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Analog Devices Inc./Maxim Integrated MAX6415UK+T
- Part No.:
- MAX6415UK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6415UK+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,317
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Product details
Overview
MAX6415UK+T from Maxim Integrated is a low-power microprocessor supervisor IC with adjustable reset threshold, capacitor-programmable timeout, and active-low push-pull reset output. It monitors external voltages down to 1.26V using an external resistor divider, draws only 1.7µA typical supply current, operates from -40°C to +125°C, and is housed in a SOT23-5 package. It is used in battery-powered controllers requiring precise brownout detection and reliable power-on reset.
For engineers reviewing the MAX6415UK+T datasheet, MAX6415UK+T pinout, MAX6415UK+T application, or MAX6415UK+T equivalent, this page provides verified functional identity, confirmed pin roles, exact reset threshold behavior (1.26V adjustable input), guaranteed VCC ≥1V reset validity, and real-world dual-supply design context for embedded and automotive systems.
Technical Context
The MAX6415UK+T implements a high-impedance adjustable reset comparator referenced to a 1.26V internal threshold, enabling external voltage monitoring via resistor-divider networks. Its reset timeout is set by a 240nA current source charging an external capacitor (SRT pin) to a 0.65V ramp threshold - yielding programmable delays from 275µs to >5ms.
Unlike fixed-threshold variants, it omits manual reset (MR) and factory-trimmed VCC threshold, instead dedicating RESET IN as the sole adjustable monitoring input. Its active-low push-pull RESET output guarantees logic validity down to VCC = 1V and supports direct interface to µP reset inputs without pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Input Threshold | 1.26V nominal; sets minimum detectable voltage on RESET IN pin via external resistor divider |
| Supply Current | 1.7µA typical at VCC ≤ 2.0V; enables multi-year operation in coin-cell–powered systems |
| Operating Temp Range | -40°C to +125°C; qualified for under-hood automotive and industrial control environments |
| Reset Timeout Range | 275µs to 5.75ms (with CSRT = 0F to 1500pF); accommodates diverse µP reset timing requirements |
| RESET Output Type | Active-low push-pull; drives µP reset pin directly without external pull-up, sinking 50µA at 0.3V max VOL |
| VCC Validity Limit | Guaranteed RESET validity down to VCC = 1V; prevents undefined logic states during deep brownout |
| Package | SOT23-5; 2.9mm × 1.6mm footprint compatible with high-density PCB layouts |
Pinout & Package
SOT23-5 package with 1.27mm pitch, RoHS-compliant lead-free finish (+T suffix), thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low push-pull reset output | Drives µP reset pin low during fault; returns high after timeout; no external pull-up required |
| 2 - GND | Ground reference | Return path for all internal circuitry and SRT capacitor discharge |
| 3 - RESET IN | Adjustable reset comparator input | High-impedance node (10nA leakage) for external resistor-divider; threshold = 1.26V × (R1+R2)/R2 |
| 4 - SRT | Reset timeout capacitor connection | 240nA constant-current source charges external capacitor; timeout = (2.71×10⁶)×CSRT + 275µs |
| 5 - VCC | Supply voltage input | Power source (1.0V–5.5V); also monitored for VCC reset if enabled (not applicable to MAX6415) |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Reset Threshold | Monitors any voltage ≥1.26V using two high-value resistors (e.g., 1MΩ/10MΩ), minimizing standby current draw |
| Capacitor-Programmable Timeout | Enables precise reset hold time tuning across temperature (±15% variation over -40°C to +125°C) |
| Low Quiescent Current | 1.7µA typical at 2.0V ensures <1µA system-level contribution in always-on monitoring circuits |
| Guaranteed Reset Validity | RESET output remains logic-valid (low/high) down to VCC = 1V, eliminating need for external level-shifting |
| AEC-Q100 Qualified Option | Available as /V variant (e.g., MAX6415UK/V+T); validated for automotive electronics per stress test requirements |
Applications
| Automotive Body Control Module | Portable Medical Sensor Node |
|---|---|
Use Scenario: Monitors 3.3V MCU supply and 1.8V sensor rail in a battery-powered telematics unit exposed to engine-bay temperatures. IC Role / Device Role / Timing Role: Dual-voltage supervisor detecting brownout on either rail and asserting reset for ≥4ms to ensure full MCU initialization. Use Value: Prevents firmware lockup during cold-cranking transients; 1.7µA quiescent current extends battery life beyond 5 years in sleep mode. | Use Scenario: Powers a wearable ECG patch with coin-cell battery and ultra-low-power ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Adjustable-reset supervisor monitoring regulated 1.2V core voltage; asserts reset if voltage drops below 1.15V for >300µs. Use Value: Enables safe shutdown before memory corruption; 1.26V threshold allows margin for aging battery discharge curve. