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Analog Devices Inc./Maxim Integrated MAX6316LUK29BY/V+T
- Part No.:
- MAX6316LUK29BY/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK29BY/V+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,721
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Product details
Overview
MAX6316LUK29BY/V+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, 2.93V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply integrity and provides manual reset and watchdog functionality for embedded microcontroller systems requiring reliable power-on/brownout reset assertion.
For engineers reviewing the MAX6316LUK29BY/V+T datasheet, MAX6316LUK29BY/V+T pinout, MAX6316LUK29BY/V+T application, or MAX6316LUK29BY/V+T equivalent, key selection criteria include its AEC-Q100 automotive qualification, guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and integrated configuration eliminating external components in space-constrained designs.
Technical Context
The MAX6316LUK29BY/V+T implements a precision voltage monitor with laser-trimmed internal resistor divider setting VRST = 2.93V (±2.5% over -40°C to +125°C), coupled with a digital reset timer generating a fixed 140ms active-low reset pulse after VCC rises above threshold. Its watchdog circuit clears on any WDI edge and times out after 1.6s if unserviced.
This variant belongs to the MAX6316L series, featuring active-low push/pull RESET output (sinks and sources current), manual reset input (MR) with 52kΩ internal pullup, and watchdog input (WDI) compatible with TTL/CMOS logic levels. It lacks bidirectional or open-drain reset configurations - confirmed by Selector Guide and Pin Description tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±2.5% over -40°C to +125°C - sets precise brownout detection point for 3V systems |
| Reset Timeout Period | 140ms minimum - ensures sufficient hold time for microprocessor initialization after power-up |
| Watchdog Timeout | 1.6s typical - provides robust software execution monitoring without excessive system interruption |
| Supply Current | 5µA typical at VCC = 3.6V - enables ultra-low-power operation in battery-backed applications |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions |
| Reset Output Type | Active-Low Push/Pull - drives RESET low and high actively, eliminating need for external pullup resistor |
| AEC-Q100 Qualification | Qualified for automotive applications - meets stress testing requirements for temperature, humidity, and vibration |
Pinout & Package
MAX6316LUK29BY/V+T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5+2A, outline 21-0057), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts and reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push/pull CMOS output asserting logic low during reset; sinks ≥1.2mA at VCC ≥2.7V, sources ≥500µA |
| 2 | GND | Ground reference for all internal circuitry and reset timing accuracy |
| 3 | MR (manual reset) | Active-low input with 52kΩ internal pullup; asserts reset when pulled below 0.3×VCC (VTH < 4.0V) |
| 4 | WDI (watchdog input) | Edge-triggered input clearing watchdog timer on rising/falling transitions; accepts 50ns pulses |
| 5 | VCC | Power supply input monitored for reset generation; operates from 1.0V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% tolerance over full automotive temperature range (-40°C to +125°C) |
| No external components required | Integrated MR pullup, precision voltage reference, and reset timer eliminate discrete BOM items |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during severe brownout, critical for automotive safety-critical systems |
| Immunity to short negative VCC transients | Rejects ≤4µs, 100mV-under-threshold glitches - prevents spurious resets in noisy vehicle electrical environments |
| AEC-Q100 qualified | Validated for automotive use including temperature cycling, HAST, and mechanical shock testing |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 3.3V supply rail powering MCU and CAN transceiver in under-hood BCM unit exposed to wide temperature swings and load-dump transients. IC Role / Device Role / Timing Role: Primary power supervisor asserting active-low reset to ARM Cortex-M4 core during cold crank (VCC dip to 2.8V) and hot restart. Use Value: 2.93V threshold precisely matches 3.3V rail margin; 140ms timeout exceeds MCU boot ROM requirement; AEC-Q100 ensures field reliability. |
Use Scenario: Provides fail-safe reset to dual-core RISC-V controller in DIN-rail mounted PLC module operating continuously at 85°C ambient. IC Role / Device Role / Timing Role: Supervises main 5V supply and feeds watchdog input from firmware heartbeat signal to detect lockup. Use Value: 1.6s watchdog period allows complex diagnostic routines before forced recovery; 5µA quiescent current minimizes thermal load. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Subsystem |
|
Use Scenario: Ensures deterministic startup of safety-critical ARM-based pump controller after battery swap or AC power restoration. IC Role / Device Role / Timing Role: Generates clean, glitch-free reset pulse synchronized to VCC ramp; manual reset supports service mode entry. Use Value: Push/pull output eliminates external pullup, reducing component count in Class II medical design; VCC = 1V operation covers full battery discharge curve. |
Use Scenario: Supervises isolated 3.3V rail powering metrology SoC and secure element in ANSI C12.22-compliant meter. IC Role / Device Role / Timing Role: Detects brownout during grid voltage sag and triggers controlled shutdown sequence via MR input. Use Value: 100ns MR glitch rejection prevents false resets from EMI; 2.93V threshold avoids nuisance trips during nominal 3.3V ±5% regulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK29DZ/V+T | Same 2.93V threshold and 140ms reset timeout, but 25.6s watchdog period instead of 1.6s | Suitable for systems requiring longer watchdog intervals (e.g., slow-sampling sensor nodes) | Select when extended watchdog window is needed; otherwise MAX6316LUK29BY/V+T offers better responsiveness |
| TLV803EB29DBVR | 2.93V threshold, 140ms timeout, no watchdog or manual reset; SOT23-3 package (no WDI/MR pins) | Applicable only where basic voltage monitoring suffices without supervision features | Choose only for cost-sensitive, feature-reduced designs; lacks critical watchdog/MR capability of MAX6316LUK29BY/V+T |
Compared with MAX6316LUK29DZ/V+T and TLV803EB29DBVR, the MAX6316LUK29BY/V+T uniquely balances precise 2.93V detection, 140ms reset hold, and 1.6s watchdog response - making it optimal for automotive and industrial controllers requiring timely fault recovery without over-engineering.
