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Analog Devices Inc./Maxim Integrated MAX6314US46D3+T
- Part No.:
- MAX6314US46D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US46D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:8,644
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Product details
Overview
MAX6314US46D3+T 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 compatible reset I/Os (e.g., Motorola 68HC11). It features a factory-trimmed 4.63V reset threshold, 140ms minimum reset timeout period, ±1.8% threshold accuracy at +25°C, 5µA supply current, and SOT143 package. Used in portable/battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6314US46D3+T datasheet, MAX6314US46D3+T pinout, MAX6314US46D3+T application, or MAX6314US46D3+T equivalent, key selection criteria include bidirectional RESET compatibility, precise 4.63V VTH, 140ms tRP, immunity to short VCC transients, and absence of external components for manual reset debounce.
Technical Context
The MAX6314US46D3+T integrates a precision voltage comparator with laser-trimmed resistors to monitor VCC against a fixed 4.63V threshold and an internal one-shot timer that enforces a minimum 140ms reset assertion after VCC recovery or MR deassertion. Its RESET output combines a 4.7kΩ passive pullup with a p-channel active pullup transistor to meet timing requirements of fast µPs with bidirectional reset pins.
MR input includes a 63kΩ internal pullup and accepts logic-low manual reset pulses without external debounce; the device remains functional across -40°C to +85°C and supports VCC operation from 1.0V to 5.5V, with guaranteed RESET sink capability down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.63V - Factory-trimmed threshold ensures accurate power-fail detection for 5V systems with margin. |
| tRP Min | 140ms - Guarantees sufficient reset hold time for full µP initialization and peripheral stabilization. |
| Reset Accuracy | ±1.8% at +25°C - Enables stable reset assertion without calibration or trimming in production. |
| ICC | 5µA - Ultra-low quiescent current extends battery life in portable applications. |
| VCC Range | 1.0V to 5.5V - Supports operation during deep brownout and compatibility with diverse supply rails. |
| MR Input | 63kΩ internal pullup - Eliminates need for external resistor; enables direct switch-to-GND connection. |
| RESET Output | Bidirectional with 4.7kΩ + p-channel pullup - Ensures <2 E-clock rise time even with multiple devices on shared reset bus. |
Pinout & Package
SOT143 package: 4-pin surface-mount, 1.3mm × 2.9mm footprint, lead-free (RoHS-compliant) variant indicated by "+T" suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage and reset threshold monitor input | Primary power rail input; internally divided to compare against 4.63V reference. |
| MR | Manual reset input | Active-low control: logic low asserts reset; internal 63kΩ pullup allows NC or switch-to-GND use. |
| RESET | Active-low bidirectional reset output | Combines n-channel pulldown + p-channel active pullup + 4.7kΩ resistor for µP-compatible timing. |
| GND | Ground reference | Return path for all internal circuitry and reset current sinking. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET interface | Enables direct connection to 68HC11 and similar µPs without level-shifting or external logic. |
| Factory-trimmed 4.63V threshold | Eliminates external resistor network; guarantees VTH tolerance without post-manufacture calibration. |
| 140ms reset timeout | Meets µP boot-time requirements for complex firmware and memory initialization sequences. |
| 5µA supply current | Reduces standby power draw in always-on battery-backed systems such as smart sensors and IoT edge nodes. |
| Immunity to short VCC transients | Rejects sub-100ns glitches up to 100mV below VTH, preventing spurious resets in noisy environments. |
Applications
| Portable Medical Monitors | Industrial PLC Controllers |
|---|---|
Use Scenario: Battery-powered ECG or glucose meter operating from single Li-ion cell with dynamic load-induced voltage sags. IC Role / Device Role / Timing Role: Supervises VCC to detect brownout during RF transmission bursts and asserts RESET until stable supply resumes. Use Value: Prevents corrupted sensor data logging and firmware crashes by enforcing 140ms reset hold after voltage recovery. |
Use Scenario: DIN-rail mounted controller exposed to 24V DC supply ripple and ESD events in factory automation. IC Role / Device Role / Timing Role: Provides deterministic reset initiation during power-up and transient-induced undervoltage conditions. Use Value: Ensures deterministic state machine restart and eliminates watchdog timeout false triggers caused by supply noise. |
| Handheld Test Equipment | Smart Energy Meters |
Use Scenario: Multifunction calibrator with LCD, ADC, and USB interface powered from rechargeable pack. IC Role / Device Role / Timing Role: Monitors main 3.3V rail and coordinates reset timing between µP, display driver, and communication ICs. Use Value: Synchronizes power sequencing across subsystems using single bidirectional RESET line, reducing BOM count. |
