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Analog Devices Inc./Maxim Integrated MAX6333UR16D3-T
- Part No.:
- MAX6333UR16D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6333UR16D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,726
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Product details
Overview
MAX6333UR16D3-T from Maxim Integrated is a push/pull active-low microprocessor supervisory circuit in SOT23-3 package, monitoring 1.6V supply thresholds with 100ms minimum reset timeout, ultra-low 3.3μA supply current at 2.5V, and guaranteed operation down to VCC = 0.7V - used for reliable power-on reset in battery-powered microcontroller systems.
For engineers reviewing the MAX6333UR16D3-T datasheet, MAX6333UR16D3-T pinout, MAX6333UR16D3-T application, or MAX6333UR16D3-T equivalent, this page delivers verified electrical specs, reset timing behavior, SOT23-3 terminal mapping, and validated alternatives for low-voltage embedded reset design.
Technical Context
The MAX6333UR16D3-T implements a precision voltage comparator with factory-trimmed 1.60V ±1.8% (25°C) reset threshold and ±3% over -40°C to +125°C, paired with an internal timer generating a guaranteed minimum 100ms active-low reset pulse after VCC rises above threshold.
Its push/pull output drives RESET low during undervoltage and timeout, then actively pulls high when released; immunity to fast VCC transients is achieved via comparator hysteresis and propagation delay filtering - critical for noisy 1.8V/2.5V digital supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.60V ±1.8% at +25°C; ±3% over full temperature range - ensures accurate brownout detection at 1.6V rail |
| Reset Timeout Period | 100ms minimum - guarantees sufficient processor initialization time before release |
| Supply Current | 3.3μA typical at VCC = 2.5V - enables multi-year battery life in portable systems |
| Operating Voltage Range | 0.7V to 5.5V - supports valid reset assertion even during deep brownout |
| Output Type | Active-low push/pull - eliminates external pull-up resistor and reduces BOM count |
| Temperature Range | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| VCC Falling Propagation Delay | 24µs - provides rapid response to supply collapse without false triggering |
Pinout & Package
MAX6333UR16D3-T is housed in a 3-pin SOT23-3 package (outline 21-0051), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output driver - must be connected directly to system ground plane |
| 2 | RESET | Active-low push/pull output - asserts low during VCC < 1.60V and holds for ≥100ms after recovery |
| 3 | VCC | Power supply input - powers internal circuitry and defines reset threshold reference; operates from 0.7V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low operating voltage | Valid reset assertion down to VCC = 0.7V - ensures deterministic behavior during deep power collapse |
| Precision factory-trimmed threshold | 1.60V ±1.8% at +25°C - eliminates need for external resistor divider or calibration |
| Three standard timeout options | 100ms minimum pulse width - matches boot-time requirements of ARM Cortex-M and RISC-V MCUs |
| Transient-immune comparator | Rejects VCC glitches ≤24µs at 10V/ms - prevents spurious resets in electrically noisy environments |
| No external components required | Self-contained reset generation - reduces bill-of-materials and improves layout reliability |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG sensor powered by single-cell Li-ion battery with 2.5V–3.3V regulation. IC Role / Device Role / Timing Role: Monitors regulated 2.5V supply and asserts reset if voltage drops below 1.60V during battery sag or cold start. Use Value: Guarantees clean MCU boot after brownout, preventing corrupted memory writes during low-power wake-up sequences. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated 3.3V I/O power domain. IC Role / Device Role / Timing Role: Provides 100ms power-on reset to FPGA configuration logic and microcontroller firmware loader. Use Value: Ensures deterministic state initialization across wide temperature (-40°C to +125°C) and voltage ripple conditions. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: 12V-to-3.3V converted subsystem powering CAN transceiver and microcontroller in door module. IC Role / Device Role / Timing Role: Detects undervoltage on 3.3V rail caused by load dump or alternator failure, holding MCU in reset until stable. Use Value: Prevents erratic CAN bus communication during transient supply faults - meets ISO 16750-2 pulse 4 immunity requirements. |
Use Scenario: Battery-backed electricity meter with real-time clock and metrology ASIC operating from 1.8V LDO. IC Role / Device Role / Timing Role: Supervises 1.8V metrology rail and triggers 100ms reset upon voltage dip below 1.60V during capacitor discharge. Use Value: Maintains data integrity during power interruption by ensuring RTC and flash write operations complete before reset release. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR16D3-T | Same 1.60V threshold and 100ms timeout, but rated only to +85°C ambient - lacks extended temperature qualification | Not suitable for under-hood automotive or industrial enclosures exceeding +85°C | Select MAX6333UR16D3-T when full -40°C to +125°C operation is required |
| TPS3808G16DBVR | 1.6V threshold with 200ms default timeout (adjustable via capacitor); higher 8μA quiescent current | Requires external timing capacitor; less suited for ultra-low-power coin-cell applications | Choose MAX6333UR16D3-T for fixed, capacitor-free 100ms timing and sub-4μA current |
Compared with MAX6326UR16D3-T and TPS3808G16DBVR, the MAX6333UR16D3-T delivers guaranteed -40°C to +125°C operation without external components and the lowest supply current among 1.6V-reset alternatives - making it optimal for thermally demanding, battery-sensitive designs.
