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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:759
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Product details
Overview
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 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 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-grade reliability.
Technical Context
The MAX6316LUK29AX+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) and hysteresis of 3mV. Its reset generator asserts active-low RESET for ≥140ms after VCC rises above VRST, with propagation delay <40µs during VCC fall.
It integrates a watchdog timer cleared by WDI edge transitions (min pulse width 50ns) and a manual reset input (MR) with 52kΩ internal pullup, 100ns glitch rejection, and 230ns MR-to-reset delay at VCC = 5V. The push/pull output sources/sinks current and guarantees VOL ≤ 0.3V at ISINK = 1.2mA (VCC ≥ 2.7V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% at +25°C; ensures reliable detection of 3.3V supply brownout before system instability |
| Reset Timeout Period | 140ms minimum; holds reset long enough for microcontroller power stabilization and clock settling |
| Watchdog Timeout | 1.6s typical; provides sufficient margin to detect firmware hangs without false triggers during normal operation |
| Supply Current | 5–12µA at VCC = 3.6V; enables use in battery-powered systems with multi-year standby life |
| Operating Temperature | -40°C to +125°C; supports industrial and automotive under-hood applications without derating |
| VCC Range | 1.0V to 5.5V; guarantees valid reset output even during deep brownout conditions down to 1V |
| Reset Output Type | Active-low push/pull; drives microcontroller reset pin directly without external pullup or pulldown |
Pinout & Package
MAX6316LUK29AX+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 (lead-free peak temp +260°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low CMOS push/pull output; sinks ≥1.2mA / sources ≥500µA; asserts low when VCC < 2.93V, MR low, or watchdog times out |
| 2 | GND | Ground reference for all internal circuitry and reset timing; must be connected to system ground plane |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ; 100ns glitch rejection prevents spurious resets |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); clears internal timer on transition; disable by leaving unconnected |
| 5 | VCC | Supply input; powers internal monitor, reset generator, and watchdog; absolute max rating -0.3V to +6V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, reset timer, watchdog, and pullup resistors eliminate BOM cost and board space |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during deep undervoltage events where other supervisors fail |
| Immunity to short negative VCC transients | Withstands 200ns supply glitches down to -100mV without false reset assertion |
| AEC-Q100 qualified | Validated for automotive applications including engine control, body electronics, and ADAS subsystems |
| Factory-trimmed precision threshold | 2.93V threshold set via laser trimming yields ±1.5% tolerance at +25°C, eliminating calibration overhead |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Monitors 3.3V microcontroller supply in programmable logic controller operating in factory environments with EMI and voltage sags. IC Role / Device Role / Timing Role: Primary power-on and brownout reset supervisor; asserts active-low RESET for ≥140ms after VCC recovery. Use Value: Prevents corrupted firmware execution during line disturbances; eliminates need for external RC timing network. |
Use Scenario: Supervises 5V supply to MCU in door module controlling windows, locks, and mirrors. IC Role / Device Role / Timing Role: Dual-function supervisor providing both power monitoring and software watchdog coverage (1.6s timeout). Use Value: AEC-Q100 qualification ensures reliability across temperature extremes; MR pin enables service-mode reset via diagnostic tool. |
| Portable Medical Monitor | Battery-Powered IoT Sensor Node |
|
Use Scenario: Ensures safe boot sequence in handheld ECG device powered by single Li-ion cell (2.7–4.2V range). IC Role / Device Role / Timing Role: Low-current (≤12µA at 3.6V) supervisor with 2.93V threshold matching battery undervoltage cutoff. Use Value: Extends battery life while guaranteeing reset assertion before MCU enters undefined state during discharge. |
Use Scenario: Provides robust reset management for ARM Cortex-M0+ in wireless environmental sensor node. IC Role / Device Role / Timing Role: Combines manual reset (for OTA update recovery) and watchdog (for firmware hang detection) in one 5-pin package. Use Value: Reduces footprint vs. discrete reset + watchdog ICs; SOT23 enables automated assembly on compact PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316MUK29AX+T | Bidirectional active-low RESET output instead of push/pull; includes 4.7kΩ internal pullup + active P-FET for fast rise time | Required for interfacing with Motorola 68HC11 or other µPs with bidirectional reset pins | Select only if target MCU requires bidirectional reset signaling; otherwise MAX6316LUK29AX+T offers simpler push/pull drive |
| TPS3808G18DBVR | Fixed 1.8V reset threshold; 200ms reset timeout; no watchdog function; 1.5µA quiescent current | Suitable for low-voltage ASIC/FPGA power sequencing but lacks watchdog capability | Choose when only basic voltage monitoring is needed and ultra-low current (<2µA) is critical; not a functional substitute for watchdog-enabled designs |
Compared with MAX6316LUK29AX+T, MAX6316MUK29AX+T adds bidirectional reset support at the cost of higher complexity and identical threshold/timing, while TPS3808G18DBVR trades watchdog functionality and adjustable threshold for lower current and fixed 1.8V detection-making it unsuitable for 3.3V/5V systems requiring fault recovery.
Availability
MAX6316LUK29AX+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical monitors, and battery-powered IoT sensor nodes requiring stable component supply with full lifecycle support.
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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX6316–MAX6322 family was designed specifically for microprocessor supervision in space-constrained, high-reliability systems-delivering integrated reset, watchdog, and manual reset functions in miniature SOT23 packages with AEC-Q100 qualification.
FAQ
What is the exact reset threshold voltage of MAX6316LUK29AX+T?
The MAX6316LUK29AX+T features 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 laser-trimmed during manufacturing and specified in Table 1 of the datasheet; it is not user-adjustable.
Does MAX6316LUK29AX+T include a watchdog timer?
Yes, MAX6316LUK29AX+T includes a watchdog timer with a typical timeout period of 1.6s. The timer is cleared by any rising or falling edge on the WDI pin and asserts reset if no transition occurs within the timeout window. The watchdog function can be disabled by leaving WDI unconnected.
What is the reset output configuration of MAX6316LUK29AX+T?
MAX6316LUK29AX+T provides an active-low, push/pull reset output on Pin 1. It actively drives LOW (VOL ≤ 0.3V at ISINK = 1.2mA) and HIGH (VOH ≥ 0.8×VCC) without requiring external pullup resistors, making it compatible with standard CMOS microcontroller reset inputs.
Can MAX6316LUK29AX+T operate reliably during severe supply transients?
Yes, MAX6316LUK29AX+T is immune to short negative VCC transients: it will not falsely assert reset for pulses as large as 200ns duration or as deep as 100mV below the 2.93V threshold. This robustness is confirmed in the Typical Operating Characteristics plot "Maximum VCC Transient Duration vs. Reset Threshold Overdrive".
Is MAX6316LUK29AX+T qualified for automotive applications?
Yes, MAX6316LUK29AX+T is AEC-Q100 qualified (Grade 1: -40°C to +125°C), meaning it has undergone stress testing for automotive reliability including temperature cycling, humidity bias, and ESD. It is suitable for body electronics, infotainment, and ADAS subsystems where extended temperature operation and long-term stability are required.
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:
- 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:
- 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?
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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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