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Analog Devices Inc./Maxim Integrated MAX6413UK22
- Part No.:
- MAX6413UK22
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6413UK22.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,422
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Product details
Overview
MAX6413UK22 from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 2.188V VCC reset threshold, active-high push-pull reset output, manual reset input (MR), and capacitor-adjustable reset timeout. It monitors single-supply systems in automotive, medical, and portable equipment where reliable brownout detection and controlled reset assertion are required.
For engineers reviewing the MAX6413UK22 datasheet, MAX6413UK22 pinout, MAX6413UK22 application, or MAX6413UK22 equivalent, this page delivers verified specifications, SOT23-5 package details, reset timing behavior under voltage transients, quiescent current at 1.7–4.5 µA across supply range, and design guidance for manual reset integration and timeout capacitor selection.
Technical Context
The MAX6413UK22 implements a precision bandgap-based voltage comparator for VCC monitoring with ±2.5% threshold accuracy over –40°C to +125°C, and uses an internal 240nA current source charging an external capacitor on SRT to generate a programmable reset timeout period. Its MR input features a 20kΩ internal pullup and 1µs minimum pulse width support.
Reset assertion occurs when VCC falls below 2.188V (±2.5%), MR is pulled low, or both; deassertion requires VCC > 2.188V *and* MR high *and* SRT capacitor ramping to 0.65V, ensuring clean release after power recovery or manual reset release. The active-high push-pull RESET output guarantees logic-high state down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.188V (nominal), ±2.5% over temperature - sets precise brownout detection point for 2.2V rail monitoring |
| Supply Current | 1.7µA (typ) at VCC ≤ 2.0V - enables multi-year battery life in always-on portable systems |
| Reset Timeout Range | 275µs to 5.75ms (with CSRT = 0F to 1500pF) - supports μP reset hold times from fast boot to complex initialization |
| RESET Output Type | Active-high push-pull - drives μP reset pin directly without external pullup; VOH ≥ 0.8×VCC at ISOURCE = 150µA |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial embedded environments |
| MR Input Logic | Active-low with 20kΩ internal pullup - allows momentary switch-to-ground interface without external components |
| Reset Validity | Guaranteed RESET high for VCC ≥ 1V - ensures deterministic μP startup even during partial power-up |
Pinout & Package
SOT23-5 package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, RoHS-compliant (lead-free +T variant available). Thermal resistance θJA = 140°C/W; rated for 571mW continuous dissipation at +70°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-high push-pull reset output | Drives μP reset pin high during fault; sinks 500µA @ VCC ≥ 1.8V with VOL ≤ 0.3V |
| 2 - GND | Ground reference | Return path for all internal circuitry; must be low-impedance connection to system ground plane |
| 3 - MR | Manual reset input | Active-low control; internal 20kΩ pullup allows NC default; 1µs minimum pulse width immunity |
| 4 - SRT | Set reset timeout input | Connects to external capacitor (CSRT); 240nA precision current source sets tRP = 2.71×10⁶×CSRT + 275µs |
| 5 - VCC | Supply voltage input | Power source and monitored rail; operates from 1.0V to 5.5V; reset valid down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-adjustable reset timeout | Enables precise tailoring of reset hold time (275µs–5.75ms) to match specific μP boot sequence requirements |
| Factory-trimmed 2.188V threshold | Eliminates external resistor divider; achieves ±2.5% accuracy over full automotive temperature range |
| Active-high push-pull RESET | Directly interfaces to μP reset pins requiring high-active assertion; no external pullup needed |
| Manual reset with internal pullup | Reduces BOM count: momentary switch connects MR to GND; no external resistor required |
| Low 1.7µA quiescent current | Extends battery runtime in always-on monitoring applications such as telematics and portable diagnostics |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Glucose Monitor |
|---|---|
Use Scenario: Monitors 2.2V microcontroller supply in engine compartment under wide temperature (-40°C to +125°C) and transient-rich conditions. IC Role / Device Role / Timing Role: Supervises VCC rail and asserts active-high RESET to halt μP execution during brownout; timeout ensures stable clock and memory initialization before restart. Use Value: Prevents corrupted firmware execution during cold cranking or load dump events; AEC-Q100 qualification ensures reliability in safety-critical subsystems. | Use Scenario: Powers on/off sequence control in battery-operated handheld diagnostic device with strict energy budget. IC Role / Device Role / Timing Role: Detects 2.2V LDO output sag during sensor activation; holds μP in reset until regulated rail stabilizes for accurate ADC sampling. Use Value: Enables sub-2µA sleep current; capacitor-programmable timeout aligns with sensor warm-up delay, eliminating software polling overhead. |
| Industrial PLC I/O Module | Smart Energy Meter MCU Supervisor |
