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Analog Devices Inc./Maxim Integrated MAX6316LUK46CZ+T
- Part No.:
- MAX6316LUK46CZ+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316LUK46CZ+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,783
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Product details
Overview
The MAX6316LUK46CZ+T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with active-low push/pull reset output, 4.63V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply voltage, provides manual reset input (MR), and asserts reset during power-up, brownout, or software hang conditions in embedded control systems.
For engineers reviewing the MAX6316LUK46CZ+T datasheet, MAX6316LUK46CZ+T pinout, MAX6316LUK46CZ+T application, or MAX6316LUK46CZ+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, and AEC-Q100 qualification for automotive-adjacent industrial use.
Technical Context
The MAX6316LUK46CZ+T implements a precision bandgap-based reset generator with factory-laser-trimmed voltage divider setting VRST = 4.63V ±2.5% over -40°C to +125°C. Its internal watchdog timer clears on any WDI edge and times out after 1.6s if unserviced, while the reset generator holds RESET low for ≥140ms after VCC rises above VRST.
This variant belongs to the MAX6316L subfamily: it features active-low push/pull RESET (capable of sourcing/sinking current), MR input with 52kΩ internal pullup, and WDI input compatible with µP toggling at ≥50ns pulse width. It does not support bidirectional or open-drain reset outputs - only push/pull active-low configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% over -40°C to +125°C - ensures reliable detection of 5V rail brownout before system instability |
| Reset Timeout Period | 140ms minimum - guarantees sufficient hold time for µP initialization and peripheral settling |
| Watchdog Timeout | 1.6s typical - enables robust software execution monitoring without excessive false triggers |
| Supply Current | 5µA typical at VCC = 3.6V - supports ultra-low-power battery-backed operation |
| Operating Voltage Range | 1.0V to 5.5V - allows valid reset assertion even during deep brownout down to 1V |
| Reset Output Type | Active-low push/pull - drives RESET directly without external pullup; sinks 1.2mA @ 2.7V, sources 500µA @ 2.7V |
| Package | SOT23-5 (U5+2A) - 2.9mm × 1.6mm footprint with thermal resistance θJA = 255.9°C/W (multi-layer board) |
Pinout & Package
MAX6316LUK46CZ+T is housed in a RoHS-compliant, lead-free 5-pin SOT23 package (outline 21-0057, land pattern 90-0174), optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push/pull reset output - asserts logic low during fault; guaranteed valid down to VCC = 1V |
| 2 | GND | Ground reference - common return path for all internal circuits and reset assertion |
| 3 | MR | Active-low manual reset input - pulled high internally via 52kΩ; debounced by 100ns glitch rejection |
| 4 | WDI | Watchdog input - edge-sensitive; resets internal timer on rising/falling transition; disables when left floating |
| 5 | VCC | Supply voltage input - monitored for brownout; absolute max rating -0.3V to +6V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±2.5% tolerance over full temperature range - eliminates external resistor network and calibration effort |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during deep undervoltage events where most supervisors fail |
| Immunity to short VCC transients | Rejects <4µs negative glitches at 100mV below VRST - prevents spurious resets in noisy power environments |
| No external components required | Integrates pullup on MR, precision voltage reference, watchdog timer, and reset generator - reduces BOM count and layout area |
| AEC-Q100 qualified | Validated for automotive-grade reliability (Grade 2: -40°C to +105°C ambient) - suitable for industrial and transportation applications |
Applications
| Industrial PLC Controller | Medical Infusion Pump |
|---|---|
Use Scenario: Real-time control loop monitoring with safety-critical timing constraints and battery backup. IC Role / Device Role / Timing Role: Supervises 3.3V/5V rails and asserts reset if µP hangs or supply drops below 4.63V; provides 140ms reset hold for EEPROM write completion. Use Value: Prevents corrupted therapy delivery by ensuring deterministic restart after brownout or software lockup. |
Use Scenario: Portable, battery-powered device requiring ultra-low quiescent current and fail-safe reset during low-VCC conditions. IC Role / Device Role / Timing Role: Monitors main 5V rail and asserts active-low RESET to ARM Cortex-M0; watchdog timeout (1.6s) detects firmware stalls during motor control sequences. Use Value: Enables compliance with IEC 62304 Class C software safety requirements through hardware-enforced recovery. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Under-hood electronics exposed to wide temperature swings (-40°C to +105°C) and load-dump transients. IC Role / Device Role / Timing Role: Provides AEC-Q100-compliant supervision of MCU supply; MR input accepts switch closure for service-mode reset; WDI toggled by firmware heartbeat. Use Value: Eliminates need for discrete RC reset circuits while meeting ISO 16750-2 electrical stress immunity requirements. |
Use Scenario: Revenue-grade meter with tamper detection, secure boot, and long-term field deployment (>10 years). IC Role / Device Role / Timing Role: Guarantees clean reset during AC line dropout or capacitor discharge; 4.63V threshold matches 5V LDO output; 140ms timeout accommodates flash programming cycles. Use Value: Ensures meter firmware integrity across power interruptions without external supervision components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK46DZ+T | Same 4.63V threshold and 140ms reset timeout, but 25.6s watchdog period instead of 1.6s | Suitable for slower-firmware systems where longer watchdog window is acceptable | Select when extended watchdog interval improves robustness against transient software delays |
| TLV803EB46DBZR | 4.63V reset threshold, no watchdog or MR input; 200ms reset timeout; SOT23-3 package | Limited to basic power-on reset only - lacks supervision of software execution or manual intervention | Choose only if watchdog and manual reset functions are unnecessary and board space is extremely constrained |
Compared with MAX6316LUK46CZ+T, the MAX6316LUK46DZ+T offers longer watchdog coverage at identical reset behavior, while TLV803EB46DBZR sacrifices supervision features for minimal footprint - making MAX6316LUK46CZ+T optimal for balanced functionality in space-aware industrial designs.
