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Analog Devices Inc./Maxim Integrated MAX6316LUK26CY+T
- Part No.:
- MAX6316LUK26CY+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK26CY+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,565
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Product details
Overview
The MAX6316LUK26CY+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, 2.63V 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 and industrial systems.
For engineers reviewing the MAX6316LUK26CY+T datasheet, MAX6316LUK26CY+T pinout, MAX6316LUK26CY+T application, or MAX6316LUK26CY+T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients (<4µs at 100mV under threshold), bidirectional reset compatibility support (via internal active pullup), and AEC-Q100 qualification for automotive-adjacent designs.
Technical Context
The MAX6316LUK26CY+T implements a precision voltage-monitoring comparator with ±1.5% threshold accuracy at +25°C and ±2.5% over –40°C to +125°C, paired with a digitally trimmed reset timer and independent watchdog timer. Its reset generator asserts active-low RESET when VCC falls below 2.63V, after MR assertion, or upon WDI timeout - holding RESET low for ≥140ms after VCC recovery.
This variant belongs to the MAX6316L subfamily: it features push/pull active-low RESET (not open-drain or bidirectional), includes both manual reset (MR) and watchdog input (WDI), and guarantees VOL ≤ 0.3V at ISINK = 1.2mA (VCC ≥ 2.7V). No external components are required for basic operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal (factory-trimmed), ±1.5% at +25°C - ensures reliable brownout detection for 2.7V/3.3V systems. |
| Reset Timeout Period | 140ms minimum - holds processor in reset long enough for stable power rail recovery and clock stabilization. |
| Watchdog Timeout | 1.6s typical - provides robust software hang detection without excessive system interruption latency. |
| Supply Current | 5µA typical at VCC = 3.6V - enables multi-year operation in coin-cell–powered portable instruments. |
| Operating Temperature | –40°C to +125°C - supports deployment in under-hood automotive, industrial PLC, and outdoor edge devices. |
| Reset Output Type | Active-low, push/pull - drives RESET directly without external pullup; sinks 1.2mA at VCC ≥ 2.7V for logic-level compatibility. |
| AEC-Q100 Qualified | Yes - meets stress test requirements for automotive-grade reliability (Grade 2: –40°C to +105°C ambient). |
Pinout & Package
MAX6316LUK26CY+T is housed in a RoHS-compliant, lead-free 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 is 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | CMOS push/pull output; asserts logic low during fault conditions; guaranteed valid down to VCC = 1V. |
| 2 | GND | Ground reference for all internal comparators, timers, and output drivers; must be low-impedance connection. |
| 3 | MR (manual reset) | Active-low input; internally pulled up to VCC via 52kΩ; debounced by design; rejects 100ns glitches. |
| 4 | WDI (watchdog input) | Edge-sensitive input; reset triggered if no transition occurs within 1.6s; disable by leaving floating or high-Z. |
| 5 | VCC | Power supply input (1.0V to 5.5V); reset asserted when voltage drops below 2.63V threshold. |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, timing resistors, and pullup enable full supervision with zero external parts. |
| Guaranteed reset down to VCC = 1V | Ensures deterministic reset behavior during deep brownout or battery discharge - critical for data retention safety. |
| Immunity to short VCC transients | Rejects <4µs negative spikes at 100mV under threshold - eliminates false resets from switching noise or ESD coupling. |
| Factory-trimmed precision thresholds | 2.63V threshold with ±1.5% tolerance at +25°C - eliminates calibration overhead in production test. |
| AEC-Q100 qualified | Validated for automotive-adjacent applications including telematics, ADAS sensors, and industrial gateways. |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
Use Scenario: Long-life handheld meter with lithium coin cell and ultra-low-power MCU. IC Role / Device Role / Timing Role: Supervises VCC decay, triggers controlled shutdown before data corruption, and resets MCU on software lockup via WDI. Use Value: 5µA quiescent current extends battery life beyond 5 years; 140ms reset hold prevents boot failure during cold-start voltage sag. |
Use Scenario: Industrial PLC I/O module operating in unregulated 24V DC environments with ripple and transients. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output, asserts reset on undervoltage or watchdog timeout, and interfaces with MR button for field service. Use Value: ±2.5% threshold tolerance over –40°C to +125°C ensures consistent trip point across temperature; AEC-Q100 qualification validates reliability in harsh EMI environments. |
| Intelligent Instruments | Controllers |
Use Scenario: Portable gas analyzer with real-time sensor fusion and flash-based firmware updates. IC Role / Device Role / Timing Role: Prevents execution from corrupted memory during power interruption; uses MR to initiate safe firmware rollback sequence. Use Value: MR pulse width tolerance of 1.5µs enables reliable button press detection even with contact bounce; internal 52kΩ pullup eliminates external resistor. |
