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Analog Devices Inc./Maxim Integrated MAX6315US30D4
- Part No.:
- MAX6315US30D4
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US30D4.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,703
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Product details
Overview
MAX6315US30D4 from Maxim Integrated 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 3.00V or when manual reset (MR) is asserted. It features a factory-trimmed 3.00V reset threshold, 1120ms minimum reset timeout period, 5µA supply current, -40°C to +125°C operating range, and SOT143 package. It is used in portable/battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6315US30D4 datasheet, MAX6315US30D4 pinout, MAX6315US30D4 application, or MAX6315US30D4 equivalent, key selection criteria include its precise 3.00V reset threshold, guaranteed 1120ms reset timeout at temperature extremes, open-drain output capable of level-shifting above VCC, immunity to short VCC transients, and compatibility with µP systems requiring manual reset capability.
Technical Context
The MAX6315US30D4 implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set the 3.00V reset threshold, and an internal timer that guarantees ≥1120ms reset assertion after VCC recovery or MR deassertion. Its open-drain RESET output uses an n-channel MOSFET switch, enabling pull-up to any voltage up to +6.0V - independent of VCC.
It integrates a 63kΩ internal pull-up on MR, allowing direct connection of a momentary switch to GND without external components. The device rejects VCC transients as short as 1µs when overdrive exceeds 20mV, and maintains reset assertion down to VCC = 1.0V, ensuring robust operation during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±3.5% (factory-laser-trimmed; ensures accurate power-fail detection at nominal 3.0V rails) |
| Reset Timeout Period | 1120ms minimum (guaranteed duration of active-low RESET after VCC rise or MR release; prevents premature µP startup) |
| Supply Current | 5µA typical at +25°C (enables multi-year battery life in portable monitoring systems) |
| Operating Temperature | -40°C to +125°C (supports automotive under-hood and industrial control environments) |
| RESET Output Type | Open-drain, rated to 6.0V (allows level-shifting to higher-voltage logic domains or shared reset buses) |
| VCC Operating Range | 1.0V to 5.5V (ensures valid reset assertion even during deep undervoltage conditions) |
| MR Input Threshold | 0.8V max VIH (ensures reliable manual reset activation with standard logic-low signals) |
Pinout & Package
SOT143 (4-pin, surface-mount) package with 1.3mm × 2.1mm footprint and 0.95mm height; lead-free and RoHS-compliant; tape-and-reel delivery only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry and RESET sink current; must be connected to system ground plane |
| 2 (RESET) | Active-low open-drain output | Drives low during reset; requires external pull-up resistor; can interface to logic supplies up to +6.0V |
| 3 (MR) | Manual reset input | Logic-low assertion forces RESET active; internal 63kΩ pull-up enables switch-to-GND implementation without external resistor |
| 4 (VCC) | Supply and monitor input | Powers device and provides monitored voltage source; internal divider compares against 3.00V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.00V reset threshold | Laser-trimmed to ±3.5% over -40°C to +125°C, eliminating calibration components and improving system-level voltage margin accuracy |
| 1120ms reset timeout | Guaranteed minimum delay ensures µP clocks, PLLs, and memory stabilize before release - critical for complex SoCs |
| Open-drain RESET with >VCC capability | Enables single reset line to coordinate multiple voltage domains (e.g., 3.3V µP + 5V I/O) without level translators |
| 5µA quiescent current | Reduces standby power in always-on battery systems - e.g., extends coin-cell life beyond 10 years in low-duty-cycle sensors |
| Immunity to 1µs VCC glitches | Rejects noise-induced dips via internal filtering, preventing spurious resets in electrically noisy industrial environments |
Applications
| Portable Medical Sensors | Industrial PLC Controllers |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters require reliable power-on initialization and brownout recovery without firmware intervention. IC Role / Device Role / Timing Role: Supervisory circuit asserting hardware reset to microcontroller upon battery insertion or voltage sag below 3.00V. Use Value: 5µA supply current extends CR2032 battery life to >5 years in sleep mode; 1120ms timeout ensures ADC reference and sensor bias circuits fully settle before µP execution. |
Use Scenario: Programmable logic controllers in factory automation must survive voltage sags on 24VDC field buses and maintain deterministic reset behavior. IC Role / Device Role / Timing Role: Monitors local 3.3V logic rail derived from switched-mode supply; asserts RESET during undervoltage events lasting >100ms. Use Value: ±3.5% threshold tolerance over temperature guarantees consistent trip point across -40°C to +70°C cabinet environments; MR pin allows front-panel reset button integration. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: BCMs powered from vehicle battery (9–16V) with LDO-regulated 3.3V domain must withstand load-dump transients and cold-crank undervoltage. IC Role / Device Role / Timing Role: Resets MCU during cranking-induced 3.0V brownouts; open-drain RESET pulled to 5V domain for CAN transceiver synchronization. Use Value: 1120ms timeout prevents repeated resets during prolonged cranking; ability to pull RESET to 5V enables simultaneous reset of µP and communication peripherals. |
