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Analog Devices Inc./Maxim Integrated MAX6314US26D1-T
- Part No.:
- MAX6314US26D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US26D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,943
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Product details
Overview
MAX6314US26D1-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/O (e.g., Motorola 68HC11). It features a factory-trimmed 2.63V 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 MAX6314US26D1-T datasheet, MAX6314US26D1-T pinout, MAX6314US26D1-T application, or MAX6314US26D1-T equivalent, key selection criteria include its bidirectional RESET output architecture, precise 2.63V threshold, 1ms timeout, immunity to short VCC transients, and compatibility with systems requiring manual reset debouncing without external components.
Technical Context
The MAX6314US26D1-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set the 2.63V reset threshold, coupled with an internal timer that enforces a guaranteed minimum 1ms reset assertion after VCC recovery or MR deassertion. Its RESET output combines a 4.7kΩ pull-up resistor and a P-channel active pull-up transistor to drive bidirectional µP reset pins reliably under capacitive bus loading.
It integrates a 63kΩ internal pull-up on the MR input, enabling direct connection of a momentary switch to GND without external debounce circuitry. The device operates across -40°C to +85°C and draws only 5µA typical supply current at +25°C, making it suitable for low-power embedded monitoring applications where supply stability and deterministic reset timing are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Threshold | 2.63V nominal; factory-trimmed for ±1.8% accuracy at +25°C - ensures precise power-fail detection at defined rail level |
| Reset Timeout (tRP) | 1ms minimum - guarantees sufficient reset hold time for safe µP initialization after power-up or brownout recovery |
| Supply Current (ICC) | 5µA typical at +25°C - enables long battery life in portable and always-on monitoring systems |
| MR Input Pullup | 63kΩ internal - eliminates need for external pullup; supports direct switch-to-GND manual reset |
| RESET Output Type | Bidirectional-compatible with active pullup - integrates 4.7kΩ resistor + P-channel transistor to meet 68HC11 timing requirements under bus capacitance |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive-adjacent embedded environments |
| VCC Range | 1.0V to 5.5V - supports operation down to ultra-low VCC while maintaining valid RESET state |
Pinout & Package
SOT143 (4-pin, surface-mount) package with exposed pad option; compact 2.9mm × 1.5mm footprint ideal for space-constrained PCB layouts.
| 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 2.63V |
| MR | Manual reset input | Active-low input with 63kΩ internal pullup; asserts reset when pulled low; no external components required |
| RESET | Active-low bidirectional reset output | Combines N-channel pulldown + 4.7kΩ pullup + P-channel active pullup to interface directly with 68HC11-style bidirectional reset I/O |
| GND | Ground reference | Return path for VCC, MR, and RESET circuits; must be low-impedance for accurate threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET output | Integrates 4.7kΩ passive pullup + P-channel active pullup to ensure <2 E-clock rise time on reset bus - solves timing failure in multi-device µP systems |
| Factory-trimmed 2.63V threshold | Laser-trimmed internal divider provides ±1.8% accuracy at +25°C and ±2.5% over full temperature range - eliminates calibration and reduces BOM count |
| 1ms minimum reset timeout | Internally programmed fixed delay ensures µP reset hold time meets minimum initialization requirements without external RC network |
| 5µA supply current | Ultra-low quiescent current enables >10-year battery life in coin-cell-powered instrumentation and remote sensors |
| Immunity to short VCC transients | Rejects glitches ≤100ns at 100mV overdrive - prevents spurious resets during switching noise or ESD events |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meter with ARM Cortex-M0+ MCU requiring reliable power-on reset and brownout recovery during intermittent alkaline cell discharge. IC Role / Device Role / Timing Role: Supervisory IC asserting bidirectional RESET to initialize MCU and retain fault logging state after low-VCC event. Use Value: 2.63V threshold aligns with 2xAA cutoff voltage; 1ms timeout satisfies ARM reset timing; 5µA ICC extends battery life beyond 3 years. |
Use Scenario: DIN-rail mounted digital input module operating from 24VDC supply with local 3.3V LDO, subject to field-induced transients and voltage sags. IC Role / Device Role / Timing Role: Primary VCC monitor ensuring deterministic reset of FPGA-based logic controller during 24V rail dips. Use Value: ±2.5% threshold stability over -40°C to +85°C prevents false resets in uncontrolled cabinets; MR pin enables field-service reset via front-panel button. |
| Automotive Body Control Units | Smart Energy Meters |
|
Use Scenario: Door module with LIN transceiver and 8-bit MCU powered from vehicle battery (9–16V), requiring robust reset during cranking-induced brownouts. IC Role / Device Role / Timing Role: Dedicated supervisor for 3.3V domain, interfacing bidirectionally with MCU to distinguish internal vs. external reset sources. Use Value: Bidirectional RESET architecture enables 68HC11-compatible vector selection; 1ms tRP ensures compliance with ISO 16750-2 pulse 4a timing. |