Use Scenario: Ensures deterministic startup of ARM Cortex-M4 in DIN-rail mounted controller exposed to 85°C ambient and EFT noise. IC Role / Device Role / Timing Role: Provides VCC supervision and manual reset via front-panel button; push-pull output drives reset pin of isolated μP domain. Use Value: Internal MR pullup eliminates discrete resistor; guaranteed RESET validity down to VCC = 1V prevents metastability during partial power-up of auxiliary rails. | Use Scenario: Monitors main 2.2V supply in revenue-grade meter with tamper-detection logic and secure boot. IC Role / Device Role / Timing Role: Generates 4.375ms reset pulse (CSRT = 1500pF) to satisfy secure bootloader timing window after power restoration. Use Value: Factory-trimmed threshold avoids calibration drift over 15-year field life; low leakage (<10nA) SRT node ensures timeout stability across humidity and aging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6412UK22 | Active-low push-pull RESET output; identical VTH, SRT, MR, and package | Requires inverted reset logic on μP side; unsuitable for high-active reset inputs | Select when target μP accepts active-low reset assertion and board layout cannot accommodate level-shifting. |
| TLV803SDBZR | Fixed 2.2V threshold, active-high open-drain RESET, no MR input, 1.6µA ICC | Lacks manual reset capability; requires external pullup for RESET; smaller 1.5mm × 1.5mm SOT-23-3 package | Choose for space-constrained designs where MR is unnecessary and open-drain flexibility (e.g., wired-OR reset bus) is preferred. |
Compared with MAX6412UK22 and TLV803SDBZR, the MAX6413UK22 uniquely combines active-high push-pull drive, factory-trimmed 2.188V threshold, and integrated manual reset-enabling direct μP interface, precise brownout detection, and field-serviceable reset without added components or PCB area.
Availability
MAX6413UK22 is available at Aetrix Electronics and suitable for automotive engine control units, portable medical devices, industrial PLC modules, and smart energy meters requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6413UK22 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 low power, high reliability, and AEC-Q100 qualification.
The MAX6412–MAX6420 family delivers configurable microprocessor supervision with capacitor-adjustable timeout, targeting systems needing robust power-on reset, brownout protection, and manual recovery in harsh environments.
FAQ
What is the exact VCC reset threshold voltage for MAX6413UK22?
The MAX6413UK22 has a factory-trimmed nominal VCC reset threshold of 2.188V, with ±2.5% tolerance over the full –40°C to +125°C operating temperature range. This value is confirmed in Table 1 (Suffix "22") and Electrical Characteristics section of the datasheet, and applies specifically to the MAX6413UK22 variant-not the broader MAX6413 family.
Does MAX6413UK22 support manual reset functionality?
Yes, the MAX6413UK22 includes a dedicated MR (manual reset) input on Pin 3. It is active-low with an internal 20kΩ pullup resistor, allowing direct connection of a momentary switch to ground. The device asserts RESET for the full timeout period after MR is released, and supports a minimum 1µs pulse width with 75ns glitch rejection.
What is the recommended capacitor value for a 4.375ms reset timeout with MAX6413UK22?
For a 4.375ms reset timeout, use CSRT = 1500pF connected between SRT (Pin 4) and GND. This value is explicitly validated in the Electrical Characteristics table (tRP = 4.375ms typ at CSRT = 1500pF, VCC = 5V), and matches the typical operating condition used throughout the datasheet's timing graphs and calculations.
Can MAX6413UK22 operate reliably at VCC = 1.2V?
Yes, the MAX6413UK22 is fully specified from VCC = 1.0V to 5.5V. At VCC = 1.2V, it maintains guaranteed RESET output validity (active-high), VTH accuracy (±2.5%), and functional supervision-though supply current rises to ~2.0µA (typ) per the ICC vs. VCC curve. This enables use in ultra-low-voltage backup domains.
Is MAX6413UK22 qualified for automotive applications?
The MAX6413UK22 itself is not explicitly marked as /V (AEC-Q100 qualified) in the Ordering Information table; only certain MAX6414 variants (e.g., MAX6414UK29/V+T) carry the /V suffix. However, its –40°C to +125°C rating, BiCMOS process, and transient immunity make it suitable for non-safety-critical automotive subsystems-consult Maxim's automotive qualification matrix for formal /V part numbers.
MAX6413UK22 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:
- 2.188V
- 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
MAX6413UK22 FAQ
1.How can I place an order for MAX6413UK22 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6413UK22 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 MAX6413UK22 reliable?
The price and inventory of MAX6413UK22 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6413UK22 is usually 5 days.
3.What payment methods are accepted for MAX6413UK22?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6413UK22 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6413UK22?
MAX6413UK22 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6413UK22 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 MAX6413UK22?
For technical support, including MAX6413UK22 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6413UK22 requirements.
6.How does Aetrix verify that MAX6413UK22 is sourced from the original manufacturer or authorized distributors?
All MAX6413UK22 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 MAX6413UK22 meets industry standards.
7.What is the process for return or replacement of MAX6413UK22?
All MAX6413UK22 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6413UK22, 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 MAX6413UK22 part is unused and in its original packaging.
Return procedure for MAX6413UK22:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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