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Analog Devices Inc./Maxim Integrated MAX6413UK29+T
- Part No.:
- MAX6413UK29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6413UK29+T.pdf
- Description:
- IC MPU/RESET CIRC 2.925V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,392
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Product details
Overview
The MAX6413UK29+T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 2.925V 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 VCC exceeds 2.925V and remains asserted for ≥3.0ms after recovery. Designed for automotive-grade operation, it operates from -40°C to +125°C.
For engineers reviewing the MAX6413UK29+T datasheet, MAX6413UK29+T pinout, MAX6413UK29+T application, or MAX6413UK29+T equivalent, key selection criteria include its factory-trimmed 2.925V threshold accuracy (±2.5% over temperature), 1.7µA typical quiescent current at 2V, guaranteed reset validity down to VCC = 1V, and SOT23-5 package compatibility with space-constrained PCB layouts.
Technical Context
This device implements a precision bandgap-based voltage comparator for VCC monitoring and a separate manual reset input with internal 20kΩ pullup. The reset timeout period is generated by a 240nA current source charging an external capacitor on the SRT pin, referenced to a stable 0.65V internal threshold.
Its active-high push-pull RESET output drives logic-high during normal operation and transitions low only during reset assertion. The MR input accepts standard TTL/CMOS logic levels and provides 75ns glitch rejection, enabling robust manual intervention without external debouncing circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.925V nominal, ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive temperature range |
| Quiescent Current | 1.7µA typ at VCC ≤ 2.0V - enables multi-year battery life in always-on monitoring applications |
| Reset Timeout Period | 3.00–5.75ms with 1500pF SRT capacitor - configurable delay prevents premature μP release during slow-rising supplies |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct interface to μP reset inputs |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Supply Voltage Range | 1.0V to 5.5V - supports operation during deep brownout and compatibility with 1.8V/3.3V/5V systems |
| MR Input Pullup | 20kΩ internal - allows direct switch-to-ground connection without external components |
Pinout & Package
SOT23-5 package: 5-pin surface-mount, 1.6mm × 2.9mm footprint, 1.1mm height, RoHS-compliant lead-free (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull reset output | Drives high during normal operation; pulls low for reset assertion; sinks/source capability supports direct μP reset pin drive |
| 2 - GND | Ground reference | Primary return path for internal comparators and output stage; must be low-impedance for accurate threshold sensing |
| 3 - MR | Manual reset input | Logic-low active input with internal 20kΩ pullup; deasserts reset after timeout when released; 75ns glitch immunity prevents false triggers |
| 4 - SRT | Set reset timeout input | Connects to external timing capacitor; 240nA constant current charges CSRT to 0.65V to define timeout period |
| 5 - VCC | Supply voltage and monitored rail | Power input and primary voltage monitor; reset asserts if VCC falls below 2.925V; valid operation down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.925V with ±2.5% tolerance over full temperature range - eliminates calibration effort and reduces BOM count |
| Capacitor-adjustable timeout | Configurable 0.275ms to >100ms delay via single external capacitor - adapts to diverse μP reset timing requirements |
| Low quiescent current | 1.7µA typical at 2V - extends battery life in portable medical instruments and remote sensors |
| Power-supply transient immunity | Rejects 50µs transients 100mV below threshold - prevents spurious resets in electrically noisy automotive environments |
| AEC-Q100 qualified option | /V variants available - meets stress test requirements for automotive electronics including temperature cycling and HAST |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Infusion Pump |
|---|---|
Use Scenario: Monitors 3.3V microcontroller supply during cold cranking when battery voltage dips to 6V. IC Role / Device Role / Timing Role: Supervises VCC rail and asserts active-high RESET to hold ECU in reset until stable 3.3V is confirmed. Use Value: Prevents erratic code execution during marginal supply conditions using guaranteed reset validity down to VCC = 1V. |
Use Scenario: Ensures safe startup of ARM Cortex-M4 controller in battery-powered infusion pump with dual 1.8V/3.3V rails. IC Role / Device Role / Timing Role: Provides precise 2.925V reset threshold and 4.375ms timeout to meet IEC 60601-1 power-on self-test timing. Use Value: Enables compliance with medical safety standards through deterministic reset behavior and AEC-Q100-grade reliability. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Guards against brownout-induced firmware corruption in DIN-rail mounted programmable logic controller modules. IC Role / Device Role / Timing Role: Detects VCC drop below 2.925V and holds μP in reset for ≥3.0ms after recovery to ensure clean restart. Use Value: Eliminates need for external RC network with 1.7µA supply current - reduces thermal drift and improves long-term stability. |
Use Scenario: Maintains secure boot integrity in AMI meter during grid voltage sags and lightning-induced transients. IC Role / Device Role / Timing Role: Uses MR pin for tamper-triggered reset and SRT capacitor for programmable hold-off time during power restoration. Use Value: Supports anti-tampering features and meets ANSI C12.1 voltage sag immunity requirements via 75ns MR glitch rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6413UK29-T | Same electrical specs but leaded (Pb) packaging instead of lead-free (+T) | Not suitable for RoHS-compliant production; requires Pb-compatible reflow profile | Select only for legacy repair or non-RoHS programs where leaded solder is mandated |
| TPS3808G33DBVR | Fixed 3.3V threshold, 350ms min timeout, 2.5µA ICC - no manual reset input | Lacks MR functionality; longer timeout limits use in fast-recovery systems | Choose when 3.3V threshold suffices and manual reset is unnecessary; verify timeout alignment with μP spec |
Compared with MAX6413UK29+T, the MAX6413UK29-T offers identical performance in leaded packaging but violates modern environmental directives, while the TPS3808G33DBVR trades manual reset and fine-grained timeout adjustability for higher integration and longer default delay - making it less flexible for brownout-sensitive designs requiring sub-10ms reset hold times.