Use Scenario: Revenue-grade electricity meter with real-time clock and tamper-detection logic, powered from AC/DC converter with backup supercapacitor. IC Role / Device Role / Timing Role: Critical reset supervisor for metering SoC, asserting reset during capacitor discharge below 2.63V to prevent corrupted flash writes. Use Value: Factory-trimmed 2.63V threshold matches supercap end-of-life voltage; 63kΩ MR pullup allows direct integration of tamper-switch input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US26D1-T | Open-drain RESET output (no internal pullup); same 2.63V threshold and 1ms timeout | Requires external 4.7kΩ pullup; not compatible with bidirectional µP reset I/O like 68HC11 | Select when system uses open-drain reset bus or µP has dedicated pullup; avoid if bidirectional interface is required. |
| TPS3808G12DBVR | Fixed 1.2V threshold, 20ms timeout, 2.5µA ICC; SOT-23-5 package | Lower threshold and longer timeout; lacks MR input and bidirectional RESET architecture | Use only in 1.2V domain monitoring or where manual reset and bidirectional capability are unnecessary. |
Compared with MAX6314US26D1-T, MAX6315US26D1-T offers identical voltage and timing specs but omits the active pullup needed for bidirectional interfaces, while TPS3808G12DBVR targets lower-voltage domains with reduced feature set - neither provides the integrated 68HC11-compatible reset solution of the MAX6314US26D1-T.
Availability
MAX6314US26D1-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive body control units requiring stable component supply, long-term lifecycle support, and guaranteed lead-free sourcing.
Supply support for MAX6314US26D1-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, communications, and computing applications.
The MAX6314 family delivers highly accurate, low-power µP supervisory circuits with factory-trimmed thresholds and bidirectional reset outputs - engineered specifically for reliability-critical embedded systems needing deterministic power-up and brownout response.
FAQ
What is the exact reset threshold voltage of MAX6314US26D1-T?
The MAX6314US26D1-T has a factory-trimmed nominal reset threshold of 2.63V, 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 specified in the Ordering Information table of the datasheet.
Does MAX6314US26D1-T support bidirectional reset communication with microcontrollers?
Yes, the MAX6314US26D1-T features a bidirectional-compatible RESET output that integrates a 4.7kΩ pull-up resistor and a P-channel active pull-up transistor. This architecture enables direct interface with µPs like the Motorola 68HC11 that use the reset line for both assertion and source identification.
What is the minimum reset timeout period for MAX6314US26D1-T?
The MAX6314US26D1-T has a minimum reset timeout period (tRP) of 1ms. This internally programmed delay ensures RESET remains asserted for at least 1ms after VCC rises above 2.63V or after the MR input is released, satisfying µP initialization timing requirements.
Can MAX6314US26D1-T operate with manual reset without external components?
Yes, MAX6314US26D1-T includes a 63kΩ internal pull-up resistor on the MR pin, allowing direct connection of a normally open momentary switch between MR and GND. No external pull-up, debounce RC network, or Schmitt trigger is required for basic manual reset functionality.
What package type is used for MAX6314US26D1-T?
The MAX6314US26D1-T is housed in a SOT143 (4-pin) surface-mount package with dimensions of 2.9mm × 1.5mm. It is rated for operation from -40°C to +85°C and is available in both leaded and lead-free versions (replace "-T" with "+T" for RoHS-compliant ordering).
MAX6314US26D1-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:
- 2.63V
- 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
MAX6314US26D1-T FAQ
1.How can I place an order for MAX6314US26D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US26D1-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 MAX6314US26D1-T reliable?
The price and inventory of MAX6314US26D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US26D1-T is usually 5 days.
3.What payment methods are accepted for MAX6314US26D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US26D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US26D1-T?
MAX6314US26D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US26D1-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 MAX6314US26D1-T?
For technical support, including MAX6314US26D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US26D1-T requirements.
6.How does Aetrix verify that MAX6314US26D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6314US26D1-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 MAX6314US26D1-T meets industry standards.
7.What is the process for return or replacement of MAX6314US26D1-T?
All MAX6314US26D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US26D1-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 MAX6314US26D1-T part is unused and in its original packaging.
Return procedure for MAX6314US26D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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