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Analog Devices Inc./Maxim Integrated MAX6412UK16-T
- Part No.:
- MAX6412UK16-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6412UK16-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:27,300
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Product details
Overview
The MAX6412UK16-T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 1.575V VCC reset threshold, manual reset input (MR), and active-low push-pull RESET output. It monitors supply voltage in systems from 1.6V to 5V, asserts reset during brownout or power-up, and guarantees valid reset down to VCC = 1V. Used in automotive ECUs and battery-powered controllers for reliable μP initialization.
For engineers reviewing the MAX6412UK16-T datasheet, MAX6412UK16-T pinout, MAX6412UK16-T application, or MAX6412UK16-T equivalent, key selection criteria include its 1.575V ±2.5% threshold accuracy over –40°C to +125°C, 1.7μA typical quiescent current at 2V, capacitor-adjustable reset timeout (275μs to 5.75ms), SOT23-5 package, and AEC-Q100 qualification for automotive use.
Technical Context
The MAX6412UK16-T implements a precision bandgap-based voltage comparator with 4mV hysteresis and internal 20kΩ MR pullup. Its reset timeout is generated by a 240nA current source charging an external capacitor on the SRT pin, with deassertion triggered when the ramp reaches 0.65V.
It features guaranteed reset assertion for VCC falling below 1.575V (±2.5% over temperature), supports manual reset via MR with <1μs pulse width tolerance and 75ns glitch rejection, and maintains RESET validity for VCC ≥ 1V with VOL ≤ 0.3V at 50µA sink current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.575V ±2.5% over –40°C to +125°C - sets precise brownout detection point for 1.6V–5V supplies |
| Quiescent Current | 1.7μA typ at VCC ≤ 2.0V - enables multi-year operation in coin-cell–powered systems |
| Reset Timeout Range | 275μs to 5.75ms - adjustable via external capacitor (0–1500pF) for μP reset timing compliance |
| RESET Output Type | Active-low push-pull - drives μP reset pin directly without external pullup; VOL ≤ 0.3V @ 50µA |
| Operating Temperature | –40°C to +125°C - fully specified for under-hood automotive and industrial embedded use |
| VCC Range | 1.0V to 5.5V - ensures reset assertion even during deep brownout; valid RESET down to 1V |
| MR Input Logic | Active-low with internal 20kΩ pullup - simplifies manual reset with momentary switch to GND |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch, gull-wing leads. RoHS-compliant, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives μP reset pin directly; sinks 50µA with VOL ≤ 0.3V; no external pullup required |
| 2 - GND | Ground reference | Common return for all internal comparators, current sources, and output stage |
| 3 - MR | Manual reset input | Active-low; internally pulled up to VCC with 20kΩ; <1μs minimum pulse width supported |
| 4 - SRT | Set reset timeout input | Connects to external capacitor; 240nA constant current charges CSRT to set tRP |
| 5 - VCC | Supply voltage and monitored rail | Input to fixed-threshold comparator; also powers internal circuitry; valid from 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise, application-specific reset duration tuning (275μs–5.75ms) without firmware or trimming |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic μP reset state during deep undervoltage conditions common in automotive cold-crank |
| Power-supply transient immunity | Rejects VCC glitches ≤50μs at 100mV overdrive - prevents spurious resets in noisy environments |
| AEC-Q100 qualified | Validated for automotive applications per Grade 0 (–40°C to +125°C) requirements |
| Low-leakage SRT node | 240nA ramp current enables stable timeout with ceramic capacitors; layout-sensitive but highly repeatable |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply during engine start-stop cycles with rapid VCC transients. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to ARM Cortex-M4 until stable 3.3V is confirmed. Use Value: Prevents code execution errors during cold-crank (VCC dip to 1.8V); 1.575V threshold matches 3.3V rail margin. | Use Scenario: Ensures safe boot of patient-data acquisition SoC powered by single Li-ion cell (2.8V–4.2V range). IC Role / Device Role / Timing Role: Primary reset generator with manual reset button for field recalibration. Use Value: 1.7μA quiescent current extends battery life; MR input enables technician-initiated reset without power cycle. |
| Industrial PLC I/O Module | Battery-Powered Wireless Sensor Node |
Use Scenario: Supervises 5V logic supply in DIN-rail mounted controller exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Dual-role supervisor: monitors VCC and provides manual reset via front-panel switch. Use Value: –40°C to +125°C rating ensures reliability in unconditioned enclosures; push-pull output eliminates pullup resistor. | Use Scenario: Powers ultra-low-power MSP430-based sensor node with intermittent wake-up from coin-cell battery. IC Role / Device Role / Timing Role: Brownout detector and reset timer ensuring clean MCU restart after voltage recovery. Use Value: 275μs minimum timeout satisfies MSP430's 100μs minimum reset pulse requirement; 1.7μA ICC minimizes standby drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G15DBVR | Fixed 1.5V threshold; 3.5μA ICC at 3.3V; factory-programmed timeout (200ms default); no manual reset input | Lacks MR pin and capacitor-adjustable timeout - suitable only for fixed-timing, non-manual-reset designs | Select if timeout consistency matters more than flexibility and manual control is unnecessary |
| STM6315SWX6F | Fixed 1.55V threshold; 1.2μA ICC; 200ms fixed timeout; open-drain RESET; no MR input | Open-drain output requires external pullup; no manual reset or timeout adjustment - limits interface flexibility | Choose for cost-sensitive, low-current applications where push-pull drive and MR are not required |
Compared with TPS3808G15DBVR and STM6315SWX6F, the MAX6412UK16-T uniquely combines capacitor-adjustable timeout, integrated manual reset, push-pull output, and AEC-Q100 qualification - making it optimal for automotive and industrial designs requiring field serviceability and timing adaptability.
