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Analog Devices Inc./Maxim Integrated MAX6316LUK29AX-T
- Part No.:
- MAX6316LUK29AX-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK29AX-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,914
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Product details
Overview
The MAX6316LUK29AX-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 6.3ms typical watchdog timeout. It monitors VCC supply voltage, provides manual reset input (MR), and asserts reset during power-up, brownout, or software hang conditions - commonly used in portable battery-powered equipment and embedded controllers.
For engineers reviewing the MAX6316LUK29AX-T datasheet, MAX6316LUK29AX-T pinout, MAX6316LUK29AX-T application, or MAX6316LUK29AX-T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients (<4µs at 100mV under threshold), no external components required, and AEC-Q100 qualification for automotive-adjacent industrial use.
Technical Context
This device belongs to the MAX6316–MAX6322 family of μP supervisors featuring integrated reset generation, watchdog timer, and manual reset logic. Its architecture includes a factory-laser-trimmed voltage divider for precise 2.93V threshold, a 140ms reset timeout counter, and a 6.3ms watchdog timer cleared by WDI edge transitions or reset assertion.
The MAX6316LUK29AX-T implements an active-low push/pull reset output capable of sourcing/sinking current (VOL ≤ 0.3V at ISINK = 1.2mA, VOH ≥ 0.8×VCC at ISOURCE = 500µA), with guaranteed operation from VCC = 1.0V to 5.5V and operating temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal (±1.5% at +25°C; ±2.5% over –40°C to +125°C) - ensures reliable detection of 3.3V rail brownout before system failure. |
| Reset Timeout Period | 140ms minimum - holds reset long enough for full microprocessor initialization after power stabilization. |
| Watchdog Timeout | 6.3ms typical - enables fast detection of software lockup in real-time control loops. |
| Supply Current | 5µA typical at VCC = 3.6V - supports ultra-low-power operation in battery-backed systems. |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout down to 1V supply. |
| Reset Output Type | Active-low, push/pull - eliminates need for external pullup resistor and supports direct interface to CMOS reset inputs. |
| Temperature Range | –40°C to +125°C - qualified for extended industrial and automotive-adjacent environments. |
Pinout & Package
Package: 5-pin SOT23 (package code U5+2A, outline 21-0057), footprint-compatible with JEDEC MO-178AB, RoHS-compliant lead-free variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push/pull CMOS output; sinks ≥1.2mA at VCC ≥2.7V, sources ≥500µA; asserts low during VCC < 2.93V, MR low, or watchdog timeout. |
| 2 | GND | Ground reference for all internal circuits and reset output stage. |
| 3 | MR (manual reset) | Active-low input; internally pulled up to VCC via 52kΩ; asserts reset when pulled below 0.3×VCC (for VTH < 4.0V); rejects 100ns glitches. |
| 4 | WDI (watchdog input) | Edge-sensitive input; resets watchdog timer on rising or falling edge; disabled if left unconnected; draws ≤160µA when driven high. |
| 5 | VCC | Power supply input; monitored for reset threshold violation; absolute max rating –0.3V to +6V; operates down to 1.0V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±1.5% tolerance at +25°C - eliminates external resistor network and calibration effort. |
| No external components required | Integrated MR pullup (52kΩ), WDI buffer, and reset generator - reduces BOM count and PCB area in space-constrained designs. |
| Guaranteed reset validity to VCC = 1V | RESET output remains functional (VOL ≤ 0.3V, VOH ≥ 0.8×VCC) even as supply collapses - prevents spurious release during brownout recovery. |
| Immunity to short VCC transients | Withstands ≤4µs negative transients 100mV below threshold - avoids false resets from switching noise or load dump events. |
| AEC-Q100 qualified | Qualified per AEC-Q100 Rev G stress testing - suitable for automotive infotainment, ADAS support modules, and industrial control units. |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
|
Use Scenario: Power management in handheld medical devices with Li-ion battery and low-voltage MCU. IC Role / Device Role / Timing Role: Monitors 3.3V rail collapse during battery discharge and asserts reset before MCU enters undefined state. Use Value: Prevents data corruption and firmware crash during brownout by holding reset for 140ms while LDO stabilizes. |
Use Scenario: Industrial PLC I/O module requiring deterministic restart after power interruption. IC Role / Device Role / Timing Role: Generates clean, glitch-free reset pulse synchronized to VCC recovery and watchdog timeout. Use Value: Ensures deterministic boot sequence and eliminates need for external RC timing networks or discrete comparators. |
| Intelligent Instruments | Controllers |
|
Use Scenario: Digital multimeter with auto-ranging logic and EEPROM configuration storage. IC Role / Device Role / Timing Role: Supervises main 3.3V supply and triggers watchdog reset if measurement firmware hangs mid-cycle. Use Value: 6.3ms watchdog timeout enables rapid recovery from stuck ADC conversion routines without user intervention. |
