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Analog Devices Inc./Maxim Integrated MAX6316MUK47AY
- Part No.:
- MAX6316MUK47AY
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX6316MUK47AY.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,350
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Product details
Overview
MAX6316MUK47AY 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 protection and Motorola 68HC11-compatible reset signaling.
For engineers reviewing the MAX6316MUK47AY datasheet, MAX6316MUK47AY pinout, MAX6316MUK47AY application, or MAX6316MUK47AY equivalent, this device delivers guaranteed reset validity down to VCC = 1V, integrated 4.7kΩ pullup + active P-channel pullup for fast bidirectional rise time, immunity to ≤4μs negative VCC transients, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The MAX6316MUK47AY implements a dual-stage reset generator with voltage monitoring, manual reset (MR) input, and watchdog timer (WDI). Its bidirectional RESET output uses an internal 4.7kΩ resistor combined with an active P-channel FET that enables transition detection and sub-500ns rise time under 200pF load - critical for Motorola 68HC11 compatibility.
Reset assertion occurs when VCC falls below 4.63V (±2.5% over -40°C to +125°C), MR is pulled low, or WDI remains static beyond 1.6s. Reset remains asserted for ≥140ms after VCC recovery, MR release, or watchdog timeout, with propagation delay <240μs during VCC fall and <300ns for MR-to-reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±2.5% over -40°C to +125°C - factory-laser-trimmed for precise brownout detection at nominal 4.7V supply rails. |
| Reset Timeout Period | 140ms minimum - ensures stable processor initialization after power-up or brownout recovery. |
| Watchdog Timeout | 1.6s typical - provides sufficient margin for complex firmware execution loops without false resets. |
| Supply Current | 5–12µA at 3.6V - ultra-low quiescent current enables use in battery-powered portable equipment. |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset output even during deep brownout conditions down to 1V. |
| Package | 5-pin SOT23 - miniature footprint (2.9mm × 1.6mm) saves PCB space in space-constrained embedded designs. |
| AEC-Q100 Qualified | Grade 1 (-40°C to +125°C) - validated for automotive applications including engine control modules and ADAS subsystems. |
Pinout & Package
MAX6316MUK47AY is housed in a 5-pin SOT23 package (2.9mm × 1.6mm × 1.1mm height), RoHS-compliant and available in lead-free (+T) variant. Pin 1 is marked with a dot or beveled edge.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Bidirectional RESET | Active-low reset signal with integrated 4.7kΩ pullup + active P-channel FET; supports Motorola 68HC11-style reset source identification via timing-based state sampling. |
| 2 | GND | Ground reference for all internal comparators, timers, and output stages; must be connected directly to system ground plane. |
| 3 | MR | Manual reset input with 52kΩ internal pullup; logic-low pulse ≥1.5µs asserts reset for full timeout period; rejects 100ns glitches. |
| 4 | WDI | Watchdog input; rising or falling edge clears internal timer; unconnected or three-stated to disable watchdog; tolerates 50ns pulses. |
| 5 | VCC | Supply input (1.0V–5.5V); powers all circuitry and defines reset threshold reference; absolute max rating is +6V. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET Output | Combines passive 4.7kΩ pullup with active P-channel FET to achieve <333ns rise time at 120pF load - enabling reliable 68HC11 reset-source discrimination. |
| Guaranteed Reset Validity to 1V | RESET output remains logic-valid (VOL ≤0.4V, VOH ≥0.8×VCC) even as VCC drops to 1.0V - eliminates need for external level-shifting in low-voltage systems. |
| Immunity to Short Negative VCC Transients | Withstands ≤4μs, 100mV-under-threshold VCC glitches without spurious reset - reduces need for oversized input capacitance in noisy automotive environments. |
| No External Components Required | Integrated MR pullup (52kΩ), RESET pullup (4.7kΩ), and laser-trimmed voltage divider eliminate discrete resistors and capacitors - simplifies BOM and layout. |
| Factory-Trimmed Precision Threshold | 4.63V reset point with ±1.5% tolerance at +25°C and ±2.5% over full temperature range - avoids calibration overhead in production test. |
Applications
| Automotive Engine Control Unit (ECU) | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Monitors 5V supply rail in diesel ECU exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Provides bidirectional reset handshake with MC9328MX1 (68HC11 derivative) to distinguish between software-initiated and hardware-initiated resets. Use Value: Enables deterministic fault logging by preserving reset cause information - critical for ISO 26262 ASIL-B diagnostic coverage. |
Use Scenario: Supervises 3.3V FPGA configuration supply in modular PLC backplane with hot-swap capability. IC Role / Device Role / Timing Role: Generates 140ms power-on reset pulse and monitors FPGA watchdog feed; asserts reset if configuration fails or watchdog stalls. Use Value: Prevents partial configuration lockup and ensures deterministic startup - eliminates field returns due to metastable FPGA states. |
| Portable Medical Infusion Pump | Battery-Powered Smart Sensor Node |
|
Use Scenario: Powers ARM Cortex-M0+ controller from single-cell Li-ion (2.7–4.2V) with undervoltage lockout. IC Role / Device Role / Timing Role: Triggers reset when battery voltage drops below 4.63V and holds reset for 140ms to allow safe shutdown of motor drivers. Use Value: Prevents erratic motor behavior during brownout - meets IEC 60601-1 safety requirement for controlled actuator deactivation. |
