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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc./Maxim Integrated MAX6412UK16

Name: MAX6412UK16
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX6412UK16
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX6412UK16

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: SC-74A, SOT-753

Datasheet:: MAX6412UK16.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-5

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Product details

Overview

MAX6412UK16 from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 1.575V V_CC reset threshold, manual reset input (MR), and active-low push-pull RESET output. It monitors supply voltage in battery-powered controllers and embedded systems, asserts reset during brownout or power-up, and guarantees valid reset down to V_CC = 1V. The reset timeout is capacitor-adjustable (275µs to 5.75ms) for flexible μP initialization timing.

For engineers reviewing the MAX6412UK16 datasheet, MAX6412UK16 pinout, MAX6412UK16 application, or MAX6412UK16 equivalent, this page delivers verified electrical parameters, SOT23-5 package details, dual-voltage monitoring limitations, AEC-Q100 qualification status, and real-world design implications of its 1.7µA quiescent current and 100mV reset hysteresis.

Technical Context

The MAX6412UK16 implements a precision bandgap-based voltage comparator with factory-laser-trimmed 1.575V threshold (±1.25% at +25°C, ±2.5% over -40°C to +125°C) and 4×V_TH hysteresis. Its internal 240nA SRT ramp current charges an external capacitor to set the reset timeout period, with guaranteed operation across 1.0V–5.5V V_CC.

It features a dedicated MR pin with 20kΩ internal pullup, 1µs minimum pulse width, and 75ns glitch rejection. The active-low push-pull RESET output sinks 50µA at V_CC ≥1.0V (V_OL ≤0.3V) and sources 200µA at V_CC ≥1.8V (V_OH ≥0.8×V_CC), ensuring reliable interface with CMOS microcontrollers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Reset Threshold	1.575V (nominal), ±1.25% accuracy at +25°C - sets precise brownout detection point for 1.6V–5V systems
Quiescent Current	1.7µA (typ at V_CC ≤2.0V) - enables multi-year battery life in portable equipment
Reset Timeout Range	275µs to 5.75ms (with 0–1500pF SRT capacitor) - supports wide range of μP reset timing requirements
Operating Temperature	-40°C to +125°C - qualified for automotive under-hood and industrial embedded environments
Output Type	Active-low push-pull - eliminates need for external pullup resistor, ensures fast, rail-to-rail logic transitions
Supply Voltage Range	1.0V to 5.5V - guarantees reset assertion even during deep brownout conditions
MR Input Logic	V_IL ≤0.3×V_CC, V_IH ≥0.7×V_CC - compatible with standard CMOS logic levels across full V_CC range

Pinout & Package

SOT23-5 package: ultra-compact 2.9mm × 1.6mm footprint, surface-mount, lead-free (RoHS-compliant) or leaded options available, rated for -40°C to +125°C operation.

Pin/Terminal	Circuit Role	Design Meaning
1 - RESET	Active-low push-pull reset output	Drives μP reset pin directly; sinks 50µA at V_CC ≥1.0V (V_OL ≤0.3V); no external pullup required
2 - GND	Ground reference	Common return path for all internal circuitry; must be low-impedance connection to system ground plane
3 - MR	Manual reset input	Logic-low assertion triggers reset; internal 20kΩ pullup allows floating when unused; 1µs minimum pulse width
4 - SRT	Set reset timeout input	Connects to external capacitor (0–1500pF) to program timeout; 240nA constant-current source sets timing
5 - V_CC	Power supply and monitored voltage input	Supplies device and serves as primary reset monitor; valid operation from 1.0V to 5.5V

Key Features

Feature	Design Value
Capacitor-adjustable reset timeout	Enables precise tailoring of reset duration (275µs–5.75ms) without firmware changes or component swaps
Guaranteed reset validity to V_CC = 1V	Ensures deterministic μP behavior during deep undervoltage events, critical for fail-safe embedded control
Low 1.7µA quiescent current	Minimizes battery drain in always-on monitoring applications such as medical wearables and remote sensors
Power-supply transient immunity	Rejects <50µs negative-going transients ≥100mV below threshold, preventing spurious resets in noisy environments
AEC-Q100 qualified variants available	Supports automotive-grade reliability requirements (Grade 0/1) when ordered with /V suffix

Applications

Battery-Powered Portable Equipment	Automotive Body Control Modules
Use Scenario: Monitoring 1.8V LDO output powering a BLE microcontroller in a handheld diagnostic tool. IC Role / Device Role / Timing Role: Supervises V_CC and provides programmable reset hold time to ensure complete μP initialization before code execution. Use Value: 1.7µA supply current extends battery life beyond 5 years; 1.575V threshold matches common 1.8V rail tolerance.	Use Scenario: Reset supervision for a LIN bus node controlling door locks in temperature ranges from -40°C to +125°C. IC Role / Device Role / Timing Role: Provides cold-cranking robustness by asserting reset until stable 5V supply is established post-battery dip. Use Value: Guaranteed operation at -40°C and AEC-Q100 qualification ensure compliance with automotive environmental stress testing.
Industrial Embedded Controllers	Medical Patient Monitoring Devices
Use Scenario: Ensuring safe startup of a Cortex-M4-based PLC I/O module after AC power restoration. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and generates a 4.375ms reset pulse (with 1500pF SRT cap) to meet μP's minimum reset width requirement. Use Value: Push-pull output drives reset pin without external components; capacitor-adjustable timing avoids BOM proliferation.	Use Scenario: Supervising dual rails (3.3V logic, 1.2V core) in a portable ECG analyzer using MAX6418 variant; MAX6412UK16 used for single-rail backup subsystem. IC Role / Device Role / Timing Role: Acts as secondary supervisor for non-critical subsystems, providing fail-safe reset independent of primary supervisor. Use Value: Small SOT23-5 footprint saves PCB space in compact wearable form factors; low leakage prevents signal integrity issues on high-impedance analog paths.

