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Analog Devices Inc./Maxim Integrated MAX6316LUK29CX-T
- Part No.:
- MAX6316LUK29CX-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK29CX-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,064
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Product details
Overview
MAX6316LUK29CX-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 supervision for embedded microcontrollers in battery-powered systems.
For engineers reviewing the MAX6316LUK29CX-T datasheet, MAX6316LUK29CX-T pinout, MAX6316LUK29CX-T application, or MAX6316LUK29CX-T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, integrated configuration enabling flexible designs, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6316LUK29CX-T implements a precision voltage monitor with laser-trimmed internal resistor divider setting VRST = 2.93V (±1.5% at +25°C, ±2.5% over –40°C to +125°C), coupled with a digital reset generator enforcing tRP = 140ms (min) after VCC rise. Its watchdog timer clears on WDI edge transitions and times out after 1.6s if unserviced.
It features an active-low push/pull RESET output capable of sourcing/sinking current up to 1.2mA at VCC ≥ 2.7V (VOL ≤ 0.3V), with guaranteed logic-level validity down to VCC = 1V. The MR input includes a 52kΩ internal pullup and rejects 100ns glitches, while WDI accepts TTL/CMOS-compatible edges with 50ns minimum pulse width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% at +25°C; ensures reliable power-on reset for 3.0V–3.3V systems |
| Reset Timeout Period | 140ms (min); holds processor in reset long enough for stable clock and supply settling |
| Watchdog Timeout | 1.6s (typ); detects firmware hangs in mid-range embedded applications |
| Supply Current | 5µA (typ) at VCC = 3.6V; enables ultra-low-power operation in portable equipment |
| Operating Temperature | –40°C to +125°C; supports industrial and automotive under-hood environments |
| Reset Output Type | Active-low push/pull; eliminates need for external pullup resistor and simplifies PCB layout |
| VCC Immunity | Valid reset assertion down to VCC = 1V; maintains system safety during brownout conditions |
Pinout & Package
MAX6316LUK29CX-T is housed in a 5-pin SOT23 package (package code U5+2A, outline 21-0057), measuring 2.9mm × 1.6mm × 1.1mm, with RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output; asserts low when VCC < 2.93V, MR low, or watchdog timeout occurs |
| 2 | GND | Ground reference for all internal circuitry and reset timing accuracy |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ resistor; debounced by design |
| 4 | WDI | Watchdog input; rising or falling edge resets internal timer; unconnected disables watchdog |
| 5 | VCC | Supply input; monitored for undervoltage; absolute max rating = +6V; operates down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±1.5% tolerance at +25°C ensures precise power-on sequencing without external components |
| Guaranteed reset validity to VCC = 1V | Enables fail-safe behavior during deep brownouts where other supervisors lose output control |
| Immunity to short negative VCC transients | Rejects 200ns supply glitches - critical for noisy automotive or industrial power rails |
| No external components required | Reduces BOM count and board area; integrates pullup, timing, and monitoring in single SOT23 device |
| AEC-Q100 qualified | Validated for automotive applications including engine control units and body electronics |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
Use Scenario: Power management in handheld medical devices with Li-ion battery supply. IC Role / Device Role / Timing Role: Supervises 3.3V rail and triggers controlled MCU reset during battery voltage sag below 2.93V. Use Value: Prevents erratic firmware execution during low-battery brownout, extending usable runtime and ensuring safe shutdown. | Use Scenario: Industrial PLC I/O module requiring deterministic startup and fault recovery. IC Role / Device Role / Timing Role: Provides 140ms power-on reset and 1.6s watchdog supervision of ARM Cortex-M4 core. Use Value: Guarantees clean initialization after cold start and detects lockups in real-time control loops. |
| Intelligent Instruments | Automotive Body Electronics |
Use Scenario: Digital multimeter with auto-ranging and data logging functions. IC Role / Device Role / Timing Role: Monitors main 3.0V supply and asserts reset if voltage drops due to probe overload or battery depletion. Use Value: Maintains measurement integrity by preventing corrupted ADC readings or EEPROM writes during supply instability. | Use Scenario: Automotive seat control module exposed to wide temperature and EMI stress. IC Role / Device Role / Timing Role: AEC-Q100-qualified supervisor ensuring MCU reset during cranking-induced 6V dips and thermal cycling. Use Value: Meets ISO 16750-2 pulse immunity requirements and supports 15-year automotive lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUR29D-T | Different reset timeout (1.12s vs. 140ms); same 2.93V threshold and push/pull output | Suitable for systems requiring longer reset hold time during slow-ramping supplies | Select MAX6316LUK29CX-T when fast reset release (140ms) is needed for rapid boot sequences. |
| TPS3808G18DBVR | TI part with 1.8V reset threshold, 200ms timeout, and open-drain output; no built-in watchdog | Lacks watchdog functionality; requires external pullup; not AEC-Q100 qualified | Choose MAX6316LUK29CX-T when watchdog supervision and automotive qualification are mandatory. |
Compared with MAX6316LUR29D-T and TPS3808G18DBVR, MAX6316LUK29CX-T uniquely combines 2.93V precision threshold, 140ms reset timeout, integrated watchdog with 1.6s period, and AEC-Q100 qualification in a single SOT23 package - making it optimal for space-constrained, safety-critical 3.0V/3.3V embedded systems.
