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Analog Devices Inc./Maxim Integrated MAX6315US30D4-T
- Part No.:
- MAX6315US30D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US30D4-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,224
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Product details
Overview
The MAX6315US30D4-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 3.00V or upon manual reset assertion. It provides a factory-trimmed 1120ms (min) reset timeout period, operates from -40°C to +125°C, draws only 5μA typical supply current at 5.5V, and uses a 4-pin SOT23 package for space-constrained embedded power monitoring.
For engineers reviewing the MAX6315US30D4-T datasheet, MAX6315US30D4-T pinout, MAX6315US30D4-T application, or MAX6315US30D4-T equivalent, this device serves as a precision voltage-monitoring reset supervisor with temperature-stable threshold (±3.5% over -40°C to +125°C), glitch-immune manual reset input, and level-shifting open-drain RESET output compatible with supplies up to +6V.
Technical Context
The MAX6315US30D4-T implements a precision bandgap-based voltage comparator with factory-laser-trimmed resistive divider to set its 3.00V nominal reset threshold, achieving ±3.5% accuracy over full temperature range and 60ppm/°C tempco. Its internal monostable timer generates a guaranteed minimum 1120ms reset pulse after VCC recovery or MR deassertion.
It features an integrated 63kΩ MR pullup resistor, 100ns MR glitch rejection, and an open-drain n-channel MOSFET RESET output capable of sinking 3.2mA while operating with VCC as low as 1.0V - enabling reliable reset assertion during brownout and controlled power-down sequences in mixed-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 3.00V nominal, ±3.5% over -40°C to +125°C - ensures consistent brownout detection across industrial temperature range |
| Reset Timeout Period | 1120ms minimum (at -40°C to +125°C) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 5μA typical at VCC = 5.5V, -40°C to +85°C - enables ultra-low-power operation in battery-backed systems |
| Operating Voltage Range | 1.0V to 5.5V - supports supervision of low-voltage microcontrollers and legacy 5V logic |
| MR Input Threshold | VIL = 0.3 × VCC, VIH = 0.7 × VCC (for VTH < 4.0V) - ensures robust TTL/CMOS-compatible manual reset triggering |
| RESET Output Drive | Sinks 3.2mA at VCC > 4.25V with VOL ≤ 0.4V - allows direct interface to standard logic inputs without external buffer |
| Package | 4-pin SOT23 (U4+1) - surface-mount footprint compatible with automated assembly and high-density PCB layouts |
Pinout & Package
MAX6315US30D4-T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052, land pattern 90-0183), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for compact portable and industrial control designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | System ground return path for internal comparator and timer; must be connected directly to low-impedance ground plane |
| 2 (RESET) | Active-low open-drain output | Drives low during reset; requires external pullup (e.g., 10kΩ) to any supply ≤ +6V - enables level shifting between monitored and host logic domains |
| 3 (MR) | Manual reset input | Logic-low assertion triggers reset; features internal 63kΩ pullup - eliminates need for external resistor when unused |
| 4 (VCC) | Supply voltage and threshold monitor | Power input and sensing node; internally divided to compare against 3.00V reference - monitors same rail powering downstream μP |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.00V reset threshold | Eliminates external resistor network and calibration, reducing BOM count and board area while maintaining ±3.5% accuracy over full temperature range |
| 1120ms minimum reset timeout | Ensures μP completes power-up sequence and internal clock stabilization before release - prevents premature code execution |
| Open-drain RESET output with 6V tolerance | Permits reset signaling to logic powered by higher rails (e.g., 5V reset line controlling 3.3V μP), simplifying multi-rail system design |
| 5μA typical supply current | Extends battery life in portable instrumentation and remote sensors where continuous supervision is required between wake cycles |
| 100ns MR glitch rejection | Rejects EMI-induced noise on manual reset lines without external RC filtering - reduces component count and layout sensitivity |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Power supply fluctuates during field deployment due to variable load and ambient temperature shifts. IC Role / Device Role / Timing Role: Supervises 3.3V VCC rail and asserts reset if voltage sags below 3.00V during brownout events. Use Value: Prevents corrupted firmware execution and memory writes by holding μP in reset until stable 3.3V is restored for ≥1120ms. |
Use Scenario: Sensor node operates on coin-cell battery with gradual voltage decay over months of operation. IC Role / Device Role / Timing Role: Monitors declining VCC and initiates controlled shutdown/reset before undervoltage lockout causes data loss. Use Value: Enables graceful state save and wake-from-reset recovery using ultra-low 5μA quiescent current during sleep mode. |
| Medical Infusion Pump | Automotive Body Control Module |
Use Scenario: Critical safety system requires deterministic reset behavior during power interruption or ESD event. IC Role / Device Role / Timing Role: Provides debounced manual reset via front-panel button and immune-to-glitch power monitoring. Use Value: Guarantees ≥1120ms reset pulse even after sub-100ns MR transients, meeting IEC 60601-1 reliability requirements. |
