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Analog Devices Inc./Maxim Integrated MAX6412UK30+T
- Part No.:
- MAX6412UK30+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6412UK30+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,154
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Product details
Overview
The MAX6412UK30+T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 3.0V VCC reset threshold, manual reset input (MR), and active-low push-pull reset output. It monitors supply voltage from 1.0V to 5.5V, guarantees valid reset down to VCC = 1V, features capacitor-adjustable reset timeout (275µs to 5.75ms), and draws only 1.7µA typical quiescent current. It is used in automotive and battery-powered embedded controllers for reliable power-up/brownout detection.
For engineers reviewing the MAX6412UK30+T datasheet, MAX6412UK30+T pinout, MAX6412UK30+T application, or MAX6412UK30+T equivalent, key selection criteria include its fixed 3.0V reset threshold accuracy (±2.5% over -40°C to +125°C), SOT23-5 package compatibility, MR pulse width tolerance (≥1µs), and guaranteed reset assertion during VCC transients as short as 50µs at 100mV overdrive.
Technical Context
The MAX6412UK30+T implements a precision bandgap-based voltage comparator for VCC monitoring and a dedicated high-impedance manual reset input (MR) with internal 20kΩ pullup. Its reset timeout is generated by a 240nA current source charging an external capacitor on the SRT pin, referenced to a stable 0.65V internal threshold.
It asserts an active-low push-pull RESET signal when VCC falls below 3.0V (±2.5%), MR is pulled low, or both. RESET remains asserted for the full timeout period after all conditions clear, ensuring μP initialization stability during marginal supply recovery. The device operates across -40°C to +125°C and supports AEC-Q100-compliant automotive designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.000V ±2.5% over -40°C to +125°C - ensures deterministic reset assertion at nominal system rail voltage |
| Quiescent Current | 1.7µA typical at VCC ≤ 2.0V - enables multi-year operation in battery-backed systems |
| Reset Timeout Range | 275µs to 5.75ms (CSRT = 0F to 1500pF) - supports wide range of μP reset timing requirements |
| RESET Output Type | Active-low push-pull - drives standard CMOS μP reset inputs without external pullup |
| MR Input Logic | Active-low with 20kΩ internal pullup - simplifies manual reset implementation using momentary switch to GND |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| VCC Range | 1.0V to 5.5V - guarantees reset validity even during deep brownout conditions |
Pinout & Package
SOT23-5 package: 5-pin surface-mount, 1.6mm × 2.9mm footprint, RoHS-compliant lead-free (+T suffix), thermal resistance θJA = 255.9°C/W (multi-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives μP reset pin directly; sinks 50µA at 0.3V max VOL; no external pullup required |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external capacitor (SRT) |
| 3 - MR | Manual reset input | Active-low logic input; internally pulled up to VCC (20kΩ); ≥1µs pulse width required |
| 4 - SRT | Set reset timeout input | Connects to external timing capacitor; 240nA constant current source charges CSRT to 0.65V |
| 5 - VCC | Supply voltage input | Power source and monitored rail; supports 1.0V–5.5V; reset valid down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise tailoring of reset duration (275µs–5.75ms) without firmware or component changes |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic μP reset behavior during deep brownout, eliminating race conditions |
| Internal MR pullup resistor (20kΩ) | Reduces BOM count and PCB area - no external resistor needed for basic manual reset function |
| Power-supply transient immunity | Rejects VCC glitches ≤50µs at 100mV overdrive, preventing spurious resets in noisy environments |
| AEC-Q100 qualified option | Available in /V automotive-grade variants - supports functional safety-critical vehicle subsystems |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply in engine control module exposed to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to ARM Cortex-M7 during brownout, with 4.375ms timeout set by 1500pF SRT capacitor. Use Value: Prevents code corruption during 12V battery dips to 6V; MR pin allows technician-initiated ECU reset via dashboard service button. | Use Scenario: Ensures safe startup and fault recovery in handheld blood glucose meter powered by single Li-ion cell (2.8–4.2V). IC Role / Device Role / Timing Role: Resets ultra-low-power MSP430 microcontroller when battery voltage drops below 3.0V; uses internal MR pullup to minimize standby current. Use Value: Extends usable battery life by drawing only 1.7µA quiescent current; guarantees reset assertion even at end-of-discharge (3.0V threshold). |
| Industrial PLC I/O Module | Battery-Powered Wireless Sensor Node |