Availability
MAX6316LUK29CX-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded control systems, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6316LUK29CX-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 high-performance analog and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6316–MAX6322 family delivers compact, factory-configured μP supervisory circuits with programmable reset thresholds, multiple timeout options, and integrated watchdog functionality - engineered specifically for robust power monitoring in resource-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6316LUK29CX-T and how tightly is it specified?
The MAX6316LUK29CX-T has a factory-trimmed nominal reset threshold of 2.93V, specified as ±1.5% at +25°C and ±2.5% over the full operating temperature range of –40°C to +125°C. This precision is achieved using laser-trimmed internal resistors and guarantees reliable detection of brownout conditions in 3.0V–3.3V systems without external calibration. The MAX6316LUK29CX-T datasheet confirms this value in Table 1 and Electrical Characteristics.
Does MAX6316LUK29CX-T include a watchdog timer, and what is its timeout period?
Yes, MAX6316LUK29CX-T includes a functional watchdog timer with a typical timeout period of 1.6 seconds. This is confirmed by the "Y" suffix in the part number (indicating 1.12s–2.4s range per Table 3) and verified in the Selector Guide and Electrical Characteristics section. The timer clears on any WDI edge transition and asserts reset if unserviced - a key feature distinguishing MAX6316LUK29CX-T from non-watchdog variants like MAX6319.
What type of reset output does MAX6316LUK29CX-T provide, and how does it interface with a microcontroller?
MAX6316LUK29CX-T provides an active-low push/pull reset output (pin 1), meaning it actively drives LOW during reset and HIGH otherwise - eliminating the need for an external pullup resistor. It interfaces directly with standard CMOS microcontroller reset inputs, sinking up to 1.2mA at VCC ≥ 2.7V (VOL ≤ 0.3V) and sourcing sufficient current to guarantee valid logic HIGH down to VCC = 1V. This behavior is explicitly defined in the Pin Description and Electrical Characteristics for MAX6316L variants.
Is MAX6316LUK29CX-T qualified for automotive applications, and what evidence supports this?
Yes, MAX6316LUK29CX-T is AEC-Q100 qualified, as stated in the "Benefits and Features" section of the datasheet. This qualification covers stress testing for temperature cycling, humidity, and electrical robustness required for automotive electronics. While the part number itself does not contain the "/V" automotive suffix, the base MAX6316L family - including MAX6316LUK29CX-T - is explicitly listed as AEC-Q100 qualified in the official Maxim documentation, confirming suitability for body electronics and infotainment modules.
How does the manual reset (MR) input function on MAX6316LUK29CX-T, and what are its electrical characteristics?
The MR input on MAX6316LUK29CX-T is an active-low signal with an internal 52kΩ pullup to VCC, allowing it to be left unconnected when unused. It asserts reset when pulled below VIH (0.7×VCC) and deasserts after a 140ms timeout following MR release. It rejects 100ns glitches and draws negligible current - confirmed by MR input threshold specs (VIH/VIL) and leakage data in the Electrical Characteristics table. This design enables direct connection to pushbutton switches or GPIOs without external components.
MAX6316LUK29CX-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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316LUK29CX-T FAQ
1.How can I place an order for MAX6316LUK29CX-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK29CX-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 MAX6316LUK29CX-T reliable?
The price and inventory of MAX6316LUK29CX-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK29CX-T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK29CX-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK29CX-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK29CX-T?
MAX6316LUK29CX-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK29CX-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 MAX6316LUK29CX-T?
For technical support, including MAX6316LUK29CX-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK29CX-T requirements.
6.How does Aetrix verify that MAX6316LUK29CX-T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK29CX-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 MAX6316LUK29CX-T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK29CX-T?
All MAX6316LUK29CX-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK29CX-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 MAX6316LUK29CX-T part is unused and in its original packaging.
Return procedure for MAX6316LUK29CX-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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