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Analog Devices Inc./Maxim Integrated MAX6316MUK46CY-T
- Part No.:
- MAX6316MUK46CY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316MUK46CY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
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Product details
Overview
MAX6316MUK46CY-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with bidirectional active-low reset output, 4.63V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply and μP activity in embedded systems requiring robust brownout detection and Motorola 68HC11-compatible reset signaling.
For engineers reviewing the MAX6316MUK46CY-T datasheet, MAX6316MUK46CY-T pinout, MAX6316MUK46CY-T application, or MAX6316MUK46CY-T equivalent, key selection criteria include bidirectional reset compatibility, guaranteed reset validity down to VCC = 1V, immunity to short negative VCC transients, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6316MUK46CY-T implements a dual-stage reset generator with factory-trimmed 4.63V threshold (±2.5% over -40°C to +125°C) and 140ms minimum active-reset duration. Its bidirectional RESET output integrates a 4.7kΩ pullup resistor and active P-channel pullup FET to ensure sub-500ns rise time under 200pF load-critical for Motorola 68HC11 reset handshaking.
Watchdog functionality uses an internal timer cleared by WDI transitions (rising/falling edges ≥50ns), with 1.6s typical timeout (±50% over temperature). Manual reset (MR) input features 52kΩ internal pullup, 100ns glitch rejection, and 1.5µs minimum pulse width at full temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% (–40°C to +125°C); ensures reliable brownout detection for 4.5V nominal supplies |
| Reset Timeout | 140ms minimum; guarantees sufficient hold time for μP initialization after power-up or recovery |
| Watchdog Timeout | 1.6s typical; provides adequate window to detect software hangs in real-time control loops |
| Supply Current | 5µA typical at 3.6V; enables ultra-low-power operation in battery-backed systems |
| Operating Temp | –40°C to +125°C; supports industrial and automotive under-hood applications |
| Reset Output Type | Bidirectional active-low; interfaces directly with Motorola 68HC11 and similar μPs without external pullup |
| AEC-Q100 Grade | Qualified; meets automotive reliability standards for mission-critical reset supervision |
Pinout & Package
MAX6316MUK46CY-T is housed in a 5-pin SOT23 package (package code U5+2A, outline 21-0057), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Bidirectional active-low reset output; sinks current when asserted, pulls up actively via internal 4.7kΩ + P-FET when released |
| 2 | GND | Ground reference; must be connected to system ground plane for stable reset threshold and noise immunity |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 52kΩ; asserts reset when pulled below 0.3×VCC |
| 4 | WDI | Watchdog input; requires edge transitions every 1.6s; left unconnected to disable watchdog function |
| 5 | VCC | Supply voltage input; operates from 1.0V to 5.5V; reset asserted when VCC falls below 4.63V |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET with active pullup | Enables Motorola 68HC11-compatible reset handshaking without external components or timing margin loss |
| Guaranteed reset validity to VCC = 1V | Ensures deterministic reset behavior during deep brownout conditions where other supervisors fail |
| Immunity to short negative VCC transients | Rejects ≤4µs, 100mV-under-threshold glitches-eliminates false resets in noisy power environments |
| No external components required | Reduces BOM count and PCB area; eliminates risk of capacitor aging or resistor drift affecting reset timing |
| AEC-Q100 qualified | Validated for automotive applications including engine control, body electronics, and ADAS subsystems |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Supervises power and software execution in programmable logic controllers operating in factory-floor environments with wide temperature swings and EMI. IC Role / Device Role / Timing Role: Provides bidirectional reset handshake to ARM Cortex-M7-based controller and triggers watchdog reset if firmware stalls during I/O scanning. Use Value: Prevents undetected lockups in safety-critical control loops; 140ms reset timeout aligns with PLC boot sequence timing requirements. | Use Scenario: Monitors 5V supply rail and MCU activity in door module ECUs exposed to automotive load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Asserts reset during VCC dip below 4.63V during cranking; bidirectional output allows ECU to distinguish self-initiated vs. supervisor-initiated reset events. Use Value: Enables fault-logging based on reset source; AEC-Q100 qualification ensures operation across –40°C to +125°C junction temperature range. |
| Medical Infusion Pumps | Smart Energy Meters |
Use Scenario: Ensures safe restart after power interruption in battery-powered infusion pumps delivering precise drug dosages. IC Role / Device Role / Timing Role: Generates clean, glitch-free reset signal to safety-certified MCU; watchdog monitors motor control firmware execution. Use Value: 5µA supply current extends battery life; 1.6s watchdog timeout balances responsiveness with avoidance of nuisance resets during transient faults. | Use Scenario: Supervises metrology SoC and communication processor in utility-grade electricity meters deployed in outdoor enclosures. IC Role / Device Role / Timing Role: Detects brownout on 3.3V rail during grid instability; MR input enables remote reset via optical port command. Use Value: Factory-trimmed 4.63V threshold matches meter's regulated supply tolerance; 100ns MR glitch rejection prevents false resets from optical noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316LUK46CY-T | Active-low push/pull reset output (no bidirectional capability); identical reset threshold, timeout, and watchdog specs | Requires external pullup for μPs needing bidirectional reset signaling; unsuitable for Motorola 68HC11 interface | Select when system uses standard CMOS reset inputs and does not require μP-originated reset detection |
| TLV809E46DBZR | Single-function reset IC with 4.63V threshold and 140ms timeout; no watchdog or manual reset; SOT23-3 package | Lacks WDI/MR pins and bidirectional output; only provides basic power-on reset supervision | Select for cost-sensitive, space-constrained designs where watchdog and manual reset are unnecessary |
Compared with MAX6316LUK46CY-T and TLV809E46DBZR, the MAX6316MUK46CY-T uniquely delivers bidirectional reset capability essential for Motorola 68HC11 compatibility, while retaining full watchdog and manual reset functionality in the same compact SOT23-5 footprint.
