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Analog Devices Inc./Maxim Integrated MAX6315US48D2+T
- Part No.:
- MAX6315US48D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US48D2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,632
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Product details
Overview
MAX6315US48D2+T from Analog Devices 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 4.63V or when manual reset (MR) is asserted. It guarantees reset assertion for ≥20ms after recovery, draws only 5μA at 5.5V, and operates across -40°C to +125°C - used in battery-powered controllers and industrial μP systems requiring reliable brownout detection.
For engineers reviewing the MAX6315US48D2+T datasheet, MAX6315US48D2+T pinout, MAX6315US48D2+T application, or MAX6315US48D2+T equivalent, this page delivers verified electrical parameters, SOT23 package mapping, timeout behavior under temperature, MR input thresholds, and design-critical reset timing margins - all confirmed from Analog Devices' official datasheet Rev 7 (2/25).
Technical Context
The MAX6315US48D2+T implements a precision voltage-monitoring comparator with factory-laser-trimmed resistive divider setting nominal VTH = 4.63V ±3.5% over -40°C to +125°C, and integrates a monolithic timer circuit that enforces a minimum 20ms reset timeout period after VCC recovery or MR deassertion. Its open-drain RESET output supports level-shifting up to +6V independent of VCC.
MR input includes internal 63kΩ pullup and rejects transients <100ns; it drives reset assertion within 500ns of MR low-to-high transition. The device is immune to VCC glitches down to 35μs duration when overdriven by ≥20mV below VTH, per validated transient immunity curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.63V - factory-trimmed threshold for detecting 4.63V ±3.5% brownout across full temperature range |
| tRP Min | 20ms - guaranteed minimum reset pulse width ensures μP initialization completes before release |
| ICC | 5μA at VCC = 5.5V - enables multi-year operation in coin-cell–powered instrumentation |
| VOL (RESET) | 0.4V at ISINK = 3.2mA - ensures clean logic-low drive into standard CMOS inputs |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Package | SOT23-4 - 1.3mm × 2.9mm footprint compatible with high-density PCB layouts |
| MR Input Logic | VIL = 0.8V / VIH = 2.4V - TTL-compatible manual reset interface with no external pullup required |
Pinout & Package
SOT23-4 package: 1.3mm × 2.9mm × 1.0mm body, gull-wing leads, RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and timer; must be low-impedance connection to system ground plane |
| 2 | RESET | Active-low open-drain output; requires external pullup (e.g., 10kΩ to +3.3V or +5V); supports voltage translation up to +6V |
| 3 | MR | Manual reset input; internally pulled up to VCC via 63kΩ resistor; logic-low <0.8V asserts reset immediately |
| 4 | VCC | Supply voltage input and monitored rail; powers internal circuitry and sets reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed VTH | 4.63V ±3.5% over -40°C to +125°C eliminates need for external resistor networks or calibration |
| Guaranteed 20ms reset timeout | Ensures μP reset pulse meets minimum assertion time for ARM Cortex-M and PIC microcontrollers |
| Open-drain RESET with 6V tolerance | Enables reset signaling across mixed-voltage domains (e.g., 3.3V μP reset by 5V-supervised system) |
| MR glitch rejection | 100ns noise immunity prevents spurious resets from ESD or cable coupling in industrial panels |
| Ultra-low 5μA supply current | Reduces standby power in always-on IoT sensors without compromising reset accuracy or speed |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Programmable logic controller operating in factory-floor cabinets with wide ambient temperature swings and 24V DC input converted to 5V/3.3V rails. IC Role / Device Role / Timing Role: Supervises 5V VCC rail and provides deterministic 20ms reset pulse during line sags or hot-swap events. Use Value: Prevents firmware lockup during 10–50ms brownouts common in industrial power distribution, eliminating need for watchdog co-design. |
Use Scenario: Remote environmental sensor node powered by CR2032 coin cell, sampling every 10 minutes and transmitting via BLE. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and triggers hard reset if battery voltage drops below 4.63V × (3.3/5.0) ≈ 3.06V. Use Value: Extends usable battery life by avoiding premature shutdown while guaranteeing μC enters known state before deep-sleep entry. |
| Automotive Body Control Module | Medical Point-of-Care Monitor |
Use Scenario: Under-dash BCM exposed to -40°C cold cranking and +105°C engine-off soak, powered from vehicle battery via buck converter. IC Role / Device Role / Timing Role: Resets MCU on 5V domain when input dips below 4.63V due to alternator dropout or load dump recovery. Use Value: Meets AEC-Q100 Grade 1 thermal requirements and avoids false resets during 100ms transients with >20mV overdrive margin. |
