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Analog Devices Inc./Maxim Integrated MAX6316LUK26DY-T
- Part No.:
- MAX6316LUK26DY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK26DY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,170
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Product details
Overview
MAX6316LUK26DY-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, 2.63V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply and provides manual reset and watchdog functionality for embedded control systems requiring reliable power-on/brownout detection.
For engineers reviewing the MAX6316LUK26DY-T datasheet, MAX6316LUK26DY-T pinout, MAX6316LUK26DY-T application, or MAX6316LUK26DY-T equivalent, this device delivers guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and integrated configuration for portable/battery-powered equipment, intelligent instruments, and industrial controllers.
Technical Context
The MAX6316LUK26DY-T implements a precision voltage monitor with laser-trimmed internal resistor divider setting VRST = 2.63V (±2.5% over -40°C to +125°C), coupled with a digital reset timer generating 140ms minimum assertion time after VCC rise. Its watchdog circuit clears on any WDI edge and times out after 1.6s if unserviced.
This variant belongs to the MAX6316L series: it features active-low push/pull RESET output (not bidirectional or open-drain), includes MR input with 52kΩ internal pullup and 100ns glitch rejection, and supports watchdog functionality via WDI pin - all operating across -40°C to +125°C with AEC-Q100 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 2.63V ±2.5% (factory-trimmed; ensures precise brownout detection at nominal 2.63V) |
| Reset Timeout Period | 140ms minimum (guarantees sufficient processor initialization time after power stabilization) |
| Watchdog Timeout | 1.6s typical (enables robust software hang detection in real-time embedded firmware) |
| Supply Current | 5µA typical at 3.6V (ultra-low quiescent current extends battery life in portable systems) |
| Operating Temperature | -40°C to +125°C (supports automotive-grade and industrial harsh-environment deployment) |
| Reset Output Type | Active-Low Push/Pull (drives RESET low actively and high actively; no external pullup required) |
| VCC Range | 1.0V to 5.5V (ensures valid reset assertion even during deep brownout conditions) |
Pinout & Package
MAX6316LUK26DY-T is housed in a 5-pin SOT23 package (package code U5+2A, outline 21-0057), measuring 2.9mm × 1.6mm × 1.1mm, RoHS-compliant and qualified per AEC-Q100.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output; sinks ≥1.2mA at VCC ≥2.7V, sources ≥500µA at VCC ≥2.7V |
| 2 | GND | Ground reference for all internal circuitry and reset timing accuracy |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (52kΩ); 100ns glitch rejection |
| 4 | WDI | Watchdog input; edge-triggered (rising/falling); resets internal timer on transition; disables watchdog when left floating |
| 5 | VCC | Supply input; reset asserted when VCC falls below 2.63V; operates down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, reset timer, watchdog logic, and MR pullup eliminate BOM cost and board space |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic system behavior during deep undervoltage events without external level-shifting |
| Immunity to short negative VCC transients | Rejects ≤4µs, 100mV-under-VTH glitches - prevents spurious resets in noisy power environments |
| AEC-Q100 qualified | Validated for automotive applications including engine control, body electronics, and ADAS subsystems |
| Factory-trimmed precision threshold | 2.63V ±2.5% over full temperature range enables accurate power-rail monitoring without calibration |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
Use Scenario: Handheld test meters and portable data loggers powered by single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Monitors VCC during battery discharge and cold-start; asserts reset if voltage drops below 2.63V and holds for 140ms. Use Value: Prevents corrupted memory writes and erratic MCU operation during low-battery brownout, extending usable runtime. |
Use Scenario: Digital multimeters and environmental sensors deployed in field service or lab settings. IC Role / Device Role / Timing Role: Provides power-on reset and watchdog supervision for ARM Cortex-M based measurement engines. Use Value: Guarantees clean boot sequence and recovers from firmware hangs without user intervention. |
| Embedded Control Systems | Industrial Controllers |
Use Scenario: Motor drive interface modules and PLC I/O expanders operating in factory automation environments. IC Role / Device Role / Timing Role: Supervises 3.3V logic supply and interfaces with watchdog-enabled microcontrollers via WDI. Use Value: Enables fail-safe shutdown and automatic recovery during EMI-induced MCU lockups. |
Use Scenario: DIN-rail mounted programmable logic controllers managing HVAC or conveyor systems. IC Role / Device Role / Timing Role: Delivers robust reset signaling across -40°C to +125°C ambient with 2.63V threshold matching 2.7V LDO outputs. Use Value: Eliminates need for external RC networks while meeting IEC 61000-4-4 surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316MUK26DY-T | Bidirectional active-low RESET output (not push/pull); includes 4.7kΩ internal pullup + active P-FET | Required for Motorola 68HC11 or other µPs with bidirectional reset pins; incompatible with standard push/pull-only reset inputs | Select only if interfacing with bidirectional-reset microcontrollers; not drop-in compatible with MAX6316LUK26DY-T |
| MAX6320PUK26DY-T | Open-drain active-low RESET output; requires external pullup resistor; no MR input | Suitable for multi-supply systems where RESET must be pulled to a voltage higher than VCC (e.g., 5V RESET line with 3.3V VCC) | Choose when level-shifting or shared reset bus architecture is needed; lacks manual reset capability |
Compared with MAX6316LUK26DY-T, MAX6316MUK26DY-T supports bidirectional µP reset protocols but requires different PCB routing, while MAX6320PUK26DY-T enables flexible voltage-domain isolation at the cost of added external components and loss of MR functionality.
