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Analog Devices Inc./Maxim Integrated MAX6413UK46+T
- Part No.:
- MAX6413UK46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6413UK46+T.pdf
- Description:
- IC RESET MPU LOW PWR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,702
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Product details
Overview
MAX6413UK46+T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 4.625V VCC reset threshold, active-high push-pull reset output, manual reset input (MR), and capacitor-adjustable reset timeout. It monitors VCC supply voltage in systems requiring precise brownout detection and reliable power-on reset for embedded controllers operating from 1.6V to 5V supplies.
For engineers reviewing the MAX6413UK46+T datasheet, MAX6413UK46+T pinout, MAX6413UK46+T application, or MAX6413UK46+T equivalent, this device supports critical μP monitoring in automotive, medical, and battery-powered equipment where guaranteed reset validity down to VCC = 1V, 1.7μA quiescent current, and AEC-Q100-qualified variants are essential selection criteria.
Technical Context
The MAX6413UK46+T implements a factory-trimmed bandgap-based voltage comparator for VCC monitoring at 4.625V ±2.5% over -40°C to +125°C, with hysteresis of 4×VTH (≈18.5mV). Its internal 240nA SRT ramp current charges an external capacitor to set reset timeout, enabling programmable delays from 275μs (no capacitor) to >5ms (1500pF).
It features a dedicated MR pin with 20kΩ internal pullup, glitch rejection of 75ns, and 20ns MR-to-RESET propagation delay. The active-high push-pull RESET output delivers VOH ≥0.8×VCC at ISOURCE = 200µA and VOL ≤0.3V at ISINK = 50µA, ensuring robust logic-level compatibility across 1.0V–5.5V VCC operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 4.625V ±2.5% over full temperature range - ensures accurate brownout detection for 5V systems with margin against supply ripple. |
| Quiescent Current | 1.7μA (typ) at VCC ≤2.0V - enables multi-year battery life in portable and remote sensor applications. |
| Reset Timeout Range | 275μs to 5.75ms (CSRT = 0F to 1500pF) - supports wide range of μP reset timing requirements without firmware dependency. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and provides fast, low-impedance assertion/deassertion. |
| VCC Supply Range | 1.0V to 5.5V - guarantees valid reset operation during deep brownout conditions down to 1V. |
| MR Input Logic | VIL ≤0.3×VCC, VIH ≥0.7×VCC - compatible with standard CMOS logic levels across all supply voltages. |
Pinout & Package
SOT23-5 package (5-pin, 2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch), RoHS-compliant, lead-free (+T suffix), thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull reset output | Drives μP reset input directly; sinks 50µA at VOL ≤0.3V and sources 200µA at VOH ≥0.8×VCC. |
| 2 - GND | Ground reference | Primary return path for internal comparators, SRT current source, and RESET driver; must be low-impedance. |
| 3 - MR | Manual reset input | Logic-low active input with 20kΩ internal pullup; asserts reset for timeout period upon deassertion. |
| 4 - SRT | Set reset timeout input | Connects to external capacitor; 240nA constant current charges CSRT to generate precise timeout delay. |
| 5 - VCC | Supply voltage and monitored rail | Powers device and serves as primary monitored voltage; valid operation guaranteed from 1.0V to 5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise, application-specific reset duration tuning from 275μs to >5ms using one external capacitor - no firmware or external logic required. |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic μP reset state during deep brownout recovery, eliminating race conditions in low-voltage power sequencing. |
| Power-supply transient immunity | Rejects negative-going VCC glitches ≤50μs when overdrive is ≤100mV - prevents spurious resets in noisy automotive/industrial environments. |
| Low-leakage SRT interface | 240nA precision ramp current minimizes sensitivity to PCB leakage and stray capacitance - enables stable timeout even on high-impedance layouts. |
| AEC-Q100 qualification | Validated for automotive applications (Grade 0: -40°C to +125°C); available in /V variants with enhanced reliability testing and traceability. |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Infusion Pump |
|---|---|
Use Scenario: Monitors 5V system rail in engine ECU exposed to load dump and cold-crank transients. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to MCU during brownout, with 4.625V threshold matching nominal 5V regulator tolerance. Use Value: Prevents code corruption during cranking (VCC dip to 3.5V) by holding RESET asserted until VCC stabilizes above 4.625V and timeout expires. |
Use Scenario: Ensures safe startup and fault recovery in battery-powered infusion pump with dual 3.3V/5V rails. IC Role / Device Role / Timing Role: Primary VCC supervisor for main controller; MR pin connected to emergency stop button for hardware-initiated reset. Use Value: 1.7μA quiescent current extends single-charge battery life; 20ns MR-to-RESET delay guarantees immediate response to safety-critical stop commands. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Provides fail-safe reset in DIN-rail mounted PLC module operating in harsh factory environments (-40°C to +85°C). IC Role / Device Role / Timing Role: Supervises 5V backplane supply; SRT capacitor set to 4.375ms to exceed longest μP reset requirement in module family. Use Value: Push-pull output drives long PCB traces without signal degradation; guaranteed operation to +125°C supports convection-cooled enclosures. |
