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Analog Devices Inc./Maxim Integrated MAX6316LUK29BX-T
- Part No.:
- MAX6316LUK29BX-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK29BX-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
MAX6316LUK29BX-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 MAX6316LUK29BX-T datasheet, MAX6316LUK29BX-T pinout, MAX6316LUK29BX-T application, or MAX6316LUK29BX-T equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in battery-powered and industrial control systems, and validated alternative parts with documented functional differences.
Technical Context
The MAX6316LUK29BX-T integrates a precision voltage detector with ±1.5% threshold accuracy at +25°C (±2.5% over -40°C to +125°C), a 140ms reset timeout generator, and a 1.6s watchdog timer cleared by WDI edge transitions. Its push/pull reset output guarantees valid logic levels down to VCC = 1V and sinks up to 3.2mA at 4.5V.
It features a dedicated manual reset input (MR) with internal 52kΩ pullup, 100ns glitch rejection, and 230ns MR-to-reset delay at 5V; the watchdog input (WDI) accepts 50ns pulses and draws ≤160µA average current when actively serviced.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal (factory-trimmed), ±2.5% over full temperature range - ensures accurate brownout detection for 3.3V systems. |
| Reset Timeout Period | 140ms minimum - holds reset asserted long enough for microcontroller power stabilization and clock lock. |
| Watchdog Timeout | 1.6s typical - provides robust software hang detection without excessive system interruption. |
| Supply Current | 5µA typical at 3.6V - enables ultra-low-power operation in battery-backed applications. |
| Operating Temperature | -40°C to +125°C - supports automotive and industrial environments without derating. |
| Reset Output Type | Active-low, push/pull - drives reset line directly without external pullup; sinks 3.2mA at 4.5V. |
| VCC Range | 1.0V to 5.5V - guarantees reset validity during deep brownout conditions down to 1V supply. |
Pinout & Package
MAX6316LUK29BX-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, with thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output; asserts low when VCC < 2.93V, MR low, or watchdog times out; deasserts after 140ms timeout. |
| 2 | GND | Ground reference for all internal circuitry and reset output sink path. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ; 100ns glitch rejection prevents false triggers. |
| 4 | WDI | Watchdog input; reset triggered if no rising/falling edge occurs within 1.6s; accepts 50ns pulses. |
| 5 | VCC | Supply input; powers device and serves as monitored rail; reset asserted when VCC falls below 2.93V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% tolerance over -40°C to +125°C - eliminates external resistor network and calibration effort. |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during severe brownout, preventing undefined MCU states. |
| No external components required | Integrates voltage reference, timing circuits, and push/pull driver - reduces BOM count and PCB area. |
| Immunity to short negative VCC transients | Rejects ≤4µs, 100mV-under-threshold glitches - avoids spurious resets in noisy power environments. |
| AEC-Q100 qualified | Validated for automotive applications per stress test requirements - supports under-hood and infotainment use. |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
|
Use Scenario: Power management in handheld medical devices with Li-ion battery supply subject to voltage sag during peak load. IC Role / Device Role / Timing Role: Supervisory IC asserting reset when battery voltage drops below 2.93V, ensuring safe shutdown before data corruption. Use Value: Prevents firmware crash and EEPROM write corruption during brownout, extending field reliability. |
Use Scenario: Industrial PLC module operating in wide-temperature environments with intermittent power interruptions. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail and provides 140ms reset hold time plus 1.6s watchdog supervision of main MCU. Use Value: Guarantees clean restart after power recovery and detects firmware lockups without host intervention. |
| Computers | Intelligent Instruments |
|
Use Scenario: Reset sequencing in compact single-board computers using 3.3V core supply and ARM-based SoC. IC Role / Device Role / Timing Role: Generates synchronized active-low reset signal compliant with ARM reset timing requirements (≥100ms). Use Value: Eliminates need for RC-based reset generators, improving timing accuracy and temperature stability. |
Use Scenario: Calibration-grade digital multimeter with isolated analog front-end and microcontroller-based processing. IC Role / Device Role / Timing Role: Provides fail-safe reset during supply fluctuations caused by high-current measurement bursts. Use Value: Maintains measurement integrity by forcing controlled reboot instead of erratic ADC sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK29DZ-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., low-duty-cycle sensor nodes). | Select when extended watchdog supervision is needed; otherwise, MAX6316LUK29BX-T offers tighter timing control. |
| TLV803EB29DBZR | 2.93V threshold, 140ms reset timeout, no watchdog or manual reset; SOT23-3 package (no WDI/MR pins). | Limited to basic supply monitoring without software supervision or user-initiated reset. | Choose only for cost-sensitive, watchdog-free designs where MR functionality is unnecessary. |
Compared with MAX6316LUK29DZ-T and TLV803EB29DBZR, the MAX6316LUK29BX-T uniquely balances precise 140ms reset hold time with 1.6s watchdog supervision and full manual reset support in a single 5-pin SOT23, making it optimal for resource-constrained embedded controllers needing both power and software fault coverage.
