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Analog Devices Inc./Maxim Integrated MAX6315US26D3+T
- Part No.:
- MAX6315US26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US26D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:8,801
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Product details
Overview
The MAX6315US26D3+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 factory-trimmed 2.63V threshold, 140ms minimum reset timeout, 5μA supply current, and operates across –40°C to +125°C for use in battery-powered industrial controllers.
For engineers reviewing the MAX6315US26D3+T datasheet, MAX6315US26D3+T pinout, MAX6315US26D3+T application, or MAX6315US26D3+T equivalent, key selection criteria include guaranteed over-temperature reset behavior, immunity to short VCC transients, open-drain output compatible with supplies up to +6V, and SOT23-4 space-constrained deployment.
Technical Context
The MAX6315US26D3+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider setting a nominal 2.63V reset threshold, ±3.5% over –40°C to +125°C. Its internal timer generates a fixed 140ms (min) reset timeout after VCC recovery or MR deassertion.
It uses an open-drain n-channel MOSFET for RESET output, enabling level-shifting across supply domains (e.g., monitoring +3.3V while pulling up to +5V), with guaranteed logic-low sink capability down to VCC = 1.0V and 0.3V VOL at 0.5mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V nominal, ±3.5% over full temperature range - ensures reliable brownout detection at defined supply margin |
| Reset Timeout Period | 140ms minimum - guarantees μP reset hold time sufficient for power stabilization and oscillator startup |
| Supply Current | 5μA typical at +25°C, ≤15μA at +125°C - enables multi-year operation in coin-cell–powered systems |
| Operating Voltage Range | 1.0V to 5.5V - supports wide-input monitoring including Li-ion and 3.3V/2.5V logic domains |
| RESET Output Type | Open-drain, rated to 6V - allows pullup to higher-voltage rails for mixed-supply reset coordination |
| MR Input Logic | Active-low with 63kΩ internal pullup - eliminates external components for manual reset switch interface |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive and industrial edge computing environments |
Pinout & Package
MAX6315US26D3+T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052), footprint-compatible with industry-standard 0.95mm pitch land pattern 90-0183.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and reset timer; must be low-impedance connection to system ground plane |
| 2 (RESET) | Active-low open-drain output | Sinks current during reset; requires external pullup resistor (typically 10kΩ) to target reset rail (≤6V) |
| 3 (MR) | Manual reset input | Logic-low assertion forces immediate reset; internally pulled up to VCC (63kΩ), so left floating if unused |
| 4 (VCC) | Supply and monitor input | Power source and monitored voltage node; internal divider samples this pin to detect undervoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed threshold | 2.63V ±3.5% over –40°C to +125°C eliminates calibration and reduces BOM count vs. discrete resistor-divider solutions |
| 140ms minimum reset timeout | Guarantees sufficient hold time for slow-starting oscillators and power-rail settling in embedded microcontrollers |
| Open-drain RESET with 6V rating | Enables single reset line to coordinate multiple voltage domains (e.g., 3.3V core + 5V I/O) without level translators |
| 5μA quiescent current | Supports >10-year battery life in always-on sensor nodes powered by CR2032 or similar primary cells |
| Immunity to short VCC transients | Rejects <100ns glitches and tolerates up to 60mV overdrive without spurious reset - improves noise resilience in motor-drive environments |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Programmable logic controller operating in factory-floor cabinets with fluctuating 24VDC-derived 3.3V rails and EMI from nearby VFDs. IC Role / Device Role / Timing Role: Supervisory circuit monitoring 3.3V domain; asserts reset on brownout or manual service interrupt. Use Value: Prevents firmware corruption during voltage sags caused by shared power distribution; 140ms timeout accommodates bulk capacitor recharge. | Use Scenario: Remote environmental sensor node logging temperature/humidity every 15 minutes using a CR2032 coin cell. IC Role / Device Role / Timing Role: Low-current voltage supervisor ensuring clean MCU boot after cold-start or battery replacement. Use Value: 5μA ICC extends battery life beyond 10 years; open-drain RESET allows direct interface to MCU's bidirectional reset pin. |
| Automotive Body Control Module | Medical Point-of-Care Monitor |
