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Analog Devices Inc./Maxim Integrated MAX6315US30D2-G125
- Part No.:
- MAX6315US30D2-G125
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6315US30D2-G125.pdf
- Description:
- OPEN-DRAIN SOT MICROPROCESSOR
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Product details
Overview
MAX6315US30D2-G125 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, 20ms minimum reset timeout period, 5µA supply current at +25°C, -40°C to +125°C operating temperature range, and SOT143-4 package. It is used in portable battery-powered equipment for reliable power-up/power-down sequencing.
For engineers reviewing the MAX6315US30D2-G125 datasheet, MAX6315US30D2-G125 pinout, MAX6315US30D2-G125 application, or MAX6315US30D2-G125 equivalent, key selection criteria include its precise 3.00V reset threshold, 20ms timeout, open-drain output capable of level-shifting above VCC, immunity to short VCC transients, and guaranteed operation over automotive-grade temperature range.
Technical Context
The MAX6315US30D2-G125 implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set the 3.00V nominal reset threshold, with ±1.8% accuracy over -40°C to +125°C. Its internal timer generates a fixed 20ms (min) reset pulse after VCC rises above threshold or MR deasserts.
It uses an open-drain n-channel MOSFET for RESET output, enabling pull-up to any voltage up to +6.0V - independent of VCC - supporting level-shifted reset signaling across multiple supply domains. The MR input includes a 63kΩ internal pull-up and accepts logic-low pulses ≥1µs duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V nominal, ±1.8% over full temperature range - ensures deterministic brownout detection at defined supply rail |
| Reset Timeout Period | 20ms minimum - guarantees µP reset assertion long enough for stable clock and power stabilization |
| Supply Current | 5µA typical at +25°C - enables use in always-on battery-backed systems without significant drain |
| Operating Temperature | -40°C to +125°C - supports automotive under-hood and industrial embedded applications |
| RESET Output Type | Open-drain, rated to 6.0V - allows pull-up to higher-voltage rails (e.g., 5V) while monitoring 3.3V or 3.0V VCC |
| MR Input Behavior | Logic-low active, internally pulled up to VCC via 63kΩ - eliminates need for external pull-up; debounced by design |
| VCC Operating Range | 2.5V to 5.5V - compatible with 3.0V, 3.3V, and 5.0V digital systems |
Pinout & Package
SOT143-4 plastic surface-mount package (3.05mm × 1.75mm × 1.3mm), lead-free compliant, tape-and-reel packaging only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance connection to system ground plane |
| 2 RESET | Active-low open-drain output | Sinks current when asserted; requires external pull-up resistor (typically 10kΩ) to target reset rail (≤6.0V) |
| 3 MR | Manual reset input | Logic-low assertion forces RESET active; internally pulled up to VCC; no external components required |
| 4 VCC | Supply and monitored voltage input | Power source and reset threshold reference; monitored directly by internal precision voltage divider |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 3.00V ±1.8% over -40°C to +125°C - eliminates calibration and external resistor networks |
| Four selectable timeout periods | 20ms minimum for MAX6315US30D2-G125 - matches common µP reset timing requirements without external RC |
| Open-drain RESET with >VCC capability | Supports level-shifted reset signaling (e.g., monitor 3.0V VCC but drive 5V µP reset pin) - simplifies multi-rail designs |
| Immunity to short VCC transients | Rejects glitches ≤1µs at 100mV overdrive - prevents spurious resets during switching noise or ESD events |
| Low quiescent current | 5µA typical - extends battery life in portable and IoT edge nodes with always-active supervision |
Applications
| Portable Medical Devices | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meters and handheld diagnostic tools requiring guaranteed reset during cold-start or low-battery brownout. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to ARM Cortex-M0+ MCU upon VCC drop below 3.00V. Use Value: 20ms minimum timeout ensures complete flash initialization before code execution; 5µA current preserves 10-year shelf life in sealed units. |
Use Scenario: Under-dash control units exposed to wide ambient temperatures (-40°C to +125°C) and load-dump transients. IC Role / Device Role / Timing Role: Voltage supervisor monitoring 3.3V domain and generating robust reset signal for Infineon AURIX TC3xx microcontroller. Use Value: Guaranteed operation across full automotive temperature range and immunity to <1µs VCC dips eliminate false resets during alternator switching noise. |
| Industrial PLC I/O Modules | Smart Energy Meters |
|
Use Scenario: DIN-rail mounted I/O expansion modules powered from isolated 3.3V DC-DC converters with variable line regulation. IC Role / Device Role / Timing Role: Reset generator ensuring deterministic startup of TI Sitara AM335x processor after power-on or brownout recovery. Use Value: Open-drain RESET pulled up to 5V logic rail enables clean reset coordination across mixed-voltage subsystems without level translators. |
Use Scenario: Revenue-grade electricity meters with tamper detection and long-term battery backup (10+ years). IC Role / Device Role / Timing Role: Low-power supervisor monitoring main 3.0V supply and triggering secure boot reset on undervoltage condition. Use Value: 5µA supply current minimizes self-discharge of backup coin cell; 3.00V threshold aligns precisely with LiSOCl₂ battery end-of-life voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US30D1-G125 | Same 3.00V threshold and -40°C to +125°C rating, but 1ms minimum reset timeout instead of 20ms | Suitable for fast-boot µPs (e.g., RISC-V cores) where minimal reset hold time is required | Select when system clock stabilization completes in <1ms; not suitable for legacy ARM or x86 requiring longer reset assertion |
| TPS3808G30DBVR | 3.0V threshold, 20ms timeout, but push-pull RESET output (not open-drain); 1.5µA typical ICC | Lacks level-shifting capability; requires same-voltage-domain reset signaling | Choose for ultra-low-power designs where RESET rail matches VCC and no cross-rail signaling is needed |
Compared with MAX6315US30D1-G125, the MAX6315US30D2-G125 provides longer reset assertion for slower peripherals; compared with TPS3808G30DBVR, it enables flexible multi-supply reset coordination via open-drain architecture but consumes slightly higher quiescent current.
