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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:2,811
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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 provides a factory-trimmed 20ms minimum reset timeout period, 5μA supply current at +25°C, and operates across -40°C to +125°C. It is used in battery-powered controllers and embedded systems requiring reliable power-on reset and brownout protection.
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 details, reset threshold accuracy (±3.5% over full temperature range), MR input logic thresholds, and design-meaningful timeout behavior for system-level reliability validation.
Technical Context
The MAX6315US48D2-T implements a precision voltage-monitoring comparator with factory-laser-trimmed resistive divider to set its 4.63V nominal reset threshold, with ±3.5% tolerance over -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed minimum 20ms reset timeout after VCC recovery or MR deassertion.
It features an open-drain RESET output capable of sinking 3.2mA at VCC > 4.25V while tolerating pullup voltages up to +6.0V - enabling level-shifting across supply domains. The MR input includes a 63kΩ internal pullup and rejects <100ns glitches, eliminating need for external debounce components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal, ±3.5% over -40°C to +125°C - ensures deterministic brownout detection across industrial temperature range |
| Reset Timeout Period | 20ms minimum (D2 variant) - 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 systems |
| RESET Output Type | Open-drain n-channel MOSFET - supports level-shifted reset assertion to higher-voltage logic domains (up to +6V) |
| MR Input Logic Threshold | VIL = 0.8V, VIH = 2.4V (for VTH > 4.0V) - compatible with standard 3.3V/5V digital control signals |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| VCC Range | 1.0V to 5.5V - supports monitoring of core supplies down to 1.2V logic rails with margin |
Pinout & Package
MAX6315US48D2-T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052, land pattern 90-0183), measuring 2.9mm × 1.6mm × 1.1mm, suitable for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and reset timer; must be connected directly to system ground plane |
| 2 (RESET) | Active-low open-drain output | Sinks current when asserted; requires external pullup (e.g., 10kΩ) to defined logic-high voltage (≤6V) |
| 3 (MR) | Manual reset input | Logic-low assertion forces RESET active; internally pulled up to VCC (63kΩ); accepts 1μs minimum pulse width |
| 4 (VCC) | Supply and monitor input | Power source and monitored rail; internal voltage divider samples this node to detect undervoltage conditions |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 4.63V with ±3.5% tolerance over full temperature range - eliminates calibration overhead and external resistor networks |
| Guaranteed 20ms reset timeout | Minimum duration ensures μP reset line remains asserted long enough for oscillator stabilization and register initialization |
| Open-drain RESET with 6V tolerance | Enables reset signaling across mixed-supply systems (e.g., 3.3V supervisor controlling 5V μP reset input) |
| MR input with internal 63kΩ pullup | Reduces BOM count by eliminating external pullup; supports direct switch-to-ground connection without additional components |
| Immunity to short VCC transients | Rejects <100ns noise spikes and suppresses false resets during switching regulator ripple or ESD events |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Power-up sequencing and brownout recovery in programmable logic controllers operating in factory-floor environments with fluctuating 24VDC supplies stepped down to 5V/3.3V rails. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to ARM Cortex-M7 microcontroller until monitored 3.3V rail stabilizes above 4.63V threshold. Use Value: Prevents firmware execution errors during unstable power conditions; 20ms timeout aligns with typical MCU clock startup latency. |
Use Scenario: Reset management for infotainment head units exposed to load-dump and cold-crank transients in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Monitors post-regulator 5V domain and asserts RESET during voltage sags below 4.63V; MR pin enables service-mode forced reset via diagnostic tool. Use Value: Ensures deterministic boot state after battery reconnection; open-drain output interfaces safely with 5V-tolerant MCU reset pins. |
| Portable Medical Sensors | Smart Energy Meters |
Use Scenario: Battery-powered glucose monitors using coin-cell sources where supply voltage decays gradually from 3.0V to 2.0V during end-of-life. IC Role / Device Role / Timing Role: Detects crossing below 4.63V threshold on regulated 3.3V rail and holds RESET active until shutdown sequence completes. Use Value: 5μA quiescent current extends usable battery life; precise threshold prevents premature shutdown during transient dips. |
Use Scenario: Revenue-grade electricity meters deployed in outdoor enclosures experiencing wide ambient temperature swings (-40°C to +85°C). IC Role / Device Role / Timing Role: Supervises isolated 3.3V microcontroller supply derived from flyback converter; maintains RESET during AC line interruptions. Use Value: ±3.5% threshold accuracy over temperature avoids false resets in hot summer conditions; 125°C rating supports transformer proximity mounting. |
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 push-pull (not open-drain) RESET output | Requires same VCC for pullup; cannot level-shift to higher-voltage domains | Select when system uses single-supply reset architecture and no cross-rail signaling is needed |
| TPS3808G33DBVR | 3.3V fixed threshold, 20ms timeout, 1.5μA typical ICC, push-pull RESET | Lacks MR input; no manual reset capability | Choose for ultra-low-power applications where manual reset is unnecessary and 3.3V threshold suffices |
Compared with MAX6314US46D2-T and TPS3808G33DBVR, the MAX6315US48D2-T uniquely combines 4.63V precision threshold, 20ms timeout, manual reset input, and open-drain output - making it the only option supporting level-shifted reset assertion and field-serviceable reset initiation in multi-rail industrial systems.
Availability
MAX6315US48D2-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensors, and smart energy meters 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 MAX6315US48D2-T belongs to the MAX63xx family of precision voltage supervisors, designed specifically for reliable power-monitoring in space-constrained, low-power, and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6315US48D2-T?
The MAX6315US48D2-T has a nominal reset threshold of 4.63V, factory-trimmed with ±3.5% tolerance over the full -40°C to +125°C operating temperature range. This value is confirmed in the Ordering Information table and Electrical Characteristics section of the official Analog Devices datasheet, and applies specifically to the "US48" variant designation.
Does the MAX6315US48D2-T support manual reset functionality?
Yes, the MAX6315US48D2-T includes a dedicated MR (manual reset) input on Pin 3. A logic-low pulse ≥1μs on MR forces the RESET output active regardless of VCC level. The device incorporates a 63kΩ internal pullup resistor, allowing MR to be left unconnected if unused - no external components are required for basic manual reset implementation.
What is the guaranteed minimum reset timeout period for the MAX6315US48D2-T?
The MAX6315US48D2-T guarantees a minimum reset timeout period of 20ms (D2 variant) after VCC rises above the 4.63V threshold or after MR is deasserted. This value is specified in the Electrical Characteristics table under "Reset Timeout Period (tRP)" for the "MAX6315US_ _D2-T" part grouping and is valid across -40°C to +125°C.
Can the RESET output of the MAX6315US48D2-T be pulled up to a voltage higher than VCC?
Yes, the RESET output of the MAX6315US48D2-T is an open-drain n-channel MOSFET rated for up to +6.0V on the drain terminal. This allows the output to be pulled up to a higher-voltage rail (e.g., 5V) while monitoring a lower VCC (e.g., 3.3V), enabling safe level-shifted reset signaling between different power domains in mixed-supply systems.
What package type and footprint does the MAX6315US48D2-T use?
The MAX6315US48D2-T uses a 4-pin SOT23 package (package code U4+1/U4-1, outline 21-0052, land pattern 90-0183), measuring 2.9mm × 1.6mm × 1.1mm. It is RoHS-compliant and tape-and-reel packaged (indicated by the "-T" suffix). This compact footprint supports high-density PCB layouts in space-constrained applications like portable instrumentation.
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.
3.What payment methods are accepted for MAX6315US48D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US48D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US48D2-T?
MAX6315US48D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
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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