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Analog Devices Inc./Maxim Integrated MAX6315US26D4-T
- Part No.:
- MAX6315US26D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US26D4-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,380
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Product details
Overview
MAX6315US26D4-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 provides a factory-trimmed 1120ms minimum reset timeout period, 5μA supply current at +25°C, and operates across -40°C to +125°C for use in battery-powered industrial controllers.
For engineers reviewing the MAX6315US26D4-T datasheet, MAX6315US26D4-T pinout, MAX6315US26D4-T application, or MAX6315US26D4-T equivalent, key selection criteria include its 2.63V reset threshold, 1120ms timeout, SOT23-4 package, open-drain RESET output compatible with voltages up to +6V, and guaranteed operation over extended temperature.
Technical Context
The MAX6315US26D4-T implements a precision voltage-monitoring comparator with factory-laser-trimmed resistive divider setting a nominal 2.63V reset threshold (±3.5% over -40°C to +125°C) and 60ppm/°C tempco. Its internal timer generates a fixed 1120ms minimum reset timeout after VCC recovery or MR deassertion.
It features an internally pulled-up manual reset input (63kΩ) with 100ns glitch rejection and 500ns MR-to-RESET delay, and an open-drain RESET output capable of sinking 3.2mA at VCC > 4.25V while supporting level-shifting up to +6V - enabling interface with higher-voltage logic domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±3.5% over -40°C to +125°C - ensures reliable brownout detection for 2.7V–3.3V systems |
| Reset Timeout Period | 1120ms min (at -40°C to +125°C) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 5μA typical at +25°C, ≤15μA max at +125°C - enables multi-year operation in coin-cell-powered devices |
| Operating Voltage Range | 1.0V to 5.5V - supports monitoring of low-voltage microcontrollers and legacy 5V logic |
| RESET Output Type | Open-drain n-channel MOSFET - allows pullup to any voltage ≤+6V, enabling level-shifted reset signaling |
| MR Input Pullup | 63kΩ internal resistor - eliminates external components for manual reset implementation |
| Temperature Range | -40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor embedded applications |
Pinout & Package
MAX6315US26D4-T is housed in a 4-pin SOT23 package (JEDEC MO-178AA), footprint-compatible with industry-standard 1.3mm × 2.9mm land pattern 90-0183. The device uses surface-mount reflow assembly and supports lead-free (RoHS-compliant) processing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND | Ground reference | Return path for internal circuitry and RESET sink current; must be low-impedance connection to system ground plane |
| RESET | Active-low open-drain output | Asserts logic-low during reset; requires external pullup (e.g., 10kΩ) to target logic supply (≤+6V); sinks up to 3.2mA |
| MR | Manual reset input | Logic-low assertion triggers reset; internally pulled up to VCC (63kΩ); accepts 1μs minimum pulse width |
| VCC | Supply and monitor input | Powers internal circuitry and feeds precision voltage divider; monitored for threshold violation; range 1.0V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.63V threshold | Eliminates external resistor network and calibration, reducing BOM count and board space in cost-sensitive designs |
| 1120ms minimum reset timeout | Ensures full initialization of slow-starting microcontrollers and peripherals before code execution resumes |
| Open-drain RESET with 6V tolerance | Enables direct interface with 5V or 3.3V μP reset inputs even when monitoring lower VCC rails (e.g., 1.8V) |
| 5μA quiescent current | Extends battery life in portable instrumentation and remote sensors where duty-cycled wake-up is critical |
| 100ns MR glitch rejection | Prevents spurious resets from EMI or switch bounce without requiring external RC filtering |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Programmable logic controller operating in factory environments with fluctuating 24VDC-derived 3.3V rails subject to load transients. IC Role / Device Role / Timing Role: Supervisory circuit monitoring 3.3V domain; asserts reset if rail dips below 2.63V during motor switching events. Use Value: Prevents firmware corruption during brownouts using 1120ms timeout - longer than typical I/O module boot sequences. | Use Scenario: Remote environmental sensor node powered by CR2032 coin cell, sampling every 10 minutes. IC Role / Device Role / Timing Role: Power supervisor ensuring clean MCU startup after cold start or battery replacement. Use Value: 5μA supply current minimizes standby drain; 2.63V threshold matches LiMnO₂ cell end-of-life voltage. |
| Automotive Telematics Module | Medical Point-of-Care Analyzer |
Use Scenario: Cellular-connected telematics unit mounted near engine bay, exposed to -40°C to +125°C ambient swings. IC Role / Device Role / Timing Role: High-temp qualified reset supervisor for ARM Cortex-M7 host MCU powered from 3.3V LDO. Use Value: Guaranteed operation across full AEC-Q100 Grade 0 range; 60ppm/°C tempco maintains threshold stability under thermal cycling. | Use Scenario: Portable blood glucose meter requiring FDA-compliant power-on self-test and fault-safe shutdown. IC Role / Device Role / Timing Role: Safety-critical reset generator ensuring deterministic boot state before assay sequence initiation. Use Value: Immunity to 100ns noise pulses prevents false resets during ESD events; open-drain output isolates reset domain from analog front-end supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811TEUS26D4-T | Pin-compatible but specifies only -40°C to +85°C operation; 2.63V threshold and 1120ms timeout identical | Limited to commercial/industrial ambient; unsuitable for under-hood or extended-temperature deployments | Select MAX811TEUS26D4-T only if full -40°C to +125°C qualification is not required and cost optimization is prioritized |
| TPS3808G33DBVR | 3.3V fixed threshold (not 2.63V); 1200ms timeout; 1.5μA typical ICC; supports watchdog function absent in MAX6315US26D4-T | Requires redesign if system brownout threshold must be precisely 2.63V; adds watchdog capability not needed in simple reset-only use cases | Choose TPS3808G33DBVR only when lower quiescent current or integrated watchdog functionality justifies threshold mismatch and layout change |
Compared with MAX811TEUS26D4-T and TPS3808G33DBVR, the MAX6315US26D4-T uniquely delivers 2.63V threshold accuracy across -40°C to +125°C with no additional components - making it optimal for high-reliability, temperature-extreme applications where pin compatibility alone is insufficient.