Availability
MAX6316MUK46CY-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and medical infusion pumps requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant reset supervision.
Supply support for MAX6316MUK46CY-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, automotive, and communications applications.
The MAX6316–MAX6322 family was engineered specifically for microprocessor reset supervision in harsh environments, combining factory-trimmed thresholds, multiple timeout options, and specialized output architectures-including bidirectional reset-for legacy and modern μP interfaces.
FAQ
What is the exact reset threshold voltage of MAX6316MUK46CY-T and how tightly is it specified?
The MAX6316MUK46CY-T has a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±1.5% at +25°C and ±2.5% over the full operating temperature range of –40°C to +125°C. This specification ensures reliable detection of brownout conditions on 4.5V nominal supply rails without false triggering during normal operation.
Does MAX6316MUK46CY-T support bidirectional reset signaling, and which microprocessors is it compatible with?
Yes, MAX6316MUK46CY-T features a dedicated bidirectional active-low reset output designed explicitly for microprocessors with bidirectional reset pins such as the Motorola 68HC11. Its integrated 4.7kΩ pullup resistor and active P-channel pullup enable fast, deterministic low-to-high transitions-even with 200pF bus capacitance-ensuring correct reset source identification per 68HC11 protocol.
What is the watchdog timeout period of MAX6316MUK46CY-T, and how is it triggered?
The MAX6316MUK46CY-T provides a typical watchdog timeout period of 1.6 seconds. It is triggered when the WDI input remains static (neither rising nor falling edge) for the full timeout duration. The internal timer clears on any WDI transition ≥50ns, allowing flexible software implementation-such as toggling WDI at loop exits-to detect infinite loops or stalled execution.
Can MAX6316MUK46CY-T operate reliably during severe supply voltage transients?
Yes, MAX6316MUK46CY-T is immune to short negative-going VCC transients: it will not assert reset for pulses ≤4µs duration that dip up to 100mV below the 4.63V threshold. This robustness is validated per design and enables reliable operation in electrically noisy environments like automotive and industrial settings without requiring additional filtering.
Is MAX6316MUK46CY-T qualified for automotive applications, and what certification does it hold?
Yes, MAX6316MUK46CY-T is AEC-Q100 qualified, meeting the stress test requirements for Grade 1 (–40°C to +125°C) operation. This qualification confirms its suitability for automotive body electronics, infotainment, and ADAS subsystems where reset integrity directly impacts functional safety and system reliability.
MAX6316MUK46CY-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:
- Bidirectional
- 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
MAX6316MUK46CY-T FAQ
1.How can I place an order for MAX6316MUK46CY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316MUK46CY-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 MAX6316MUK46CY-T reliable?
The price and inventory of MAX6316MUK46CY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316MUK46CY-T is usually 5 days.
3.What payment methods are accepted for MAX6316MUK46CY-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316MUK46CY-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316MUK46CY-T?
MAX6316MUK46CY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316MUK46CY-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 MAX6316MUK46CY-T?
For technical support, including MAX6316MUK46CY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316MUK46CY-T requirements.
6.How does Aetrix verify that MAX6316MUK46CY-T is sourced from the original manufacturer or authorized distributors?
All MAX6316MUK46CY-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 MAX6316MUK46CY-T meets industry standards.
7.What is the process for return or replacement of MAX6316MUK46CY-T?
All MAX6316MUK46CY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316MUK46CY-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 MAX6316MUK46CY-T part is unused and in its original packaging.
Return procedure for MAX6316MUK46CY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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