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Analog Devices Inc./Maxim Integrated MAX6314US25D1-T
- Part No.:
- MAX6314US25D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6314US25D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,220
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Product details
Overview
MAX6314US25D1-T from Maxim Integrated is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts a bidirectional active-low RESET signal when VCC falls below 2.50V or when manual reset (MR) is asserted. It features factory-trimmed 2.5V reset threshold, 1ms minimum reset timeout period, ±1.8% threshold accuracy at +25°C, 5µA supply current, and SOT143 package. It is designed for reliable power-on/power-down reset control in 68HC11-compatible embedded systems.
For engineers reviewing the MAX6314US25D1-T datasheet, MAX6314US25D1-T pinout, MAX6314US25D1-T application, or MAX6314US25D1-T equivalent, this page delivers verified technical context, precise timing and threshold specs, bidirectional reset interface details, real-world use cases in battery-powered controllers and critical µP monitoring, and validated alternative options with documented functional differences.
Technical Context
The MAX6314US25D1-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to detect VCC falling below 2.50V ±1.8% (at +25°C), with ±2.5% accuracy over –40°C to +85°C. Its reset timeout is internally programmed to a minimum of 1ms after VCC recovery or MR deassertion.
Its 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 time (<350ns typical into 100pF) and compatibility with bidirectional µP reset I/Os like the 68HC11 without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.50V ±1.8% at +25°C; ensures reliable brownout detection at nominal 2.5V logic supply rails |
| Reset Timeout Period | 1ms minimum; guarantees sufficient reset assertion duration for safe µP initialization |
| Supply Current | 5µA typical at +25°C; enables ultra-low-power operation in battery-backed or portable systems |
| VCC Operating Range | 1.0V to 5.5V; supports operation down to sub-logic-level voltages while maintaining RESET validity |
| MR Input Threshold | 0.3 × VCC (min), 0.7 × VCC (max); ensures robust noise immunity and TTL/CMOS compatibility |
| RESET Output Structure | Bidirectional with integrated 4.7kΩ pullup + p-channel active pullup; eliminates need for external pullup resistor |
| Tempco | 60ppm/°C; maintains tight threshold stability across industrial temperature range (–40°C to +85°C) |
Pinout & Package
SOT143 (4-pin, surface-mount) package with exposed pad option; compact 2.9mm × 1.5mm footprint suitable for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: GND | Ground reference | Return path for all internal circuitry; must be connected to system ground plane for stable reset threshold |
| 2: RESET | Bidirectional active-low reset I/O | Drives low during reset; includes internal 4.7kΩ pullup + p-channel active pullup for fast rise time into capacitive loads |
| 3: MR | Manual reset input | Active-low; internally pulled up to VCC via 63kΩ resistor; requires no external debounce circuitry |
| 4: VCC | Supply voltage and monitored rail | Input for both power and voltage monitoring; monitored via internal laser-trimmed divider for 2.50V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional RESET output | Enables direct interface with 68HC11 and other µPs having bidirectional reset pins - no level-shifting or external logic required |
| Factory-trimmed 2.50V threshold | Eliminates external resistor network and calibration; achieves ±1.8% accuracy at +25°C with 60ppm/°C tempco |
| 1ms minimum reset timeout | Guarantees µP reset hold time exceeds minimum requirements of most 8/16-bit microcontrollers during power-up |
| 5µA quiescent current | Reduces standby power in always-on or battery-operated systems - e.g., extends shelf life of portable instrumentation |
| Immunity to short VCC transients | Rejects glitches ≤100ns at 100mV overdrive (per Typical Operating Characteristics), preventing spurious resets |
Applications
| Computers | Controllers |
|---|---|
Use Scenario: Desktop motherboard power sequencing during cold boot and brownout events. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until VCC stabilizes above 2.50V and holds for ≥1ms. Use Value: Prevents CPU execution from unstable supply; eliminates need for discrete RC reset network and saves board area. |
Use Scenario: Industrial PLC main controller board requiring deterministic reset under fluctuating 2.4–2.6V supply rails. IC Role / Device Role / Timing Role: Precision 2.50V threshold monitor with 1ms timeout ensures consistent reset behavior across temperature and aging. Use Value: Guarantees reliable startup even with marginal 2.5V LDO output; ±2.5% over-temp accuracy avoids false resets. |
| Intelligent Instruments | Portable/Battery-Powered Equipment |
Use Scenario: Handheld multimeter with lithium coin-cell backup and auto-power-on detection. IC Role / Device Role / Timing Role: Monitors main 2.5V rail and provides debounced manual reset via front-panel button. Use Value: Internal 63kΩ MR pullup and glitch rejection eliminate external debounce components; 5µA ICC extends battery life. |