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Supervises isolated 5V fieldbus power and 3.3V logic supply in a DIN-rail mounted controller operating at 85°C ambient. IC Role / Device Role / Timing Role: Single-point reset generator triggered by either supply sag; uses 1nF SRT capacitor for 3.5ms timeout. Use Value: Ensures deterministic recovery after line surges; -40°C to +125°C rating eliminates derating concerns in uncooled enclosures. | Use Scenario: Detects undervoltage on 2.5V RTC backup supply and 3.3V metering SoC rail in a utility-grade electricity meter. IC Role / Device Role / Timing Role: Resets metering processor when backup supply falls below 2.4V, preventing incorrect kWh accumulation during outage. Use Value: Meets IEC 62053-21 accuracy requirements by guaranteeing reset assertion before voltage crosses critical data-retention threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6416UK+T | Active-high push-pull RESET output; identical threshold, timeout, and pinout | Requires µP with active-high reset input; incompatible with standard active-low reset designs | Select when host µP mandates high-asserted reset signal and layout cannot accommodate inversion |
| TLV809E29DBVR | Fixed 2.93V reset threshold; no adjustable input or capacitor-programmable timeout; SOT23-3 package | Limited to single-supply monitoring; lacks flexibility for custom thresholds or timing | Choose for cost-sensitive, single-rail applications where 2.93V threshold matches system requirement |
Compared with MAX6415UK+T, MAX6416UK+T offers identical supervision capability but inverted reset polarity, while TLV809E29DBVR trades adjustability and timeout flexibility for lower cost and smaller footprint in fixed-threshold use cases.
Availability
MAX6415UK+T is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensor nodes, industrial PLC I/O modules, smart energy meters, and battery-powered embedded controllers requiring stable component supply across extended temperature ranges.
Supply support for MAX6415UK+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 configurable µP supervision with adjustable thresholds and programmable timeouts, targeting systems needing robust power-monitoring in space-constrained, low-power, and high-reliability environments.
FAQ
What is the exact reset threshold voltage of the MAX6415UK+T?
The MAX6415UK+T does not have a fixed reset threshold. Its RESET IN pin compares the applied voltage against an internal 1.26V reference. The effective threshold is set externally using a resistor divider: VMON_TH = 1.26V × (R1 + R2)/R2. For example, with R1 = 1.24MΩ and R2 = 1MΩ, the threshold becomes 2.80V. This adjustable architecture allows precise matching to any system rail.
How do I calculate the reset timeout capacitor value for the MAX6415UK+T?
To achieve a desired reset timeout tRP (in seconds), use the formula CSRT = (tRP − 275µs) / 2.71×10⁶, where CSRT is in farads. For a 4ms timeout: CSRT = (0.004 − 0.000275) / 2,710,000 ≈ 1375pF. Use a low-leakage ceramic capacitor (≤10nA) placed close to the SRT pin, as stray capacitance or leakage will directly impact timing accuracy.
Does the MAX6415UK+T monitor its own VCC supply?
No, the MAX6415UK+T does not include a factory-trimmed VCC reset threshold. Unlike MAX6412/MAX6418 variants, it is designed exclusively for monitoring external voltages via the RESET IN pin. VCC serves only as the power supply; reset assertion depends solely on the voltage at RESET IN falling below the programmed threshold.
Can the MAX6415UK+T be used in automotive applications?
Yes - the MAX6415UK+T is rated for -40°C to +125°C operation and is available in AEC-Q100 qualified versions (e.g., MAX6415UK/V+T). While the base MAX6415UK+T meets temperature and reliability requirements for many automotive subsystems, official AEC-Q100 certification requires the /V suffix and corresponding qualification documentation from Analog Devices.
What is the maximum leakage current specification for the RESET IN pin of the MAX6415UK+T?
The RESET IN pin leakage current for the MAX6415UK+T is specified as 10nA maximum across the full operating temperature range (-40°C to +125°C). This ultra-low leakage enables use of high-value resistor dividers (e.g., 10MΩ total) without introducing significant threshold error, preserving accuracy while minimizing current draw in battery-powered systems.
MAX6415UK+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:
- Adjustable/Selectable
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6415UK+T FAQ
1.How can I place an order for MAX6415UK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6415UK+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 MAX6415UK+T reliable?
The price and inventory of MAX6415UK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6415UK+T is usually 5 days.
3.What payment methods are accepted for MAX6415UK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6415UK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6415UK+T?
MAX6415UK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6415UK+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 MAX6415UK+T?
For technical support, including MAX6415UK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6415UK+T requirements.
6.How does Aetrix verify that MAX6415UK+T is sourced from the original manufacturer or authorized distributors?
All MAX6415UK+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 MAX6415UK+T meets industry standards.
7.What is the process for return or replacement of MAX6415UK+T?
All MAX6415UK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6415UK+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 MAX6415UK+T part is unused and in its original packaging.
Return procedure for MAX6415UK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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