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Analog Devices Inc./Maxim Integrated MAX6315US26D1-T
- Part No.:
- MAX6315US26D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US26D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,618
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Product details
Overview
The MAX6315US26D1-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, 1ms minimum reset timeout period, 5μA supply current at +25°C, and operates across -40°C to +125°C for use in battery-powered microcontroller systems requiring reliable power-on reset.
For engineers reviewing the MAX6315US26D1-T datasheet, MAX6315US26D1-T pinout, MAX6315US26D1-T application, or MAX6315US26D1-T equivalent, this device delivers precision voltage monitoring with temperature-stable reset timing, immunity to short VCC transients, and level-shifting capability via its open-drain RESET output-key considerations for embedded system reliability validation and BOM optimization.
Technical Context
The MAX6315US26D1-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistors to set a nominal 2.63V reset threshold, with ±3.5% tolerance over -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 1ms (min) reset timeout after VCC recovery or MR deassertion.
It uses an open-drain n-channel MOSFET for the RESET output, enabling pullup to any voltage ≤6V-including supplies higher than VCC-while guaranteeing logic-low output down to VCC = 1.0V. The MR input includes a 63kΩ internal pullup and rejects glitches <100ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±3.5% over -40°C to +125°C - ensures accurate brownout detection for 2.7V–3.3V logic domains |
| Reset Timeout Period | 1ms minimum - provides sufficient hold time for microcontroller initialization without excessive boot delay |
| Supply Current | 5μA typical at +25°C, ≤15μA at +125°C - enables multi-year operation in coin-cell-powered IoT endpoints |
| Operating Voltage Range | 1.0V to 5.5V - supports operation during deep brownout and compatibility with 1.8V/2.5V/3.3V/5V systems |
| RESET Output Type | Open-drain, 0.4V max VOL at 3.2mA sink - allows level-shifting and wired-OR reset bus configurations |
| MR Input Threshold | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC - ensures robust noise margin for manual reset signals across supply voltages |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
Package: 4-pin SOT23 (U4+1), 1.3mm × 2.9mm footprint, RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance connection to system ground plane |
| RESET (Pin 2) | Active-low open-drain output | Drives reset line low; requires external pullup (e.g., 10kΩ) to target supply (≤6V); supports voltage translation between domains |
| MR (Pin 3) | Manual reset input | Logic-low assertion triggers reset; internally pulled up to VCC (63kΩ); debounced internally-no external RC needed |
| VCC (Pin 4) | Supply and monitor input | Powers device and feeds internal voltage divider; monitored continuously for threshold violation; valid from 1.0V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.63V threshold | Eliminates external resistor network and calibration, reducing BOM count and layout area in space-constrained SOT23 designs |
| 1ms minimum reset timeout | Guarantees microcontroller core and peripherals are held in reset long enough for stable clock and supply establishment |
| Open-drain RESET with >VCC pullup | Enables reset assertion on 5V logic while monitoring a 3.3V rail-critical for mixed-voltage SoC power sequencing |
| 63kΩ internal MR pullup | Permits direct connection of momentary switch to GND without external components, simplifying front-panel reset implementation |
| 100ns MR glitch rejection | Prevents spurious resets from ESD or EMI coupling on reset lines in noisy industrial enclosures |
Applications
| Battery-Powered IoT Sensor Node | Automotive Body Control Module |
|---|---|
Use Scenario: A wireless temperature sensor powered by CR2032 coin cell must retain state across intermittent wake-ups and survive voltage sag during RF transmission. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during VCC drop below 2.63V to prevent firmware corruption during brownout. Use Value: 5μA quiescent current extends battery life beyond 5 years; 1ms timeout ensures clean restart without delaying sensor sampling cycle. | Use Scenario: Microcontroller in door module monitors window motor, lock actuator, and ambient light sensor across wide temperature and load variations. IC Role / Device Role / Timing Role: Power-on and brownout reset generator with guaranteed operation from -40°C to +125°C and immunity to 100ns noise spikes. Use Value: Factory-trimmed 2.63V threshold matches 2.7V LDO output tolerance; open-drain RESET interfaces directly to 5V CAN transceiver reset pin. |
| Industrial PLC I/O Expansion Card | Medical Portable Diagnostic Device |