Availability
MAX6316LUK29BY/V+T is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O modules, medical infusion pump controllers, and smart energy meter MCU subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6316LUK29BY/V+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 applications in automotive, industrial, and medical markets, emphasizing reliability, low power, and integration.
The MAX6316–MAX6322 family was engineered specifically for microprocessor supervision in harsh environments, delivering AEC-Q100-qualified voltage monitoring, watchdog, and manual reset functions in miniature SOT23 packages.
FAQ
What is the exact reset threshold voltage of the MAX6316LUK29BY/V+T and how stable is it over temperature?
The MAX6316LUK29BY/V+T has a factory-trimmed nominal reset threshold of 2.93V, specified as ±2.5% over the full automotive temperature range of -40°C to +125°C. Its reset threshold temperature coefficient is 40ppm/°C, ensuring minimal drift across operating conditions. This stability is achieved through laser-trimmed internal resistors and is validated per AEC-Q100 requirements.
Does the MAX6316LUK29BY/V+T require external components to function as a complete supervisory circuit?
No, the MAX6316LUK29BY/V+T requires no external components for basic operation. It integrates an internal 52kΩ pullup resistor on the MR pin, precision voltage reference, reset timer, and watchdog circuitry. The active-low push/pull RESET output eliminates the need for an external pullup resistor, simplifying layout and reducing BOM count.
How does the watchdog functionality of the MAX6316LUK29BY/V+T operate, and what is its timeout period?
The MAX6316LUK29BY/V+T watchdog timer clears on any rising or falling edge at the WDI pin and times out after 1.6s (typical) if unserviced. It remains cleared while RESET is asserted and restarts counting upon reset deassertion. The 1.6s timeout is factory-programmed and optimized for responsive fault recovery in real-time embedded systems.
Is the MAX6316LUK29BY/V+T qualified for automotive applications, and what does the "/V" suffix indicate?
Yes, the "/V" suffix in MAX6316LUK29BY/V+T explicitly denotes AEC-Q100 qualification for automotive use. This includes rigorous testing for temperature cycling, humidity, mechanical shock, and electrical stress. The device is rated for operation from -40°C to +125°C and meets automotive reliability and failure-rate requirements.
What is the supply current consumption of the MAX6316LUK29BY/V+T at typical operating conditions?
The MAX6316LUK29BY/V+T draws only 5µA typical supply current at VCC = 3.6V and TA = +25°C, rising to 12µA maximum. At VCC = 5.5V, typical current is 10µA. This ultra-low quiescent current enables use in always-on battery-powered systems such as automotive telematics and portable medical devices.
MAX6316LUK29BY/V+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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316LUK29BY/V+T FAQ
1.How can I place an order for MAX6316LUK29BY/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK29BY/V+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 MAX6316LUK29BY/V+T reliable?
The price and inventory of MAX6316LUK29BY/V+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK29BY/V+T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK29BY/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK29BY/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK29BY/V+T?
MAX6316LUK29BY/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK29BY/V+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 MAX6316LUK29BY/V+T?
For technical support, including MAX6316LUK29BY/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK29BY/V+T requirements.
6.How does Aetrix verify that MAX6316LUK29BY/V+T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK29BY/V+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 MAX6316LUK29BY/V+T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK29BY/V+T?
All MAX6316LUK29BY/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK29BY/V+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 MAX6316LUK29BY/V+T part is unused and in its original packaging.
Return procedure for MAX6316LUK29BY/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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