Use Scenario: Monitors 3.3V microcontroller supply in revenue-grade meter subject to utility grid sags and surges. IC Role / Device Role / Timing Role: Brownout detector with 4.625V threshold applied to 5V auxiliary rail powering real-time clock and communication ICs. Use Value: 2.5% threshold accuracy over temperature ensures consistent trip point across seasonal ambient variations; AEC-Q100 qualification validates long-term reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6413UK45+T | Fixed 4.500V reset threshold (±2.5%), identical pinout, timing, and electrical specs. | Suitable for systems with tighter 5V rail tolerance (e.g., LDO-regulated 5V ±3%) requiring earlier reset assertion. | Select MAX6413UK45+T when VCC nominal is 5.0V with ±3% regulation; MAX6413UK46+T preferred for ±5% or wider tolerance rails. |
| TPS3808G33DBVR | Fixed 3.3V threshold, 350ms min timeout (non-adjustable), 2.5μA ICC, SOT23-5 package. | Lacks manual reset and capacitor-adjustable timeout; optimized for simpler, cost-sensitive 3.3V systems without transient immunity requirements. | Choose TPS3808G33DBVR only for basic 3.3V supervision where adjustable timeout and MR are unnecessary; MAX6413UK46+T required for 5V systems needing design flexibility. |
Compared with MAX6413UK45+T, MAX6413UK46+T provides higher reset threshold for improved noise margin on nominal 5V rails; versus TPS3808G33DBVR, it offers field-programmable timeout, manual reset, and superior transient immunity - critical for automotive and industrial deployment.
Availability
MAX6413UK46+T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical devices, and industrial PLC modules requiring stable component supply with guaranteed long-term availability and AEC-Q100 compliance.
Supply support for MAX6413UK46+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 product line delivers ultra-low-power, capacitor-programmable microprocessor supervisors targeting applications where deterministic power-on reset, brownout protection, and extended temperature operation are mandatory.
FAQ
What is the exact reset threshold voltage of MAX6413UK46+T?
The MAX6413UK46+T has a factory-trimmed VCC reset threshold of 4.625V, 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 "46" suffix per the Reset Voltages Suffix Table in the datasheet.
Does MAX6413UK46+T support manual reset functionality?
Yes, MAX6413UK46+T includes a dedicated MR (manual reset) input on Pin 3. A logic-low pulse on MR asserts the active-high RESET output for the full timeout period after MR returns high. The pin features a 20kΩ internal pullup resistor, allowing direct connection to a momentary switch without external components.
What is the minimum and maximum reset timeout period achievable with MAX6413UK46+T?
With MAX6413UK46+T, the reset timeout period ranges from 275μs (when SRT is left unconnected or shorted to ground) to 5.75ms (with CSRT = 1500pF). The relationship is linear: tRP = (2.71 × 10⁶) × CSRT + 275μs, where CSRT is in farads and tRP in seconds.
Is MAX6413UK46+T qualified for automotive applications?
The base MAX6413UK46+T is specified for -40°C to +125°C and meets AEC-Q100 stress test requirements. Automotive-grade variants are designated with "/V" suffix (e.g., MAX6413UK46/V+T), which include additional qualification testing, enhanced traceability, and extended reliability validation per AEC-Q100 Grade 0.
What package type and footprint does MAX6413UK46+T use?
MAX6413UK46+T is supplied in a RoHS-compliant, lead-free SOT23-5 package (package code U5+2A, outline 21-0057). Its 5-pin footprint measures 2.9mm × 1.6mm with 0.95mm pin pitch and requires land pattern 90-0174 per Maxim's package documentation.
MAX6413UK46+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:
- 4.625V
- 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
MAX6413UK46+T FAQ
1.How can I place an order for MAX6413UK46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6413UK46+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 MAX6413UK46+T reliable?
The price and inventory of MAX6413UK46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6413UK46+T is usually 5 days.
3.What payment methods are accepted for MAX6413UK46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6413UK46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6413UK46+T?
MAX6413UK46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6413UK46+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 MAX6413UK46+T?
For technical support, including MAX6413UK46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6413UK46+T requirements.
6.How does Aetrix verify that MAX6413UK46+T is sourced from the original manufacturer or authorized distributors?
All MAX6413UK46+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 MAX6413UK46+T meets industry standards.
7.What is the process for return or replacement of MAX6413UK46+T?
All MAX6413UK46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6413UK46+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 MAX6413UK46+T part is unused and in its original packaging.
Return procedure for MAX6413UK46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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