on reset and brownout detection in space-constrained systems. It features a factory-set 2.19V reset threshold (±2.5% over –40°C to +125°C), 140ms minimum reset timeout, 3μA supply current at +1.8V, and guaranteed valid reset output down to VCC = 1V. It is used in portable battery-powered equipment requiring precise voltage monitoring and glitch-immune reset assertion.
For engineers reviewing the MAX6383LT22D3+T datasheet, MAX6383LT22D3+T pinout, MAX6383LT22D3+T application, or MAX6383LT22D3+T equivalent, key selection criteria include its open-drain active-low reset architecture, 2.19V threshold tolerance, SC70-3 package footprint, VCC-only monitoring capability (no MR or RESET IN), and compatibility with 1.8V–5.0V supply rails in embedded control and instrumentation.
Technical Context
The MAX6383LT22D3+T implements a precision bandgap-based voltage comparator with internal hysteresis and a monolithic timer for deterministic reset timeout generation. Its open-drain RESET output requires an external pullup resistor and supports bidirectional voltage translation across logic domains.
It operates across the full industrial temperature range (–40°C to +125°C) with ±2.5% reset threshold accuracy and exhibits negative-going VCC transient immunity up to 35µs for 100mV overdrive - critical for noisy power-rail environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.19V nominal (suffix "22"), ±2.5% over –40°C to +125°C - ensures robust brownout detection across temperature extremes |
| Reset Timeout | 140ms minimum (suffix "D3") - guarantees sufficient processor initialization time after power stabilization |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion even during deep brownout conditions |
| Output Type | Open-drain active-low RESET - allows wired-OR configuration and level-shifting without additional logic |
| Reset Output Validity | Guaranteed down to VCC = 1V - maintains deterministic state during power ramp-down |
| Package | 3-pin SC70 (X3+2 outline) - occupies <0.8 mm² PCB area, compatible with high-density portable designs |
Pinout & Package
MAX6383LT22D3+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm × 0.55mm. The package supports reflow soldering per JEDEC J-STD-020 (peak 260°C) and has θJA = 340.4°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset signal output; requires external pullup; sinks up to 3.2mA at VCC ≥ 4.5V |
| 2 | VCC | Main supply input (1.0V–5.5V); powers internal circuitry and serves as monitored voltage rail |
| 3 | GND | Analog/digital ground reference; must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.19V with ±2.5% accuracy over full temperature range - eliminates need for external calibration or trimming resistors |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on monitoring applications without compromising reset reliability |
| Open-drain reset output | Supports mixed-voltage systems and shared reset buses via external pullup - simplifies integration in multi-rail SoC platforms |
| Negative-going transient immunity | Rejects VCC glitches ≤35µs duration for 100mV overdrive - prevents spurious resets in electrically noisy environments |
| Valid reset down to 1V VCC | Ensures deterministic logic state during power collapse - critical for fail-safe shutdown sequencing in safety-critical subsystems |
Applications
| Portable/Battery-Powered Equipment | Critical μP and μC Power Monitoring |
|---|---|
Use Scenario: Coin-cell–powered environmental sensor node operating intermittently for multi-year deployment. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM Cortex-M0+ MCU during cold start and brownout events. Use Value: 3μA supply current extends battery life; 2.19V threshold matches LiSOCl₂ cell discharge profile; 140ms timeout ensures full MCU boot sequence completion. | Use Scenario: Industrial PLC controller with dual 3.3V/1.8V rails powering FPGA and microcontroller. IC Role / Device Role / Timing Role: Dedicated VCC monitor for 1.8V core rail, generating open-drain reset signal shared across multiple logic domains. Use Value: Open-drain output enables safe reset bus sharing; ±2.5% threshold accuracy prevents false triggers during thermal cycling; SC70-3 footprint saves space on dense control board. |
| Computers | Intelligent Instruments |
Use Scenario: Embedded baseboard management controller (BMC) in compact server module. IC Role / Device Role / Timing Role: Primary reset supervisor for BMC's 3.3V I/O supply, interfacing with system-level reset tree via pullup to 3.3V. Use Value: Guaranteed reset validity down to VCC = 1V ensures clean shutdown during AC loss; 140ms timeout aligns with BMC firmware initialization timing. | Use Scenario: Handheld multimeter with segmented LCD and ultra-low-power MCU. IC Role / Device Role / Timing Role: Power-on reset generator triggered by main alkaline battery voltage crossing 2.19V threshold during insertion. Use Value: Factory-set 2.19V threshold eliminates BOM cost of external resistor divider; SC70-3 package fits within tight mechanical envelope behind display bezel. |