Availability
MAX6316LUK29BX-T is available at Aetrix Electronics and suitable for portable computers, embedded control systems, and intelligent instruments requiring stable component supply across automotive and industrial temperature ranges.
Supply support for MAX6316LUK29BX-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 power, sensing, and interface applications, with emphasis on high-reliability industrial and automotive markets.
The MAX6316–MAX6322 family was engineered specifically for microprocessor reset supervision in space-constrained, low-power systems requiring guaranteed reset assertion during brownout, watchdog-based software fault recovery, and manual reset capability - all in miniature SOT23 packaging.
FAQ
What is the exact reset threshold voltage of the MAX6316LUK29BX-T?
The MAX6316LUK29BX-T has a factory-trimmed nominal reset threshold of 2.93V, with tolerance of ±1.5% at +25°C and ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in Table 1 and Standard Versions table of the official datasheet, and corresponds to the "29" suffix in the part number.
Does the MAX6316LUK29BX-T include a watchdog timer, and what is its timeout period?
Yes, the MAX6316LUK29BX-T includes a watchdog timer with a typical timeout period of 1.6 seconds, indicated by the "X" in the "BX" suffix. The watchdog is cleared by any rising or falling edge on the WDI pin and asserts reset if unattended for ≥1.6s. This is explicitly defined in the Selector Guide and Electrical Characteristics tables.
What type of reset output does the MAX6316LUK29BX-T provide, and how is it configured?
The MAX6316LUK29BX-T provides an active-low, push/pull reset output (pin 1), as designated by the "L" in the part number prefix. It sources and sinks current without requiring an external pullup resistor, delivering VOL ≤ 0.4V at 3.2mA sink load and VOH ≥ 0.8×VCC when sourcing 500µA - fully specified in the Electrical Characteristics section.
What is the minimum reset timeout period for the MAX6316LUK29BX-T, and how is it set?
The MAX6316LUK29BX-T has a fixed minimum reset timeout period of 140ms, denoted by the "C" in the "UK29C" portion of the part number. This value is factory-programmed and non-adjustable; it defines the minimum duration RESET remains low after VCC rises above 2.93V or after MR release, ensuring sufficient MCU initialization time.
Is the MAX6316LUK29BX-T qualified for automotive applications?
Yes, the MAX6316LUK29BX-T is AEC-Q100 qualified, as explicitly stated in the Benefits and Features section of the datasheet. It operates across -40°C to +125°C, meets automotive stress test requirements, and is suitable for under-hood and infotainment applications where reliability under thermal and electrical stress is critical.
MAX6316LUK29BX-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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316LUK29BX-T FAQ
1.How can I place an order for MAX6316LUK29BX-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK29BX-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 MAX6316LUK29BX-T reliable?
The price and inventory of MAX6316LUK29BX-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK29BX-T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK29BX-T?
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MAX6316LUK29BX-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK29BX-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 MAX6316LUK29BX-T?
For technical support, including MAX6316LUK29BX-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK29BX-T requirements.
6.How does Aetrix verify that MAX6316LUK29BX-T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK29BX-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 MAX6316LUK29BX-T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK29BX-T?
All MAX6316LUK29BX-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK29BX-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 MAX6316LUK29BX-T part is unused and in its original packaging.
Return procedure for MAX6316LUK29BX-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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