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Analog Devices Inc./Maxim Integrated MAX6315US46D2+T
- Part No.:
- MAX6315US46D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US46D2+T.pdf
- Description:
- IC RESET CIRCUIT 4.63V SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
MAX6315US46D2+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 4.63V or upon manual reset assertion. It provides a factory-trimmed 20ms minimum reset timeout period, operates from -40°C to +125°C, draws only 5μA typical supply current, and supports level-shifting via its open-drain output pulled up to ≤6V - used in battery-powered controllers and industrial μP systems requiring reliable brownout detection.
For engineers reviewing the MAX6315US46D2+T datasheet, MAX6315US46D2+T pinout, MAX6315US46D2+T application, or MAX6315US46D2+T equivalent, this page delivers verified electrical parameters, SOT23 package layout, temperature-stable reset threshold accuracy (±3.5% over -40°C to +125°C), MR input glitch rejection (100ns), and design-meaningful comparisons with pin-compatible alternatives for embedded power-monitoring designs.
Technical Context
The MAX6315US46D2+T implements a precision voltage comparator with factory-laser-trimmed resistive divider to set a nominal 4.63V reset threshold, with ±3.5% tolerance across -40°C to +125°C and 60ppm/°C tempco. Its internal timer initiates a guaranteed-minimum 20ms reset timeout after VCC recovery or MR deassertion.
It features an integrated 63kΩ MR pullup resistor, 100ns MR glitch rejection, and an open-drain RESET output capable of sinking 3.2mA at VCC > 4.25V while tolerating pullup voltages up to 6V - enabling level-shifted reset signaling between disparate supply domains without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal, ±3.5% over full temperature range - ensures deterministic brownout detection for 5V-systems with margin against ripple-induced false triggers |
| Reset Timeout Period | 20ms minimum (D2 variant) - guarantees sufficient μP initialization time after power stabilization before release |
| Supply Current | 5μA typical at VCC = 5.5V - enables multi-year operation in coin-cell–powered portable instruments |
| MR Input Glitch Rejection | 100ns - suppresses EMI-induced noise on manual reset lines without external RC filtering |
| RESET Output Sink Capability | 3.2mA at VCC > 4.25V, VOL ≤ 0.4V - drives standard TTL/CMOS reset inputs directly with 10kΩ pullup |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| VCC Range | 1.0V to 5.5V - supports valid reset assertion down to ultra-low VCC during deep brownout |
Pinout & Package
MAX6315US46D2+T is housed in a 4-pin SOT23 package (package code U4+1), with 1.3mm × 2.9mm footprint and 0.95mm height - compatible with high-density PCB layouts and reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and RESET sink current; must be connected to system ground plane for stable threshold accuracy |
| 2 (RESET) | Active-low open-drain output | Drives reset line low during fault; requires external pullup (typically 10kΩ) to any supply ≤6V - enables level shifting across voltage domains |
| 3 (MR) | Manual reset input | Logic-low assertion forces immediate reset; includes 63kΩ internal pullup - eliminates need for external resistor if unused |
| 4 (VCC) | Supply and monitor input | Power source and monitored rail; internal laser-trimmed divider derives 4.63V threshold - no external components required |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 4.63V with ±3.5% tolerance over -40°C to +125°C - eliminates calibration effort and ensures consistent trip point across operating conditions |
| Guaranteed-minimum 20ms reset timeout | Ensures μP completes power-up sequencing before release, even under worst-case voltage ramp rates and temperature extremes |
| Open-drain RESET with 6V-tolerant pullup | Permits reset signaling from 5V domain to 3.3V or 2.5V logic without level translators - reduces BOM count and board area |
| Integrated MR pullup and 100ns glitch rejection | Supports direct switch connection to MR with no external components; rejects fast transients common in noisy industrial environments |
| Ultra-low 5μA supply current | Minimizes quiescent drain in always-on monitoring circuits - critical for battery life in portable instrumentation and IoT edge nodes |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Programmable logic controllers deployed in factory automation require deterministic reset behavior during mains voltage sags or backup battery switchover. IC Role / Device Role / Timing Role: Supervisory circuit monitoring main 5V rail and asserting RESET until stable, with 20ms hold time ensuring firmware boot integrity. Use Value: Prevents corrupted state transitions during brownout by guaranteeing reset assertion until VCC exceeds 4.63V and remains stable for ≥20ms. |
Use Scenario: Remote environmental sensors powered by CR2032 coin cells operate intermittently for years, demanding ultra-low quiescent current and robust start-up reliability. IC Role / Device Role / Timing Role: Low-power reset supervisor with 5μA ICC and precise 4.63V threshold ensures MCU resets only when supply drops below safe execution voltage. Use Value: Extends battery life while maintaining fail-safe startup - 4.63V threshold aligns with LiMnO₂ cell end-of-life voltage, avoiding premature shutdown. |
| Automotive Body Control Modules | Medical Diagnostic Handhelds |
|
Use Scenario: Under-hood body control units experience wide temperature swings (-40°C to +125°C) and load-dump transients, requiring thermally stable reset performance. IC Role / Device Role / Timing Role: High-temperature-grade supervisory IC providing accurate 4.63V reset with ±3.5% tolerance and 60ppm/°C tempco across full range. Use Value: Maintains trip-point consistency despite thermal drift - prevents spurious resets during engine heat soak or cold cranking. |