Availability
MAX6315US30D2-G125 is available at Aetrix Electronics and suitable for portable medical devices, automotive body control modules, industrial PLC I/O modules, smart energy meters, and other applications requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6315US30D2-G125 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 high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, communications, and computing applications.
The MAX6315 family delivers precision, low-power microprocessor supervisory circuits with factory-trimmed thresholds and fixed timeout periods - engineered for reliability in battery-powered, automotive, and industrial embedded systems where deterministic reset behavior is critical.
FAQ
What is the exact reset threshold voltage for MAX6315US30D2-G125?
The MAX6315US30D2-G125 has a factory-trimmed nominal reset threshold of 3.00V, with tolerance of ±1.8% 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 actual threshold remains stable across voltage and temperature variations, ensuring consistent brownout detection in the MAX6315US30D2-G125.
Does MAX6315US30D2-G125 support level-shifting for the RESET output?
Yes, the MAX6315US30D2-G125 features an open-drain RESET output rated to 6.0V, allowing it to be pulled up to a voltage higher than its VCC supply - for example, monitoring a 3.0V rail while driving a 5.0V microprocessor reset input. This level-shifting capability eliminates the need for external translators and is intrinsic to the MAX6315US30D2-G125's output structure.
What is the minimum reset timeout period specified for MAX6315US30D2-G125?
The MAX6315US30D2-G125 provides a minimum reset timeout period of 20ms after VCC rises above the 3.00V threshold or after the manual reset (MR) input is deasserted. This guaranteed minimum ensures sufficient time for power supply stabilization and oscillator startup in most microprocessors, and is fixed internally - no external components are required to set this timing in the MAX6315US30D2-G125.
Can the MR pin of MAX6315US30D2-G125 be left unconnected?
Yes, the MR pin of MAX6315US30D2-G125 has an internal 63kΩ pull-up resistor to VCC, so it may be left floating if manual reset functionality is not required. When unused, the MR pin defaults to logic-high, and reset assertion depends solely on VCC monitoring. If used, a momentary switch to GND suffices - no external debounce circuitry is needed due to built-in glitch rejection in the MAX6315US30D2-G125.
Is MAX6315US30D2-G125 qualified for automotive temperature range?
Yes, the MAX6315US30D2-G125 is fully specified and guaranteed over -40°C to +125°C, meeting the extended temperature requirements for automotive under-hood and industrial control applications. Its electrical characteristics - including reset threshold accuracy, timeout stability, and supply current - are validated across this full range, confirming suitability for deployment in harsh environments where the MAX6315US30D2-G125 operates reliably.
MAX6315US30D2-G125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6315US30D2-G125 FAQ
1.How can I place an order for MAX6315US30D2-G125 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US30D2-G125 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 MAX6315US30D2-G125 reliable?
The price and inventory of MAX6315US30D2-G125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US30D2-G125 is usually 5 days.
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MAX6315US30D2-G125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US30D2-G125 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 MAX6315US30D2-G125?
For technical support, including MAX6315US30D2-G125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US30D2-G125 requirements.
6.How does Aetrix verify that MAX6315US30D2-G125 is sourced from the original manufacturer or authorized distributors?
All MAX6315US30D2-G125 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 MAX6315US30D2-G125 meets industry standards.
7.What is the process for return or replacement of MAX6315US30D2-G125?
All MAX6315US30D2-G125 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US30D2-G125, 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 MAX6315US30D2-G125 part is unused and in its original packaging.
Return procedure for MAX6315US30D2-G125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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