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Analog Devices Inc./Maxim Integrated MAX6316MUK47AY-T
- Part No.:
- MAX6316MUK47AY-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316MUK47AY-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,223
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Product details
Overview
MAX6316MUK47AY-T from Maxim Integrated is a 5-pin SOT23 microprocessor supervisory circuit with bidirectional active-low reset output, 4.7V factory-trimmed reset threshold, 140ms minimum reset timeout, and 1.6s typical watchdog timeout. It monitors VCC supply integrity and μP activity in embedded systems requiring robust brownout detection and Motorola 68HC11-compatible reset signaling.
For engineers reviewing the MAX6316MUK47AY-T datasheet, MAX6316MUK47AY-T pinout, MAX6316MUK47AY-T application, or MAX6316MUK47AY-T equivalent, key selection criteria include bidirectional reset compatibility, guaranteed reset validity down to VCC = 1V, immunity to sub-4µs negative VCC transients, and integrated 4.7kΩ pullup + active P-channel pullup for fast RESET rise time under capacitive load.
Technical Context
The MAX6316MUK47AY-T implements a dual-stage reset generator with voltage monitoring (4.7V ±2.5% over -40°C to +125°C), manual reset input (MR), and watchdog timer (WDI) that clears on any edge. Its bidirectional RESET output combines a 4.7kΩ passive pullup resistor with an active P-channel FET enabled above 0.65V to ensure reliable low-to-high transition within two external clock cycles-even with >250pF bus capacitance.
Reset assertion occurs when VCC falls below 4.7V, MR is pulled low, or WDI remains static beyond 1.6s. After deassertion, the watchdog timer restarts from zero. The device draws only 5–12µA at 3.6V and operates across -40°C to +125°C with AEC-Q100 qualification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.70V ±2.5% (±118mV) over full temperature range - ensures precise brownout detection at nominal 4.7V rail |
| Reset Timeout Period | 140ms (min) - guarantees sufficient hold time for μP initialization after power-up or recovery |
| Watchdog Timeout | 1.6s (typ) - provides adequate window to detect μP lockup without false triggers during normal operation |
| Supply Current | 5µA (typ) at VCC = 3.6V - enables ultra-low-power operation in battery-backed systems |
| Operating Temperature | -40°C to +125°C - supports industrial and automotive under-hood applications |
| Reset Output Type | Bidirectional, active-low - directly interfaces with Motorola 68HC11 and similar μPs requiring bidirectional reset I/O |
| VCC Immunity | Valid reset assertion down to VCC = 1V - maintains system reliability during deep brownout conditions |
Pinout & Package
MAX6316MUK47AY-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 thermal resistance θJA = 255.9°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Bidirectional RESET | Active-low reset signal with integrated 4.7kΩ pullup + active P-channel FET - enables μP self-diagnostics by distinguishing internal vs. external reset sources |
| 2 | GND | Ground reference for all internal circuitry and reset timing accuracy |
| 3 | MR (Manual Reset) | Active-low input with 52kΩ internal pullup - allows external pushbutton reset without external components; rejects 100ns glitches |
| 4 | WDI (Watchdog Input) | Edge-sensitive input that clears watchdog timer on rising or falling edge - disables watchdog if left unconnected or three-stated |
| 5 | VCC | Power supply input (1.0V to 5.5V) - reset asserts when VCC drops below 4.7V threshold; valid operation guaranteed to 1V |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET with active pullup | Combines 4.7kΩ resistor and P-channel FET to achieve <666ns rise time into 400pF - solves slow-rise issues on multi-device reset buses |
| Factory-trimmed 4.7V threshold | ±2.5% tolerance over -40°C to +125°C - eliminates need for external resistor divider while meeting tight 4.7V rail monitoring requirements |
| 140ms minimum reset timeout | Guaranteed hold time independent of VCC ramp rate - ensures reliable μP boot sequence completion |
| 1.6s watchdog timeout | Typical period optimized for mid-speed μPs - balances fault detection speed against false trigger risk from software jitter |
| AEC-Q100 qualified | Qualified for automotive applications per Rev G stress testing - supports under-hood and infotainment use cases |
Applications
| Motorola 68HC11-Based Control Systems | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Microcontroller-based motor drive controller using Motorola 68HC11 with bidirectional reset pin. IC Role / Device Role / Timing Role: Supervisory IC providing bidirectional RESET signal that enables the 68HC11 to distinguish between internal watchdog resets and external power-fail resets. Use Value: Enables correct vector selection after reset - preserving state data for diagnostics when reset originates internally, while forcing cold boot on external events. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated I/O and 24V DC input. IC Role / Device Role / Timing Role: Voltage monitor and watchdog supervisor ensuring deterministic reset behavior during 24V rail fluctuations or EMI-induced μP lockup. Use Value: 4.7V threshold matches common 5V logic supply derived from 24V, and 140ms timeout accommodates slow-ramping industrial power supplies. |
| Automotive Body Control Modules | Battery-Powered Data Loggers |
