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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:5,000
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Product details
Overview
MAX6412UK30-T from Maxim Integrated is a low-power microprocessor reset supervisor IC with fixed 3.0V VCC reset threshold, manual reset input (MR), and capacitor-adjustable reset timeout delay. It features active-low push-pull RESET output, guarantees valid reset assertion down to VCC = 1V, and operates across -40°C to +125°C for automotive and industrial embedded systems.
For engineers reviewing the MAX6412UK30-T datasheet, MAX6412UK30-T pinout, MAX6412UK30-T application, or MAX6412UK30-T equivalent, this device serves as a precision voltage-monitoring supervisor for brownout detection, power-up sequencing, and manual system reset in battery-powered controllers and critical µP monitoring applications.
Technical Context
The MAX6412UK30-T implements a factory-trimmed 3.00V ±2.5% VCC reset threshold with 4mV hysteresis, monitored via internal comparator. Reset assertion occurs when VCC falls below threshold or MR is pulled low; deassertion requires VCC rise above threshold plus externally programmed timeout via SRT capacitor.
Its 1.7µA typical supply current at +25°C and guaranteed operation down to VCC = 1V enable ultra-low-power supervision in portable and automotive electronics. The push-pull RESET output drives logic-compatible loads with VOL ≤ 0.4V at ISINK = 3.2mA and VOH ≥ 0.8×VCC at ISOURCE = 800µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.00V ±2.5% - precisely set factory-trimmed trip point for reliable brownout detection at nominal 3.0V rail |
| Supply Current | 1.7µA (typ) - enables multi-year battery life in always-on monitoring circuits |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial environments |
| RESET Output Type | Active-low push-pull - provides strong drive capability without external pull-up, compatible with standard µP reset inputs |
| Reset Timeout Control | Capacitor-adjustable via SRT pin - timeout = (2.71×10⁶) × CSRT + 275µs, enabling precise timing from ~0.275ms to >100ms |
| VCC Validity Range | 1.0V to 5.5V - ensures functional reset assertion even during deep brownout conditions |
| MR Input Logic | Active-low with 20kΩ internal pullup - simplifies manual reset implementation using momentary switch to GND |
Pinout & Package
SOT23-5 package: compact 2.9mm × 1.6mm surface-mount outline with exposed pad option, rated for -40°C to +125°C operation and RoHS-compliant (lead-free version denoted by "+T" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset input directly; sinks up to 3.2mA or sources up to 800µA; valid for VCC ≥ 1V |
| 2 - GND | Ground reference | Primary return path for internal comparators, ramp current source, and output stage |
| 3 - MR | Manual reset input | Active-low control with internal 20kΩ pullup; asserts reset when pulled ≤ 0.8V; minimum pulse width 1µs |
| 4 - SRT | Set reset timeout input | Connects to external timing capacitor; hosts 240nA precision ramp current source for programmable delay |
| 5 - VCC | Supply voltage and monitored rail input | Power source and primary voltage monitor input; supports 1.0V–5.5V range with 3.00V ±2.5% threshold |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise, application-specific reset hold time (0.275ms to >100ms) without firmware or external logic |
| Factory-trimmed 3.0V threshold | Eliminates external resistor divider; achieves ±2.5% accuracy over full temperature range for stable trip point |
| Ultra-low quiescent current | 1.7µA typical draw extends battery life in portable and remote-sensor applications |
| Manual reset with internal pullup | Reduces BOM count-no external resistor needed; supports simple momentary switch interface |
| Guaranteed operation down to VCC = 1V | Ensures deterministic reset behavior during severe brownout, preventing erratic µP execution |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Glucose Monitor |
|---|---|
Use Scenario: Monitors 3.3V main supply in engine control module during cold cranking, where battery sag causes transient brownouts. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to MCU until VCC stabilizes above 3.0V and timeout expires. Use Value: Prevents corrupted flash writes or invalid sensor reads during voltage recovery; 125°C rating ensures under-hood reliability. |