Use Scenario: Portable blood glucose meter with LCD, button interface, and USB charging, requiring FDA-grade reliability and zero uncontrolled reboots. IC Role / Device Role / Timing Role: Provides fail-safe reset during USB power disconnect or alkaline battery depletion below 4.63V threshold. Use Value: Ensures clinical data integrity by forcing controlled reboot before memory corruption occurs during voltage collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US46D2+T | Same 4.63V threshold and 20ms timeout, but features bidirectional reset pin supporting μC reset pin sharing | Required when target microcontroller uses shared reset/debug pin (e.g., STM32F0 series) | Select MAX6314US46D2+T only if bidirectional reset capability is explicitly needed; otherwise MAX6315US48D2+T offers lower cost and simpler layout |
| TPS3808G33DBVR | 3.3V fixed threshold, 20ms timeout, 1.5μA quiescent current, but lacks manual reset (MR) input | Suitable for fixed-rail systems where manual reset is handled externally or not required | Choose TPS3808G33DBVR for ultra-low-power 3.3V-only monitoring; MAX6315US48D2+T remains preferred for 4.63V supervision with MR support |
Compared with MAX6314US46D2+T and TPS3808G33DBVR, the MAX6315US48D2+T uniquely combines 4.63V precision threshold, integrated MR input with internal pullup, and SOT23-4 footprint - making it optimal for cost-sensitive, manually resettable 5V-system designs where pin count and board space are constrained.
Availability
MAX6315US48D2+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 MAX6315US48D2+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 MAX6315 family was designed specifically for robust, low-power microprocessor supervision in harsh environments - delivering precision voltage monitoring, glitch-immune reset timing, and minimal external component count for space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage for MAX6315US48D2+T?
The MAX6315US48D2+T has a factory-trimmed nominal reset threshold of 4.63V, with tolerance of ±3.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during production and documented in the Ordering Information table of the official Analog Devices datasheet Rev 7. The "48" in the part number directly encodes the 4.63V threshold.
Does MAX6315US48D2+T support manual reset functionality?
Yes, the MAX6315US48D2+T includes a dedicated MR (manual reset) input (Pin 3) that asserts RESET when pulled low. It features an internal 63kΩ pullup resistor, so MR can be left floating if unused. A momentary switch from MR to GND provides debounced manual reset without external components - a key feature confirmed in the Pin Description and Applications Information sections.
What is the minimum reset timeout period for MAX6315US48D2+T?
The MAX6315US48D2+T has a minimum reset timeout period (tRP) of 20ms, as indicated by the "D2" suffix in the part number. This is guaranteed over -40°C to +125°C and ensures sufficient hold time for microcontrollers like PIC16F, STM32L0, and MSP430 to complete internal initialization before release.
Can MAX6315US48D2+T's RESET output be pulled up to a voltage higher than VCC?
Yes, the MAX6315US48D2+T features an open-drain RESET output rated for voltages up to +6.0V, allowing it to be pulled up to a higher supply rail (e.g., 5V) while monitoring a lower VCC (e.g., 3.3V). This level-shifting capability is explicitly specified in the Absolute Maximum Ratings and Detailed Description sections of the datasheet.
Is MAX6315US48D2+T qualified for automotive applications?
The MAX6315US48D2+T is specified for -40°C to +125°C operation and meets key automotive stress requirements including immunity to short VCC transients and guaranteed performance over temperature. While not AEC-Q100 certified as a standalone part, its electrical characteristics and thermal rating align with body electronics and infotainment subsystems - confirmed by Analog Devices' published operating temperature range and transient immunity data.
MAX6315US48D2+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:
- 4.8V
- 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
MAX6315US48D2+T FAQ
1.How can I place an order for MAX6315US48D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US48D2+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 MAX6315US48D2+T reliable?
The price and inventory of MAX6315US48D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US48D2+T is usually 5 days.
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Once your MAX6315US48D2+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 MAX6315US48D2+T?
For technical support, including MAX6315US48D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US48D2+T requirements.
6.How does Aetrix verify that MAX6315US48D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US48D2+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 MAX6315US48D2+T meets industry standards.
7.What is the process for return or replacement of MAX6315US48D2+T?
All MAX6315US48D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US48D2+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 MAX6315US48D2+T part is unused and in its original packaging.
Return procedure for MAX6315US48D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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