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 2.19V threshold and 140ms timeout, but push-pull active-low output; higher ICC (12μA at +3.6V) | Requires no external pullup; less suitable for wired-OR or level-shifted reset buses | Select when board layout lacks space for pullup resistor or when driving single-load reset line directly |
| TPS3808G33DBVR | 2.33V threshold (not 2.19V); 200ms timeout; 1.1μA ICC at +3.3V; SOT-23-5 package | Higher threshold better suited for 2.5V systems; longer timeout may delay boot; extra pin for manual reset | Select when lower power is critical and 2.33V threshold aligns with target rail; avoid if strict 2.19V match required |
Compared with MAX809TRD3+T, MAX6383LT22D3+T offers lower power and open-drain flexibility at the cost of external component count; versus TPS3808G33DBVR, it provides tighter threshold matching and smaller footprint but higher current draw and no manual reset capability.
Availability
MAX6383LT22D3+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical μP and μC power monitoring, and intelligent instruments requiring stable component supply throughout product lifecycles.
Supply support for MAX6383LT22D3+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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed supervisory circuits optimized for space-constrained, battery-sensitive systems requiring accurate voltage monitoring and glitch-immune reset assertion.
FAQ
What is the exact reset threshold voltage of MAX6383LT22D3+T?
The MAX6383LT22D3+T has a factory-set nominal reset threshold of 2.19V, with guaranteed accuracy of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is confirmed by the "22" suffix in the part number and documented in the Reset Thresholds table of the datasheet. The threshold is fixed and not adjustable externally.
Does MAX6383LT22D3+T include a manual reset input (MR)?
No, MAX6383LT22D3+T does not include a manual reset input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which only monitors VCC and provides an open-drain active-low RESET output. Manual reset functionality is present only in MAX6384–MAX6390 variants (e.g., MAX6384LT22D3+T), as confirmed in the Selector Guide and Pin Description sections.
What package type and dimensions does MAX6383LT22D3+T use?
MAX6383LT22D3+T uses a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm × 0.55mm. It is RoHS-compliant ("+T" suffix), rated for reflow soldering up to +260°C, and has thermal resistance θJA = 340.4°C/W on a multilayer board.
Can MAX6383LT22D3+T monitor a second voltage rail?
No, MAX6383LT22D3+T monitors only the VCC supply rail. Auxiliary voltage monitoring via RESET IN is exclusive to MAX6387–MAX6389 variants, as explicitly stated in the Pin Description and Selector Guide. The MAX6383LT22D3+T pinout contains only RESET, VCC, and GND - no RESET IN terminal.
What is the minimum VCC voltage at which MAX6383LT22D3+T guarantees correct RESET output logic state?
MAX6383LT22D3+T guarantees valid RESET output logic state down to VCC = 1.0V, as specified in both the Absolute Maximum Ratings and Detailed Description sections. This ensures deterministic reset behavior during power-down sequences and brownout recovery, even when supply voltage collapses below typical logic thresholds.
MAX6383LT22D3+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:
- 2.19V
- 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)
MAX6383LT22D3+T FAQ
1.How can I place an order for MAX6383LT22D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383LT22D3+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 MAX6383LT22D3+T reliable?
The price and inventory of MAX6383LT22D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383LT22D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383LT22D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383LT22D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383LT22D3+T?
MAX6383LT22D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383LT22D3+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 MAX6383LT22D3+T?
For technical support, including MAX6383LT22D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383LT22D3+T requirements.
6.How does Aetrix verify that MAX6383LT22D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383LT22D3+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 MAX6383LT22D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383LT22D3+T?
All MAX6383LT22D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383LT22D3+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 MAX6383LT22D3+T part is unused and in its original packaging.
Return procedure for MAX6383LT22D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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