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Analog Devices Inc./Maxim Integrated MAX6315US47D4+T
- Part No.:
- MAX6315US47D4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US47D4+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,148
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Product details
Overview
MAX6315US47D4+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 ≥1120ms 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 protection.
For engineers reviewing the MAX6315US47D4+T datasheet, MAX6315US47D4+T pinout, MAX6315US47D4+T application, or MAX6315US47D4+T equivalent, key selection criteria include factory-trimmed 4.63V reset threshold, 1120ms minimum timeout, open-drain output capable of level-shifting above VCC, guaranteed operation over temperature, and SOT23-4 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6315US47D4+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider setting nominal VTH = 4.63V ±3.5% over -40°C to +125°C, and integrates a monostable timer that enforces ≥1120ms reset timeout after VCC recovery or MR release. Its open-drain RESET output uses an n-channel MOSFET switch rated for sink currents up to 3.2mA at VCC > 4.25V.
MR input includes a 63kΩ internal pullup resistor and rejects transients <100ns; it triggers reset within 500ns and accepts logic-low pulses as short as 1μs. The device is immune to VCC glitches down to 100μs duration when overdrive exceeds 20mV, per its normalized transient rejection curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VTH Nominal | 4.63V - factory-laser-trimmed threshold ensures accurate brownout detection for 5V-system monitoring |
| tRP Min | 1120ms - guarantees sufficient reset hold time for full μP initialization in power-up sequencing |
| ICC | 5μA at VCC = 5.5V - enables multi-year battery life in portable equipment |
| Operating Temp | -40°C to +125°C - supports under-hood automotive and industrial control environments |
| RESET Output | Open-drain, 0.4V max VOL at 3.2mA - allows level-shifted reset signaling to supplies up to +6V |
| MR Input | Internal 63kΩ pullup - eliminates external components for manual reset implementation |
| VCC Range | 1.0V to 5.5V - ensures valid reset assertion even during deep brownout conditions |
Pinout & Package
MAX6315US47D4+T is housed in a RoHS-compliant 4-pin SOT23 package (outline 21-0052), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for high-density PCB layouts in portable and industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and timer; must be low-impedance to ensure noise immunity |
| 2 (RESET) | Active-low open-drain output | Sinks current to assert reset; requires external pullup to system supply (0–6V); enables level shifting |
| 3 (MR) | Manual reset input | Logic-low active; internally pulled up to VCC via 63kΩ; debounced by design; no external RC needed |
| 4 (VCC) | Supply and monitor input | Powers IC and provides input to precision voltage-divider network; monitored for reset threshold violation |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed VTH | 4.63V ±3.5% over full temperature range eliminates calibration and improves system reliability |
| 1120ms minimum reset timeout | Ensures complete μP reset sequence execution before release, preventing premature code execution |
| Open-drain RESET with 6V tolerance | Permits reset signaling across mixed-voltage domains (e.g., 3.3V supervisor controlling 5V μP reset line) |
| 5μA supply current at 5.5V | Reduces quiescent power in always-on monitoring circuits, critical for battery longevity |
| MR glitch rejection & internal pullup | 100ns noise immunity and 63kΩ pullup eliminate external components and simplify board layout |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous operation in factory-floor automation where voltage sags occur due to motor switching or shared power rails. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET during brownout events and holding reset ≥1120ms to guarantee clean μP restart. Use Value: Prevents corrupted firmware execution and communication lockups caused by incomplete reset sequencing. | Use Scenario: Long-term environmental monitoring using coin-cell or Li-SOCl₂ batteries with infrequent wake-ups. IC Role / Device Role / Timing Role: Ultra-low-power VCC monitor enabling reliable wake-from-deep-sleep with deterministic reset timing. Use Value: Extends operational lifetime beyond 10 years by drawing only 5μA while maintaining robust brownout response. |
| Automotive Body Control Modules | Medical Point-of-Care Devices |
