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Analog Devices Inc./Maxim Integrated MAX6314US30D1-T
- Part No.:
- MAX6314US30D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US30D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,010
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Product details
Overview
MAX6314US30D1-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., 68HC11). It features a factory-trimmed 3.00V 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 MAX6314US30D1-T datasheet, MAX6314US30D1-T pinout, MAX6314US30D1-T application, or MAX6314US30D1-T equivalent, key selection criteria include its bidirectional RESET output architecture, precise 3.00V threshold tolerance, immunity to short VCC transients, manual reset input with internal 63kΩ pullup, and compatibility with systems requiring no external pullup resistor.
Technical Context
The MAX6314US30D1-T implements a precision voltage-monitoring comparator with laser-trimmed resistive divider to detect VCC falling below 3.00V ±1.8% (at +25°C) and ±2.5% over –40°C to +85°C. Its reset timeout is fixed at 1ms (minimum), internally generated via RC timing without external components.
Its RESET output combines an n-channel pulldown, p-channel active pullup, and integrated 4.7kΩ passive pullup-enabling direct interface to bidirectional µP reset pins while ensuring fast rise time (<35ns typical VCC-to-reset delay, <100ns MR-to-reset delay) even under capacitive bus loading. The MR input includes 100ns glitch rejection and requires only a momentary switch to GND.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 3.00V - Factory-trimmed threshold ensures accurate power-fail detection for 3.3V/3.0V logic domains. |
| tRP Min | 1ms - Guarantees sufficient reset assertion time for safe µP initialization after power-up or brownout recovery. |
| ICC | 5µA - Enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| VTH Accuracy | ±1.8% at +25°C - Minimizes false resets and ensures consistent trip point across production units. |
| MR Glitch Rejection | 100ns - Rejects noise spikes on manual reset line without requiring external RC filtering. |
| RESET Output Type | Bidirectional-compatible with active pullup - Eliminates need for external 4.7kΩ pullup and supports µP-initiated reset handshaking. |
| VCC Range | 1.0V to 5.5V - Allows operation down to near-zero supply voltage while maintaining valid RESET state control. |
Pinout & Package
SOT143 (4-pin, surface-mount) package with 1.3mm × 2.9mm footprint and −40°C to +85°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Supply voltage and reset threshold monitor input | Primary power rail connection; internally monitored to trigger reset when falling below 3.00V. |
| MR | Manual reset input | Active-low input with 63kΩ internal pullup; asserts reset when pulled low, supports debounced switch-to-GND interface. |
| RESET | Active-low complementary reset output | Bidirectional-capable output with integrated 4.7kΩ pullup + p-channel active pullup; interfaces directly to 68HC11-style reset I/Os. |
| GND | Ground reference | Return path for all internal circuitry and reset comparator reference. |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed VTH | 3.00V ±1.8% at +25°C enables accurate power monitoring without calibration or external components. |
| Bidirectional RESET architecture | Combines n-channel pulldown, p-channel active pullup, and 4.7kΩ resistor to support µP-driven reset acknowledgment and fast bus rise time. |
| Immunity to short VCC transients | Rejects glitches as short as 100ns (MR) and up to ~1µs (VCC) depending on overdrive, preventing spurious resets in noisy environments. |
| Ultra-low quiescent current | 5µA typical ICC allows integration into always-on, battery-operated systems without significant drain. |
| Integrated MR pullup | 63kΩ internal resistor eliminates need for external pullup, simplifying PCB layout and reducing BOM count. |
Applications
| Portable Medical Devices | Industrial PLC Controllers |
|---|---|
|
Use Scenario: Battery-powered handheld diagnostic tools requiring guaranteed reset during Li-ion discharge from 4.2V to 2.8V. IC Role / Device Role / Timing Role: Monitors VCC and asserts RESET when voltage drops below 3.00V, holding reset for ≥1ms to ensure clean µP restart. Use Value: Prevents erratic firmware execution during brownout; eliminates need for external reset IC or RC network. |
Use Scenario: DIN-rail mounted programmable logic controllers exposed to 24V DC supply ripple and transient surges. IC Role / Device Role / Timing Role: Provides deterministic reset initiation upon VCC dip, with MR supporting operator-initiated system reboot. Use Value: Ensures deterministic boot sequence despite supply noise; 100ns MR glitch rejection avoids accidental resets from EMI. |
| Smart Energy Meters | Automotive Body Control Modules |
|
Use Scenario: Revenue-grade electricity meters with backup supercapacitor hold-up during AC mains interruption. IC Role / Device Role / Timing Role: Detects VCC decay from main supply and triggers controlled shutdown/reset before backup power depletes. Use Value: Maintains data integrity during power loss; ±2.5% VTH stability over temperature ensures reliability across -40°C to +85°C operating range. |
