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Analog Devices Inc./Maxim Integrated MAX6315US46D3-T
- Part No.:
- MAX6315US46D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US46D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,825
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Product details
Overview
The MAX6315US46D3-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 ≥140ms after recovery, draws only 5μA at 5.5V, and operates across -40°C to +125°C in portable and industrial μP systems.
For engineers reviewing the MAX6315US46D3-T datasheet, MAX6315US46D3-T pinout, MAX6315US46D3-T application, or MAX6315US46D3-T equivalent, key selection criteria include factory-trimmed 4.63V threshold, 140ms min timeout, SOT23-4 package compatibility, open-drain level-shifting capability up to 6V, and guaranteed operation over extended temperature.
Technical Context
The MAX6315US46D3-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. Its internal timer initiates on VCC rise above VTH or MR deassertion and holds RESET low for a fixed 140ms minimum timeout period.
It features an open-drain n-channel MOSFET RESET output capable of sinking 3.2mA at VCC > 4.25V with VOL ≤ 0.4V, and includes a 63kΩ internal MR pullup resistor with 100ns glitch rejection. Immunity to short VCC transients is ensured via comparator overdrive response curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.63V - Factory-trimmed threshold ensures accurate brownout detection for 5V systems. |
| tRP Min | 140ms - Guarantees sufficient reset hold time for full μP initialization after power recovery. |
| ICC Max | 15μA at +125°C - Enables ultra-low-power operation in battery-backed or energy-constrained designs. |
| VOL @ ISINK | 0.4V at 3.2mA - Ensures reliable logic-low assertion even under heavy RESET line loading. |
| Operating Temp | -40°C to +125°C - Supports deployment in automotive under-hood, industrial control, and harsh-environment applications. |
| Package | SOT23-4 - Compact 1.3mm × 2.9mm footprint saves PCB area in space-constrained embedded systems. |
| RESET Type | Active-low open-drain - Allows level-shifting to higher-voltage rails (up to 6V) and wired-OR reset bus configurations. |
Pinout & Package
Package: SOT23-4, surface-mount, 1.3mm × 2.9mm body, 0.95mm height, lead(Pb)-free/RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry; must be connected to system ground plane for stable threshold accuracy. |
| 2 (RESET) | Open-drain reset output | Asserts active-low signal; requires external pullup (e.g., 10kΩ) to any rail ≤6V for level-shifted reset signaling. |
| 3 (MR) | Manual reset input | Logic-low assertion triggers immediate reset; internal 63kΩ pullup allows NC connection if unused. |
| 4 (VCC) | Supply & monitor input | Powers device and provides monitored voltage source; valid from 1.0V to 5.5V; resets when falling below 4.63V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V threshold | Factory-laser-trimmed to ±3.5% over full temperature range, eliminating external resistor networks and calibration. |
| 140ms reset timeout | Internally programmed minimum delay ensures μP completes power-up sequencing before release. |
| Open-drain RESET with 6V tolerance | Enables reset signaling across mixed-supply domains (e.g., 3.3V supervisor controlling 5V μP reset line). |
| 5μA supply current | Reduces quiescent power draw in always-on monitoring circuits, extending battery life in portable equipment. |
| MR glitch immunity | 100ns rejection window prevents spurious resets from EMI or switch bounce without external RC filtering. |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Power monitoring during mains failure and backup battery switchover in programmable logic controllers. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during brownout to prevent corrupted ladder logic execution. Use Value: 4.63V threshold aligns with 5V system rail collapse point; 140ms timeout exceeds typical PLC boot sequence duration. | Use Scenario: Long-term environmental sensor node operating on coin-cell battery with periodic wake-up cycles. IC Role / Device Role / Timing Role: Low-current VCC monitor ensuring clean restart after voltage sag during RF transmission bursts. Use Value: 5μA ICC enables multi-year battery life; open-drain RESET supports direct interface to 3.0V μC reset pin. |
| Automotive Body Control Module | Medical Point-of-Care Device |
Use Scenario: Monitoring 5V supply derived from vehicle battery in BCM units exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Reset generator immune to <100ns transients, preventing false resets during ignition switching noise. Use Value: Guaranteed -40°C to +125°C operation meets AEC-Q100 ambient requirements; 100ns MR glitch rejection suppresses EMI-induced faults. | Use Scenario: Ensuring deterministic startup of ARM-based diagnostic instrument after AC/DC adapter reconnection or battery insertion. IC Role / Device Role / Timing Role: Single-chip reset supervisor replacing discrete RC+transistor solution in safety-critical power sequencing. Use Value: Factory-trimmed 4.63V threshold eliminates field calibration; SOT23-4 footprint fits tight layout constraints near μP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US46D3-T | Bidirectional reset pin compatible with μCs requiring reset pin reuse as general-purpose I/O; otherwise identical VTH and tRP. | Required where μC reset pin must serve dual function (reset input + GPIO) during normal operation. | Select MAX6314US46D3-T only if bidirectional reset functionality is explicitly needed; MAX6315US46D3-T is simpler and lower-cost for standard unidirectional reset. |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.63V); adjustable timeout via external capacitor; 2.5μA typical ICC; SOT23-5 package. | Suitable for 3.3V systems but requires external timing component and different PCB footprint. | Choose TPS3808G33DBVR only for 3.3V rail monitoring with flexible timeout tuning; not drop-in for 5V/4.63V applications. |
Compared with MAX6314US46D3-T, the MAX6315US46D3-T offers simplified unidirectional reset control and lower BOM count; versus TPS3808G33DBVR, it delivers precise 4.63V detection and fixed 140ms timeout without external components-critical for compact, high-reliability 5V embedded systems.