Use Scenario: Portable ultrasound or glucose meters use manual reset buttons for field recalibration and must reject ESD-induced glitches during clinical handling. IC Role / Device Role / Timing Role: MR input with 100ns glitch rejection and internal 63kΩ pullup enables momentary switch interface without debounce circuitry. Use Value: Eliminates external RC filters and reduces component count while ensuring reliable operator-initiated reset in ESD-prone medical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SEUS46D2+T | Same 4.63V threshold and 20ms timeout, but rated only to +85°C (vs. +125°C for MAX6315US46D2+T); identical SOT23-4 pinout | Suitable for commercial-temperature consumer electronics; not qualified for extended industrial or automotive ambient ranges | Select MAX811SEUS46D2+T only if operating temperature stays ≤+85°C - otherwise MAX6315US46D2+T ensures full-spec performance at +125°C |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.63V); 20ms timeout; 1.5μA ICC; SOT23-5 package (5-pin vs. 4-pin) | Requires redesign for 3.3V systems; extra pin for enable/disable function adds flexibility but increases layout complexity | Choose TPS3808G33DBVR only for 3.3V rails where ultra-low ICC (<2μA) is critical - MAX6315US46D2+T is optimal for 5V systems needing 4.63V precision and minimal footprint |
Compared with MAX811SEUS46D2+T and TPS3808G33DBVR, the MAX6315US46D2+T uniquely combines 4.63V threshold accuracy, 20ms timeout, -40°C to +125°C qualification, and 4-pin SOT23 simplicity - making it the most direct fit for high-reliability 5V μP monitoring where thermal margin and board space are constrained.
Availability
MAX6315US46D2+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US46D2+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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX6315US46D2+T belongs to Analog Devices' precision supervisory IC product line, engineered specifically for reliable power-on reset, brownout protection, and manual reset functionality in space-constrained, low-power embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US46D2+T?
The MAX6315US46D2+T has a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±3.5% over the full -40°C to +125°C operating temperature range. This value is laser-trimmed during manufacturing and specified in the Electrical Characteristics table of the official datasheet - the "46" in the part number explicitly denotes the 4.63V threshold option.
Does the MAX6315US46D2+T require external components for basic operation?
No, the MAX6315US46D2+T requires no external components for core supervision functionality. Its MR input includes a 63kΩ internal pullup resistor, and the open-drain RESET output only needs an external pullup resistor (typically 10kΩ) to a compatible voltage rail - no capacitors, resistors, or trimming networks are needed to achieve specified 4.63V threshold and 20ms timeout behavior.
Can the RESET output of the MAX6315US46D2+T be pulled up to a voltage higher than VCC?
Yes, the MAX6315US46D2+T's RESET pin is an open-drain output rated for pullup voltages up to +6.0V, regardless of VCC level - enabling level shifting between different supply domains (e.g., pulling RESET up to 3.3V while monitoring a 5V VCC rail). This capability is explicitly confirmed in the Absolute Maximum Ratings and Detailed Description sections of the datasheet.
What is the minimum reset timeout period guaranteed for the MAX6315US46D2+T?
The MAX6315US46D2+T guarantees a minimum reset timeout period of 20ms (D2 variant) after VCC rises above the 4.63V threshold or after MR is deasserted. This value is tested and specified across -40°C to +125°C, with typical values ranging from 20ms to 40ms depending on temperature - ensuring sufficient hold time for μP initialization under worst-case conditions.
Is the MAX6315US46D2+T pin-compatible with other devices in the MAX6315 family?
Yes, all MAX6315 variants - including MAX6315US46D2+T - share identical 4-pin SOT23 pinout (GND, RESET, MR, VCC) and pin functions. Threshold voltage (e.g., 4.63V) and timeout period (e.g., 20ms) are factory-configured, so PCB layout remains unchanged when selecting different D1–D4 or voltage-option variants within the same package.
MAX6315US46D2+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US46D2+T FAQ
1.How can I place an order for MAX6315US46D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US46D2+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 MAX6315US46D2+T reliable?
The price and inventory of MAX6315US46D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US46D2+T is usually 5 days.
3.What payment methods are accepted for MAX6315US46D2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US46D2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US46D2+T?
MAX6315US46D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US46D2+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 MAX6315US46D2+T?
For technical support, including MAX6315US46D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US46D2+T requirements.
6.How does Aetrix verify that MAX6315US46D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US46D2+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 MAX6315US46D2+T meets industry standards.
7.What is the process for return or replacement of MAX6315US46D2+T?
All MAX6315US46D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US46D2+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 MAX6315US46D2+T part is unused and in its original packaging.
Return procedure for MAX6315US46D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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