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Analog Devices Inc./Maxim Integrated MAX6315US25D1+T
- Part No.:
- MAX6315US25D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US25D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,268
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Product details
Overview
MAX6315US25D1+T from Analog Devices is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain active-low RESET signal when voltage falls below 2.5V or upon manual reset assertion. It features factory-trimmed 2.5V reset threshold, 1ms minimum reset timeout period, 5μA supply current at +25°C, and operates across –40°C to +125°C for use in battery-powered instrumentation and embedded controllers.
For engineers reviewing the MAX6315US25D1+T datasheet, MAX6315US25D1+T pinout, MAX6315US25D1+T application, or MAX6315US25D1+T equivalent, this page delivers verified electrical parameters, SOT23 package details, reset timing behavior under temperature variation, and direct alternatives with documented timeout/threshold differences.
Technical Context
The MAX6315US25D1+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set a nominal 2.5V reset threshold (±3.5% over –40°C to +125°C) and integrates a monostable timer for fixed 1ms minimum reset timeout. Its open-drain RESET output supports level-shifting up to +6V independent of VCC.
It includes a debounced manual reset input (MR) with internal 63kΩ pullup, 1μs minimum pulse width requirement, and 100ns glitch rejection. The device draws only 5μA typical supply current at VCC = 5.5V and remains functional down to VCC = 1.0V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.5V nominal, ±3.5% over full temperature range - ensures reliable brownout detection at defined supply margin |
| Reset Timeout Period | 1ms minimum (–40°C to +125°C) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 5μA typical at +25°C, ≤15μA max at +125°C - enables multi-year operation in coin-cell–powered systems |
| Operating Voltage Range | 1.0V to 5.5V - supports monitoring of 1.2V, 1.8V, 2.5V, 3.3V, and 5V rails without external biasing |
| RESET Output Type | Open-drain n-channel MOSFET - allows pullup to any voltage ≤6V, enabling level-shifted reset signaling |
| MR Input Behavior | Internal 63kΩ pullup, logic-low active, 500ns MR-to-RESET delay - eliminates need for external pullup or debounce circuitry |
Pinout & Package
MAX6315US25D1+T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and thermal pad omitted. Pin 1 is GND, Pin 2 is RESET, Pin 3 is MR, Pin 4 is VCC - confirmed by top-view pin diagram and package drawings in Analog Devices documentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal comparator and timer; must be low-impedance connection to system ground plane |
| RESET (Pin 2) | Active-low open-drain output | Sinks current when asserted; requires external pullup resistor (e.g., 10kΩ) to define logic-high voltage level |
| MR (Pin 3) | Manual reset input | Logic-low assertion forces immediate reset; internally pulled up to VCC, so floating = inactive |
| VCC (Pin 4) | Supply and monitor input | Power source and monitored rail; internal divider samples this node to detect undervoltage conditions |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 2.5V ±3.5% over –40°C to +125°C - eliminates calibration effort and external resistor networks |
| Guaranteed reset timeout at temperature extremes | 1ms min over full –40°C to +125°C range - ensures deterministic μP reset hold time in automotive/industrial environments |
| Open-drain RESET with >VCC capability | RESET can be pulled up to 6V while VCC = 2.5V - enables reset signaling across mixed-voltage domains (e.g., 2.5V supervisor → 5V μP) |
| Immunity to short VCC transients | Rejects glitches <100ns wide and <20mV deep - prevents spurious resets during switching noise or ESD events |
| Low quiescent current | 5μA typical at +25°C - extends battery life in portable instruments and remote sensors |
Applications
| Battery-Powered Data Loggers | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Long-term environmental sensor nodes powered by CR2032 coin cells require undervoltage protection before data corruption occurs. IC Role / Device Role / Timing Role: Supervisory circuit monitoring 3.0V regulated rail; asserts RESET if voltage drops below 2.5V during battery depletion. Use Value: Prevents firmware execution errors and flash write corruption by holding μC in reset until stable supply returns, using only 5μA quiescent current. | Use Scenario: Programmable logic controller modules operate in harsh industrial cabinets where 24V DC supplies experience ripple and brownouts. IC Role / Device Role / Timing Role: Monitors local 5V LDO output feeding FPGA configuration logic; provides 1ms minimum reset pulse to ensure clean state initialization. Use Value: Guarantees deterministic reset timing across –40°C to +125°C ambient, eliminating boot failures due to marginal supply recovery. |
| Medical Point-of-Care Diagnostics | Automotive Body Control Modules |
