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Analog Devices Inc./Maxim Integrated MAX6314US44D1-T
- Part No.:
- MAX6314US44D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US44D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,177
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Product details
Overview
MAX6314US44D1-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 bidirectional reset I/Os (e.g., Motorola 68HC11). It features a factory-trimmed 4.39V reset threshold, 1ms minimum reset timeout period, ±1.8% threshold accuracy at +25°C, 5µA supply current, and SOT143 package. It is used in portable/battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6314US44D1-T datasheet, MAX6314US44D1-T pinout, MAX6314US44D1-T application, or MAX6314US44D1-T equivalent, key selection criteria include bidirectional RESET compatibility, precise 4.39V threshold tolerance, 1ms timeout timing, immunity to short VCC transients, and absence of external pull-up components.
Technical Context
The MAX6314US44D1-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set its 4.39V nominal reset threshold, with ±1.8% accuracy at +25°C and ±2.5% over -40°C to +85°C. Its reset timeout is internally programmed to 1ms (minimum), determined by an on-chip RC oscillator and one-shot timer.
The RESET output combines an n-channel pulldown, a p-channel active pullup, and a parallel 4.7kΩ resistor-enabling direct interface to bidirectional µP reset pins without external components. MR input includes a 63kΩ internal pullup and supports debounced manual reset assertion with glitch rejection of ≤100ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.39V - Factory-trimmed threshold ensures accurate power-fail detection for 4.5V–5V systems. |
| tRP Min | 1ms - Guarantees sufficient reset hold time for safe µP initialization after power-up or brownout recovery. |
| ICC | 5µA - Enables ultra-low-power operation in battery-backed or energy-constrained applications. |
| Reset Threshold Accuracy | ±1.8% at +25°C - Minimizes design margin requirements for VCC monitoring in stable environments. |
| MR Glitch Rejection | 100ns - Rejects noise spikes on manual reset line without false triggering. |
| VCC Operating Range | 1.0V to 5.5V - Supports operation down to near-zero VCC while maintaining valid RESET state. |
| RESET Output Type | Bidirectional with integrated 4.7kΩ pullup + p-channel active pullup - Eliminates need for external pullup and ensures fast rise time under capacitive load. |
Pinout & Package
SOT143 (4-pin, surface-mount) package with exposed pad option; footprint compatible with JEDEC MO-178AB standard; operating temperature range: -40°C to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage and reset threshold monitor input | Primary power rail input; internally divided to compare against reference for reset assertion. |
| MR | Manual reset input | Active-low input with 63kΩ internal pullup; asserts reset when pulled low; no external debounce required. |
| RESET | Active-low bidirectional reset output | Combines n-channel sink, p-channel source, and 4.7kΩ resistor to drive µP bidirectional reset bus directly. |
| GND | Ground reference | Return path for all internal circuitry and reset comparator reference. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET interface | Enables native support for 68HC11-style µPs without external logic or level-shifting, reducing BOM count and layout complexity. |
| Factory-trimmed 4.39V threshold | Eliminates need for external resistor divider or calibration, ensuring consistent trip point across production lots. |
| 1ms minimum reset timeout | Meets fast-boot requirements for embedded controllers and portable devices where rapid system readiness is critical. |
| 5µA quiescent current | Extends battery life in always-on monitoring applications such as smart sensors and IoT edge nodes. |
| Immunity to VCC transients ≤100ns | Prevents spurious resets during switching noise or ESD events, improving system robustness in noisy industrial environments. |
Applications
| Portable Medical Devices | Industrial PLC Controllers |
|---|---|
Use Scenario: Battery-powered glucose meters and handheld diagnostic tools requiring guaranteed reset during battery insertion or low-voltage brownout. IC Role / Device Role / Timing Role: Supervisory IC asserting bidirectional RESET to ARM Cortex-M0+ MCU upon VCC drop below 4.39V or manual button press. Use Value: 5µA supply current extends single-CR2032 battery life beyond 2 years; 1ms timeout enables sub-10ms boot sequence. |
Use Scenario: DIN-rail mounted programmable logic controllers operating in electrically noisy factory floors with fluctuating 24VDC supplies. IC Role / Device Role / Timing Role: Voltage supervisor monitoring regulated 5V rail, interfacing bidirectionally with Renesas RX65N µP reset pin to distinguish internal vs. external reset sources. Use Value: 100ns MR glitch rejection prevents false resets from relay coil kickback; ±2.5% threshold stability ensures reliable operation across -40°C to +85°C ambient. |
| Smart Energy Meters | Automotive Body Control Modules |
Use Scenario: ANSI C12.20-compliant electricity meters with dual-supply architecture (mains + backup battery) needing deterministic reset coordination. IC Role / Device Role / Timing Role: Primary VCC supervisor for metering SoC, asserting RESET when main 3.3V rail dips below 4.39V due to transient grid disturbance. Use Value: Integrated 4.7kΩ pullup + active p-channel eliminates external component, saving PCB area in space-constrained meter modules. |