Use Scenario: Hot-swap I/O card inserted into backplane experiences transient VCC dip during connector mating and must avoid partial initialization. IC Role / Device Role / Timing Role: Reset supervisor detecting sub-threshold VCC events and holding µC in reset until rail stabilizes for ≥1ms. Use Value: Immunity to 35μs VCC falling-edge delay and 100mV comparator overdrive ensures no false resets during hot-plug transients. | Use Scenario: Handheld ultrasound probe with dual-supply FPGA (1.2V core, 3.3V I/O) requires coordinated reset assertion across voltage domains. IC Role / Device Role / Timing Role: Single-point reset source using open-drain output pulled to 3.3V to drive both FPGA's PROG_B and microcontroller's RESET_N. Use Value: Level-shift capability eliminates need for discrete level translators; 60ppm/°C tempco maintains threshold accuracy across clinical operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US26D1-T | Bidirectional reset pin architecture; supports µC reset pin that can drive or sense reset state | Required where host µC implements reset acknowledgment or watchdog handshake protocols | Select MAX6314US26D1-T only if bidirectional reset signaling is explicitly required; otherwise MAX6315US26D1-T offers lower cost and simpler interface |
| TPS3808G12DBVR | Adjustable reset threshold via external resistor divider; 2% accuracy vs. MAX6315's ±3.5%; 350nA quiescent current | Suitable for ultra-low-power designs where threshold flexibility outweighs fixed-voltage simplicity | Choose TPS3808G12DBVR when precise threshold tuning or sub-μA supply current is mandatory; MAX6315US26D1-T preferred for production stability and zero-calibration design |
Compared with MAX6314US26D1-T, the MAX6315US26D1-T provides unidirectional reset assertion with superior transient immunity and simpler layout; versus TPS3808G12DBVR, it trades adjustability and ultra-low ICC for guaranteed factory-trimmed accuracy and proven automotive-qualified performance across full temperature range.
Availability
MAX6315US26D1-T is available at Aetrix Electronics and suitable for battery-powered IoT sensors, automotive body control modules, industrial PLC I/O cards, and portable medical diagnostics requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6315US26D1-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 MAX6315US26D1-T belongs to the MAX63xx family of precision voltage supervisors, designed specifically for reliable power-on and brownout reset generation in space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US26D1-T?
The MAX6315US26D1-T has a factory-trimmed nominal reset threshold of 2.63V, with tolerance of ±3.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during manufacturing and does not require external calibration. The MAX6315US26D1-T datasheet specifies 2.63V as the nominal VTH, confirmed in the Ordering Information table and Electrical Characteristics section.
Does the MAX6315US26D1-T support operation below 2.0V?
Yes, the MAX6315US26D1-T operates down to 1.0V supply voltage, and its RESET output remains functional (guaranteed logic-low) even when VCC drops to 1.0V. This enables brownout detection and controlled shutdown in ultra-low-voltage systems such as energy-harvesting nodes. The MAX6315US26D1-T electrical characteristics confirm VCC range of 1.0V to 5.5V across all temperatures.
Can the RESET output of the MAX6315US26D1-T be pulled up to a voltage higher than VCC?
Yes, the MAX6315US26D1-T features an open-drain RESET output rated for up to +6.0V, allowing pullup to supplies higher than VCC (e.g., pulling RESET to 5V while monitoring a 3.3V rail). This enables level-shifting and shared reset buses across mixed-voltage domains. The MAX6315US26D1-T Absolute Maximum Ratings specify RESET pin voltage range as -0.3V to +6.0V.
What is the minimum reset timeout period for the MAX6315US26D1-T?
The MAX6315US26D1-T has a minimum reset timeout period of 1ms, specified over -40°C to +125°C. This value is fixed per device variant and confirmed in the Electrical Characteristics table under tRP for "MAX6315US_ _D1-T". The actual timeout may extend up to 2ms depending on temperature and process variation, but will never fall below 1ms.
Is external debounce required for the MR input on the MAX6315US26D1-T?
No, external debounce is not required for the MR input on the MAX6315US26D1-T. The device includes internal debounce circuitry and rejects glitches shorter than 100ns. A normally open momentary switch connected directly from MR to GND suffices. The MAX6315US26D1-T datasheet explicitly states "external debounce circuitry is not required" and confirms 100ns glitch rejection in the Electrical Characteristics table.
MAX6315US26D1-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:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US26D1-T FAQ
1.How can I place an order for MAX6315US26D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US26D1-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 MAX6315US26D1-T reliable?
The price and inventory of MAX6315US26D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US26D1-T is usually 5 days.
3.What payment methods are accepted for MAX6315US26D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US26D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US26D1-T?
MAX6315US26D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US26D1-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 MAX6315US26D1-T?
For technical support, including MAX6315US26D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US26D1-T requirements.
6.How does Aetrix verify that MAX6315US26D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US26D1-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 MAX6315US26D1-T meets industry standards.
7.What is the process for return or replacement of MAX6315US26D1-T?
All MAX6315US26D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US26D1-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 MAX6315US26D1-T part is unused and in its original packaging.
Return procedure for MAX6315US26D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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