Use Scenario: Under-dash BCM exposed to –40°C winter start and +125°C engine-bay heat cycles, powered from vehicle battery via LDO. IC Role / Device Role / Timing Role: Reset generator monitoring post-LDO 3.3V rail; triggers safe state entry during ignition transients. Use Value: Guaranteed operation across full automotive temperature range; immunity to 100ns noise spikes prevents false resets during load-dump events. | Use Scenario: Portable patient monitor requiring FDA-grade reliability, powered from rechargeable Li-ion with strict power-up sequencing. IC Role / Device Role / Timing Role: Primary reset supervisor ensuring deterministic initialization of ARM Cortex-M4 host and analog front-end ASIC. Use Value: Factory-trimmed 2.63V threshold provides precise undervoltage lockout before critical ADC references fall out of spec. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US26D3+T | Bidirectional reset pin support; otherwise identical threshold, timeout, and package | Required only when interfacing with μCs having shared reset/input pins (e.g., some STM32 variants) | Select MAX6314US26D3+T if bidirectional reset pin compatibility is mandatory; otherwise MAX6315US26D3+T is optimal for standard active-low reset inputs. |
| TPS3808G125DBVR | 2.5V threshold, 200ms timeout, 1.5μA ICC, same SOT23-4 package | Lower threshold and longer timeout suit ultra-low-voltage SoCs; lower ICC benefits extreme low-power designs | Choose TPS3808G125DBVR for sub-2.6V supply monitoring or where <2μA ICC is critical; MAX6315US26D3+T remains preferred for 2.63V precision and proven transient immunity. |
Compared with MAX6314US26D3+T, the MAX6315US26D3+T offers simpler unidirectional reset control and identical performance for conventional μP interfaces; versus TPS3808G125DBVR, it delivers tighter threshold accuracy (±3.5% vs ±5%) and superior noise rejection at the cost of slightly higher ICC.
Availability
MAX6315US26D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive body control modules, and medical point-of-care monitors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US26D3+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 MAX6315 series belongs to Analog Devices' precision supervisory IC product line, engineered specifically for robust, low-power voltage monitoring and reset generation in mission-critical embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US26D3+T?
The MAX6315US26D3+T has a factory-trimmed nominal reset threshold of 2.63V, with tolerance of ±3.5% over the full operating temperature range of –40°C to +125°C. This value is laser-trimmed during production and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" with min/typ/max bounds referenced to the nominal voltage.
Does the MAX6315US26D3+T require external components for basic operation?
No, the MAX6315US26D3+T requires no external components for core supervision functionality. It integrates an internal 63kΩ pullup on the MR pin and needs only an external pullup resistor on the open-drain RESET pin (typically 10kΩ). No capacitors, resistors, or trimming networks are needed - simplifying layout and reducing BOM count.
Can the RESET output of the MAX6315US26D3+T be pulled up to a voltage higher than VCC?
Yes, the MAX6315US26D3+T RESET output is an open-drain structure rated to 6.0V, allowing it to be pulled up to any voltage between 0V and +6V - including rails higher than VCC (e.g., pullup to +5V while monitoring a +3.3V supply). This enables level-shifted reset signaling across mixed-voltage systems without additional translators.
What is the minimum reset timeout period for the MAX6315US26D3+T?
The MAX6315US26D3+T provides a minimum reset timeout period of 140ms, guaranteed over –40°C to +125°C. This value is fixed per device variant and confirmed in the Ordering Information table and Electrical Characteristics section under "Reset Timeout Period (tRP)" for D3 suffix parts.
Is the MAX6315US26D3+T pin-compatible with other members of the MAX6315 family?
Yes, all MAX6315 variants - including MAX6315US26D3+T - share identical 4-pin SOT23 packaging and pinout (VCC, MR, RESET, GND). Threshold voltage (e.g., 2.63V vs 3.00V) and timeout (D1/D2/D3/D4) are factory-configured; no PCB changes are required when substituting within the same package code.
MAX6315US26D3+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:
- Active
- 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US26D3+T FAQ
1.How can I place an order for MAX6315US26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US26D3+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 MAX6315US26D3+T reliable?
The price and inventory of MAX6315US26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6315US26D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US26D3+T transactions.
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4.How is shipping managed for MAX6315US26D3+T?
MAX6315US26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US26D3+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 MAX6315US26D3+T?
For technical support, including MAX6315US26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US26D3+T requirements.
6.How does Aetrix verify that MAX6315US26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US26D3+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 MAX6315US26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6315US26D3+T?
All MAX6315US26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US26D3+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 MAX6315US26D3+T part is unused and in its original packaging.
Return procedure for MAX6315US26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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