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Analog Devices Inc./Maxim Integrated MAX6315US48D3-T
- Part No.:
- MAX6315US48D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US48D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6315US48D3-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 140ms minimum reset timeout period, 5μA supply current at +25°C, and operates across -40°C to +125°C for reliable power-on/power-down sequencing in embedded μP systems.
For engineers reviewing the MAX6315US48D3-T datasheet, MAX6315US48D3-T pinout, MAX6315US48D3-T application, or MAX6315US48D3-T equivalent, this page delivers verified electrical parameters, SOT23 package layout, reset threshold accuracy (±3.5% over full temperature range), MR input logic thresholds, and design-critical timing behavior under brownout and transient conditions.
Technical Context
The MAX6315US48D3-T implements a precision voltage-monitoring comparator with laser-trimmed internal 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 initiates a fixed 140ms (min) reset timeout after VCC rises above threshold or MR deasserts.
It features an open-drain RESET output capable of sinking 3.2mA while pulled up to voltages up to +6.0V - independent of VCC - enabling level-shifted reset signaling. The MR input includes a 63kΩ internal pullup and rejects glitches <100ns, supporting direct switch-to-ground connection without external debounce.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Reset Threshold | 4.63V ±3.5% over -40°C to +125°C - ensures deterministic brownout detection for 5V-systems with margin against ripple and drift |
| Reset Timeout Period (min) | 140ms - guarantees sufficient hold time for μP initialization before release, even under worst-case temperature and voltage conditions |
| VCC Supply Current | 5μA typical at +25°C, ≤15μA max at +125°C - enables use in battery-powered equipment with multi-year shelf life |
| RESET Output Type | Open-drain n-channel MOSFET - allows pullup to any supply ≤6.0V, enabling reset assertion across mixed-voltage domains |
| MR Input Threshold | VIL = 0.8V (VTH > 4.0V), VIH = 2.4V - compatible with standard 3.3V/5V logic families and supports direct switch interface |
| Operating Temperature Range | -40°C to +125°C - qualified for automotive under-hood, industrial control, and extended-temperature embedded applications |
Pinout & Package
MAX6315US48D3-T is housed in a 4-pin SOT23 package (package code U4+1), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for space-constrained PCB layouts in portable and high-density systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry and RESET sink current; must be connected to system ground plane for stable threshold reference |
| 2 (RESET) | Active-low open-drain output | Asserts logic-low during reset; requires external pullup (e.g., 10kΩ) to target supply (≤6.0V); sinks ≥3.2mA at VCC > 4.25V |
| 3 (MR) | Manual reset input | Logic-low assertion forces immediate reset; internally pulled up to VCC via 63kΩ resistor; accepts 1μs minimum pulse width |
| 4 (VCC) | Supply voltage and monitor input | Power source and monitored rail; device functions down to 1.0V, but reset assertion guaranteed only above 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V reset threshold | Eliminates external resistor network and calibration, reducing BOM count and board area while ensuring ±3.5% accuracy over full temperature range |
| 140ms minimum reset timeout | Guarantees μP core and peripheral initialization completes before release, preventing race conditions in complex boot sequences |
| Open-drain RESET with 6.0V absolute max rating | Enables level-shifting from monitored 5V rail to 3.3V or 2.5V reset domain without additional level translators or voltage dividers |
| 5μA supply current at +25°C | Supports ultra-low-power operation in always-on monitoring circuits, extending battery life in portable instrumentation and IoT edge nodes |
| MR glitch rejection & internal 63kΩ pullup | Removes need for external RC debounce or pullup resistors - simplifies manual reset implementation using only a momentary switch to GND |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
|
Use Scenario: Power sequencing during cold-cranking or load-dump events where VCC dips below nominal 5V. IC Role / Device Role / Timing Role: Voltage supervisor asserting RESET until VCC stabilizes above 4.63V and holds for ≥140ms. Use Value: Prevents erratic μP execution during unstable battery transients, eliminating firmware lockups and communication faults. |
Use Scenario: Monitoring 5V supply powering CAN transceivers and sensor interfaces in under-hood ECUs. IC Role / Device Role / Timing Role: Brownout detector with 140ms timeout ensuring safe reset before CAN controller reinitialization. Use Value: Maintains bus integrity by synchronizing reset release with power rail recovery, avoiding partial CAN node resets. |
| Portable Medical Monitor | Smart Energy Meter |
|
Use Scenario: Battery-powered ECG front-end with sleep/wake cycles requiring deterministic wake-up reset timing. IC Role / Device Role / Timing Role: Low-current (5μA) supervisor providing 140ms reset hold to stabilize ADC reference and analog front-end post-wake. Use Value: Enables sub-10μA system standby current while guaranteeing clean μP restart without external timing components. |