Use Scenario: Wearable health sensor operating from single 2.5V Li-ion cell with deep discharge protection. IC Role / Device Role / Timing Role: Supervises VCC down to 1.0V and asserts RESET before supply collapse, enabling graceful shutdown. Use Value: Valid RESET output down to VCC = 1V prevents undefined µC state; bidirectional interface supports low-voltage µP reset I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US25D1-T | Open-drain RESET output (no internal pullup); identical 2.50V threshold and 1ms timeout. | Requires external pullup resistor; unsuitable for bidirectional µP reset I/Os like 68HC11. | Select only when interfacing with open-drain–compatible µPs or when active pullup conflicts with system-level reset bus design. |
| MAX811TEUS25D3-T | Same SOT143 package and 2.50V threshold, but 140ms timeout and ±2% threshold accuracy over temp. | Longer reset hold time suits slower µPs or systems needing extended initialization windows. | Choose when 1ms timeout is insufficient; verify µP reset timing margin supports 140ms assertion. |
Compared with MAX6314US25D1-T, the MAX6315US25D1-T lacks bidirectional drive capability and requires external biasing, while the MAX811TEUS25D3-T trades faster reset release for longer guaranteed assertion - making the MAX6314US25D1-T optimal for 68HC11-class µPs needing minimal, self-contained reset control at 2.5V.
Availability
MAX6314US25D1-T is available at Aetrix Electronics and suitable for computers, controllers, intelligent instruments, and portable/battery-powered equipment requiring stable component supply, long-term lifecycle support, and guaranteed performance across –40°C to +85°C.
Supply support for MAX6314US25D1-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, and communications applications.
The MAX6314 series was developed specifically for microprocessor supervisory functions in space- and power-constrained systems, emphasizing factory-trimmed accuracy, bidirectional reset compatibility, and ultra-low quiescent current.
FAQ
What is the exact reset threshold voltage for MAX6314US25D1-T?
The MAX6314US25D1-T has a factory-trimmed nominal reset threshold of 2.50V, with ±1.8% accuracy at +25°C and ±2.5% over the full –40°C to +85°C operating range. This value is laser-trimmed on-die and specified in the Electrical Characteristics table under "Reset Threshold (VTH)".
Does MAX6314US25D1-T support bidirectional reset I/Os like the 68HC11?
Yes, the MAX6314US25D1-T RESET pin is explicitly designed for bidirectional interfaces. It integrates an n-channel pulldown, a 4.7kΩ passive pullup, and a p-channel active pullup that turns on for 2µs - enabling fast rise time and direct connection to µPs such as the Motorola 68HC11 without external components.
What is the minimum reset timeout period for MAX6314US25D1-T?
The MAX6314US25D1-T has a minimum reset timeout period of 1ms, guaranteed after VCC rises above 2.50V or after the manual reset (MR) input is deasserted. This value is fixed per the "D1" suffix and confirmed in the Ordering Information table.
Can MAX6314US25D1-T operate with VCC below 2.5V?
Yes - the MAX6314US25D1-T operates over VCC = 1.0V to 5.5V and asserts RESET whenever VCC falls below 2.50V. It remains functional down to 1.0V, and RESET is guaranteed valid (low) for VCC > 1V; below 1V, RESET becomes high-impedance, requiring optional external pull-down if needed.
Is there an internal pullup on the MR pin of MAX6314US25D1-T?
Yes, the MAX6314US25D1-T includes a 63kΩ internal pullup resistor on the MR pin. This allows MR to be left unconnected when unused, or driven directly by a momentary switch to GND - eliminating the need for external pullup components or debounce circuitry in most applications.
MAX6314US25D1-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:
- 2.5V
- 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
MAX6314US25D1-T FAQ
1.How can I place an order for MAX6314US25D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6314US25D1-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 MAX6314US25D1-T reliable?
The price and inventory of MAX6314US25D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6314US25D1-T is usually 5 days.
3.What payment methods are accepted for MAX6314US25D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6314US25D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6314US25D1-T?
MAX6314US25D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6314US25D1-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 MAX6314US25D1-T?
For technical support, including MAX6314US25D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6314US25D1-T requirements.
6.How does Aetrix verify that MAX6314US25D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6314US25D1-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 MAX6314US25D1-T meets industry standards.
7.What is the process for return or replacement of MAX6314US25D1-T?
All MAX6314US25D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6314US25D1-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 MAX6314US25D1-T part is unused and in its original packaging.
Return procedure for MAX6314US25D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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