Use Scenario: CAN-connected BCM managing door locks, lighting, and HVAC functions in passenger vehicles. IC Role / Device Role / Timing Role: AEC-Q100-qualified supervisory circuit monitoring 5V domain supply and detecting μP hang conditions via WDI. Use Value: Guarantees reset validity down to VCC = 1V during cranking events and withstands automotive transients per ISO 7637-2. |
Use Scenario: Portable environmental sensor node powered by Li-ion battery with 3.3V LDO regulator. IC Role / Device Role / Timing Role: Low-quiescent-current (5µA typ) supervisor enabling long-term battery life while ensuring reliable wake-from-reset behavior. Use Value: Ultra-low ICC extends operational lifetime; 1.6s watchdog timeout prevents missed sensor readings without excessive current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316MUK46CY-T | 4.63V reset threshold (vs. 4.70V); identical 140ms timeout and 1.6s watchdog | Suitable where 4.63V threshold better matches actual 5V rail tolerance stack-up | Select when tighter alignment with 4.63V nominal threshold (per Table 1) is required for margin analysis |
| MAX6318MHUK47CY-T | Same 4.7V threshold and 140ms/1.6s timing, but adds active-high push/pull RESET output | Required when host μP demands active-high reset polarity instead of bidirectional | Choose only if system architecture mandates active-high reset signaling - not pin-compatible |
Compared with MAX6316MUK47AY-T, MAX6316MUK46CY-T offers a slightly lower reset threshold for tighter 5V rail monitoring, while MAX6318MHUK47CY-T replaces bidirectional functionality with active-high push/pull output - making it suitable for different μP interface requirements but requiring PCB layout changes.
Availability
MAX6316MUK47AY-T is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and battery-powered instrumentation requiring stable component supply, AEC-Q100 compliance, and precise 4.7V supply monitoring.
Supply support for MAX6316MUK47AY-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 delivers highly integrated μP supervision with configurable reset thresholds, watchdog timers, and specialized reset outputs - engineered for reliability-critical embedded systems demanding guaranteed reset behavior across wide temperature and supply ranges.
FAQ
What is the exact reset threshold voltage for MAX6316MUK47AY-T?
The MAX6316MUK47AY-T features a factory-trimmed reset threshold of 4.70V, with guaranteed tolerance of ±2.5% (±118mV) over the full operating temperature range of -40°C to +125°C. At +25°C, the typical value is 4.70V, and the min/max limits are 4.583V and 4.818V respectively per Table 1 in the datasheet.
Does MAX6316MUK47AY-T support bidirectional reset functionality?
Yes, MAX6316MUK47AY-T provides a dedicated bidirectional, active-low RESET output (Pin 1) designed specifically for microprocessors like the Motorola 68HC11. It integrates both a 4.7kΩ pullup resistor and an active P-channel FET to ensure fast low-to-high transitions even with up to 400pF bus capacitance - enabling reliable reset source identification.
What is the watchdog timeout period for MAX6316MUK47AY-T?
The MAX6316MUK47AY-T has a typical watchdog timeout period of 1.6 seconds, corresponding to the "Y" suffix in its ordering code. This value is specified as typical across temperature and supply voltage, with min/max bounds of 1.12s and 2.4s per the Electrical Characteristics table.
Can MAX6316MUK47AY-T operate reliably during severe VCC brownout conditions?
Yes, MAX6316MUK47AY-T guarantees valid reset output behavior down to VCC = 1V, and its reset assertion remains functional even as supply voltage collapses. This ensures deterministic system behavior during deep brownouts - critical for automotive cranking and industrial power interruption scenarios.
Is MAX6316MUK47AY-T qualified for automotive applications?
Yes, MAX6316MUK47AY-T is AEC-Q100 qualified (Grade 1, -40°C to +125°C), making it suitable for automotive body control modules, infotainment systems, and other non-safety-critical vehicle electronics. Its design includes immunity to short negative VCC transients (<4µs, 100mV undershoot) per ISO 7637-2 requirements.
MAX6316MUK47AY-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:
- 4.7V
- Output:
- Bidirectional
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MAX6316MUK47AY-T FAQ
1.How can I place an order for MAX6316MUK47AY-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316MUK47AY-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 MAX6316MUK47AY-T reliable?
The price and inventory of MAX6316MUK47AY-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316MUK47AY-T is usually 5 days.
3.What payment methods are accepted for MAX6316MUK47AY-T?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316MUK47AY-T?
MAX6316MUK47AY-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316MUK47AY-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 MAX6316MUK47AY-T?
For technical support, including MAX6316MUK47AY-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316MUK47AY-T requirements.
6.How does Aetrix verify that MAX6316MUK47AY-T is sourced from the original manufacturer or authorized distributors?
All MAX6316MUK47AY-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 MAX6316MUK47AY-T meets industry standards.
7.What is the process for return or replacement of MAX6316MUK47AY-T?
All MAX6316MUK47AY-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316MUK47AY-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 MAX6316MUK47AY-T part is unused and in its original packaging.
Return procedure for MAX6316MUK47AY-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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