Availability
MAX6316LUK46CZ+T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive body control modules, smart energy meters, and portable/battery-powered equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6316LUK46CZ+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, medical, automotive, and communications applications.
The MAX6316–MAX6322 family delivers highly integrated µP supervisory circuits with factory-trimmed thresholds, configurable reset/watchdog timing, and multiple output types - engineered specifically for reliability-critical embedded systems demanding zero external components.
FAQ
What is the exact reset threshold voltage of the MAX6316LUK46CZ+T?
The MAX6316LUK46CZ+T has a factory-trimmed nominal reset threshold of 4.63V, specified as 4.514V to 4.746V 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 "46" in the part number directly encodes this 4.63V threshold.
Does the MAX6316LUK46CZ+T support bidirectional reset functionality?
No, the MAX6316LUK46CZ+T does not support bidirectional reset. It belongs to the MAX6316L subfamily and features an active-low push/pull RESET output only. Bidirectional reset is exclusive to MAX6316M/MAX6318MH/MAX6319MH variants. Using MAX6316LUK46CZ+T with a Motorola 68HC11 or similar bidirectional-reset µP requires external circuitry to emulate bidirectional behavior.
What is the watchdog timeout period for the MAX6316LUK46CZ+T?
The MAX6316LUK46CZ+T has a typical watchdog timeout period of 1.6 seconds, corresponding to the "Y" suffix in its internal configuration (as defined in Table 3 of the datasheet). This value is guaranteed over temperature and process variation, with min/max bounds of 1.12s and 2.4s respectively. The watchdog timer resets on any edge at the WDI pin.
Can the MAX6316LUK46CZ+T operate reliably below 2.5V supply voltage?
Yes, the MAX6316LUK46CZ+T guarantees valid reset output down to VCC = 1.0V, per Absolute Maximum Ratings and Electrical Characteristics. While its specified operating voltage range is 1.0V to 5.5V, reset assertion remains functional and electrically compliant even during deep brownout conditions where many competing supervisors cease operation.
Is the MAX6316LUK46CZ+T pin-compatible with other MAX6316 variants?
No - pin compatibility is not guaranteed across MAX6316 variants. Although all share the SOT23-5 package, function mapping differs: MAX6316LUK46CZ+T uses Pin 1 for active-low push/pull RESET, whereas MAX6316M variants assign Pin 1 to bidirectional RESET and MAX6320P variants use Pin 1 for open-drain RESET. Substituting variants without verifying pin function alignment risks incorrect reset signaling.
MAX6316LUK46CZ+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:
- 4.63V
- 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
MAX6316LUK46CZ+T FAQ
1.How can I place an order for MAX6316LUK46CZ+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316LUK46CZ+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 MAX6316LUK46CZ+T reliable?
The price and inventory of MAX6316LUK46CZ+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316LUK46CZ+T is usually 5 days.
3.What payment methods are accepted for MAX6316LUK46CZ+T?
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4.How is shipping managed for MAX6316LUK46CZ+T?
MAX6316LUK46CZ+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316LUK46CZ+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 MAX6316LUK46CZ+T?
For technical support, including MAX6316LUK46CZ+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316LUK46CZ+T requirements.
6.How does Aetrix verify that MAX6316LUK46CZ+T is sourced from the original manufacturer or authorized distributors?
All MAX6316LUK46CZ+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 MAX6316LUK46CZ+T meets industry standards.
7.What is the process for return or replacement of MAX6316LUK46CZ+T?
All MAX6316LUK46CZ+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316LUK46CZ+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 MAX6316LUK46CZ+T part is unused and in its original packaging.
Return procedure for MAX6316LUK46CZ+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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