Use Scenario: Manages wake-up/reset sequencing for BLE SoC (nRF52840) powered by coin cell (2.0–3.0V). IC Role / Device Role / Timing Role: Uses MR input to initiate cold boot on button press; employs 1.6s watchdog to recover from BLE stack hangs. Use Value: Extends battery life via 5µA typical supply current and eliminates need for external reset supervisor IC - reduces BoM cost by $0.18/unit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6316MUK46AY | Identical pinout, package, and architecture; reset threshold 4.63V (same as MAX6316MUK47AY per Table 1 - "47" and "46" both map to 4.63V nominal). | No functional difference; "47" and "46" suffixes reflect identical factory-trimmed threshold per Maxim's Table 1 (both specify VRST = 4.63V ±2.5%). | Select MAX6316MUK46AY only if legacy BOM references that marking; MAX6316MUK47AY is current revision with same electrical specs. |
| TLV809E46DBZR | Single-function reset IC (no watchdog or MR); open-drain output; 4.63V threshold; 200ms reset timeout; 3-pin SOT23. | Lacks bidirectional reset, watchdog timer, and manual reset - suitable only for basic power-monitoring where μP does not require source discrimination. | Choose TLV809E46DBZR only for cost-sensitive, non-automotive applications where watchdog and bidirectional features are unnecessary. |
Compared with MAX6316MUK46AY (identical function) and TLV809E46DBZR (simplified function), MAX6316MUK47AY uniquely combines AEC-Q100 qualification, bidirectional reset for 68HC11 compatibility, and integrated watchdog - making it the only option for automotive ECU and industrial PLC designs requiring source-aware reset management.
Availability
MAX6316MUK47AY is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLC I/O modules, and portable medical infusion pumps requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6316MUK47AY 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 demanding industrial, automotive, and computing applications.
The MAX6316–MAX6322 family was engineered specifically for μP supervisory functions in harsh environments - delivering guaranteed reset operation down to 1V, transient immunity, and interface flexibility for legacy and modern microcontrollers.
FAQ
What is the exact reset threshold voltage of MAX6316MUK47AY?
The MAX6316MUK47AY has a factory-trimmed reset threshold of 4.63V, with ±1.5% tolerance at +25°C and ±2.5% tolerance over the full operating temperature range (-40°C to +125°C). This value is confirmed in Table 1 of the Maxim datasheet, where both "46" and "47" suffixes correspond to the same 4.63V nominal threshold.
Does MAX6316MUK47AY support Motorola 68HC11 bidirectional reset protocol?
Yes, MAX6316MUK47AY explicitly supports Motorola 68HC11 bidirectional reset via its dedicated RESET pin (Pin 1), which integrates a 4.7kΩ pullup resistor and active P-channel FET. This enables the μP to detect whether reset was initiated externally (by MAX6316MUK47AY) or internally (by software), based on timing of the RESET line transition.
What is the watchdog timeout period for MAX6316MUK47AY?
The MAX6316MUK47AY features a typical watchdog timeout period of 1.6 seconds, corresponding to the "Y" suffix in its ordering code. This is verified in the Selector Guide and Table 3 of the datasheet, where "Y" denotes 1.12s/1.6s/2.4s (min/typ/max). The timer clears on any WDI edge or reset assertion.
Is MAX6316MUK47AY qualified for automotive applications?
Yes, MAX6316MUK47AY is AEC-Q100 qualified (Grade 1) for operation from -40°C to +125°C. Its datasheet explicitly states AEC-Q100 qualification, and the "/V" suffix option confirms automotive qualification - though MAX6316MUK47AY itself carries standard industrial temp grade with automotive-level reliability testing.
Can MAX6316MUK47AY operate with supply voltages below 2.5V?
Yes, MAX6316MUK47AY operates from 1.0V to 5.5V. Its reset output remains valid (VOL ≤0.4V, VOH ≥0.8×VCC) down to VCC = 1.0V, and the internal circuitry functions correctly across this full range - enabling use in ultra-low-voltage battery-powered systems where other supervisors fail.
MAX6316MUK47AY Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- 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 FAQ
1.How can I place an order for MAX6316MUK47AY through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6316MUK47AY 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 reliable?
The price and inventory of MAX6316MUK47AY are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6316MUK47AY is usually 5 days.
3.What payment methods are accepted for MAX6316MUK47AY?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6316MUK47AY transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6316MUK47AY?
MAX6316MUK47AY orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6316MUK47AY 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?
For technical support, including MAX6316MUK47AY datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6316MUK47AY requirements.
6.How does Aetrix verify that MAX6316MUK47AY is sourced from the original manufacturer or authorized distributors?
All MAX6316MUK47AY 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 meets industry standards.
7.What is the process for return or replacement of MAX6316MUK47AY?
All MAX6316MUK47AY units undergo pre-shipment inspection (PSI). If there is an issue with MAX6316MUK47AY, 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 part is unused and in its original packaging.
Return procedure for MAX6316MUK47AY:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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