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Analog Devices Inc./Maxim Integrated MAX6412UK23-T
- Part No.:
- MAX6412UK23-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6412UK23-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6412UK23-T from Maxim Integrated is a low-power microprocessor reset supervisor IC with fixed 2.313V VCC reset threshold, manual reset input (MR), and capacitor-adjustable reset timeout delay. It features active-low push-pull RESET output, guaranteed reset validity down to VCC = 1V, and operates across -40°C to +125°C in SOT23-5 package. Used for reliable power-on reset in battery-powered controllers and automotive ECUs.
For engineers reviewing the MAX6412UK23-T datasheet, MAX6412UK23-T pinout, MAX6412UK23-T application, or MAX6412UK23-T equivalent, key selection criteria include factory-trimmed 2.313V threshold accuracy (±2.5% over temperature), 1.7µA typical quiescent current, capacitor-programmable timeout (275µs to >10ms), MR pulse rejection (75ns), and SOT23-5 thermal performance up to +125°C.
Technical Context
The MAX6412UK23-T implements a precision bandgap-based voltage comparator for VCC monitoring and a manual reset latch with glitch filtering. Its reset timeout is generated by a 240nA internal current source charging an external capacitor (SRT-to-GND), compared against a 0.65V internal reference.
Reset assertion occurs when VCC falls below 2.313V (±2.5%) or MR is pulled low; deassertion requires both VCC > 2.313V and MR high for the full timeout period. The push-pull output drives RESET low actively and pulls high internally-no external pullup required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.313V (typ), ±2.5% over -40°C to +125°C - ensures reliable brownout detection at nominal 2.3V rail |
| Quiescent Current | 1.7µA (typ) at +25°C - enables multi-year operation in coin-cell–powered systems |
| Reset Timeout Range | 275µs to >10ms via 0–15nF SRT capacitor - supports µP initialization timing from fast boot to complex firmware load |
| MR Pulse Rejection | 75ns minimum - rejects EMI-induced glitches on manual reset line |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| RESET Output Type | Active-low push-pull - eliminates need for external pullup resistor; sinks 3.2mA at VCC ≥ 4.5V |
| VCC Supply Range | 1.0V to 5.5V - guarantees valid reset assertion even during deep brownout (down to 1V) |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, RoHS-compliant lead-free option available (+T suffix). Thermal resistance θJA = 140°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset pin low during fault; actively pulls high after timeout - no external components needed |
| 2 - GND | Ground reference | Primary return path for internal comparators and output stage; must be low-impedance connection |
| 3 - MR | Manual reset input | Logic-low active; internal 20kΩ pullup allows direct switch-to-ground interface without external bias |
| 4 - SRT | Set reset timeout capacitor node | 240nA precision current source charges external capacitor; trace routing must minimize leakage and coupling |
| 5 - VCC | Supply voltage and monitored rail | Input to factory-trimmed 2.313V threshold comparator; also powers internal circuitry |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed VCC threshold | 2.313V (suffix "23") with ±2.5% tolerance over full temperature range - eliminates calibration effort in production |
| Capacitor-adjustable timeout | External SRT capacitor sets delay from 275µs to >10ms - replaces fixed-delay supervisors requiring multiple SKUs |
| Ultra-low supply current | 1.7µA typical - extends battery life in portable medical monitors and wireless sensors |
| Guaranteed reset validity to VCC = 1V | RESET remains functional even during severe brownout - prevents µP lockup before supply collapse |
| High-noise immunity | 75ns MR glitch rejection and transient immunity per MAX6412-20 toc07 - suppresses ESD and switching noise false triggers |
Applications
| Automotive Engine Control Unit | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 2.3V sensor power rail and provides clean reset to MCU during cold-crank voltage sag. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET until VCC stabilizes above 2.313V and timeout expires. Use Value: Prevents firmware corruption during 6V–9V cranking transients; 125°C rating supports under-hood placement. | Use Scenario: Ensures reliable startup of ARM Cortex-M based vital signs analyzer powered by single Li-ion cell. IC Role / Device Role / Timing Role: Generates >5ms reset pulse after battery voltage crosses 2.313V, synchronizing ADC initialization and display wake-up. Use Value: 1.7µA quiescent current extends standby time to >3 years; SOT23-5 footprint saves PCB area in handheld enclosure. |
| Industrial PLC I/O Module | Battery-Powered Wireless Sensor Node |
Use Scenario: Supervises isolated 3.3V logic supply in DIN-rail mounted controller exposed to 8kV ESD events. IC Role / Device Role / Timing Role: Detects VCC droop below 2.313V and asserts RESET for programmable duration; MR pin enables field-service reset. Use Value: 75ns MR pulse rejection blocks ESD-induced false resets; -40°C to +125°C range covers extended industrial ambient. | Use Scenario: Provides deterministic reset timing for LoRaWAN node during intermittent solar charging cycles. IC Role / Device Role / Timing Role: Uses 1nF SRT capacitor to set 3.0ms timeout, ensuring RF transceiver and MCU initialize coherently after voltage recovery. Use Value: Capacitor-adjustable delay accommodates variable charge-time profiles without firmware changes or BOM updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK23-T | Fixed 2.313V threshold, but uses internal RC timeout (no SRT pin); 2.5µA ICC | No external capacitor tuning - less flexible for varying µP boot times | Select when design prioritizes component count reduction over timeout adjustability |
| TPS3808G125DBVR | 2.32V threshold, 1.6µA ICC, fixed 200ms timeout; SOT23-6 package | Longer fixed timeout; no manual reset input; different pinout and footprint | Select for cost-sensitive applications where 200ms reset meets µP requirements and MR is unnecessary |
Compared with MAX6412UK23-T, MAX6316LUK23-T sacrifices timeout flexibility for lower part count, while TPS3808G125DBVR trades adjustable delay and MR support for tighter threshold tolerance (±0.5%) and higher integration - neither offers capacitor-programmable timing or MR functionality in identical SOT23-5 form factor.