Battery-Powered Portable Equipment

Automotive Body Control Modules

Use Scenario: Monitoring 1.8V LDO output powering a BLE microcontroller in a handheld diagnostic tool.

IC Role / Device Role / Timing Role: Supervises V_CC and provides programmable reset hold time to ensure complete μP initialization before code execution.

Use Value: 1.7µA supply current extends battery life beyond 5 years; 1.575V threshold matches common 1.8V rail tolerance.

Use Scenario: Reset supervision for a LIN bus node controlling door locks in temperature ranges from -40°C to +125°C.

IC Role / Device Role / Timing Role: Provides cold-cranking robustness by asserting reset until stable 5V supply is established post-battery dip.

Use Value: Guaranteed operation at -40°C and AEC-Q100 qualification ensure compliance with automotive environmental stress testing.

Industrial Embedded Controllers

Medical Patient Monitoring Devices

Use Scenario: Ensuring safe startup of a Cortex-M4-based PLC I/O module after AC power restoration.

IC Role / Device Role / Timing Role: Monitors main 3.3V supply and generates a 4.375ms reset pulse (with 1500pF SRT cap) to meet μP's minimum reset width requirement.

Use Value: Push-pull output drives reset pin without external components; capacitor-adjustable timing avoids BOM proliferation.

Use Scenario: Supervising dual rails (3.3V logic, 1.2V core) in a portable ECG analyzer using MAX6418 variant; MAX6412UK16 used for single-rail backup subsystem.

IC Role / Device Role / Timing Role: Acts as secondary supervisor for non-critical subsystems, providing fail-safe reset independent of primary supervisor.

Use Value: Small SOT23-5 footprint saves PCB space in compact wearable form factors; low leakage prevents signal integrity issues on high-impedance analog paths.

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor reset applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6316LUK16D3+	Fixed 1.575V threshold, active-low open-drain RESET, 1.6µA ICC, same SOT23-5 package	Lacks manual reset input; requires external pullup; better suited for level-shifting or wired-OR reset buses	Select when open-drain topology is needed for shared reset lines or mixed-voltage systems.
TPS3808G16DBVR	1.6V threshold (±0.5%), 1.1µA ICC, fixed 200ms timeout, no SRT capacitor option, same SOT23-5	No manual reset or adjustable timeout; tighter threshold accuracy but inflexible timing	Select when deterministic, factory-set timeout suffices and ultra-low current (<1.5µA) is prioritized over configurability.

Compared with MAX6412UK16, MAX6316LUK16D3+ trades manual reset and push-pull drive for open-drain flexibility, while TPS3808G16DBVR sacrifices timeout adjustability and MR for lower current and higher threshold accuracy-making MAX6412UK16 optimal where field-programmable reset timing and operator-initiated reset are required.

Availability

MAX6412UK16 is available at Aetrix Electronics and suitable for battery-powered computers/controllers, automotive body electronics, and industrial embedded controllers requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant alternatives.

Supply support for MAX6412UK16 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, with expertise in power management, sensing, and interface solutions.

The MAX6412–MAX6420 family was engineered specifically for ultra-low-power microprocessor supervision in space-constrained, battery-sensitive, and high-reliability systems-emphasizing configurable reset timing, wide V_CC range, and automotive-grade robustness.

FAQ

What is the exact reset threshold voltage of MAX6412UK16?

The MAX6412UK16 has a nominal V_CC 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 laser-trimmed at the factory and corresponds to the "16" suffix in the part number per Table 1 of the datasheet.

Does MAX6412UK16 support dual-voltage monitoring?

No, MAX6412UK16 does not support dual-voltage monitoring. It monitors only V_CC with a fixed 1.575V threshold. Dual-voltage capability requires models like MAX6418UK16, which include both a fixed V_CC threshold and an adjustable RESET IN input.

How do I calculate the SRT capacitor value for a desired reset timeout with MAX6412UK16?

Use the formula C_SRT = (t_RP – 275µs) / 2.71×10⁶, where t_RP is the desired timeout in seconds and C_SRT is in farads. For example, a 4.375ms timeout requires a 1500pF capacitor. Ceramic capacitors with <10nA leakage are recommended.

Is MAX6412UK16 qualified for automotive applications?

The base MAX6412UK16 is not automotive-qualified. However, Maxim offers /V-suffixed variants (e.g., MAX6412UK16/V+T) that are AEC-Q100 Grade 0 qualified (-40°C to +125°C) and designed for automotive use. Always verify the full part number includes "/V" for automotive compliance.

What is the function of the MR pin on MAX6412UK16?

The MR (Manual Reset) pin on MAX6412UK16 is an active-low input that forces a reset when pulled below V_IL (≤0.3×V_CC). It features a 20kΩ internal pullup resistor, allowing direct connection to a momentary switch to ground. Reset remains asserted for the full timeout period after MR is released.

MAX6412UK16 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 FAQ

1.How can I place an order for MAX6412UK16 through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX6412UK16 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 reliable?

The price and inventory of MAX6412UK16 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6412UK16 is usually 5 days.

3.What payment methods are accepted for MAX6412UK16?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6412UK16 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX6412UK16?

MAX6412UK16 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX6412UK16 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?

For technical support, including MAX6412UK16 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6412UK16 requirements.

6.How does Aetrix verify that MAX6412UK16 is sourced from the original manufacturer or authorized distributors?

All MAX6412UK16 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 meets industry standards.

7.What is the process for return or replacement of MAX6412UK16?

All MAX6412UK16 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6412UK16, 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 part is unused and in its original packaging.

Return procedure for MAX6412UK16:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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