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Analog Devices Inc./Maxim Integrated MAX6314US30D1
- Part No.:
- MAX6314US30D1
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US30D1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,578
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Product details
Overview
MAX6314US30D1 from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit designed to monitor VCC supply voltage and assert a bidirectional reset signal for µPs with bidirectional reset I/Os (e.g., Motorola 68HC11). It features a factory-trimmed 3.00V reset threshold, 1ms minimum reset timeout period, ±1.8% threshold accuracy at +25°C, and 5µA supply current. It operates over -40°C to +85°C in portable/battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6314US30D1 datasheet, MAX6314US30D1 pinout, MAX6314US30D1 application, or MAX6314US30D1 equivalent, key selection criteria include its 3.00V VTH tolerance, SOT143 package compatibility, bidirectional RESET output architecture with integrated 4.7kΩ pullup + active P-channel transistor, and immunity to short VCC transients - all critical for robust reset signaling in multi-device reset buses.
Technical Context
The MAX6314US30D1 implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set its 3.00V reset threshold, and an internal timer that holds RESET asserted for ≥1ms after VCC rises above threshold or MR deasserts. Its bidirectional RESET output combines an N-channel pulldown, a 4.7kΩ passive pullup, and a P-channel active pullup enabled for 2µs upon rising-edge detection - enabling fast rise times (<35ns typical) even under 390pF load.
It includes a debounced manual reset input (MR) with 63kΩ internal pullup, glitch rejection of ≤100ns, and operates across VCC = 1.0V to 5.5V. The device asserts RESET for VCC > 1V and becomes high-impedance below 1V, supporting valid reset signaling down to near-ground when paired with an external pull-down resistor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 3.00V - Factory-trimmed threshold ensures precise power-fail detection at 3.0V supply rails. |
| tRP Min | 1ms - Guarantees sufficient reset assertion time for safe µP initialization after power-up or brownout recovery. |
| VTH Accuracy | ±1.8% at +25°C - Enables tight margining for 3.0V systems without external calibration. |
| ICC | 5µA - Ultra-low quiescent current extends battery life in portable applications. |
| Reset Output Type | Bidirectional with integrated 4.7kΩ pullup + active P-channel transistor - eliminates need for external pullup and supports fast rise time on shared reset buses. |
| MR Input | Logic-low active with 63kΩ internal pullup - enables momentary switch interface without external components. |
| Operating Temp | -40°C to +85°C - Qualified for industrial and automotive-adjacent embedded environments. |
Pinout & Package
SOT143 (4-pin, surface-mount) package with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage and reset threshold monitor input | Primary power rail input; internally monitored to trigger reset when falling below 3.00V. |
| MR | Manual reset input | Active-low control: logic low asserts reset; internal 63kΩ pullup allows direct switch-to-GND connection. |
| RESET | Bidirectional reset output | Combines N-channel pulldown, 4.7kΩ passive pullup, and P-channel active pullup - interfaces directly with 68HC11-style bidirectional reset pins. |
| GND | Ground reference | Return path for VCC, MR, and RESET circuits; required for accurate threshold monitoring and output drive. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.00V reset threshold | Eliminates external resistor network and calibration, reducing BOM count and layout area in 3.0V systems. |
| Bidirectional RESET with active pullup | Ensures RESET rises to 0.8×VCC within two E-clock cycles (≤500ns at 4MHz), even with ≥3 devices on bus and 390pF total capacitance. |
| 1ms minimum reset timeout | Meets JEDEC JESD84-B51 requirements for NAND flash controller reset hold time and avoids premature µP release. |
| 5µA supply current | Enables >10-year battery life in coin-cell–powered IoT sensors using 220mAh CR2032 cells. |
| Immunity to ≤100ns VCC transients | Prevents false resets during digital switching noise or ESD-induced supply dips without requiring additional filtering capacitors. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG patch monitors heart rate continuously on a single CR2032 cell. IC Role / Device Role / Timing Role: MAX6314US30D1 monitors 3.0V regulated supply and asserts reset if voltage sags below 3.00V due to battery depletion or load surge. Use Value: 5µA quiescent current extends operational life; 1ms timeout ensures reliable BLE SoC initialization before data transmission begins. |
Use Scenario: DIN-rail mounted PLC module powers field I/O via isolated 3.3V DC-DC converter. IC Role / Device Role / Timing Role: MAX6314US30D1 supervises the 3.3V rail and provides clean reset to ARM Cortex-M4 MCU during line transients or hot-swap events. Use Value: Bidirectional RESET output prevents bus contention with other supervisors; ±1.8% VTH accuracy ensures deterministic reset at 3.00V without derating. |
| Smart Meter Communication Units | Automotive Body Control Modules (BCM) |
Use Scenario: NB-IoT communication module in electricity meter wakes periodically to transmit consumption data. IC Role / Device Role / Timing Role: MAX6314US30D1 holds reset during cold-start until 3.0V rail stabilizes, then releases after 1ms to enable secure boot sequence. Use Value: Immunity to ≤100ns supply glitches avoids spurious resets during RF transmission bursts; SOT143 footprint saves PCB area in sealed meter housing. |
