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Analog Devices Inc./Maxim Integrated MAX6316LUK31CY-T
- Part No.:
- MAX6316LUK31CY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK31CY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,569
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Product details
Overview
The MAX6316LUK31CY-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, manual reset input, and watchdog timer. It features a factory-trimmed 3.08V reset threshold (±1.5% at +25°C), 140ms minimum reset timeout, and 1.6s typical watchdog timeout. Designed for brownout protection and system recovery in battery-powered embedded controllers.
For engineers reviewing the MAX6316LUK31CY-T datasheet, MAX6316LUK31CY-T pinout, MAX6316LUK31CY-T application, or MAX6316LUK31CY-T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, immunity to sub-4µs negative VCC transients, bidirectional reset compatibility support, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
This device implements a precision voltage monitor with laser-trimmed resistor divider setting the 3.08V reset threshold, coupled with a digital reset timeout counter (140ms min) and independent watchdog timer (1.6s typ). The push/pull reset driver guarantees VOL ≤ 0.3V at ISINK = 1.2mA (VCC ≥ 2.7V) and VOH ≥ 0.8×VCC at ISOURCE = 500µA (VCC ≥ 2.7V).
It integrates manual reset debouncing (1.5µs MR pulse width min, 100ns glitch rejection), watchdog transition detection (50ns pulse width support), and internal 52kΩ MR pullup. Reset assertion occurs on VCC drop below VRST, MR low, or WDI timeout - with reset deassertion delayed by tRP after recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V ±1.5% at +25°C; stable over -40°C to +125°C with 40ppm/°C tempco |
| Reset Timeout | 140ms minimum; ensures reliable µP initialization after power-up/brownout |
| Watchdog Timeout | 1.6s typical; detects software hangs without requiring external timing components |
| Supply Current | 5µA typical at VCC = 3.6V; enables multi-year operation in battery-powered systems |
| Operating Voltage | 1.0V to 5.5V; valid reset asserted even as VCC decays to 1V |
| Reset Output Type | Active-low push/pull; drives high/low directly without external pullup resistor |
| Package | SOT23-5 (U5+2A); 2.9mm × 1.6mm footprint, JEDEC-compliant thermal performance |
Pinout & Package
MAX6316LUK31CY-T is housed in a RoHS-compliant 5-pin SOT23 package (package code U5+2A, outline 21-0057), optimized for space-constrained portable and automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output; sinks 1.2mA @ VCC ≥ 2.7V, sources 500µA @ VCC ≥ 2.7V |
| 2 | GND | Ground reference for all internal circuitry and reset output stage |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ resistor |
| 4 | WDI | Watchdog input; edge-triggered reset enable; accepts 50ns pulses |
| 5 | VCC | Supply input; reset asserts when VCC falls below 3.08V threshold |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Integrated voltage reference, reset timer, watchdog logic, and MR pullup eliminate BOM cost and layout area |
| Guaranteed reset down to VCC = 1V | Ensures deterministic system state during deep brownout or battery depletion |
| Immunity to short VCC transients | Rejects <4µs negative glitches - prevents spurious resets in noisy power environments |
| AEC-Q100 qualified | Validated for automotive temperature range (-40°C to +125°C) and reliability stress testing |
| Factory-trimmed precision | 3.08V threshold set via laser trimming; eliminates post-manufacture calibration |
Applications
| Portable/Battery-Powered Equipment | Embedded Control Systems |
|---|---|
Use Scenario: Long-life handheld medical monitors powered by single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Supervises VCC during battery discharge curve; asserts reset before MCU enters undefined state below 3.0V. Use Value: Prevents data corruption and unsafe operation by guaranteeing clean reset at precisely 3.08V, even as battery voltage sags under load. | Use Scenario: Industrial PLC I/O modules operating in wide-temperature enclosures. IC Role / Device Role / Timing Role: Monitors 3.3V supply rail and provides watchdog supervision of firmware execution. Use Value: 140ms reset timeout ensures full register initialization; 1.6s watchdog timeout catches infinite loops without CPU overhead. |
| Intelligent Instruments | Automotive Body Electronics |
