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Analog Devices Inc./Maxim Integrated MAX6315US26D2-T
- Part No.:
- MAX6315US26D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US26D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,362
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Product details
Overview
MAX6315US26D2-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 2.63V or upon manual reset assertion. It features a factory-trimmed 2.63V reset threshold, 20ms 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 embedded systems.
For engineers reviewing the MAX6315US26D2-T datasheet, MAX6315US26D2-T pinout, MAX6315US26D2-T application, or MAX6315US26D2-T equivalent, this device delivers precise brownout detection with temperature-stable reset timing, glitch-immune manual reset input, and level-shifting capability via its open-drain RESET output pulled above VCC.
Technical Context
The MAX6315US26D2-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set the 2.63V reset threshold, ±3.5% tolerance over -40°C to +125°C, and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 20ms reset pulse after VCC recovery or MR deassertion.
It features an integrated 63kΩ pullup on the MR pin, 100ns MR glitch rejection, and an open-drain RESET output capable of sinking 3.2mA at VCC > 4.25V while supporting pullup voltages up to +6.0V - enabling level-shifted reset signaling between disparate supply domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±3.5% over full temperature range - ensures reliable brownout detection for 2.7V–3.3V logic supplies. |
| Reset Timeout Period | 20ms minimum (D2 variant) - guarantees sufficient processor initialization time after power recovery. |
| Supply Current | 5μA typical at +25°C, ≤15μA at +125°C - enables multi-year operation in coin-cell–powered IoT endpoints. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and high-reliability embedded applications. |
| RESET Output Type | Open-drain n-channel MOSFET - allows pullup to any voltage ≤6.0V, enabling reset signal translation across supply domains. |
| MR Input Behavior | Internal 63kΩ pullup, 1μs minimum pulse width, 100ns glitch rejection - eliminates external components for robust manual reset. |
Pinout & Package
MAX6315US26D2-T is housed in a RoHS-compliant 4-pin SOT23 package (package code U4+1), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry and RESET sink current; must be connected directly to system ground plane. |
| 2 (RESET) | Active-low open-drain output | Asserts logic-low during reset; requires external pullup (e.g., 10kΩ) to target supply (≤6.0V); supports level shifting. |
| 3 (MR) | Manual reset input | Logic-low assertion triggers reset; internally pulled up to VCC (63kΩ); tolerant of noisy environments with optional 0.1μF bypass. |
| 4 (VCC) | Supply and monitor input | Powers device and provides monitored voltage source; valid from 1.0V to 5.5V; reset asserted when VCC < 2.63V. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.63V threshold | Eliminates external resistor dividers and calibration, reducing BOM count and layout area in μP reset circuits. |
| 20ms minimum timeout (D2 variant) | Ensures full microcontroller core and peripheral initialization before release, avoiding race conditions in boot sequences. |
| Open-drain RESET with 6V tolerance | Enables direct interfacing with 5V, 3.3V, or 1.8V reset inputs without level translators - simplifies multi-rail designs. |
| 5μA quiescent current | Extends battery life in always-on monitoring applications such as smart sensors and wearables operating from CR2032 cells. |
| Guaranteed operation down to 1.0V VCC | Permits reliable reset assertion during deep brownout events where supply collapses below 1.8V logic thresholds. |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Real-time control logic in programmable logic controllers exposed to wide ambient temperature swings and EMI-rich factory floors. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during 24V DC-DC converter undervoltage or transient-induced rail collapse. Use Value: Prevents corrupted state machine execution by guaranteeing ≥20ms reset hold time after 2.63V VCC recovery, even at +125°C. |
Use Scenario: Battery-powered ECG or SpO₂ monitors requiring multi-year operation on single coin cell with periodic wake-up cycles. IC Role / Device Role / Timing Role: Low-current voltage supervisor enabling safe boot only when main 3.0V LDO output stabilizes above 2.63V. Use Value: 5μA ICC extends CR2032 service life beyond 5 years in sleep mode while ensuring deterministic reset at cold start. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: Under-hood BCMs subjected to load-dump transients and thermal cycling from -40°C to +125°C. IC Role / Device Role / Timing Role: Reset generator immune to sub-100ns MR glitches and short VCC dips during alternator switching events. Use Value: 100ns MR glitch rejection and ±3.5% VTH tolerance prevent spurious resets during ISO 7637-2 pulse 5a/b stress testing. |