Availability
MAX6333UR16D3-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6333UR16D3-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 - with emphasis on high-reliability, low-power solutions.
The MAX6333 series belongs to Maxim's μP supervisory product line, engineered specifically for deterministic reset generation in 1.8V–3.3V embedded systems where supply stability and timing accuracy are critical.
FAQ
What is the exact reset threshold voltage for MAX6333UR16D3-T?
The MAX6333UR16D3-T has a factory-trimmed nominal reset threshold of 1.60V, with tolerance of ±1.8% at +25°C and ±3% over the full -40°C to +125°C operating range. This value is confirmed in Table 1 of the official datasheet and applies specifically to the "UR16" suffix variant of the MAX6333 family.
Does MAX6333UR16D3-T require any external components to function?
No, the MAX6333UR16D3-T operates as a fully self-contained reset supervisor - no external resistors, capacitors, or trimming components are needed. Its 1.60V threshold is factory-set, and the 100ms reset timeout is internally generated, enabling true "single-component" reset implementation in space-constrained designs.
What is the supply current consumption of MAX6333UR16D3-T at 1.8V?
At VCC = 1.8V and TA = +25°C, the MAX6333UR16D3-T draws 3.0μA typical supply current (ICC), with a maximum of 6.0μA across temperature and process variation - enabling multi-year operation in coin-cell–powered IoT endpoints and wearables.
Can MAX6333UR16D3-T be used in automotive applications?
Yes, the MAX6333UR16D3-T is specified for -40°C to +125°C operation and packaged in RoHS-compliant SOT23-3, meeting AEC-Q100 stress test requirements when used within its absolute maximum ratings - making it suitable for body electronics, infotainment power domains, and other non-safety-critical automotive subsystems.
How does the reset timeout behavior change with temperature for MAX6333UR16D3-T?
The MAX6333UR16D3-T's 100ms minimum reset timeout remains stable across temperature: typical normalized timeout varies less than ±25% from -40°C to +125°C (per Figure toc02), ensuring consistent MCU initialization timing regardless of thermal environment - critical for industrial and automotive deployments.
MAX6333UR16D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6333UR16D3-T FAQ
1.How can I place an order for MAX6333UR16D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6333UR16D3-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 MAX6333UR16D3-T reliable?
The price and inventory of MAX6333UR16D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6333UR16D3-T is usually 5 days.
3.What payment methods are accepted for MAX6333UR16D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6333UR16D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6333UR16D3-T?
MAX6333UR16D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6333UR16D3-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 MAX6333UR16D3-T?
For technical support, including MAX6333UR16D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6333UR16D3-T requirements.
6.How does Aetrix verify that MAX6333UR16D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6333UR16D3-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 MAX6333UR16D3-T meets industry standards.
7.What is the process for return or replacement of MAX6333UR16D3-T?
All MAX6333UR16D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6333UR16D3-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 MAX6333UR16D3-T part is unused and in its original packaging.
Return procedure for MAX6333UR16D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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