Use Scenario: 12V automotive supply experiences load-dump and cold-crank transients affecting 5V domain regulators. IC Role / Device Role / Timing Role: Supervises post-regulator 5V rail and asserts reset during dips below 3.00V caused by regulator instability. Use Value: Maintains ±3.5% threshold accuracy from -40°C to +125°C, ensuring consistent behavior across engine bay thermal extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US30D4-T | Bidirectional reset pin support; identical 3.00V threshold and 1120ms timeout; same SOT23 package | Required for μCs with shared reset/input pins needing bidirectional communication | Select MAX6314US30D4-T only when interfacing with bidirectional reset-capable microcontrollers |
| TPS3808G30DBVR | 3.0V threshold, 1200ms min timeout, 2.5μA ICC, but push-pull RESET output (not open-drain) | Lacks level-shifting capability; incompatible with multi-supply reset architectures requiring voltage translation | Choose TPS3808G30DBVR only when push-pull drive and lower quiescent current outweigh need for open-drain flexibility |
Compared with MAX6314US30D4-T, the MAX6315US30D4-T offers simpler unidirectional reset control and lower cost; versus TPS3808G30DBVR, it trades 2.5μA quiescent current for essential open-drain level-shifting - critical in heterogeneous supply systems.
Availability
MAX6315US30D4-T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, medical infusion pumps, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US30D4-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 MAX6315US30D4-T belongs to Analog Devices' precision supervisory IC product line, engineered specifically for reliable, low-power reset generation in harsh-temperature embedded systems with strict voltage-margin requirements.
FAQ
What is the exact reset threshold voltage of the MAX6315US30D4-T?
The MAX6315US30D4-T has a factory-trimmed nominal reset threshold voltage of 3.00V, with tolerance of ±3.5% over the full operating temperature range (-40°C to +125°C). This value is laser-trimmed during manufacturing and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" - confirming precise brownout detection for 3.3V systems.
Does the MAX6315US30D4-T support operation below 1.8V?
Yes, the MAX6315US30D4-T operates down to 1.0V VCC, as confirmed in the Electrical Characteristics table under "Operating Voltage Range". At VCC ≥ 1.0V, the RESET output remains functional and guaranteed to assert low - enabling supervision of ultra-low-voltage microcontrollers and energy-harvesting subsystems.
Can the RESET output of the MAX6315US30D4-T be pulled up to 5V while VCC is at 3.3V?
Yes, the MAX6315US30D4-T's open-drain RESET output is rated for voltages up to +6.0V, explicitly allowing pullup to 5V (or any voltage ≤6V) independent of VCC. This level-shifting capability is documented in the Absolute Maximum Ratings and Pin Description sections - making the MAX6315US30D4-T ideal for interfacing between disparate supply domains.
What is the minimum reset timeout period for the MAX6315US30D4-T over temperature?
The MAX6315US30D4-T guarantees a minimum reset timeout period of 1120ms across its full operating temperature range (-40°C to +125°C), as specified in the Ordering Information and Electrical Characteristics tables under "Reset Timeout Period (tRP)". This ensures consistent μP initialization timing regardless of thermal environment.
Is external debounce required for the manual reset input on the MAX6315US30D4-T?
No, external debounce is not required for the MR input of the MAX6315US30D4-T. The device integrates 100ns glitch rejection and an internal 63kΩ pullup resistor, as stated in the Electrical Characteristics and Detailed Description sections - enabling direct connection of a momentary switch from MR to GND without additional components.
MAX6315US30D4-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:
- 3V
- 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
MAX6315US30D4-T FAQ
1.How can I place an order for MAX6315US30D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US30D4-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 MAX6315US30D4-T reliable?
The price and inventory of MAX6315US30D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US30D4-T is usually 5 days.
3.What payment methods are accepted for MAX6315US30D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US30D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US30D4-T?
MAX6315US30D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US30D4-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 MAX6315US30D4-T?
For technical support, including MAX6315US30D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US30D4-T requirements.
6.How does Aetrix verify that MAX6315US30D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US30D4-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 MAX6315US30D4-T meets industry standards.
7.What is the process for return or replacement of MAX6315US30D4-T?
All MAX6315US30D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US30D4-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 MAX6315US30D4-T part is unused and in its original packaging.
Return procedure for MAX6315US30D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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