Use Scenario: Revenue-grade electricity meters operate unattended for 15+ years and require fail-safe boot integrity after power interruption. IC Role / Device Role / Timing Role: Guarantees full reset of metrology SoC and secure bootloader when mains-derived 3.3V rail drops below 3.00V during grid flicker. Use Value: Factory-trimmed 3.00V threshold eliminates post-solder calibration; -40°C to +125°C rating supports operation inside sealed outdoor meter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US30D3-T | Same 3.00V threshold but 140ms minimum reset timeout (vs. 1120ms) | Suitable for faster-boot µPs where long reset hold time is unnecessary | Select when system startup timing budget is tight and 140ms suffices for clock stabilization |
| TLV803EB30DBZR | 3.00V threshold, 200ms timeout, push-pull RESET output (not open-drain), 1.8–6.0V VCC range | Lacks level-shifting capability; requires same-supply pull-up; lower temp range (-40°C to +125°C same, but no extended spec) | Choose for cost-sensitive designs needing basic reset without cross-rail coordination |
Compared with MAX6315US30D3-T and TLV803EB30DBZR, the MAX6315US30D4 uniquely combines ultra-long 1120ms reset hold time with open-drain level-shifting - making it optimal for safety-critical or multi-rail systems where deterministic, extended reset assertion and flexible bus interfacing are mandatory.
Availability
MAX6315US30D4 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC controllers, automotive body control modules, smart energy meters, and battery-backed data loggers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6315US30D4 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 and mixed-signal ICs for power management, sensing, and interface applications, with emphasis on high reliability and low power.
The MAX6315 family delivers highly accurate, low-quiescent-current supervisory circuits optimized for microprocessor reset in space-constrained, battery-operated, and harsh-environment systems - with factory-trimmed thresholds and guaranteed timeout periods.
FAQ
What is the exact reset threshold voltage for MAX6315US30D4?
The MAX6315US30D4 has a factory-laser-trimmed nominal reset threshold of 3.00V, with a tolerance of ±3.5% over the full -40°C to +125°C operating temperature range. This value is confirmed in the Electrical Characteristics table under "Reset Threshold (Note 1)" and corresponds to the "US30" suffix in the part number, indicating the 3.00V variant.
What is the guaranteed minimum reset timeout period for MAX6315US30D4?
The MAX6315US30D4 guarantees a minimum reset timeout period of 1120ms after VCC rises above the 3.00V threshold or after the manual reset (MR) input is deasserted. This value is specified in the Ordering Information table under "MIN tRP (ms)" for the "D4" suffix and is validated across temperature and process corners.
Can the RESET output of MAX6315US30D4 be pulled up to a voltage higher than VCC?
Yes, the MAX6315US30D4 features an open-drain RESET output rated to 6.0V, allowing it to be pulled up to any voltage between 0V and +6.0V - including voltages higher than the VCC supply. This enables level-shifting functionality, such as coordinating reset across multiple voltage domains (e.g., pulling RESET to 5V while monitoring a 3.3V VCC rail).
Does MAX6315US30D4 include internal pull-up on the MR pin?
Yes, the MAX6315US30D4 integrates a 63kΩ internal pull-up resistor on the MR pin, as documented in the Electrical Characteristics table under "MR Pull-Up Resistance". This allows direct connection of a momentary switch from MR to GND without external components, simplifying manual reset implementation in space-constrained designs.
What package type and environmental rating does MAX6315US30D4 use?
The MAX6315US30D4 is supplied in a SOT143 (4-pin) surface-mount package with dimensions 1.3mm × 2.1mm × 0.95mm. It is rated for operation from -40°C to +125°C and is available in both leaded and lead-free (RoHS-compliant) versions - the "-T" suffix denotes lead-free packaging, and tape-and-reel delivery is standard.
MAX6315US30D4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6315US30D4 FAQ
1.How can I place an order for MAX6315US30D4 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US30D4 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 MAX6315US30D4 reliable?
The price and inventory of MAX6315US30D4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US30D4 is usually 5 days.
3.What payment methods are accepted for MAX6315US30D4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US30D4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US30D4?
MAX6315US30D4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US30D4 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 MAX6315US30D4?
For technical support, including MAX6315US30D4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US30D4 requirements.
6.How does Aetrix verify that MAX6315US30D4 is sourced from the original manufacturer or authorized distributors?
All MAX6315US30D4 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 MAX6315US30D4 meets industry standards.
7.What is the process for return or replacement of MAX6315US30D4?
All MAX6315US30D4 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US30D4, 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 MAX6315US30D4 part is unused and in its original packaging.
Return procedure for MAX6315US30D4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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