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Analog Devices Inc./Maxim Integrated MAX6413UK31+T
- Part No.:
- MAX6413UK31+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6413UK31+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,076
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Product details
Overview
The MAX6413UK31+T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 3.075V VCC reset threshold, active-high push-pull reset output, manual reset input (MR), and capacitor-adjustable reset timeout. It monitors supply voltage in battery-powered controllers and embedded systems, asserting reset during brownout or power-up until timeout expires after recovery. Operating from -40°C to +125°C, it draws only 1.7µA typical supply current at 2V.
For engineers reviewing the MAX6413UK31+T datasheet, MAX6413UK31+T pinout, MAX6413UK31+T application, or MAX6413UK31+T equivalent, key selection criteria include its factory-trimmed 3.075V threshold accuracy (±2.5% over temperature), SRT-pin-based timeout adjustability (275µs to >5ms), guaranteed RESET validity down to VCC = 1V, MR pulse rejection (75ns), and AEC-Q100-qualified automotive suitability when ordered with /V suffix.
Technical Context
This device implements a precision bandgap-based voltage comparator for VCC monitoring and a high-impedance manual reset input with internal 20kΩ pullup. Its reset timeout is generated by a 240nA current source charging an external capacitor on the SRT pin to a 0.65V internal reference.
The active-high push-pull RESET output drives logic-compatible levels (VOH ≥ 0.8×VCC, VOL ≤ 0.4V) across 1.0V–5.5V supply range, with guaranteed valid assertion even as VCC drops to 1V - critical for reliable μP initialization in low-voltage brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.075V nominal, ±2.5% over -40°C to +125°C - ensures consistent brownout detection across automotive/industrial temperature ranges |
| Supply Current | 1.7µA typical at VCC ≤ 2.0V - enables multi-year operation in coin-cell-powered IoT sensors |
| Reset Timeout Range | 275µs (CSRT = 0F) to 5.75ms (CSRT = 1500pF) - supports wide range of μP reset timing requirements |
| MR Input Pulse Width | Minimum 1µs - allows clean reset initiation from short-duration mechanical switch closures |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and simplifies interface to most μP reset inputs |
| Operating Temperature | -40°C to +125°C - meets extended industrial and under-hood automotive requirements |
| Package | SOT23-5 - compact 2.9mm × 1.6mm footprint ideal for space-constrained portable designs |
Pinout & Package
SOT23-5 package: 5-pin surface-mount, 2.9mm × 1.6mm body, 0.95mm height, gull-wing leads, RoHS-compliant (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull reset output | Drives high-impedance μP reset input directly; sinks 3.2mA at VCC ≥ 4.5V, sources 800µA at same rail |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external capacitor (SRT-to-GND) |
| 3 - MR | Manual reset input | Logic-low active; internally pulled up to VCC via 20kΩ - requires no external components for basic switch interface |
| 4 - SRT | Set reset timeout input | Connects to external timing capacitor; 240nA constant current charges CSRT to 0.65V reference to define timeout period |
| 5 - VCC | Supply voltage and monitored rail | Power input (1.0V–5.5V) and primary voltage monitor; reset asserted if VCC falls below 3.075V |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise tailoring of reset duration (275µs–5.75ms) without firmware changes or BOM revisions |
| Guaranteed RESET validity to VCC = 1V | Ensures deterministic μP reset behavior during deep brownout - prevents runaway code execution below 1.8V logic thresholds |
| 20kΩ internal MR pullup | Eliminates external pullup resistor, reducing component count and PCB area in cost-sensitive consumer electronics |
| 75ns MR glitch rejection | Rejects EMI-induced noise on manual reset line, preventing spurious resets in electrically noisy environments like motor drives |
| AEC-Q100 qualified option | Available with /V suffix for automotive applications requiring qualification to stress test standards for Grade 0 (-40°C to +125°C) |
Applications
| Battery-Powered Controllers | Automotive Body Electronics |
|---|---|
Use Scenario: Supervising 3.3V microcontroller in wireless sensor node powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Monitors VCC for brownout; asserts active-high RESET until capacitor-charged timeout expires after voltage recovery. Use Value: Prevents corrupted EEPROM writes during low-battery undervoltage events, extending field lifetime beyond 5 years. | Use Scenario: Reset management for door module MCU in passenger vehicle cabin. IC Role / Device Role / Timing Role: Detects 12V system dips during load dump; holds MCU in reset for 3.5ms using 1nF SRT capacitor. Use Value: Eliminates software lockups during alternator transients, meeting ISO 7637-2 Pulse 5a immunity requirements. |
| Medical Infusion Pumps | Industrial PLC I/O Modules |
Use Scenario: Ensuring safe startup of ARM Cortex-M4 controller in Class II medical device. IC Role / Device Role / Timing Role: Provides fail-safe reset during AC/DC adapter power-up sequencing; manual reset via front-panel button. Use Value: Meets IEC 62304 SW safety requirement for deterministic boot state, avoiding unintended motor activation. | Use Scenario: Supervising isolated 5V supply powering digital I/O ASIC in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Monitors both 5V rail and optional external 24V auxiliary supply via RESET IN (when used in MAX6419 variant); this part handles primary rail only. Use Value: Guarantees clean reset assertion before FPGA configuration begins, preventing metastability in safety-critical control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6413UK31-T | Same electrical specs but leaded (Pb) package; no RoHS compliance | Not suitable for EU/China export or new medical designs requiring lead-free assembly | Select only for legacy rework or non-RoHS production environments |
| TPS3808G33DBVR | Fixed 3.3V threshold, 200ms min timeout (non-adjustable), 2.5µA ICC | Lacks capacitor-adjustable timeout and manual reset input; less flexible for custom timing needs | Choose when standardized long reset duration suffices and MR functionality is unnecessary |
Compared with MAX6413UK31+T, the MAX6413UK31-T offers identical performance in leaded packaging but fails modern environmental compliance, while the TPS3808G33DBVR trades adjustable timeout and MR flexibility for simpler fixed-timing implementation and slightly higher quiescent current.