Use Scenario: Under-hood electronics exposed to wide temperature swings (-40°C to +125°C) and load-dump transients. IC Role / Device Role / Timing Role: High-temp-stable reset supervisor with 4.63V threshold matching 5V rail requirements in BCM power domains. Use Value: Ensures fail-safe behavior during cold-cranking and thermal cycling without recalibration or drift compensation. | Use Scenario: Portable diagnostic instruments requiring FDA-grade reliability and immunity to ESD-induced resets. IC Role / Device Role / Timing Role: Immune-to-glitch reset generator with 100ns MR rejection and open-drain isolation between analog and digital subsystems. Use Value: Eliminates false resets during probe insertion or ESD events, preserving clinical data integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US46D4+T | Same 4.63V threshold and 1120ms timeout, but features bidirectional reset pin for μCs requiring reset acknowledgment | Required where host μC uses reset pin for both input and status feedback (e.g., some ARM Cortex-M boot sequences) | Select MAX6314US46D4+T only if bidirectional reset capability is explicitly required; otherwise MAX6315US47D4+T offers lower cost and simpler interface |
| TPS3808G33DBVR | 3.3V fixed threshold, 1200ms timeout, 2.5μA ICC, same SOT23-4 package but different pinout (RESET on pin 1, GND on pin 2) | Suitable for 3.3V systems only; not drop-in compatible due to pinout mismatch and different VTH | Choose TPS3808G33DBVR for ultra-low-power 3.3V applications where 3.3V threshold is acceptable; MAX6315US47D4+T remains optimal for 5V-rail supervision |
Compared with MAX6314US46D4+T and TPS3808G33DBVR, the MAX6315US47D4+T delivers precise 4.63V monitoring with guaranteed 1120ms hold time in a pinout-optimized SOT23-4 package - making it the most direct fit for legacy 5V μP reset architectures requiring minimal BOM changes and proven thermal stability.
Availability
MAX6315US47D4+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US47D4+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 series belongs to Analog Devices' precision supervisory IC product line, designed specifically for reliable, low-power reset generation in microprocessor-based systems operating under harsh voltage and thermal conditions.
FAQ
What is the exact reset threshold voltage of the MAX6315US47D4+T?
The MAX6315US47D4+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 specified in the Electrical Characteristics table under "Reset Threshold (VTH)" with test conditions confirming accuracy across temperature and voltage conditions.
Does the MAX6315US47D4+T support operation at VCC below 2.5V?
Yes, the MAX6315US47D4+T operates with VCC as low as 1.0V, and its RESET output is guaranteed to remain asserted (logic-low) down to VCC = 1.0V. This ensures reliable reset assertion during deep brownout conditions, though sink capability degrades below 1.2V per the VOL specification.
Can the RESET output of the MAX6315US47D4+T be pulled up to a voltage higher than VCC?
Yes, the MAX6315US47D4+T features an open-drain RESET output rated for voltages up to +6.0V, allowing it to be pulled up to a supply rail higher than VCC - for example, using a 5V pullup while monitoring a 3.3V VCC rail. This enables level-shifting functionality without additional components.
What is the minimum pulse width the MR input accepts on the MAX6315US47D4+T?
The MR input of the MAX6315US47D4+T accepts logic-low pulses as short as 1μs, with guaranteed reset assertion. Additionally, it provides 100ns glitch rejection, ensuring immunity to electrical noise on the manual reset line without requiring external filtering components.
Is the MAX6315US47D4+T pin-compatible with the MAX811 series?
Yes, the MAX6315US47D4+T is explicitly stated in its datasheet to be pin-compatible with the MAX811 series. Both devices use identical SOT23-4 pinout (GND, RESET, MR, VCC), enabling direct replacement in existing designs without PCB modification - provided the reset threshold and timeout requirements align.
MAX6315US47D4+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:
- 4.7V
- 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
MAX6315US47D4+T FAQ
1.How can I place an order for MAX6315US47D4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US47D4+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 MAX6315US47D4+T reliable?
The price and inventory of MAX6315US47D4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US47D4+T is usually 5 days.
3.What payment methods are accepted for MAX6315US47D4+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US47D4+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US47D4+T?
MAX6315US47D4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US47D4+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 MAX6315US47D4+T?
For technical support, including MAX6315US47D4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US47D4+T requirements.
6.How does Aetrix verify that MAX6315US47D4+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US47D4+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 MAX6315US47D4+T meets industry standards.
7.What is the process for return or replacement of MAX6315US47D4+T?
All MAX6315US47D4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US47D4+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 MAX6315US47D4+T part is unused and in its original packaging.
Return procedure for MAX6315US47D4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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