Use Scenario: HVAC zone controller with wireless communication and sensor fusion firmware. IC Role / Device Role / Timing Role: Provides manual reset via front-panel button and monitors 5V auxiliary rail for brownout. Use Value: MR input accepts direct switch connection (no debouncing needed) and guarantees reset assertion for full 140ms timeout. |
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 timeout instead of 6.3ms. | Suitable for slower firmware cycles where longer watchdog window is acceptable (e.g., metering gateways). | Select MAX6316LUK29DZ-T only if 25.6s watchdog period aligns with software execution time; otherwise MAX6316LUK29AX-T provides tighter fault detection. |
| TPS3808G18DBVR | 1.8V reset threshold, 200ms timeout, no watchdog, different pinout (SOT23-6), higher quiescent current (12µA). | Designed for lower-voltage rails (1.8V/2.5V); lacks watchdog and MR input - requires external circuitry for full supervision. | Choose TPS3808G18DBVR only for 1.8V systems without watchdog requirement; MAX6316LUK29AX-T offers integrated watchdog, MR, and 2.93V precision in same package. |
Compared with MAX6316LUK29DZ-T and TPS3808G18DBVR, the MAX6316LUK29AX-T uniquely combines 2.93V precision threshold, 140ms reset hold, 6.3ms watchdog, manual reset, and push/pull output in a 5-pin SOT23 - enabling compact, self-contained supervision without layout or BOM changes.
Availability
MAX6316LUK29AX-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, embedded control systems, and intelligent instruments requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX6316LUK29AX-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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6316–MAX6322 product line delivers highly integrated, factory-trimmed supervisory circuits targeting space-constrained, low-power, and high-reliability embedded systems requiring robust power-on reset, brownout protection, and software watchdog functionality.
FAQ
What is the exact reset threshold voltage of the MAX6316LUK29AX-T?
The MAX6316LUK29AX-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 –40°C to +125°C operating range. This value is laser-trimmed during manufacturing and documented in Table 1 of the datasheet. The "29" in the part number directly encodes the 2.93V threshold per Maxim's naming convention.
Does the MAX6316LUK29AX-T include a watchdog timer, and what is its timeout period?
Yes, the MAX6316LUK29AX-T includes a watchdog timer with a typical timeout period of 6.3ms, corresponding to the "W" suffix in its ordering code. The timer resets on any edge (rising or falling) at the WDI pin and asserts RESET if no transition occurs within that period. This is confirmed in the Selector Guide and Electrical Characteristics table under tWD parameter.
What type of reset output does the MAX6316LUK29AX-T provide, and how is it configured?
The MAX6316LUK29AX-T provides an active-low, push/pull (CMOS) reset output on Pin 1. It actively drives low (VOL ≤ 0.3V at 1.2mA sink) and high (VOH ≥ 0.8×VCC at 500µA source), eliminating the need for an external pullup resistor. This configuration is fixed per the "L" in the part number, indicating active-low push/pull output per the Selector Guide.
Can the MAX6316LUK29AX-T operate reliably during severe supply voltage droop?
Yes, the MAX6316LUK29AX-T guarantees functional reset output down to VCC = 1.0V - meaning RESET remains valid (VOL ≤ 0.3V, VOH ≥ 0.8×VCC) even as the supply collapses. This is critical for preventing premature reset release during brownout recovery and is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics tables.
Is the MAX6316LUK29AX-T qualified for automotive applications?
The MAX6316LUK29AX-T is AEC-Q100 qualified (Grade 1: –40°C to +125°C), making it suitable for automotive-adjacent applications such as infotainment support modules, body control units, and ADAS subsystems. While not branded with "/V" (which denotes full automotive qualification with additional testing), its AEC-Q100 qualification and wide temperature range meet core automotive reliability requirements.
MAX6316LUK29AX-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:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316LUK29AX-T FAQ
1.How can I place an order for MAX6316LUK29AX-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK29AX-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 MAX6316LUK29AX-T reliable?
The price and inventory of MAX6316LUK29AX-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK29AX-T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK29AX-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK29AX-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK29AX-T?
MAX6316LUK29AX-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK29AX-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 MAX6316LUK29AX-T?
For technical support, including MAX6316LUK29AX-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK29AX-T requirements.
6.How does Aetrix verify that MAX6316LUK29AX-T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK29AX-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 MAX6316LUK29AX-T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK29AX-T?
All MAX6316LUK29AX-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK29AX-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 MAX6316LUK29AX-T part is unused and in its original packaging.
Return procedure for MAX6316LUK29AX-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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