Use Scenario: BCM controls door locks, lighting, and window motors using a 3.3V domain powered from vehicle battery via LDO. IC Role / Device Role / Timing Role: MAX6314US30D1 detects battery undervoltage (e.g., during cranking) and forces MCU reset to prevent corrupted EEPROM writes. Use Value: -40°C to +85°C rating ensures operation across engine bay temperature extremes; MR pin enables service-mode reset via diagnostic tool. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US30D1-T | Open-drain RESET output (no internal pullup); identical 3.00V VTH, 1ms tRP, and SOT143 package. | Requires external 4.7kΩ pullup resistor; unsuitable for bidirectional reset buses where µP must drive RESET low. | Select only when interfacing with µPs having unidirectional open-drain reset inputs (e.g., many ARM Cortex-M series). |
| TPS3808G30DBVR | Push-pull RESET output; 3.0V VTH with ±0.5% initial accuracy; 2.5µA ICC; same SOT-23-5 package but different pinout. | Lacks bidirectional capability and MR debounce; requires PCB redesign due to non-pin-compatible layout and extra GND pin. | Choose for ultra-low-current, high-accuracy 3.0V supervision where bidirectional reset is not required and layout revision is acceptable. |
Compared with MAX6314US30D1, MAX6315US30D1-T lacks the integrated pullup and active transistor, making it incompatible with 68HC11-style bidirectional reset schemes; TPS3808G30DBVR offers tighter threshold accuracy and lower current but demands board-level changes and cannot support manual reset-driven system recovery without added logic.
Availability
MAX6314US30D1 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart meter communication units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6314US30D1 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) is a semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX6314 family was designed specifically for microprocessor reset supervision in space- and power-constrained systems, emphasizing precision threshold accuracy, ultra-low current, and seamless integration with bidirectional reset architectures like the 68HC11.
FAQ
What is the exact reset threshold voltage of the MAX6314US30D1?
The MAX6314US30D1 has a factory-trimmed nominal reset threshold voltage of 3.00V, with ±1.8% accuracy at +25°C and ±2.5% over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and confirmed in the Electrical Characteristics table of the official datasheet.
Does the MAX6314US30D1 require an external pullup resistor on the RESET pin?
No, the MAX6314US30D1 does not require an external pullup resistor. It integrates a 4.7kΩ passive pullup resistor in parallel with an active P-channel transistor on the RESET pin, enabling direct interface with bidirectional reset inputs like those on the Motorola 68HC11 without additional components.
What is the minimum reset timeout period for the MAX6314US30D1?
MAX6314US30D1 has a minimum reset timeout period (tRP) of 1ms. This is the shortest guaranteed duration that RESET remains asserted after VCC rises above 3.00V or after the MR input is deasserted, ensuring reliable µP initialization in fast-boot systems.
Can the MAX6314US30D1 be used with microprocessors other than the 68HC11?
Yes, the MAX6314US30D1 is compatible with any microprocessor or microcontroller featuring a bidirectional reset I/O pin that accepts an active-low signal with internal pullup - including derivatives of the 68HC11 family and other legacy µPs requiring similar reset bus arbitration behavior.
Is the MR (manual reset) input of the MAX6314US30D1 debounced internally?
Yes, the MR input of the MAX6314US30D1 includes internal debounce circuitry with 100ns glitch rejection, allowing direct connection of a momentary switch to GND without external RC filters. Its 63kΩ internal pullup resistor further simplifies implementation in battery-powered systems.
MAX6314US30D1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Bidirectional
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6314US30D1 FAQ
1.How can I place an order for MAX6314US30D1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US30D1 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 MAX6314US30D1 reliable?
The price and inventory of MAX6314US30D1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US30D1 is usually 5 days.
3.What payment methods are accepted for MAX6314US30D1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US30D1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US30D1?
MAX6314US30D1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US30D1 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 MAX6314US30D1?
For technical support, including MAX6314US30D1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US30D1 requirements.
6.How does Aetrix verify that MAX6314US30D1 is sourced from the original manufacturer or authorized distributors?
All MAX6314US30D1 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 MAX6314US30D1 meets industry standards.
7.What is the process for return or replacement of MAX6314US30D1?
All MAX6314US30D1 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US30D1, 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 MAX6314US30D1 part is unused and in its original packaging.
Return procedure for MAX6314US30D1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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