Use Scenario: Portable multimeters with auto-ranging and Bluetooth telemetry. IC Role / Device Role / Timing Role: Generates power-on reset and detects firmware lockup via WDI toggling. Use Value: Push/pull RESET eliminates need for external pullup, reducing component count and PCB area in compact housing. | Use Scenario: Automotive door module controlling window lift, mirror fold, and LED status indicators. IC Role / Device Role / Timing Role: Provides AEC-Q100-compliant reset supervision of 5V microcontroller supply. Use Value: Valid reset assertion down to VCC = 1V ensures fail-safe behavior during cold-crank battery dip conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316MUK31CY-T | Bidirectional active-low reset output instead of push/pull; includes internal 4.7kΩ pullup + active P-FET | Required for Motorola 68HC11-style µPs with bidirectional reset pins | Select when interfacing with legacy µPs needing bidirectional reset bus arbitration |
| TPS3808G33DBVR | 3.3V fixed reset threshold (not adjustable), 200ms reset timeout, no manual reset input | Lacks MR pin and programmable reset threshold; simpler but less flexible | Choose for cost-sensitive designs where 3.3V threshold suffices and MR is unnecessary |
Compared with MAX6316LUK31CY-T, the MAX6316MUK31CY-T supports bidirectional reset arbitration critical for 68HC11-based systems, while TPS3808G33DBVR offers lower cost and smaller footprint but sacrifices threshold adjustability and manual reset capability.
Availability
MAX6316LUK31CY-T is available at Aetrix Electronics and suitable for portable computers, embedded control systems, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6316LUK31CY-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 connectivity in demanding industrial and automotive applications.
The MAX6316–MAX6322 family delivers highly integrated µP supervisory functions - combining reset monitoring, watchdog, and manual reset in miniature SOT23 packages for space- and reliability-critical embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6316LUK31CY-T?
The MAX6316LUK31CY-T has a factory-trimmed nominal reset threshold of 3.08V, 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 corresponds to the "31" suffix in the part number per Table 1 of the datasheet.
Does the MAX6316LUK31CY-T include a watchdog timer, and what is its timeout period?
Yes, the MAX6316LUK31CY-T includes a watchdog timer with a typical timeout period of 1.6 seconds. This is confirmed by the "Y" character in the ordering code position indicating the Y-T variant (1.12s to 2.4s range), and matches the standard versions table listing 1.6s for MAX6316LUK31CY-T.
What type of reset output does the MAX6316LUK31CY-T provide, and how is it driven?
The MAX6316LUK31CY-T provides an active-low push/pull reset output (pin 1). It actively drives both high and low states - sourcing up to 500µA at VCC ≥ 2.7V and sinking up to 1.2mA at VCC ≥ 2.7V - eliminating the need for an external pullup resistor.
Is the MAX6316LUK31CY-T qualified for automotive applications?
Yes, the MAX6316LUK31CY-T is AEC-Q100 qualified, as explicitly stated in the Benefits and Features section of the datasheet. It operates across the full automotive temperature range of -40°C to +125°C and meets stress testing requirements for automotive electronics.
What is the minimum supply voltage at which the MAX6316LUK31CY-T guarantees valid reset output levels?
The MAX6316LUK31CY-T guarantees valid reset output levels down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures robust reset assertion during severe brownout or battery-depletion scenarios.
MAX6316LUK31CY-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:
- 3.08V
- 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
MAX6316LUK31CY-T FAQ
1.How can I place an order for MAX6316LUK31CY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK31CY-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 MAX6316LUK31CY-T reliable?
The price and inventory of MAX6316LUK31CY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK31CY-T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK31CY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316LUK31CY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316LUK31CY-T?
MAX6316LUK31CY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK31CY-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 MAX6316LUK31CY-T?
For technical support, including MAX6316LUK31CY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK31CY-T requirements.
6.How does Aetrix verify that MAX6316LUK31CY-T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK31CY-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 MAX6316LUK31CY-T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK31CY-T?
All MAX6316LUK31CY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK31CY-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 MAX6316LUK31CY-T part is unused and in its original packaging.
Return procedure for MAX6316LUK31CY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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