Use Scenario: Supervises 5.0V FPGA configuration supply in DIN-rail mounted programmable logic controller with wide ambient temperature range. IC Role / Device Role / Timing Role: Provides temperature-stable 3.0V reset threshold (±2.5% over -40°C to +125°C) and rejects 75ns MR glitches. Use Value: Eliminates false resets caused by EMI coupling into MR trace; SOT23-5 footprint enables compact, high-density I/O board layout. | Use Scenario: Manages cold-start reliability in LoRaWAN node using Nordic nRF52840, powered by CR2032 coin cell (2.0–3.3V). IC Role / Device Role / Timing Role: Asserts RESET until VCC rises above 3.0V and stabilizes; timeout set to 275µs (CSRT = 0F) for fastest possible wake-up. Use Value: Reduces boot latency by minimizing reset hold time while maintaining immunity to supply bounce during battery insertion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK30+T | Fixed 3.0V threshold, but uses factory-programmed timeout (no SRT pin); 2.5µA ICC | Lacks adjustable timeout - suitable only where fixed 140ms delay is acceptable | Select when design requires guaranteed consistent timeout without capacitor tolerance sensitivity |
| TPS3808G30DBVR | 3.0V threshold, 200ms fixed timeout, 1.1µA ICC, open-drain RESET | Requires external pullup; longer timeout limits fast-recovery applications | Select for ultra-low-power systems where 200ms reset hold is sufficient and open-drain flexibility is needed |
Compared with MAX6412UK30+T, MAX6316LUK30+T trades timeout adjustability for tighter production consistency, while TPS3808G30DBVR offers lower current but sacrifices both timeout flexibility and push-pull drive strength - making MAX6412UK30+T optimal for designs requiring field-tunable reset timing and direct μP interface.
Availability
MAX6412UK30+T is available at Aetrix Electronics and suitable for automotive ECUs, portable medical devices, industrial PLCs, and battery-powered wireless sensor nodes requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6412UK30+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.
The MAX6412UK30+T belongs to the MAX6412–MAX6420 family of low-power μP supervisors engineered for robust voltage monitoring and reset generation in harsh environments with wide temperature and supply variation.
FAQ
What is the exact reset threshold voltage of the MAX6412UK30+T?
The MAX6412UK30+T has a factory-trimmed VCC reset threshold of 3.000V, with ±1.25% accuracy at +25°C and ±2.5% over the full operating temperature range of -40°C to +125°C. This value is confirmed in the Electrical Characteristics table and corresponds to the "30" suffix in the part number per Table 1 of the datasheet.
Does the MAX6412UK30+T support dual-voltage monitoring?
No, the MAX6412UK30+T does not support dual-voltage monitoring. It is a single-threshold supervisor with fixed 3.0V VCC monitoring and a manual reset input (MR). Dual-voltage capability is exclusive to the MAX6418/MAX6419/MAX6420 variants, which include both a fixed VCC threshold and an adjustable RESET IN input.
What capacitor value sets a 4.375ms reset timeout for the MAX6412UK30+T?
A 1500pF capacitor connected between the SRT pin and GND sets a nominal 4.375ms reset timeout for the MAX6412UK30+T, as specified in the Electrical Characteristics table under "Reset Timeout Period" with CSRT = 1500pF. This value is production-tested and guaranteed across temperature.
Can the MAX6412UK30+T operate with VCC below 1.0V?
The MAX6412UK30+T is guaranteed to assert a valid RESET signal only down to VCC = 1.0V. Below this voltage, RESET output drive capability degrades significantly. For applications requiring reset validity down to 0V, a 100kΩ pulldown resistor from RESET to GND is recommended, as documented in the "Ensuring a Valid RESET…" section of the datasheet.
Is the MAX6412UK30+T pin-compatible with other MAX6412 variants?
Yes, all MAX6412 variants (e.g., MAX6412UK16+T, MAX6412UK22+T) share identical SOT23-5 pinout, electrical interface, and functional architecture - only the factory-trimmed reset threshold differs. The MAX6412UK30+T is fully interchangeable at the board level with other MAX6412 suffixes, provided the 3.0V threshold meets system requirements.
MAX6412UK30+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- 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
MAX6412UK30+T FAQ
1.How can I place an order for MAX6412UK30+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6412UK30+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 MAX6412UK30+T reliable?
The price and inventory of MAX6412UK30+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6412UK30+T is usually 5 days.
3.What payment methods are accepted for MAX6412UK30+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6412UK30+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6412UK30+T?
MAX6412UK30+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6412UK30+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 MAX6412UK30+T?
For technical support, including MAX6412UK30+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6412UK30+T requirements.
6.How does Aetrix verify that MAX6412UK30+T is sourced from the original manufacturer or authorized distributors?
All MAX6412UK30+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 MAX6412UK30+T meets industry standards.
7.What is the process for return or replacement of MAX6412UK30+T?
All MAX6412UK30+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6412UK30+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 MAX6412UK30+T part is unused and in its original packaging.
Return procedure for MAX6412UK30+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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