Availability
MAX6315US46D3-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 devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US46D3-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 was designed as a cost-effective, space-saving supervisory solution for microprocessor-based systems requiring precise, low-power reset generation with minimal external components.
FAQ
What is the exact reset threshold voltage of the MAX6315US46D3-T?
The MAX6315US46D3-T has a factory-trimmed nominal reset threshold voltage 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 manufacturing and does not require external calibration or adjustment. The MAX6315US46D3-T is specifically selected for 5V system monitoring where precise brownout detection at 4.63V is required.
How long is the reset timeout period for the MAX6315US46D3-T?
The MAX6315US46D3-T provides a minimum reset timeout period of 140ms after VCC rises above the 4.63V threshold or after manual reset (MR) is deasserted. This fixed internal timeout ensures sufficient hold time for microprocessor initialization and is guaranteed across -40°C to +125°C. The MAX6315US46D3-T does not support adjustable timeout-it is factory-set and requires no external components.
Can the MAX6315US46D3-T's RESET output be pulled up to a voltage higher than its VCC supply?
Yes, the MAX6315US46D3-T features an open-drain RESET output rated for voltages up to +6.0V, allowing it to be pulled up to a rail higher than its own VCC (e.g., 5V supervisor driving a 3.3V μP reset line). This level-shifting capability is intrinsic to the MAX6315US46D3-T's internal n-channel MOSFET structure and eliminates need for external level translators in mixed-supply systems.
Does the MAX6315US46D3-T include internal protection against short VCC transients?
Yes, the MAX6315US46D3-T is designed to be immune to short-duration negative-going VCC transients, with documented 100ns glitch rejection on the MR input and transient immunity characterized in the "Maximum Transient Duration vs. Reset Comparator Overdrive" graph. The MAX6315US46D3-T's comparator architecture prevents false resets from noise spikes ≤100ns, making it suitable for electrically noisy environments like automotive or industrial settings.
What is the supply current consumption of the MAX6315US46D3-T over temperature?
The MAX6315US46D3-T draws a maximum supply current of 15μA at +125°C and 5.5V VCC, with typical consumption of 5μA at +25°C. This ultra-low ICC enables use in always-on monitoring applications such as battery-backed real-time clocks or wake-up supervisors. The MAX6315US46D3-T maintains this performance across its full -40°C to +125°C operating range without external biasing or compensation.
MAX6315US46D3-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:
- 4.63V
- 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
MAX6315US46D3-T FAQ
1.How can I place an order for MAX6315US46D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US46D3-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 MAX6315US46D3-T reliable?
The price and inventory of MAX6315US46D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US46D3-T is usually 5 days.
3.What payment methods are accepted for MAX6315US46D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US46D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US46D3-T?
MAX6315US46D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US46D3-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 MAX6315US46D3-T?
For technical support, including MAX6315US46D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US46D3-T requirements.
6.How does Aetrix verify that MAX6315US46D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6315US46D3-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 MAX6315US46D3-T meets industry standards.
7.What is the process for return or replacement of MAX6315US46D3-T?
All MAX6315US46D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US46D3-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 MAX6315US46D3-T part is unused and in its original packaging.
Return procedure for MAX6315US46D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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