Availability
MAX6316LUK26DY-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, and embedded control systems requiring stable component supply, long-term lifecycle support, and AEC-Q100-qualified reliability.
Supply support for MAX6316LUK26DY-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 industrial, automotive, and computing applications, emphasizing high reliability and low-power operation.
The MAX6316–MAX6322 family was engineered specifically for microprocessor supervision in space-constrained, mission-critical systems - delivering factory-trimmed voltage thresholds, configurable timeouts, and robust noise immunity in miniature SOT23 packages.
FAQ
What is the exact reset threshold voltage of MAX6316LUK26DY-T?
The MAX6316LUK26DY-T has a factory-trimmed reset threshold of 2.63V, specified as 2.591V (min) to 2.669V (max) at +25°C, and 2.564V (min) to 2.696V (max) over the full -40°C to +125°C operating range. This value is laser-trimmed during manufacturing and does not require external calibration.
Does MAX6316LUK26DY-T include a manual reset input?
Yes, MAX6316LUK26DY-T includes an active-low manual reset (MR) input with internal 52kΩ pullup to VCC. A logic-low pulse ≥1.5µs on MR forces reset assertion for the full 140ms timeout period, and the pin rejects transients ≤100ns - enabling direct connection to momentary switches without debouncing circuitry.
What watchdog timeout period is configured in MAX6316LUK26DY-T?
MAX6316LUK26DY-T is configured with a typical watchdog timeout of 1.6s (corresponding to suffix "Y" per Table 3). The actual timeout is 1.12s (min) to 2.4s (max) over temperature, and the internal timer clears on any rising or falling edge at the WDI pin.
Is MAX6316LUK26DY-T compatible with 1.8V microcontrollers?
Yes, MAX6316LUK26DY-T operates from VCC = 1.0V to 5.5V and guarantees valid reset output down to VCC = 1V. Its RESET output drives low to ≤0.3V (at ISINK = 1.2mA) and high to ≥0.8×VCC (at ISOURCE = 500µA), making it interoperable with 1.8V logic families when VCC ≥ 1.8V.
What package type and marking code does MAX6316LUK26DY-T use?
MAX6316LUK26DY-T uses the 5-pin SOT23 package (outline 21-0057, package code U5+2A) with top-side marking "DY". The "Y" denotes the 1.6s watchdog timeout, "26" indicates the 2.63V reset threshold, and "LUK" identifies the MAX6316L push/pull active-low variant in tape-and-reel packaging.
MAX6316LUK26DY-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316LUK26DY-T FAQ
1.How can I place an order for MAX6316LUK26DY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK26DY-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 MAX6316LUK26DY-T reliable?
The price and inventory of MAX6316LUK26DY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK26DY-T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK26DY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK26DY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK26DY-T?
MAX6316LUK26DY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK26DY-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 MAX6316LUK26DY-T?
For technical support, including MAX6316LUK26DY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK26DY-T requirements.
6.How does Aetrix verify that MAX6316LUK26DY-T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK26DY-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 MAX6316LUK26DY-T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK26DY-T?
All MAX6316LUK26DY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK26DY-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 MAX6316LUK26DY-T part is unused and in its original packaging.
Return procedure for MAX6316LUK26DY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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