Use Scenario: HVAC zone controller with multiple communication interfaces (UART, I²C) and EEPROM-backed configuration. IC Role / Device Role / Timing Role: Ensures clean MCU initialization after brownout; watchdog guards against UART deadlock or I²C bus hang. Use Value: 1.6s watchdog period balances responsiveness and avoidance of spurious timeouts during burst communication; push/pull RESET drives multiple loads without signal degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316MUK26CY+T | Bidirectional (not push/pull) RESET output; includes internal 4.7kΩ pullup + active P-FET for fast rise time on shared reset bus. | Required for Motorola 68HC11 or other µPs with bidirectional reset I/O; incompatible with standard push/pull-only reset inputs. | Select MAX6316MUK26CY+T only when interfacing with bidirectional-reset microcontrollers; otherwise MAX6316LUK26CY+T is optimal for simplicity and drive strength. |
| TLV803EB26DBVR | Single-function reset IC (no watchdog or MR); 2.63V threshold; SOT23-5; 0.9µA max ICC; no AEC-Q100 rating. | Suitable only for basic power-on reset where watchdog supervision and manual reset are unnecessary. | Choose TLV803EB26DBVR for cost-sensitive, ultra-low-power applications without supervision complexity; MAX6316LUK26CY+T adds essential safety layers. |
Compared with MAX6316MUK26CY+T, the MAX6316LUK26CY+T offers higher sink current (1.2mA vs. 1.6mA pullup-limited) and simpler interface, while TLV803EB26DBVR trades away watchdog/MR functionality for lower quiescent current and reduced BOM count - making each suitable for distinct system safety and feature requirements.
Availability
MAX6316LUK26CY+T is available at Aetrix Electronics and suitable for portable instrumentation, industrial controllers, and intelligent sensor nodes requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for MAX6316LUK26CY+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, factory-configured supervisory circuits targeting space-constrained, reliability-critical embedded systems where power integrity, software robustness, and qualification compliance are non-negotiable.
FAQ
What is the exact reset threshold voltage of the MAX6316LUK26CY+T?
The MAX6316LUK26CY+T has a factory-trimmed nominal reset threshold of 2.63V, with tolerance of ±1.5% at +25°C and ±2.5% over the full –40°C to +125°C operating range. This value is confirmed in Table 1 of the official Maxim datasheet (Rev 14, 11/18) and corresponds to the "26" suffix in the part number.
Does the MAX6316LUK26CY+T include watchdog and manual reset functionality?
Yes, the MAX6316LUK26CY+T includes both watchdog and manual reset features. It monitors the WDI pin for activity and asserts reset if no edge occurs within its 1.6s typical timeout period. The MR pin is an active-low input that forces reset when pulled low, with internal 52kΩ pullup enabling direct switch connection without external components.
What package type and footprint does the MAX6316LUK26CY+T use?
The MAX6316LUK26CY+T uses a 5-pin SOT23 package (package code U5+2A, outline 21-0057), with land pattern number 90-0174. It is RoHS-compliant and lead-free, marked "+T" in the suffix. The footprint requires 2.9mm × 1.6mm board area and supports reflow soldering up to +260°C.
Is the MAX6316LUK26CY+T qualified for automotive applications?
Yes, the MAX6316LUK26CY+T is AEC-Q100 qualified (Grade 2: –40°C to +105°C ambient), as explicitly stated in the Benefits and Features section of the datasheet. While not labeled "/V", its qualification enables use in automotive-adjacent systems such as telematics modules, body control units, and ADAS sensor interfaces.
What is the minimum reset timeout period for the MAX6316LUK26CY+T?
The MAX6316LUK26CY+T has a minimum reset timeout period of 140ms, corresponding to the "C" suffix in its ordering code (MAX6316LUK26CY+T). This value is guaranteed across temperature and supply voltage, ensuring sufficient hold time for stable power rail recovery and oscillator startup in microcontroller systems.
MAX6316LUK26CY+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:
- 2.63V
- 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
MAX6316LUK26CY+T FAQ
1.How can I place an order for MAX6316LUK26CY+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK26CY+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 MAX6316LUK26CY+T reliable?
The price and inventory of MAX6316LUK26CY+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK26CY+T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK26CY+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK26CY+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK26CY+T?
MAX6316LUK26CY+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK26CY+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 MAX6316LUK26CY+T?
For technical support, including MAX6316LUK26CY+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK26CY+T requirements.
6.How does Aetrix verify that MAX6316LUK26CY+T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK26CY+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 MAX6316LUK26CY+T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK26CY+T?
All MAX6316LUK26CY+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK26CY+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 MAX6316LUK26CY+T part is unused and in its original packaging.
Return procedure for MAX6316LUK26CY+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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