Use Scenario: Low-voltage subsystems (e.g., door module) powered from vehicle battery subject to cranking dips to 6V. IC Role / Device Role / Timing Role: Supervises 3.3V LDO output and asserts reset if VCC falls below 3.00V during cold-crank events. Use Value: Guarantees µP remains held in reset until stable supply is restored, preventing corrupted CAN message transmission. |
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 active pullup); identical 3.00V threshold and 1ms timeout. | Requires external 4.7kΩ pullup; not suitable for bidirectional reset handshaking with 68HC11-class µPs. | Select when system uses open-drain reset bus or µP has dedicated reset driver with external pullup. |
| TPS3808G30DBVR | Push-pull RESET output; ±0.5% VTH accuracy; 2.93V nominal threshold; 20ms default timeout (adjustable). | Lacks MR input debounce and bidirectional capability; higher accuracy but less flexible for legacy µP interfaces. | Select when higher threshold precision is required and MR functionality is implemented externally or not needed. |
Compared with MAX6314US30D1-T, MAX6315US30D1-T omits the active pullup and bidirectional support-making it unsuitable for 68HC11-style handshaking-while TPS3808G30DBVR offers tighter threshold tolerance but requires external MR conditioning and lacks the integrated 4.7kΩ pullup essential for low-component-count designs.
Availability
MAX6314US30D1-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 and long-term lifecycle support.
Supply support for MAX6314US30D1-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, computing, and communications applications.
The MAX6314 series was designed specifically for microprocessor supervisory functions in space- and cost-constrained systems, emphasizing precision voltage monitoring, ultra-low power, and seamless interface to bidirectional reset architectures.
FAQ
What is the exact reset threshold voltage of the MAX6314US30D1-T?
The MAX6314US30D1-T 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 manufacturing and does not require external adjustment.
Does the MAX6314US30D1-T require an external pullup resistor on the RESET pin?
No, the MAX6314US30D1-T integrates both a 4.7kΩ passive pullup resistor and a p-channel active pullup transistor on the RESET pin. This eliminates the need for any external pullup component and ensures fast rise time even with multiple devices on the reset bus.
Can the MAX6314US30D1-T interface directly with the Motorola 68HC11 microcontroller?
Yes, the MAX6314US30D1-T is explicitly designed for bidirectional reset compatibility with the 68HC11 and similar µPs. Its RESET output supports the handshake protocol where the µP pulls RESET low, releases it, and samples the line state-enabled by the integrated active pullup and precise timing.
What is the minimum reset timeout period for the MAX6314US30D1-T?
The MAX6314US30D1-T has a fixed minimum reset timeout period of 1ms. This interval begins when VCC rises above the 3.00V threshold or when the MR input is deasserted, and guarantees sufficient reset assertion time for reliable µP initialization.
How does the MAX6314US30D1-T handle noise on the manual reset (MR) input?
The MAX6314US30D1-T provides 100ns glitch rejection on the MR input and includes a 63kΩ internal pullup resistor. This allows direct connection of a momentary switch to GND without external debounce components, while rejecting EMI-induced pulses shorter than 100ns.
MAX6314US30D1-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:
- 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-143-4
MAX6314US30D1-T FAQ
1.How can I place an order for MAX6314US30D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US30D1-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 MAX6314US30D1-T reliable?
The price and inventory of MAX6314US30D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US30D1-T is usually 5 days.
3.What payment methods are accepted for MAX6314US30D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US30D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US30D1-T?
MAX6314US30D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US30D1-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 MAX6314US30D1-T?
For technical support, including MAX6314US30D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US30D1-T requirements.
6.How does Aetrix verify that MAX6314US30D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6314US30D1-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 MAX6314US30D1-T meets industry standards.
7.What is the process for return or replacement of MAX6314US30D1-T?
All MAX6314US30D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US30D1-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 MAX6314US30D1-T part is unused and in its original packaging.
Return procedure for MAX6314US30D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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