Use Scenario: Low-power door module ECUs powered from vehicle battery (9V–16V), requiring fail-safe reset during cold-crank (VCC dip to 3.2V). IC Role / Device Role / Timing Role: Secondary supervisor monitoring post-regulator 5V rail, asserting RESET to Infineon AURIX TC234L if VCC falls below 4.39V for >1ms. Use Value: 4.39V threshold aligns with automotive 5V regulator dropout margin; SOT143 package supports automated optical inspection and reflow compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US44D1-T | Open-drain RESET output (no internal pullup or active pullup); identical 4.39V threshold and 1ms timeout. | Requires external 4.7kΩ pullup resistor; unsuitable for bidirectional µP reset interfaces like 68HC11. | Select only when interfacing with open-drain–compatible µPs (e.g., many ARM Cortex-M series) and board layout allows external pullup placement. |
| TLV803EB43DBZR | Fixed 4.38V threshold (±0.5% initial accuracy), 240ms typical timeout, 1.6µA ICC, SOT-23-3 package. | Lacks MR input and bidirectional RESET capability; timeout not user-selectable; smaller package but no manual reset support. | Choose for ultra-low-power, cost-sensitive applications where manual reset is unnecessary and longer timeout is acceptable. |
Compared with MAX6314US44D1-T, MAX6315US44D1-T requires external pullup and cannot drive bidirectional reset buses, while TLV803EB43DBZR offers lower current but omits MR and bidirectional functionality-making MAX6314US44D1-T uniquely suited for 68HC11-compatible systems needing manual reset and minimal external components.
Availability
MAX6314US44D1-T is available at Aetrix Electronics and suitable for portable medical devices, industrial PLC controllers, smart energy meters, and automotive body control modules requiring stable component supply, long-term lifecycle support, and lead-free compliance.
Supply support for MAX6314US44D1-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, computing, communications, and consumer applications.
The MAX6314 product line delivers highly accurate, low-power µP supervisory circuits optimized for systems requiring bidirectional reset compatibility, factory-trimmed thresholds, and minimal external components-targeting portable, industrial, and automotive embedded control.
FAQ
What is the exact reset threshold voltage of the MAX6314US44D1-T?
The MAX6314US44D1-T has a factory-trimmed nominal reset threshold voltage of 4.39V, with ±1.8% accuracy at +25°C and ±2.5% accuracy over the full -40°C to +85°C operating temperature range. This value is laser-trimmed during production and confirmed in the Ordering Information table and Electrical Characteristics section of the datasheet.
Does the MAX6314US44D1-T support bidirectional reset communication with microcontrollers?
Yes, the MAX6314US44D1-T supports bidirectional reset communication via its specialized RESET output, which integrates an n-channel pulldown, p-channel active pullup, and parallel 4.7kΩ resistor. This architecture enables direct interface with µPs like the Motorola 68HC11 that use bidirectional reset I/O pins to distinguish between internal and external reset sources.
What is the minimum reset timeout period specified for the MAX6314US44D1-T?
The MAX6314US44D1-T is configured with a minimum reset timeout period (tRP) of 1ms, as indicated by the "D1" suffix in the part number and confirmed in the Ordering Information table. This timeout is internally generated and guaranteed across the full operating temperature range.
Can the MAX6314US44D1-T operate with supply voltages below 2.5V?
Yes, the MAX6314US44D1-T operates over a VCC range of 1.0V to 5.5V. While its 4.39V reset threshold is intended for higher-voltage rails, the device remains functional down to 1.0V-ensuring valid RESET output behavior during deep brownout conditions and enabling use in multi-rail systems with auxiliary low-voltage monitoring.
Is a manual reset input provided on the MAX6314US44D1-T, and how is it implemented?
Yes, the MAX6314US44D1-T includes a dedicated Manual Reset (MR) input (Pin 3) with an internal 63kΩ pullup resistor. A logic-low assertion on MR forces RESET active for the duration of the low signal plus the full 1ms timeout period. No external debounce circuitry is required, though a 0.1µF capacitor to ground is recommended in noisy environments.
MAX6314US44D1-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.39V
- 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-143-4
MAX6314US44D1-T FAQ
1.How can I place an order for MAX6314US44D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US44D1-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 MAX6314US44D1-T reliable?
The price and inventory of MAX6314US44D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US44D1-T is usually 5 days.
3.What payment methods are accepted for MAX6314US44D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US44D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US44D1-T?
MAX6314US44D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US44D1-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 MAX6314US44D1-T?
For technical support, including MAX6314US44D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US44D1-T requirements.
6.How does Aetrix verify that MAX6314US44D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6314US44D1-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 MAX6314US44D1-T meets industry standards.
7.What is the process for return or replacement of MAX6314US44D1-T?
All MAX6314US44D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US44D1-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 MAX6314US44D1-T part is unused and in its original packaging.
Return procedure for MAX6314US44D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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