Availability
MAX6413UK29+T is available at Aetrix Electronics and suitable for automotive engine control units, portable medical devices, industrial PLC modules, smart energy meters, and battery-powered embedded controllers requiring stable component supply across extended temperature ranges.
Supply support for MAX6413UK29+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 with emphasis on reliability and low-power operation.
The MAX6412–MAX6420 family delivers ultra-low-power microprocessor supervision with flexible reset thresholds and timeout programming, targeting safety-critical systems where deterministic power-on reset behavior is mandatory.
FAQ
What is the exact reset threshold voltage of the MAX6413UK29+T?
The MAX6413UK29+T has a factory-trimmed VCC reset threshold of 2.925V nominal, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is derived from Table 1 in the datasheet where suffix "29" corresponds to 2.925V typical, and is confirmed in the Electrical Characteristics table under VTH parameter.
Does the MAX6413UK29+T support manual reset functionality?
Yes, the MAX6413UK29+T includes a dedicated MR (manual reset) input on pin 3. It is active-low with internal 20kΩ pullup resistance, allowing direct connection of a momentary switch to ground. Reset remains asserted for the full timeout period after MR is released, and the input provides 75ns glitch rejection to prevent false triggering.
How is the reset timeout period set on the MAX6413UK29+T?
The reset timeout period on the MAX6413UK29+T is set by connecting an external capacitor between pin 4 (SRT) and ground. Using the formula tRP = (2.71 × 10⁶) × CSRT + 275µs, a 1500pF capacitor yields 3.00–5.75ms timeout. The device uses a 240nA current source to charge CSRT to a 0.65V internal reference, ensuring predictable timing across temperature.
What package type and dimensions does the MAX6413UK29+T use?
The MAX6413UK29+T is supplied in a RoHS-compliant lead-free SOT23-5 package (package code U5+2A), measuring 1.6mm × 2.9mm with 1.1mm maximum height. Its land pattern follows JEDEC MO-178AA outline number 21-0057 and Maxim's land pattern number 90-0174, supporting standard reflow profiles up to +260°C.
Is the MAX6413UK29+T suitable for automotive applications?
Yes - while the base MAX6413UK29+T is qualified for -40°C to +125°C operation, automotive-grade versions (e.g., MAX6413UK29/V+T) are AEC-Q100 qualified. The MAX6413UK29+T shares identical electrical specifications and thermal performance, making it suitable for non-certified automotive subsystems such as infotainment power management or body control modules where full qualification is not required.
MAX6413UK29+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:
- 2.925V
- 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
MAX6413UK29+T FAQ
1.How can I place an order for MAX6413UK29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6413UK29+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 MAX6413UK29+T reliable?
The price and inventory of MAX6413UK29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6413UK29+T is usually 5 days.
3.What payment methods are accepted for MAX6413UK29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6413UK29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6413UK29+T?
MAX6413UK29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6413UK29+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 MAX6413UK29+T?
For technical support, including MAX6413UK29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6413UK29+T requirements.
6.How does Aetrix verify that MAX6413UK29+T is sourced from the original manufacturer or authorized distributors?
All MAX6413UK29+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 MAX6413UK29+T meets industry standards.
7.What is the process for return or replacement of MAX6413UK29+T?
All MAX6413UK29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6413UK29+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 MAX6413UK29+T part is unused and in its original packaging.
Return procedure for MAX6413UK29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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