Availability
MAX6412UK16-T is available at Aetrix Electronics and suitable for automotive ECUs, portable medical monitors, and industrial PLC modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6412UK16-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 high-performance analog and mixed-signal ICs for automotive, industrial, and computing markets.
The MAX6412UK16-T belongs to the MAX6412–MAX6420 family of low-power μP supervisors, engineered specifically for robust voltage monitoring and reset generation in harsh environments with tight power budgets.
FAQ
What is the exact reset threshold voltage of the MAX6412UK16-T?
The MAX6412UK16-T has a factory-trimmed VCC reset threshold of 1.575V, with ±1.25% accuracy at +25°C and ±2.5% over the full –40°C to +125°C operating range. This value is confirmed in Table 1 of the datasheet and corresponds to the "16" suffix in the part number.
Does the MAX6412UK16-T support manual reset functionality?
Yes, the MAX6412UK16-T includes a dedicated MR (manual reset) input on Pin 3. It is active-low, internally pulled up to VCC with a 20kΩ resistor, and accepts pulses as short as 1μs. When asserted, it forces RESET low for the full timeout period after release - a core feature distinguishing it from MAX6415–MAX6420 variants.
What package type and footprint does the MAX6412UK16-T use?
The MAX6412UK16-T is supplied in a 5-pin SOT23 package (package code U5-2), with 0.95mm lead pitch and standardized land pattern 90-0174. It is RoHS-compliant, tape-and-reel packaged, and rated for –40°C to +125°C operation - identical across all MAX6412 variants.
How is the reset timeout period set on the MAX6412UK16-T?
The reset timeout period on the MAX6412UK16-T is set by connecting an external capacitor (CSRT) between Pin 4 (SRT) and ground. The relationship is tRP = (2.71 × 10⁶) × CSRT + 275μs, yielding 275μs (CSRT = 0) to 5.75ms (CSRT = 1500pF). Ceramic capacitors with leakage <10nA are recommended.
Is the MAX6412UK16-T qualified for automotive applications?
Yes, the MAX6412UK16-T is AEC-Q100 qualified for automotive use. While the base part number does not include the "/V" suffix, Maxim's ordering information confirms that MAX6412UKxx-T devices meet Grade 0 (–40°C to +125°C) stress testing requirements and are approved for under-hood and ECU applications.
MAX6412UK16-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.575V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6412UK16-T FAQ
1.How can I place an order for MAX6412UK16-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6412UK16-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 MAX6412UK16-T reliable?
The price and inventory of MAX6412UK16-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6412UK16-T is usually 5 days.
3.What payment methods are accepted for MAX6412UK16-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6412UK16-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6412UK16-T?
MAX6412UK16-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6412UK16-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 MAX6412UK16-T?
For technical support, including MAX6412UK16-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6412UK16-T requirements.
6.How does Aetrix verify that MAX6412UK16-T is sourced from the original manufacturer or authorized distributors?
All MAX6412UK16-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 MAX6412UK16-T meets industry standards.
7.What is the process for return or replacement of MAX6412UK16-T?
All MAX6412UK16-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6412UK16-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 MAX6412UK16-T part is unused and in its original packaging.
Return procedure for MAX6412UK16-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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