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Analog Devices Inc./Maxim Integrated MAX6414UK16+T
- Part No.:
- MAX6414UK16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6414UK16+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:7,175
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Product details
Overview
The MAX6414UK16+T from Maxim Integrated is a low-power microprocessor supervisor IC with fixed 1.575V VCC reset threshold, manual reset input (MR), and active-low open-drain RESET output. It monitors supply voltage from 1.6V to 5V, asserts reset during brownout or manual trigger, and sustains reset for a capacitor-adjustable timeout period (275µs to >5ms). It operates across –40°C to +125°C and is used in automotive ECUs and battery-powered controllers requiring reliable power-on reset.
For engineers reviewing the MAX6414UK16+T datasheet, MAX6414UK16+T pinout, MAX6414UK16+T application, or MAX6414UK16+T equivalent, key selection criteria include its 1.575V fixed threshold accuracy (±2.5% over temperature), 1.7µA typical quiescent current at 2V, open-drain output compatibility with mixed-voltage µP interfaces, and SOT23-5 package suitability for space-constrained embedded designs.
Technical Context
The MAX6414UK16+T implements a precision bandgap-based voltage comparator for VCC monitoring and a high-impedance manual reset input with internal 20kΩ pullup. Its reset timeout is generated by a 240nA current source charging an external capacitor on the SRT pin, with deassertion triggered when the ramp reaches 0.65V.
As an active-low open-drain supervisor, it requires an external pullup resistor for logic-level translation-enabling interface with µPs operating at voltages up to 5.5V independent of VCC. It guarantees valid RESET output down to VCC = 1V and provides power-supply transient immunity with <50µs glitch rejection for 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.575V ±2.5% over –40°C to +125°C - ensures reliable brownout detection for 1.6V–1.8V logic rails |
| Quiescent Current | 1.7µA typ at VCC ≤ 2.0V - enables multi-year operation in coin-cell–powered systems |
| Reset Timeout Range | 275µs to >5ms via 0–1500pF SRT capacitor - supports µP initialization timing from fast boot to complex firmware load |
| RESET Output Type | Active-low open-drain - allows level-shifting to 3.3V/5V µP reset inputs without additional logic |
| Operating Temp Range | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| MR Input Threshold | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC - compatible with standard CMOS logic driving manual reset |
| Supply Voltage Range | 1.0V to 5.5V - supports operation during deep brownout and wide-input DC-DC outputs |
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-low open-drain output | Drives µP reset input low; requires external pullup to target logic rail (e.g., 3.3V); sinks 500µA min at VCC ≥ 1.8V |
| 2 - GND | Ground reference | Primary return path for internal comparators and current source; must be low-impedance for accurate SRT timing |
| 3 - MR | Manual reset input | Logic-low assertion forces reset; internal 20kΩ pullup allows NC use; 1µs minimum pulse width required |
| 4 - SRT | Set reset timeout input | Connects to external timing capacitor; 240nA constant current charges CSRT to 0.65V to end timeout |
| 5 - VCC | Supply and monitored voltage input | Powers device and feeds fixed-threshold comparator; valid reset asserted down to VCC = 1V |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 1.575V VCC threshold | Laser-trimmed accuracy ±2.5% over full temperature range eliminates external resistor network for single-rail monitoring |
| Capacitor-adjustable timeout | 275µs base delay plus linear scaling (2.71s/F) enables precise µP reset hold time tuning without firmware changes |
| Open-drain RESET output | Supports mixed-voltage system interfacing - e.g., 1.8V supervisor driving 3.3V µP reset with 10kΩ pullup to 3.3V rail |
| Low 1.7µA quiescent current | Enables always-on supervision in energy-harvesting and battery-backed applications without measurable runtime impact |
| –40°C to +125°C operation | Fully specified performance across AEC-Q100 Grade 0 automotive temperature range without derating |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 1.8V microcontroller supply in engine management module exposed to under-hood thermal cycling and load-dump transients. IC Role / Device Role / Timing Role: Provides power-on reset and brownout protection; asserts RESET until VCC stabilizes above 1.575V and holds for 4.375ms (CSRT = 1500pF) to ensure µP clock lock and register initialization. Use Value: Prevents erratic ECU behavior during cold cranking (VCC dip to 1.6V) and meets ISO 7637-2 pulse immunity requirements via 75ns MR glitch rejection. | Use Scenario: Supervises 1.6V SoC in handheld glucose meter powered by CR2032 coin cell with multi-year shelf life requirement. IC Role / Device Role / Timing Role: Detects battery depletion below 1.6V and triggers controlled shutdown; uses open-drain RESET to interface with 3.3V display controller reset line. Use Value: 1.7µA typical ICC extends battery life beyond 5 years; guaranteed RESET validity down to VCC = 1V prevents undefined state during final discharge phase. |
| Industrial PLC I/O Module | Smart Energy Meter MCU |
