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Analog Devices Inc./Maxim Integrated MAX6413UK26+T
- Part No.:
- MAX6413UK26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6413UK26+T.pdf
- Description:
- IC RESET MPU LOW PWR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,548
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Product details
Overview
MAX6413UK26+T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 2.625V 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 guarantees valid reset logic down to VCC = 1V.
For engineers reviewing the MAX6413UK26+T datasheet, MAX6413UK26+T pinout, MAX6413UK26+T application, or MAX6413UK26+T equivalent, key selection criteria include its 2.625V ±2.5% threshold accuracy over temperature, 1.7µA typical quiescent current at 2V, SOT23-5 package compatibility, and capacitor-programmable timeout (275µs to 5.75ms) for μP reset timing alignment.
Technical Context
The MAX6413UK26+T implements a precision bandgap-based voltage comparator for VCC monitoring with factory-trimmed 2.625V threshold and 4×VTH hysteresis (≈10.5mV). Its reset timeout is generated by a 240nA internal current source charging an external capacitor on the SRT pin to a 0.65V ramp threshold.
It features a high-impedance MR input with 20kΩ internal pullup, glitch rejection of 75ns, and MR-to-RESET delay of 20ns. The active-high push-pull RESET output delivers VOH ≥ 0.8×VCC (at ISOURCE = 200µA) and VOL ≤ 0.4V (at ISINK = 3.2mA), ensuring robust interface with modern microprocessors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.625V ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive/industrial temperature range |
| Quiescent Current | 1.7µA typ at VCC = 2.0V - enables multi-year operation in coin-cell–powered IoT sensors |
| Reset Timeout Range | 275µs to 5.75ms (CSRT = 0F to 1500pF) - supports short boot sequences or long firmware initialization |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor, simplifies PCB layout |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control applications |
| Supply Voltage Range | 1.0V to 5.5V - operates during deep brownout and supports wide-input power rails |
| MR Input Logic | Active-low with 20kΩ internal pullup - allows momentary switch interface without external components |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch, RoHS-compliant lead-free termination (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull reset output | Drives μP reset pin directly; sinks 3.2mA or sources 800µA; valid for VCC ≥ 1.0V |
| 2 - GND | Ground reference | Common return path for all internal circuitry and external capacitor (SRT) |
| 3 - MR | Manual reset input | Active-low; internally pulled up to VCC (20kΩ); deasserts reset after 20ns delay |
| 4 - SRT | Set reset timeout input | Connects to external capacitor; 240nA constant current charges CSRT to 0.65V threshold |
| 5 - VCC | Supply voltage and monitored rail | Powers device and serves as primary reset trigger; valid down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise timing alignment with μP boot sequence via single external capacitor (CSRT) |
| Factory-trimmed 2.625V threshold | Eliminates external resistor divider; reduces BOM count and improves long-term stability vs. discrete solutions |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic system behavior during deep undervoltage conditions without external biasing |
| Power-supply transient immunity | Rejects <50µs negative-going VCC glitches ≥100mV below threshold - prevents spurious resets in noisy environments |
| AEC-Q100 qualified option | Available in /V automotive-grade variant - supports functional safety-critical reset monitoring in ADAS and powertrain ECUs |
Applications
| Automotive Body Control Module | Portable Medical Sensor Hub |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply in door module during cold cranking (VCC dips to 2.8V). IC Role / Device Role / Timing Role: Supervisor asserts active-high RESET until VCC recovers above 2.625V and holds for 4.375ms (CSRT = 1500pF) to ensure full μP initialization. Use Value: Prevents erratic CAN communication due to partial μP execution during voltage sag - meets ISO 16750-2 pulse 4 immunity requirements. | Use Scenario: Powers-on wearable ECG sensor with BLE radio; battery voltage decays from 3.6V to 2.5V over 24h. IC Role / Device Role / Timing Role: Detects VCC crossing 2.625V threshold during startup and asserts RESET for 275µs (CSRT = 0F) to synchronize analog front-end calibration. Use Value: Eliminates data corruption during first ADC sample by guaranteeing μP reset before analog signal chain powers up. |
| Industrial PLC I/O Expansion Card | Battery-Powered Smart Meter |
Use Scenario: Supervises isolated 5V logic rail powering FPGA configuration memory in harsh factory environment. IC Role / Device Role / Timing Role: Uses MR pin to initiate controlled firmware update reset; timeout set to 5.75ms to accommodate FPGA reconfiguration latency. Use Value: Enables safe field updates without risk of partial bitstream loading - avoids FPGA configuration lockup. | Use Scenario: Monitors main 3.6V Li-ion supply in AMI meter; detects end-of-life voltage drop below 2.625V. IC Role / Device Role / Timing Role: Generates active-high RESET to halt metrology processor and trigger EEPROM save of last valid kWh reading before shutdown. Use Value: Preserves billing integrity by ensuring critical energy data is committed prior to brownout-induced power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6413UK26-T | Same electrical specs but leaded (Pb) packaging; no RoHS compliance | Not suitable for EU/China export or new medical designs requiring lead-free assembly | Select only if legacy manufacturing line requires Pb-based soldering. |
| TPS3808G26DBVR | Fixed 2.63V threshold, 350nA IQ, 200ms min timeout (non-adjustable), SOT23-6 package | Lacks capacitor-adjustable timeout and MR input; requires different PCB footprint | Choose when minimal IQ dominates design and fixed timeout suffices; verify pin compatibility. |
Compared with MAX6413UK26+T, the MAX6413UK26-T offers identical performance in non-RoHS environments but lacks environmental compliance, while the TPS3808G26DBVR trades timeout flexibility and MR functionality for ultra-low quiescent current and tighter threshold tolerance - making it suitable only where those specific trade-offs align with system requirements.
