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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:4,168
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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 functionality for embedded microcontroller systems in portable and industrial equipment.
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 (<4µs at 100mV under threshold), integrated 4.7kΩ pullup on MR input, and AEC-Q100 qualification for automotive-adjacent designs.
Technical Context
The MAX6316LUK29CX+T implements a precision voltage monitor with laser-trimmed resistive 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 threshold, with propagation delay <40µs during VCC fall.
It integrates a watchdog timer cleared by WDI edge transitions (min pulse width 50ns), with fixed 1.6s timeout (Y-grade). The manual reset input (MR) features 52kΩ internal pullup, 100ns glitch rejection, and 1.5µs min pulse width at full temperature range - compatible with TTL/CMOS logic and momentary switches without external debouncing.
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 before brownout occurs |
| Reset Timeout Period | 140ms minimum; guarantees sufficient hold time for microprocessor initialization sequences |
| Watchdog Timeout | 1.6s typical (Y-grade); provides robust software hang detection without requiring firmware tuning |
| Supply Current | 5µA typical at VCC = 3.6V; enables ultra-low-power operation in battery-backed applications |
| Operating Temperature | -40°C to +125°C; supports deployment in automotive engine compartments and industrial control enclosures |
| Reset Output Type | Active-low push/pull; drives RESET directly without external pullup, sinking 1.2mA at VCC ≥ 2.7V |
| VCC Immunity | Valid reset assertion down to VCC = 1V; maintains system safety during deep undervoltage conditions |
Pinout & Package
MAX6316LUK29CX+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 gull-wing leads. Thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low CMOS push/pull output; sinks 1.2mA at VCC ≥ 2.7V, sources current to VCC; valid down to VCC = 1V |
| 2 | GND | Ground reference for all internal circuits and reset timing; must be low-impedance connection |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ resistor; accepts TTL/CMOS logic levels |
| 4 | WDI | Watchdog input; edge-sensitive (rising/falling); clears internal timer on transition; disable by leaving floating |
| 5 | VCC | Supply input (1.0V–5.5V); reset asserted when VCC falls below 2.93V; absolute max rating = +6V |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, reset timer, watchdog timer, and MR pullup eliminate BOM cost and layout area |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during severe brownout, preventing undefined MCU states |
| Immunity to short VCC transients | Rejects <4µs negative glitches at 100mV under threshold - avoids spurious resets in noisy power environments |
| AEC-Q100 qualified | Validated for automotive-grade reliability (Grade 1: -40°C to +125°C junction), suitable for ADAS and body electronics |
| Factory-trimmed precision | Laser-trimmed threshold (2.93V) and timeout (140ms) eliminate calibration effort and improve production yield |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
|
Use Scenario: Power management in handheld medical devices with Li-ion battery and low-power MCU. IC Role / Device Role / Timing Role: Monitors battery voltage decay and asserts reset before brownout-induced data corruption. Use Value: 5µA supply current extends battery life; 140ms reset timeout accommodates slow-start DC-DC converters. |
Use Scenario: Industrial PLC module with ARM Cortex-M4 and real-time OS. IC Role / Device Role / Timing Role: Provides hardware-based watchdog supervision and power-on reset coordination. Use Value: 1.6s watchdog timeout aligns with deterministic task scheduling; MR input enables front-panel reset button. |
| Intelligent Instruments | Computers |
|
Use Scenario: Portable oscilloscope with FPGA-based acquisition and display subsystems. IC Role / Device Role / Timing Role: Ensures synchronized power-up sequencing across analog, digital, and display domains. Use Value: 2.93V threshold matches 3.0V rail tolerance; push/pull RESET eliminates need for external pullup resistor. |
Use Scenario: Fanless embedded PC for kiosk or digital signage with Intel Atom processor. IC Role / Device Role / Timing Role: Supervises main 3.3V supply and provides fail-safe reset during thermal throttling events. Use Value: -40°C to +125°C operation supports fanless enclosure temperatures; AEC-Q100 qualification adds long-term reliability margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUR29CY+T | Same 2.93V threshold and 140ms timeout, but uses C-grade (commercial temp: 0°C to +70°C) instead of extended -40°C to +125°C | Not suitable for automotive, industrial, or outdoor deployments requiring wide temperature operation | Select only for cost-sensitive consumer electronics where ambient temperature remains controlled |
| TPS3808G18DBVR | 2.5V reset threshold, 200ms timeout, no watchdog; TI part with 1.6µA quiescent current and 1.8V–6.0V VCC range | Lacks watchdog functionality and MR input; requires external pullup for open-drain RESET | Choose when watchdog is unnecessary and ultra-low IQ (<2µA) is critical for multi-year battery life |
Compared with MAX6316LUK29CX+T, MAX6316LUR29CY+T sacrifices temperature range for lower cost, while TPS3808G18DBVR trades watchdog capability and integrated MR for significantly lower supply current - making each alternative suitable only when those specific trade-offs align with system requirements.
Availability
MAX6316LUK29CX+T is available at Aetrix Electronics and suitable for portable computers, embedded control systems, and intelligent instruments requiring stable component supply with AEC-Q100 reliability and extended temperature support.
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 precision analog and mixed-signal ICs for power, sensing, and interface applications in industrial, automotive, and communications markets.
The MAX6316–MAX6322 family delivers highly integrated μP supervisory functions - combining reset monitoring, watchdog, and manual reset in miniature SOT23 packages for space-constrained, high-reliability embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6316LUK29CX+T?
The MAX6316LUK29CX+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 laser-trimmed during manufacturing and documented in Table 1 of the MAX6316–MAX6322 datasheet. The 29 in the part number directly encodes this 2.93V threshold.
Does MAX6316LUK29CX+T include a watchdog timer, and what is its timeout period?
Yes, MAX6316LUK29CX+T includes a watchdog timer with a typical timeout period of 1.6 seconds (Y-grade). The timer is cleared by any rising or falling edge on the WDI pin and automatically resets if the microprocessor fails to service it within that interval. The timeout is factory-programmed and cannot be adjusted externally.
What type of reset output does MAX6316LUK29CX+T provide, and how is it driven?
MAX6316LUK29CX+T provides an active-low push/pull reset output (pin 1). It actively drives LOW (VOL ≤ 0.3V at 1.2mA sink) and actively drives HIGH (VOH ≥ 0.8×VCC) without requiring an external pullup resistor. This output remains valid down to VCC = 1V, ensuring robust reset signaling even during deep undervoltage conditions.
Can MAX6316LUK29CX+T operate in automotive environments?
Yes, MAX6316LUK29CX+T is AEC-Q100 qualified and rated for operation from -40°C to +125°C, making it suitable for under-hood and cabin automotive applications such as body control modules, infotainment power supervisors, and ADAS sensor nodes - provided the system-level design meets relevant EMC and qualification requirements.
How is the manual reset (MR) input configured on MAX6316LUK29CX+T?
The MR input on MAX6316LUK29CX+T is active-low and features an internal 52kΩ pullup resistor to VCC, allowing it to be left unconnected when unused. It accepts TTL/CMOS logic levels, rejects 100ns glitches, and requires a minimum pulse width of 1.5µs over the full temperature range. A simple momentary switch from MR to GND provides functional reset without external debouncing.
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:
- 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:
- 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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