Use Scenario: Powers on/off sequence in handheld glucose meter with coin-cell battery and low-power ARM Cortex-M0. IC Role / Device Role / Timing Role: Ensures clean MCU reset at power-up and responds to user-initiated reset via tactile button. Use Value: 1.7µA quiescent current preserves battery capacity; capacitor-adjustable timeout accommodates variable boot-time requirements. |
| Industrial PLC I/O Module | Battery-Powered Wireless Sensor Node |
Use Scenario: Supervises isolated 3.0V auxiliary rail powering analog front-end and communication ICs in modular PLC base. IC Role / Device Role / Timing Role: Detects rail collapse due to ESD or load dump, holding µP in reset until fault clears and timeout completes. Use Value: Push-pull RESET eliminates need for external pull-up; -40°C to +125°C range matches industrial ambient specs. |
Use Scenario: Long-life environmental sensor node powered by Li-SOCl₂ battery, transmitting data every 15 minutes. IC Role / Device Role / Timing Role: Provides fail-safe reset if main regulator fails or battery voltage drops below 3.0V threshold. Use Value: Guaranteed reset validity down to VCC = 1V prevents undefined state during final battery depletion phase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK30D3+ | Fixed 3.0V threshold, 1.6µA ICC, but uses fixed 140ms timeout (no capacitor adjustment) | Lacks programmable delay; suitable only where fixed timeout suffices | Select when design requires simpler BOM and does not need adjustable reset hold time |
| TPS3808G30DBVR | 3.0V threshold, 1.1µA ICC, open-drain RESET output, no manual reset input | Requires external pull-up; lacks MR pin for operator-initiated reset | Select when lowest possible quiescent current is critical and manual reset is unnecessary |
Compared with MAX6412UK30-T, MAX6316LUK30D3+ offers slightly lower current but sacrifices timeout flexibility, while TPS3808G30DBVR reduces power further but removes both manual reset and push-pull drive-making MAX6412UK30-T optimal for designs needing field-serviceable reset and robust µP interface.
Availability
MAX6412UK30-T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical devices, industrial PLC modules, battery-powered wireless sensors, and critical microprocessor monitoring applications requiring stable component supply across extended temperature ranges.
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, emphasizing low power, high reliability, and wide temperature operation.
The MAX6412–MAX6420 family delivers configurable µP reset supervision with capacitor-adjustable timing, targeting battery-powered, automotive, and industrial systems where deterministic power-on reset and brownout recovery are essential.
FAQ
What is the exact reset threshold voltage for MAX6412UK30-T?
The MAX6412UK30-T has a factory-trimmed VCC reset threshold of 3.00V with ±2.5% tolerance over -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. The threshold remains stable across temperature and supply variations, ensuring consistent brownout detection for 3.0V systems.
How do I calculate the reset timeout capacitor for MAX6412UK30-T?
Use the formula tRP = (2.71 × 10⁶) × CSRT + 275µs, where tRP is the desired timeout in seconds and CSRT is the capacitor value in farads. For example, a 1500pF capacitor yields ~4.375ms timeout. The SRT pin must connect to a low-leakage ceramic capacitor; stray capacitance or probe loading on SRT will degrade timing accuracy.
Does MAX6412UK30-T support manual reset functionality?
Yes, MAX6412UK30-T includes an active-low manual reset input (MR) with internal 20kΩ pullup resistor. Pulling MR to GND for ≥1µs asserts RESET; the output remains asserted for the full capacitor-programmed timeout after MR is released. This enables hardware-initiated resets without additional components.
Can MAX6412UK30-T operate reliably at VCC = 1.2V?
Yes, MAX6412UK30-T guarantees valid RESET output down to VCC = 1.0V. At 1.2V, it maintains full reset assertion capability and meets all electrical specifications including VOL ≤ 0.3V and VOH ≥ 0.8×VCC. This ensures robust operation during deep brownout events common in battery-powered systems.
What package type and footprint does MAX6412UK30-T use?
MAX6412UK30-T is supplied in a 5-pin SOT23-5 package (package code U5-2, outline 21-0057). Its footprint matches JEDEC MO-178AB, with 0.95mm pin pitch and 2.9mm × 1.6mm body size. Land pattern #90-0174 is recommended; the device supports both leaded and lead-free assembly (replace "-T" with "+T" for RoHS-compliant version).
MAX6412UK30-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:
- 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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