Availability
MAX6413UK26+T is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensor hubs, industrial PLC I/O expansion cards, and battery-powered smart meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6413UK26+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 reliability, low power, and high integration.
The MAX6412–MAX6420 family was engineered specifically for microprocessor reset supervision in space-constrained, battery-sensitive, and thermally aggressive environments - delivering programmable timing, guaranteed low-voltage operation, and AEC-Q100 qualification options.
FAQ
What is the exact reset threshold voltage for MAX6413UK26+T?
The MAX6413UK26+T has a factory-trimmed VCC reset threshold of 2.625V, with ±1.25% accuracy at +25°C and ±2.5% over the full -40°C to +125°C operating range. This value is confirmed in the Electrical Characteristics table and corresponds to the "26" suffix per the Reset Voltages Suffix Table in the datasheet.
Does MAX6413UK26+T support dual-voltage monitoring?
No, MAX6413UK26+T does not support dual-voltage monitoring. It is a single-threshold supervisor with fixed VCC monitoring only. Dual-voltage capability is exclusive to the MAX6418/MAX6419/MAX6420 variants, which include both a fixed VCC threshold and an adjustable RESET IN input - a feature absent in the MAX6413UK26+T pinout and functional description.
How do I calculate the reset timeout capacitor for MAX6413UK26+T?
Use the formula CSRT = (tRP − 275µs) / 2.71×10⁶, where tRP is the desired timeout in seconds and CSRT is in farads. For example, a 4.375ms timeout requires CSRT = (0.004375 − 0.000275) / 2.71×10⁶ = 1500pF. The MAX6413UK26+T datasheet specifies this relationship in the Electrical Characteristics and Application Information sections.
Can MAX6413UK26+T operate with VCC below 1.0V?
MAX6413UK26+T is specified to operate from VCC = 1.0V to 5.5V. Below 1.0V, the RESET output is not guaranteed - its sourcing/sinking capability degrades significantly. The datasheet explicitly states "guaranteed reset valid to VCC = 1V", and recommends external pullup/pulldown resistors for sub-1V operation, which is outside MAX6413UK26+T's rated functionality.
Is MAX6413UK26+T pin-compatible with other MAX641x devices in SOT23-5?
Yes, MAX6413UK26+T shares identical SOT23-5 pinout and package dimensions with all MAX6412–MAX6420 variants, including MAX6412UK26+T and MAX6414UK26+T. However, output polarity (active-high vs. active-low) and presence of RESET IN or MR inputs differ - so direct substitution requires verification of reset logic polarity and external circuit compatibility.
MAX6413UK26+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:
- 2.625V
- 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
MAX6413UK26+T FAQ
1.How can I place an order for MAX6413UK26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6413UK26+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 MAX6413UK26+T reliable?
The price and inventory of MAX6413UK26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6413UK26+T is usually 5 days.
3.What payment methods are accepted for MAX6413UK26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6413UK26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6413UK26+T?
MAX6413UK26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6413UK26+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 MAX6413UK26+T?
For technical support, including MAX6413UK26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6413UK26+T requirements.
6.How does Aetrix verify that MAX6413UK26+T is sourced from the original manufacturer or authorized distributors?
All MAX6413UK26+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 MAX6413UK26+T meets industry standards.
7.What is the process for return or replacement of MAX6413UK26+T?
All MAX6413UK26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6413UK26+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 MAX6413UK26+T part is unused and in its original packaging.
Return procedure for MAX6413UK26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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