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Analog Devices Inc./Maxim Integrated MAX6315US47D3+T
- Part No.:
- MAX6315US47D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US47D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,461
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Product details
Overview
MAX6315US47D3+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 when manual reset (MR) is asserted. It provides a factory-trimmed 140ms minimum reset timeout period, 5μA supply current at +25°C, and operates across -40°C to +125°C for use in battery-powered controllers and industrial μP systems.
For engineers reviewing the MAX6315US47D3+T datasheet, MAX6315US47D3+T pinout, MAX6315US47D3+T application, or MAX6315US47D3+T equivalent, this page delivers verified electrical parameters, SOT23 package details, reset threshold accuracy (±3.5% over full temperature range), MR input logic thresholds, and design-meaningful timing behavior under brownout and manual reset conditions.
Technical Context
The MAX6315US47D3+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider setting nominal VTH = 4.63V, and a monolithic timer generating a guaranteed-minimum 140ms reset timeout after VCC recovery or MR release. Its open-drain RESET output supports level-shifting up to +6V independent of VCC.
It features immunity to short VCC transients (<100ns glitch rejection on MR, <35μs power-down delay), guaranteed operation down to VCC = 1.0V, and internal 63kΩ MR pullup - eliminating external components for manual reset functionality in space-constrained embedded designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Reset Threshold | 4.63V ±3.5% over -40°C to +125°C - ensures reliable brownout detection for 5V systems with margin against supply droop |
| Reset Timeout Period (min) | 140ms - guarantees sufficient μP initialization time after power recovery or manual reset release |
| Supply Current (ICC) | 15μA max at +125°C, VCC = 5.5V - enables multi-year battery life in portable instrumentation |
| RESET Output Type | Open-drain n-channel MOSFET - allows pullup to any voltage ≤6V, enabling level-shifted reset signaling across supply domains |
| MR Input Threshold | VIL = 0.8V / VIH = 2.4V (VTH > 4.0V) - compatible with standard 3.3V/5V logic without external level translation |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and high-reliability embedded control |
Pinout & Package
MAX6315US47D3+T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052, land pattern 90-0183), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Return path for internal comparator and timer; must be connected directly to system ground plane for noise immunity |
| 2 - RESET | Active-low open-drain output | Sinks current when asserted; requires external pullup (e.g., 10kΩ) to defined logic-high voltage; supports voltage higher than VCC (≤6V) |
| 3 - MR | Manual reset input | Logic-low assertion forces RESET active; internally pulled up to VCC via 63kΩ resistor; accepts 1μs minimum pulse width |
| 4 - VCC | Supply and monitor input | Power source and monitored rail; device functions down to 1.0V; internal divider samples this node to detect brownout |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed VTH | 4.63V with ±3.5% tolerance over full -40°C to +125°C range - eliminates need for external resistor network calibration |
| Guaranteed-minimum 140ms tRP | Ensures μP reset remains asserted long enough for oscillator stabilization and register initialization in demanding applications |
| Open-drain RESET with 6V rating | Enables direct interface to 3.3V, 5V, or mixed-voltage reset buses without level shifters or additional drivers |
| Internal MR pullup (63kΩ) | Reduces BOM count by eliminating external pullup resistor; supports momentary switch-to-ground manual reset with no debounce circuitry |
| Low ICC (5μA typ. at +25°C) | Minimizes quiescent power draw in always-on monitoring circuits, critical for battery-backed real-time clocks and sensors |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Power monitoring during mains interruption or backup battery switchover in programmable logic controllers. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET until VCC stabilizes above 4.63V and holds for ≥140ms post-recovery. Use Value: Prevents spurious μP execution during unstable rail transitions, ensuring deterministic state restoration after brownout. |
Use Scenario: Long-term environmental sensor nodes powered by coin-cell batteries with infrequent wake-up cycles. IC Role / Device Role / Timing Role: Low-current (5μA) voltage supervisor enabling multi-year operation while guaranteeing safe boot after cold-start or low-battery reset. Use Value: Eliminates external reset IC bias current overhead, extending usable battery life without compromising boot reliability. |
| Automotive Body Control Modules | Medical Diagnostic Handhelds |
Use Scenario: Monitoring 5V supply rails in under-dash ECUs exposed to wide thermal swings (-40°C to +125°C). IC Role / Device Role / Timing Role: High-temp qualified supervisor with ±3.5% VTH accuracy and 140ms timeout, ensuring consistent reset behavior across operating envelope. Use Value: Avoids firmware lockup due to marginal brownout detection drift, meeting ASIL-B functional safety prerequisites for non-safety-critical modules. |