Use Scenario: Dual-supply meter with 5V MCU domain and isolated 3.3V metrology ASIC, requiring cross-rail reset coordination. IC Role / Device Role / Timing Role: Open-drain RESET pulled to 3.3V rail, asserting reset to both domains simultaneously during 5V brownout. Use Value: Eliminates need for dual-reset ICs or discrete level shifters, reducing component count and improving timing correlation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US48D3-T | Same 4.63V threshold and 140ms timeout, but features push-pull RESET output instead of open-drain | Requires same VCC for RESET pullup; unsuitable for level-shifting or mixed-voltage reset domains | Select when driving single-rail μP with no level-shift requirement and higher noise immunity is needed |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, 1.4μA quiescent current, SOT23-6 package | Not pin-compatible; lacks manual reset input; optimized for ultra-low-power 3.3V systems only | Choose for battery-sensitive 3.3V-only designs where MR functionality is unnecessary and lower ICC is critical |
Compared with MAX6314US48D3-T and TPS3808G33DBVR, the MAX6315US48D3-T uniquely combines 4.63V precision threshold, 140ms timeout, open-drain flexibility, and integrated MR - making it the only option supporting level-shifted reset in 5V industrial and automotive systems with manual intervention capability.
Availability
MAX6315US48D3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical monitors, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US48D3-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 MAX6315US48D3-T belongs to the MAX63xx family of precision μP supervisors - designed specifically for robust, low-power, single-supply voltage monitoring in harsh environments with minimal external components.
FAQ
What is the exact reset threshold voltage of the MAX6315US48D3-T?
The MAX6315US48D3-T has a 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 factory-laser-trimmed and specified in the Ordering Information table of the official datasheet. The MAX6315US48D3-T does not support user-adjustable thresholds - all variants are pre-configured at manufacture.
Does the MAX6315US48D3-T require external components to function?
No, the MAX6315US48D3-T operates autonomously with only a single external pullup resistor on the RESET pin (e.g., 10kΩ to 3.3V or 5V). It integrates a 63kΩ internal pullup on MR, eliminating need for external biasing. No capacitors, resistors, or trimming networks are required - the MAX6315US48D3-T achieves full supervision functionality in a 4-pin SOT23 footprint.
Can the RESET output of the MAX6315US48D3-T be pulled up to a voltage higher than VCC?
Yes - the MAX6315US48D3-T's RESET pin is an open-drain output rated for up to +6.0V absolute maximum, regardless of VCC level. This allows pulling RESET to a separate 3.3V or 2.5V rail while monitoring a 5V VCC, enabling level-shifted reset signaling. The MAX6315US48D3-T maintains full specification compliance when used in such cross-rail configurations.
What is the minimum pulse width accepted on the MR input of the MAX6315US48D3-T?
The MAX6315US48D3-T accepts a minimum 1μs logic-low pulse on the MR pin to initiate reset. Its internal circuitry also rejects glitches shorter than 100ns, ensuring noise immunity in electrically noisy environments. When MR is held low, RESET remains asserted continuously; upon MR release, the 140ms timeout begins - a behavior confirmed in the Electrical Characteristics table for the MAX6315US48D3-T.
Is the MAX6315US48D3-T suitable for automotive applications?
Yes - the MAX6315US48D3-T is qualified for operation from -40°C to +125°C and specified with guaranteed performance across that range, including reset threshold stability (±3.5%) and timeout accuracy. Its SOT23 package meets automotive board-level reliability requirements, and the MAX6315US48D3-T is widely deployed in body control modules, infotainment power supervisors, and ADAS subsystems requiring robust brownout protection.
MAX6315US48D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- 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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US48D3-T FAQ
1.How can I place an order for MAX6315US48D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US48D3-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 MAX6315US48D3-T reliable?
The price and inventory of MAX6315US48D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US48D3-T is usually 5 days.
3.What payment methods are accepted for MAX6315US48D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US48D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US48D3-T?
MAX6315US48D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US48D3-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 MAX6315US48D3-T?
For technical support, including MAX6315US48D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US48D3-T requirements.
6.How does Aetrix verify that MAX6315US48D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US48D3-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 MAX6315US48D3-T meets industry standards.
7.What is the process for return or replacement of MAX6315US48D3-T?
All MAX6315US48D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US48D3-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 MAX6315US48D3-T part is unused and in its original packaging.
Return procedure for MAX6315US48D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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