Availability
MAX6413UK31+T is available at Aetrix Electronics and suitable for battery-powered controllers, automotive body electronics, and medical infusion pumps requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6413UK31+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 MAX6412–MAX6420 family delivers ultra-low-power, temperature-stable microprocessor supervision with flexible reset timing - engineered specifically for reliability-critical embedded systems where voltage monitoring integrity cannot be compromised.
FAQ
What is the exact reset threshold voltage of the MAX6413UK31+T?
The MAX6413UK31+T has a factory-trimmed VCC reset threshold of 3.075V nominal, with tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in Table 1 of the datasheet, where suffix "31" corresponds to min/typ/max values of 2.998V/3.075V/3.152V. The threshold is implemented using laser-trimmed resistors for high stability.
Does the MAX6413UK31+T support dual-voltage monitoring?
No, the MAX6413UK31+T does not support dual-voltage monitoring. It belongs to the MAX6412/MAX6413/MAX6414 subgroup, which features only a fixed-threshold VCC monitor and manual reset input (MR). Dual-voltage capability requires the MAX6418/MAX6419/MAX6420 series, which include both fixed and adjustable RESET IN inputs - a function absent in the MAX6413UK31+T.
How do I calculate the reset timeout capacitor for the MAX6413UK31+T?
To set a desired reset timeout period (tRP) in seconds for the MAX6413UK31+T, use the formula CSRT = (tRP − 275µs) / 2.71×10⁶, where CSRT is in farads. For example, a 4.375ms timeout requires CSRT = (0.004375 − 0.000275) / 2.71×10⁶ = 1500pF. Use low-leakage ceramic capacitors; avoid electrolytics or high-DA types that degrade timing accuracy.
Is the MAX6413UK31+T qualified for automotive applications?
The base MAX6413UK31+T is not automotive-qualified. However, Maxim offers an AEC-Q100 qualified version designated MAX6413UK31/V+T (with /V suffix), which undergoes additional stress testing for Grade 0 temperature range (-40°C to +125°C). Always verify ordering code suffixes - the +T alone indicates RoHS compliance but not automotive qualification.
What is the maximum supply voltage the MAX6413UK31+T can tolerate?
The MAX6413UK31+T has an absolute maximum VCC rating of +6.0V, but its functional operating range is specified from 1.0V to 5.5V. Operation above 5.5V risks permanent damage, while operation below 1.0V may cause undefined reset behavior. For robust design, maintain VCC within 1.0V–5.5V and ensure transient immunity per the "Maximum Transient Duration vs. Reset Threshold Overdrive" curve in the datasheet.
MAX6413UK31+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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.075V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6413UK31+T FAQ
1.How can I place an order for MAX6413UK31+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6413UK31+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 MAX6413UK31+T reliable?
The price and inventory of MAX6413UK31+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6413UK31+T is usually 5 days.
3.What payment methods are accepted for MAX6413UK31+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6413UK31+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6413UK31+T?
MAX6413UK31+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6413UK31+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 MAX6413UK31+T?
For technical support, including MAX6413UK31+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6413UK31+T requirements.
6.How does Aetrix verify that MAX6413UK31+T is sourced from the original manufacturer or authorized distributors?
All MAX6413UK31+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 MAX6413UK31+T meets industry standards.
7.What is the process for return or replacement of MAX6413UK31+T?
All MAX6413UK31+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6413UK31+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 MAX6413UK31+T part is unused and in its original packaging.
Return procedure for MAX6413UK31+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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