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Analog Devices Inc./Maxim Integrated MAX6315US40D1+T
- Part No.:
- MAX6315US40D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US40D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,856
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Product details
Overview
MAX6315US40D1+T from Analog Devices is a low-power CMOS microprocessor supervisory circuit that monitors VCC supply voltage and asserts an open-drain RESET signal when voltage falls below 4.0V (±3.5% over -40°C to +125°C) or upon manual reset assertion; it guarantees reset timeout of 1ms (min), consumes only 5μA at 5.5V, and operates in a 4-pin SOT23 package for space-constrained embedded power monitoring.
For engineers reviewing the MAX6315US40D1+T datasheet, MAX6315US40D1+T pinout, MAX6315US40D1+T application, or MAX6315US40D1+T equivalent, this device serves as a precision voltage-monitoring reset supervisor with factory-trimmed threshold, temperature-stable timing, glitch-immune manual reset, and level-shifting open-drain output suitable for battery-powered μP systems requiring reliable brownout detection.
Technical Context
The MAX6315US40D1+T implements a precision bandgap-based voltage comparator with laser-trimmed resistive divider to set nominal 4.0V reset threshold, and integrates a monolithic RC timer for fixed 1ms minimum reset timeout period. Its internal MR pullup resistor (63kΩ) eliminates external components for manual reset functionality.
Designed for single-supply operation from 1.0V to 5.5V, the device features guaranteed reset assertion down to VCC = 1V, open-drain RESET output rated to sink 3.2mA at VCC > 4.25V, and immunity to transients ≤100ns-enabling robust operation in noisy industrial and portable environments without external debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.0V ±3.5% over full -40°C to +125°C range; ensures accurate brownout detection across automotive/industrial temperature extremes |
| tRP Min | 1ms minimum reset timeout; guarantees sufficient processor initialization time after power recovery |
| ICC | 5μA typical at 5.5V; enables multi-year battery life in always-on portable instrumentation |
| RESET Output | Open-drain n-channel MOSFET; supports level-shifting up to +6V pullup, enabling reset signaling across mixed-voltage domains |
| MR Input | Internal 63kΩ pullup; allows direct connection of momentary switch to GND-no external resistor required |
| VCC Range | 1.0V to 5.5V operating supply; compatible with 1.8V, 3.3V, and 5V logic systems without auxiliary biasing |
Pinout & Package
Package: 4-pin SOT23 (U4+1), footprint-compatible with industry-standard 1.3mm × 2.9mm outline, RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - GND | Ground reference | Common return path for internal comparator and timer; must be connected directly to system ground plane |
| 2 - RESET | Active-low open-drain output | Sinks current during reset; requires external pullup (e.g., 10kΩ) to any voltage ≤6V-supports level-shifted reset signaling |
| 3 - MR | Manual reset input | Logic-low assertion forces immediate reset; internal 63kΩ pullup enables NC default; 1μs minimum pulse width |
| 4 - VCC | Supply and monitor input | Powers IC and provides monitored voltage source; internal divider samples this node to detect undervoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.0V threshold | Eliminates external resistor network and calibration; achieves ±3.5% accuracy over full industrial temperature range |
| 1ms minimum reset timeout | Ensures μP completes power-up sequence before release; avoids premature code execution during supply ramp |
| Open-drain RESET with 6V tolerance | Enables reset signaling to higher-voltage logic domains (e.g., 5V μP reset line powered from 3.3V VCC rail) |
| 5μA supply current | Reduces quiescent load on battery or energy-harvesting sources; extends operational lifetime in always-on sensors |
| MR internal pullup (63kΩ) | Removes need for external pullup resistor; simplifies BOM and PCB layout for pushbutton reset implementation |
Applications
| Battery-Powered Data Loggers | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Long-term environmental monitoring using coin-cell or Li-ion battery with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring clean μP boot after brownout caused by battery sag under load. Use Value: 5μA ICC and 4.0V threshold prevent false resets during shallow discharge while guaranteeing restart at critical low-voltage point. | Use Scenario: DIN-rail mounted programmable logic controller with isolated 24V DC input powering 3.3V logic subsystems. IC Role / Device Role / Timing Role: VCC monitor for 3.3V domain; generates reset pulse on 24V supply ripple-induced dips. Use Value: Immunity to <100ns transients and 1ms timeout ensure stable operation despite EMI-coupled noise on shared power rails. |
| Medical Wearable Sensors | Automotive Body Control Modules |
Use Scenario: Ultra-low-power ECG patch with Bluetooth LE transmission triggered by motion detection. IC Role / Device Role / Timing Role: Reset supervisor for ARM Cortex-M0+ MCU; asserts RESET during battery voltage drop below 4.0V. Use Value: Open-drain RESET pulled to 5V BLE radio supply enables synchronized reset of both MCU and radio without additional level shifters. | Use Scenario: 12V vehicle battery-supplied lighting control unit operating from -40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-temperature-stable reset generator monitoring 5V LDO output feeding microcontroller. Use Value: Guaranteed operation and ±3.5% VTH stability over full automotive temperature range prevent spurious resets during cold cranking or hot soak. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811TEUS46+T | Same 4.63V threshold but 20ms timeout; no 4.0V option; pin-compatible SOT23-4 | Designed for longer reset hold times in systems with slower power-up sequencing | Select if 20ms timeout better matches target μP's reset timing requirements |
| TPS3808G12DBVR | 4.0V threshold with adjustable 20ms–3.2s timeout via capacitor; 1.5μA ICC; SOT23-5 | Requires external timing capacitor; lower ICC but larger footprint and design overhead | Choose when extended timeout flexibility justifies added component and layout complexity |
Compared with MAX811TEUS46+T and TPS3808G12DBVR, the MAX6315US40D1+T delivers exact 4.0V threshold with minimal 1ms timeout and lowest BOM count-ideal for cost-sensitive, space-constrained designs where fixed short-duration reset suffices.