Availability
MAX6412UK23-T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical monitors, industrial PLC I/O modules, and battery-powered wireless sensor nodes requiring stable component supply across extended temperature ranges.
Supply support for MAX6412UK23-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 computing applications.
The MAX6412–MAX6420 family delivers configurable µP reset supervision with capacitor-adjustable timing, targeting space-constrained, low-power, and high-reliability systems where voltage margin and thermal robustness are critical.
FAQ
What is the exact reset threshold voltage for MAX6412UK23-T?
The MAX6412UK23-T has a factory-trimmed VCC reset threshold of 2.313V (typical), with ±2.5% accuracy over the full -40°C to +125°C operating temperature range. This value is confirmed in Table 1 of the datasheet (suffix "23") and verified in the Electrical Characteristics table under VTH parameter. The MAX6412UK23-T uses laser-trimmed resistors to achieve this precision without external calibration.
Does MAX6412UK23-T support manual reset functionality?
Yes, the MAX6412UK23-T includes a dedicated manual reset input (MR pin, Pin 3) that is active-low and features an internal 20kΩ pullup resistor. Asserting MR low initiates a reset, which remains asserted for the full capacitor-programmed timeout period after MR is released. This function is explicitly documented in the Pin Description table and General Description section for MAX6412/MAX6413/MAX6414 variants.
What package type and dimensions does MAX6412UK23-T use?
The MAX6412UK23-T is supplied in a 5-pin SOT23 package (package code U5-2), measuring 2.9mm × 1.6mm × 1.1mm with gull-wing leads. This is confirmed in the Ordering Information table and Package Information section. The device is available in both leaded and lead-free versions, with the "-T" suffix indicating lead-free RoHS-compliant packaging.
How is the reset timeout period set on MAX6412UK23-T?
Reset timeout on the MAX6412UK23-T is set by connecting an external capacitor (CSRT) between the SRT pin (Pin 4) and ground. The timeout follows tRP = (2.71 × 10⁶) × CSRT + 275µs, where CSRT is in farads and tRP in seconds. Ceramic capacitors with <10nA leakage are recommended. This method is detailed in the Detailed Description and Application Information sections.
Is MAX6412UK23-T suitable for automotive applications?
Yes, the MAX6412UK23-T is specified for -40°C to +125°C operation and is used in automotive applications including engine control units and body electronics. While the base MAX6412UK23-T is not AEC-Q200 qualified, automotive-grade variants (e.g., MAX6412UK23/V-T) exist with "/V" suffix. The thermal and electrical specs - especially 125°C rating and transient immunity - align with under-hood requirements.
MAX6412UK23-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:
- 2.313V
- 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
MAX6412UK23-T FAQ
1.How can I place an order for MAX6412UK23-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6412UK23-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 MAX6412UK23-T reliable?
The price and inventory of MAX6412UK23-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6412UK23-T is usually 5 days.
3.What payment methods are accepted for MAX6412UK23-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6412UK23-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6412UK23-T?
MAX6412UK23-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6412UK23-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 MAX6412UK23-T?
For technical support, including MAX6412UK23-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6412UK23-T requirements.
6.How does Aetrix verify that MAX6412UK23-T is sourced from the original manufacturer or authorized distributors?
All MAX6412UK23-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 MAX6412UK23-T meets industry standards.
7.What is the process for return or replacement of MAX6412UK23-T?
All MAX6412UK23-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6412UK23-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 MAX6412UK23-T part is unused and in its original packaging.
Return procedure for MAX6412UK23-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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