Use Scenario: Portable blood glucose meters use single-cell Li-ion batteries whose voltage sags under load, risking ADC misreads during measurement. IC Role / Device Role / Timing Role: Resets microcontroller when monitored 3.3V rail dips below 2.5V, preventing erroneous test result storage. Use Value: Factory-trimmed 2.5V threshold ensures consistent trip point across production units without post-assembly calibration. | Use Scenario: BCMs manage door locks, lighting, and window controls using 12V-to-3.3V DC/DC converters subject to load dump transients. IC Role / Device Role / Timing Role: Supervises 3.3V domain; MR pin connected to diagnostic test port for field-service forced reset. Use Value: Internal MR pullup eliminates external components; 100ns glitch rejection prevents false resets during CAN bus noise bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US25D1+T | Same 2.5V threshold and 1ms timeout, but bidirectional reset pin compatible with μCs requiring reset input/output sharing | Required where microcontroller uses shared reset pin for both assertion and sampling (e.g., some ARM Cortex-M0+ devices) | Select only if bidirectional reset interface is mandatory; otherwise MAX6315US25D1+T offers lower cost and simpler layout |
| TPS3808G125DBVR | 2.5V threshold, 200ms default timeout (adjustable via capacitor), 1.5μA typical ICC - lower current but longer fixed timeout | Suitable for systems needing longer reset hold time and ultra-low power, but not for 1ms-critical boot sequences | Choose when extended reset duration improves reliability and sub-2μA supply current is prioritized over fast release |
Compared with MAX6314US25D1+T, MAX6315US25D1+T provides simpler unidirectional reset control and smaller footprint; versus TPS3808G125DBVR, it delivers faster 1ms timeout and guaranteed performance over –40°C to +125°C without external timing components.
Availability
MAX6315US25D1+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLC modules, medical diagnostics equipment, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US25D1+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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.
The MAX6315 belongs to Analog Devices' precision supervisory IC product line, engineered for deterministic power-on reset, brownout protection, and manual reset integration in space-constrained, low-power embedded systems.
FAQ
What is the exact reset threshold voltage tolerance for MAX6315US25D1+T over temperature?
The MAX6315US25D1+T has a nominal reset threshold of 2.5V with tolerance of ±3.5% over the full operating temperature range of –40°C to +125°C, as specified in the Electrical Characteristics table. This means the actual trip point falls between 2.4125V and 2.5875V across temperature extremes, ensuring robust brownout detection without external trimming.
Does MAX6315US25D1+T support operation below 2.5V supply voltage?
Yes, MAX6315US25D1+T operates down to VCC = 1.0V and continues asserting RESET as long as VCC remains below the 2.5V threshold. Its internal circuitry remains functional and guarantees RESET remains low for VCC > 1V, enabling reliable shutdown sequencing even during deep brownout conditions.
Can the RESET output of MAX6315US25D1+T be pulled up to 5V while VCC is at 2.5V?
Yes, the RESET output of MAX6315US25D1+T is an open-drain structure rated for voltages up to +6.0V, allowing it to be pulled up to 5V even when VCC = 2.5V. This enables level-shifting functionality critical in mixed-supply systems, such as resetting a 5V microcontroller from a 2.5V monitored rail.
What is the minimum pulse width required on the MR pin to trigger reset in MAX6315US25D1+T?
The MR pin of MAX6315US25D1+T requires a minimum logic-low pulse width of 1μs to reliably assert reset. This specification is guaranteed across –40°C to +125°C and ensures compatibility with mechanical pushbuttons, GPIO outputs, and test fixtures without requiring external pulse stretching.
Is MAX6315US25D1+T pin-compatible with MAX811?
Yes, MAX6315US25D1+T is explicitly stated as pin-compatible with the MAX811 in its Benefits and Features section. Both devices use identical 4-pin SOT23 pinout (GND, RESET, MR, VCC), enabling drop-in replacement in existing designs where the 2.5V threshold and 1ms timeout meet system requirements.
MAX6315US25D1+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:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US25D1+T FAQ
1.How can I place an order for MAX6315US25D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US25D1+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 MAX6315US25D1+T reliable?
The price and inventory of MAX6315US25D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US25D1+T is usually 5 days.
3.What payment methods are accepted for MAX6315US25D1+T?
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4.How is shipping managed for MAX6315US25D1+T?
MAX6315US25D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US25D1+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 MAX6315US25D1+T?
For technical support, including MAX6315US25D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US25D1+T requirements.
6.How does Aetrix verify that MAX6315US25D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US25D1+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 MAX6315US25D1+T meets industry standards.
7.What is the process for return or replacement of MAX6315US25D1+T?
All MAX6315US25D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US25D1+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 MAX6315US25D1+T part is unused and in its original packaging.
Return procedure for MAX6315US25D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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