Use Scenario: Revenue-grade electricity meters deployed in outdoor enclosures with unregulated AC-DC supplies. IC Role / Device Role / Timing Role: Brownout detector for microcontroller powered from 3.3V buck converter fed by rectified AC line. Use Value: Open-drain RESET pulled to 5V logic rail ensures compatibility with legacy meter ASICs requiring 5V-tolerant reset inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811SEUS26D2+T | Same 2.63V threshold and 20ms timeout, but rated only to +85°C; 10μA max ICC at +85°C vs. 15μA for MAX6315US26D2-T at +125°C. | Limited to commercial-temperature industrial gateways; not suitable for under-hood or extended-temperature deployments. | Select MAX811SEUS26D2+T only if ambient operating temperature stays ≤+85°C and lower cost is prioritized over extended temp range. |
| TPS3808G26DBVR | 2.63V threshold with 20ms timeout, but push-pull RESET output (not open-drain); 1.4μA typical ICC at +25°C; supports 0.8V–6.0V VCC. | Requires redesign of RESET pullup network; lacks level-shifting capability; better suited for ultra-low-power sensor nodes than multi-supply systems. | Choose TPS3808G26DBVR when lowest possible quiescent current is critical and reset signal does not need cross-rail translation. |
Compared with MAX811SEUS26D2+T and TPS3808G26DBVR, the MAX6315US26D2-T uniquely combines extended temperature operation (-40°C to +125°C), open-drain level-shifting RESET, and proven immunity to automotive-grade transients - making it optimal for harsh-environment embedded control where reliability and signal flexibility are non-negotiable.
Availability
MAX6315US26D2-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US26D2-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 MAX6315US26D2-T belongs to the MAX63xx family of precision voltage supervisors - engineered specifically for fail-safe microprocessor reset generation in safety-critical and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6315US26D2-T?
The MAX6315US26D2-T has a nominal reset threshold of 2.63V, with ±2.5% tolerance over -40°C to +85°C and ±3.5% over -40°C to +125°C. This specification is factory-laser-trimmed and documented in the Electrical Characteristics table of the official Analog Devices datasheet Rev 7.
Does MAX6315US26D2-T support operation below 2.5V VCC?
Yes, the MAX6315US26D2-T operates with VCC as low as 1.0V and guarantees RESET assertion down to that level. Its internal circuitry remains functional and correctly asserts reset even when VCC drops below the 2.63V threshold into deep brownout conditions.
Can the RESET output of MAX6315US26D2-T be pulled up to 5V while VCC is at 3.3V?
Yes, the MAX6315US26D2-T RESET pin is open-drain and rated for voltages up to +6.0V, allowing safe pullup to 5V (or any voltage ≤6.0V) while VCC is at 3.3V - enabling level-shifted reset signaling between different supply domains without additional components.
What is the minimum pulse width required on the MR pin to trigger reset in MAX6315US26D2-T?
The MR input requires a minimum logic-low pulse width of 1μs to reliably assert reset. The device also provides 100ns glitch rejection, ensuring noise spikes shorter than 100ns on the MR line do not cause unintended reset events.
Is MAX6315US26D2-T pin-compatible with MAX811?
Yes, the MAX6315US26D2-T is explicitly stated in its datasheet to be pin-compatible with the MAX811 series. Both share identical 4-pin SOT23 pinout (VCC, MR, RESET, GND), enabling drop-in replacement in existing designs where extended temperature range or tighter VTH tolerance is needed.
MAX6315US26D2-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:
- 2.63V
- 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
MAX6315US26D2-T FAQ
1.How can I place an order for MAX6315US26D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US26D2-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 MAX6315US26D2-T reliable?
The price and inventory of MAX6315US26D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US26D2-T is usually 5 days.
3.What payment methods are accepted for MAX6315US26D2-T?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US26D2-T?
MAX6315US26D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US26D2-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 MAX6315US26D2-T?
For technical support, including MAX6315US26D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US26D2-T requirements.
6.How does Aetrix verify that MAX6315US26D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US26D2-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 MAX6315US26D2-T meets industry standards.
7.What is the process for return or replacement of MAX6315US26D2-T?
All MAX6315US26D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US26D2-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 MAX6315US26D2-T part is unused and in its original packaging.
Return procedure for MAX6315US26D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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