Use Scenario: Ensures deterministic startup of ARM Cortex-M4 in DIN-rail mounted programmable logic controller operating at 85°C ambient. IC Role / Device Role / Timing Role: Monitors 3.3V FPGA configuration rail and asserts active-low RESET to both FPGA and µP; timeout set to 5.75ms for full bitstream loading. Use Value: ±2.5% threshold stability over –40°C to +125°C avoids false resets during thermal stress; SOT23-5 footprint minimizes PCB area in dense I/O stack. | Use Scenario: Supervises dual-rail power (1.8V µP core, 3.3V metrology ADC) in ANSI C12.20-certified electricity meter with tamper detection. IC Role / Device Role / Timing Role: Uses MR pin for hardware-initiated meter reset during firmware update; open-drain output pulled to 3.3V rail coordinates reset across both voltage domains. Use Value: Manual reset pulse width tolerance (1µs min) enables robust debounce-free implementation with simple pushbutton; 125°C rating supports sealed transformer-coupled enclosure design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6414UK22+T | Fixed 2.188V VCC threshold (vs. 1.575V); identical pinout, timing, and features | Designed for 2.5V/3.3V system rails instead of 1.6V–1.8V logic; same automotive temp grade | Select when supervising higher-voltage supplies; no layout change required but threshold mismatch invalidates direct substitution |
| TPS3808G15DBVR | 1.5V fixed threshold, 1.6µA IQ, push-pull active-low RESET, SOT23-5 - lacks MR input and capacitor-adjustable timeout | Fixed 200ms timeout; suited for simpler systems where adjustable delay is unnecessary | Choose for cost-sensitive, non-manual-reset applications needing identical threshold and ultra-low IQ; requires redesign for timeout flexibility or MR functionality |
Compared with MAX6414UK22+T, the MAX6414UK16+T provides tighter alignment with 1.6V–1.8V supply rails and brownout margins; versus TPS3808G15DBVR, it adds manual reset capability and field-tunable timeout-critical for firmware validation and multi-stage boot sequences.
Availability
MAX6414UK16+T is available at Aetrix Electronics and suitable for automotive ECUs, portable medical devices, and industrial PLC modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6414UK16+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 computing applications.
The MAX6412–MAX6420 family delivers configurable µP supervision with capacitor-adjustable reset timeout, targeting applications requiring high accuracy, ultra-low power, and AEC-Q100 qualification in compact SOT23 packages.
FAQ
What is the exact reset threshold voltage of the MAX6414UK16+T?
The MAX6414UK16+T has a factory-trimmed VCC reset threshold of 1.575V, with guaranteed tolerance of ±1.25% at +25°C and ±2.5% over the full –40°C to +125°C operating range. This value corresponds to the "16" suffix in the part number per Maxim's Reset Voltages Suffix Table, and is laser-trimmed for precision without external components.
Does the MAX6414UK16+T support manual reset functionality?
Yes, the MAX6414UK16+T includes a dedicated MR (manual reset) input on Pin 3. Asserting MR low forces an immediate reset, which remains active for the full capacitor-programmed timeout period after MR is released. The pin features an internal 20kΩ pullup resistor, allowing it to be left unconnected if manual reset is not required.
What type of reset output does the MAX6414UK16+T provide, and how is it used?
The MAX6414UK16+T provides an active-low open-drain RESET output on Pin 1. This requires an external pullup resistor to the target logic rail (e.g., 3.3V or 5V), enabling level translation between the supervisor's VCC domain and the µP's reset input voltage. It can sink up to 500µA while maintaining VOL ≤ 0.3V.
How is the reset timeout period set on the MAX6414UK16+T?
The reset timeout period on the MAX6414UK16+T is set by connecting an external capacitor (CSRT) between Pin 4 (SRT) and ground. The timeout follows tRP = (2.71 × 10⁶) × CSRT + 275µs, where tRP is in seconds and CSRT in farads. For example, a 1500pF capacitor yields 4.375ms typical timeout at +25°C.
Is the MAX6414UK16+T qualified for automotive applications?
The MAX6414UK16+T is fully specified from –40°C to +125°C and built on Maxim's BiCMOS process, meeting AEC-Q100 stress test requirements. While the base part number does not carry the "/V" automotive qualification suffix, its temperature range, reliability data, and packaging align with automotive-grade performance; for certified automotive use, the MAX6414UK16/V+T variant should be selected.
MAX6414UK16+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:
- 1.575V
- Output:
- Open Drain or Open Collector
- 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
MAX6414UK16+T FAQ
1.How can I place an order for MAX6414UK16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6414UK16+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 MAX6414UK16+T reliable?
The price and inventory of MAX6414UK16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6414UK16+T is usually 5 days.
3.What payment methods are accepted for MAX6414UK16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6414UK16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6414UK16+T?
MAX6414UK16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6414UK16+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 MAX6414UK16+T?
For technical support, including MAX6414UK16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6414UK16+T requirements.
6.How does Aetrix verify that MAX6414UK16+T is sourced from the original manufacturer or authorized distributors?
All MAX6414UK16+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 MAX6414UK16+T meets industry standards.
7.What is the process for return or replacement of MAX6414UK16+T?
All MAX6414UK16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6414UK16+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 MAX6414UK16+T part is unused and in its original packaging.
Return procedure for MAX6414UK16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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