Availability
MAX6315US40D1+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLCs, medical wearables, and automotive body electronics requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6315US40D1+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.
The MAX6315US40D1+T belongs to the MAX63xx family of precision μP supervisory circuits, engineered specifically for low-power, high-accuracy voltage monitoring and reset generation in space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US40D1+T?
The MAX6315US40D1+T has a factory-trimmed nominal reset threshold of 4.0V, with tolerance of ±3.5% over the full -40°C to +125°C operating temperature range. This value is laser-trimmed during manufacturing and does not require external calibration. The MAX6315US40D1+T maintains this accuracy without drift compensation circuitry, making it suitable for applications demanding stable undervoltage detection across extreme temperatures.
Does the MAX6315US40D1+T require an external pullup resistor on the RESET pin?
Yes, the MAX6315US40D1+T features an open-drain RESET output and requires an external pullup resistor to establish a valid high logic level. A 10kΩ resistor pulled to any voltage between 0V and +6V is typically sufficient. The MAX6315US40D1+T's RESET pin can be pulled up to a voltage higher than its own VCC-enabling level-shifted reset signaling in mixed-supply systems without additional interface components.
What is the minimum reset timeout period specified for the MAX6315US40D1+T?
The MAX6315US40D1+T is configured with a minimum reset timeout period of 1ms, as indicated by the "D1" suffix in its part number. This value is guaranteed over the full -40°C to +125°C temperature range and ensures the microprocessor receives a sufficiently long reset pulse to complete power-up initialization before releasing the reset state. The MAX6315US40D1+T uses an internal RC timer to achieve this fixed duration without external components.
Can the MAX6315US40D1+T operate with VCC below 2.5V?
Yes, the MAX6315US40D1+T operates across a VCC range of 1.0V to 5.5V, fully specified from -40°C to +125°C. It guarantees RESET assertion down to VCC = 1V, allowing reliable brownout detection even during deep battery discharge. The MAX6315US40D1+T maintains functional reset behavior and 5μA supply current performance at 1.0V, supporting ultra-low-voltage applications such as energy-harvesting sensor nodes.
Is manual reset functionality available on the MAX6315US40D1+T, and how is it implemented?
Yes, the MAX6315US40D1+T includes a debounced manual reset input (MR) that asserts RESET when pulled low. It features an internal 63kΩ pullup resistor, so MR may be left unconnected if unused. A normally open momentary switch between MR and GND provides full manual reset capability without external components. The MAX6315US40D1+T specifies 1μs minimum MR pulse width and 100ns glitch rejection, ensuring noise immunity in electrically harsh environments.
MAX6315US40D1+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:
- 4V
- 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
MAX6315US40D1+T FAQ
1.How can I place an order for MAX6315US40D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US40D1+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 MAX6315US40D1+T reliable?
The price and inventory of MAX6315US40D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US40D1+T is usually 5 days.
3.What payment methods are accepted for MAX6315US40D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US40D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US40D1+T?
MAX6315US40D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US40D1+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 MAX6315US40D1+T?
For technical support, including MAX6315US40D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US40D1+T requirements.
6.How does Aetrix verify that MAX6315US40D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US40D1+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 MAX6315US40D1+T meets industry standards.
7.What is the process for return or replacement of MAX6315US40D1+T?
All MAX6315US40D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US40D1+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 MAX6315US40D1+T part is unused and in its original packaging.
Return procedure for MAX6315US40D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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