Use Scenario: Portable ultrasound or glucose meter requiring guaranteed reset during battery insertion or USB power connect events. IC Role / Device Role / Timing Role: Manual reset input (MR) with 1μs pulse acceptance and internal 63kΩ pullup enables compact tactile button interface without external components. Use Value: Reduces board area and assembly cost while maintaining ESD-robust, noise-immune reset initiation per IEC 60601-1 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US46D3+T | Identical 4.63V threshold and 140ms timeout, but supports bidirectional reset pins - includes internal diode for μC-compatible reset pin drive | Required only when interfacing with microcontrollers specifying bidirectional reset I/O (e.g., certain ARM Cortex-M series) | Select MAX6314US46D3+T if the host μC requires active-pullup capability on its reset pin; otherwise MAX6315US47D3+T suffices for standard active-low reset inputs. |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.63V); 200ms min timeout; 1.6μA ICC; same SOT23-4 package but different pinout (RESET on Pin 1, GND on Pin 4) | Designed for 3.3V systems; incompatible pin mapping prevents drop-in replacement without PCB revision | Choose TPS3808G33DBVR only for new 3.3V designs prioritizing ultra-low ICC; MAX6315US47D3+T remains optimal for 5V brownout protection with proven thermal robustness. |
Compared with MAX6314US46D3+T and TPS3808G33DBVR, the MAX6315US47D3+T offers superior thermal stability (±3.5% VTH over -40°C to +125°C), precise 4.63V threshold matching legacy 5V μP requirements, and pinout compatibility with industry-standard SOT23 supervisory IC footprints - making it the preferred choice for retrofit and high-reliability 5V embedded systems.
Availability
MAX6315US47D3+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, long-lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX6315US47D3+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 MAX6315US47D3+T belongs to Analog Devices' precision supervisory IC product line, engineered specifically for reliable power-on reset, brownout detection, and manual reset integration in space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US47D3+T?
The MAX6315US47D3+T has a factory-trimmed nominal reset threshold voltage of 4.63V, with tolerance of ±3.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during manufacturing and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" with test conditions confirming accuracy across temperature and voltage extremes.
Does the MAX6315US47D3+T support operation below 2.5V supply?
Yes, the MAX6315US47D3+T operates with VCC as low as 1.0V, though its reset function remains active only while VCC exceeds 1.0V. The device continues to assert RESET until VCC rises above 4.63V and sustains the 140ms timeout - enabling robust brownout handling even during deep undervoltage conditions before complete power collapse.
Can the RESET output of the MAX6315US47D3+T be pulled up to 3.3V while VCC is at 5V?
Yes, the MAX6315US47D3+T RESET output is an open-drain structure rated for up to +6.0V, allowing it to be pulled up to 3.3V, 5V, or any intermediate voltage ≤6V regardless of VCC level. This enables level-shifting between supply domains - for example, using the MAX6315US47D3+T to monitor a 5V rail while driving a 3.3V μP reset input.
Is external debounce required for the MR input on the MAX6315US47D3+T?
No, external debounce is not required for the MR input on the MAX6315US47D3+T. The device incorporates internal glitch rejection of 100ns and accepts minimum MR pulse widths of 1μs. Its internal 63kΩ pullup resistor allows direct connection of a momentary switch to GND, simplifying mechanical reset implementation in compact designs.
What is the maximum allowable voltage on the RESET pin of the MAX6315US47D3+T?
The absolute maximum voltage on the RESET pin of the MAX6315US47D3+T is +6.0V, as specified in the Absolute Maximum Ratings table. This rating applies regardless of VCC level, enabling safe interface with higher-voltage logic families or mixed-supply reset buses - provided the external pullup resistor limits sink current to ≤20mA during assertion.
MAX6315US47D3+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:
- 4.7V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US47D3+T FAQ
1.How can I place an order for MAX6315US47D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US47D3+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 MAX6315US47D3+T reliable?
The price and inventory of MAX6315US47D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US47D3+T is usually 5 days.
3.What payment methods are accepted for MAX6315US47D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US47D3+T transactions.
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4.How is shipping managed for MAX6315US47D3+T?
MAX6315US47D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US47D3+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 MAX6315US47D3+T?
For technical support, including MAX6315US47D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US47D3+T requirements.
6.How does Aetrix verify that MAX6315US47D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US47D3+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 MAX6315US47D3+T meets industry standards.
7.What is the process for return or replacement of MAX6315US47D3+T?
All MAX6315US47D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US47D3+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 MAX6315US47D3+T part is unused and in its original packaging.
Return procedure for MAX6315US47D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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