Use Scenario: Revenue-grade meter with tamper detection, real-time clock, and PLC communication under fluctuating AC-derived DC supply. IC Role / Device Role / Timing Role: Detects sustained undervoltage on 5V auxiliary rail and initiates secure shutdown before EEPROM corruption. Use Value: Maintains data integrity during grid brownouts by asserting RESET before VCC drops below 4.63V and holding it ≥140ms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US46D3+T | Open-drain RESET output (no internal pullup); identical VTH and tRP. | Requires external 4.7kΩ pullup; suitable only where bidirectional reset is not needed. | Select when interfacing with µPs having unidirectional reset inputs or when board-level pullup already exists. |
| TPS3808G33DBVR | Fixed 3.3V threshold; 200ms default timeout; push-pull RESET; 1.5µA ICC. | Not pin-compatible; requires redesign for 4.63V monitoring and bidirectional timing compliance. | Choose for ultra-low-power 3.3V systems where 4.63V threshold is unnecessary and smaller footprint is critical. |
Compared with MAX6314US46D3+T, MAX6315US46D3+T removes the active pullup but retains identical supervision parameters-making it a functional alternative only when bidirectional reset is unused. TPS3808G33DBVR offers lower current but lacks both the 4.63V threshold and bidirectional timing architecture required for 68HC11-class µPs.
Availability
MAX6314US46D3+T is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC controllers, handheld test equipment, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6314US46D3+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 demanding industrial, automotive, and computing applications.
The MAX6314 family delivers highly accurate, low-power µP supervisory functions with factory-trimmed thresholds and integrated manual reset-targeting cost-sensitive, space-constrained embedded systems needing robust power monitoring.
FAQ
What is the exact reset threshold voltage for MAX6314US46D3+T?
The MAX6314US46D3+T has a factory-trimmed nominal reset threshold voltage of 4.63V, with ±1.8% accuracy at +25°C and ±2.5% over the full -40°C to +85°C temperature range. This value is laser-trimmed during manufacturing and specified in the Ordering Information table of the datasheet.
Does MAX6314US46D3+T require an external pullup resistor on the RESET pin?
No, MAX6314US46D3+T does not require an external pullup resistor. Its RESET output integrates a 4.7kΩ passive pullup resistor in parallel with a p-channel active pullup transistor-enabling direct interface to bidirectional µP reset pins like those on the 68HC11 without additional components.
What is the minimum reset timeout period for MAX6314US46D3+T?
The MAX6314US46D3+T provides a minimum reset timeout period (tRP) of 140ms. This duration is guaranteed after VCC rises above 4.63V or after the MR input is released, ensuring sufficient time for µP and peripheral initialization before release.
Can MAX6314US46D3+T operate with VCC below 2.5V?
Yes, MAX6314US46D3+T operates with VCC as low as 1.0V. While its 4.63V reset threshold is intended for 5V systems, the device remains functional down to 1.0V and guarantees RESET output sinking capability in that range-supporting brownout detection during gradual supply decay.
Is MAX6314US46D3+T pin-compatible with other members of the MAX6314 family?
Yes, all MAX6314 variants-including MAX6314US46D3+T-are pin-compatible within the SOT143 package. Differences are limited to factory-trimmed VTH (e.g., 4.63V) and selected tRP (140ms), allowing drop-in replacement across threshold/time combinations without layout changes.
MAX6314US46D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6314US46D3+T FAQ
1.How can I place an order for MAX6314US46D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US46D3+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 MAX6314US46D3+T reliable?
The price and inventory of MAX6314US46D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US46D3+T is usually 5 days.
3.What payment methods are accepted for MAX6314US46D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US46D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US46D3+T?
MAX6314US46D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US46D3+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 MAX6314US46D3+T?
For technical support, including MAX6314US46D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US46D3+T requirements.
6.How does Aetrix verify that MAX6314US46D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6314US46D3+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 MAX6314US46D3+T meets industry standards.
7.What is the process for return or replacement of MAX6314US46D3+T?
All MAX6314US46D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US46D3+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 MAX6314US46D3+T part is unused and in its original packaging.
Return procedure for MAX6314US46D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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