Availability
MAX6315US26D4-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive telematics modules, and medical point-of-care analyzers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US26D4-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 MAX6315US26D4-T belongs to the MAX63xx family of precision voltage supervisors, engineered specifically for robust power-monitoring in safety-critical and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US26D4-T?
The MAX6315US26D4-T has a factory-trimmed nominal reset threshold of 2.63V, with tolerance of ±3.5% over the full -40°C to +125°C operating temperature range. This value is laser-trimmed on-die and specified in the Ordering Information table of the official Analog Devices datasheet. The MAX6315US26D4-T does not support user-adjustable thresholds - all variants are preconfigured at manufacture.
Does the MAX6315US26D4-T require external components for basic reset functionality?
No, the MAX6315US26D4-T requires no external components for core supervision. Its internal 63kΩ MR pullup resistor eliminates need for an external pullup, and the open-drain RESET output only needs a single external pullup resistor (e.g., 10kΩ) to the target logic supply. No capacitors, resistors, or trimming networks are required - the MAX6315US26D4-T achieves full functionality in a 4-pin SOT23 footprint.
What is the guaranteed minimum reset timeout period for the MAX6315US26D4-T across temperature?
The MAX6315US26D4-T guarantees a minimum reset timeout period of 1120ms over the full -40°C to +125°C temperature range. At +25°C, typical timeout is 1570ms, and maximum is 2240ms. This extended duration ensures reliable reset hold-off for microcontrollers with long boot sequences, such as those initializing flash memory or complex peripherals - a key design requirement met by the MAX6315US26D4-T.
Can the RESET output of the MAX6315US26D4-T be pulled up to a voltage higher than its VCC supply?
Yes, the MAX6315US26D4-T's RESET output is an open-drain n-channel MOSFET rated for voltages up to +6.0V, independent of VCC. This allows pulling RESET up to 5V logic while monitoring a 1.8V or 2.5V VCC rail - enabling level-shifted reset signaling without translators. The MAX6315US26D4-T datasheet explicitly confirms this capability in both Absolute Maximum Ratings and Pin Description sections.
Is the MAX6315US26D4-T pin-compatible with the MAX811 series?
Yes, the MAX6315US26D4-T is pin-compatible with the MAX811 series in the SOT23-4 package, sharing identical pinout (VCC, MR, RESET, GND) and functional behavior. However, the MAX6315US26D4-T extends temperature range to +125°C versus MAX811's +85°C limit, and offers tighter reset threshold accuracy over temperature. Designers may drop in the MAX6315US26D4-T for upgraded thermal performance without PCB changes - provided the 2.63V threshold and 1120ms timeout meet system requirements.
MAX6315US26D4-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:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US26D4-T FAQ
1.How can I place an order for MAX6315US26D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US26D4-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 MAX6315US26D4-T reliable?
The price and inventory of MAX6315US26D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US26D4-T is usually 5 days.
3.What payment methods are accepted for MAX6315US26D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US26D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US26D4-T?
MAX6315US26D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US26D4-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 MAX6315US26D4-T?
For technical support, including MAX6315US26D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US26D4-T requirements.
6.How does Aetrix verify that MAX6315US26D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US26D4-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 MAX6315US26D4-T meets industry standards.
7.What is the process for return or replacement of MAX6315US26D4-T?
All MAX6315US26D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US26D4-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 MAX6315US26D4-T part is unused and in its original packaging.
Return procedure for MAX6315US26D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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