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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:4,528
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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 upon manual reset assertion. It provides a factory-trimmed 1120ms (min) reset timeout period, 5μA supply current at +25°C, and operates across -40°C to +125°C. Used in battery-powered controllers and critical μP power monitoring.
For engineers reviewing the MAX6315US47D4-T datasheet, MAX6315US47D4-T pinout, MAX6315US47D4-T application, or MAX6315US47D4-T equivalent, this page delivers verified electrical parameters, SOT23 package mapping, reset threshold accuracy (±3.5% over full temperature range), MR input logic thresholds, and open-drain RESET output behavior with VCC-independent pullup capability up to +6V.
Technical Context
The MAX6315US47D4-T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider setting a nominal 4.63V reset threshold, coupled to a temperature-compensated monostable timer generating ≥1120ms reset pulse width after VCC recovery or MR release. Its MR input includes a 63kΩ internal pullup and 100ns glitch rejection.
RESET output uses an open-drain n-channel MOSFET capable of sinking 3.2mA at VCC > 4.25V while maintaining VOL ≤ 0.4V; it supports level-shifting by allowing external pullup to voltages up to +6V - independent of VCC - enabling interface with higher-voltage reset domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Nominal Reset Threshold | 4.63V ±3.5% over -40°C to +125°C - ensures reliable brownout detection for 5V systems with margin against ripple and drift |
| Reset Timeout Period (min) | 1120ms at -40°C to +125°C - guarantees sufficient processor initialization time after power recovery |
| Supply Current (ICC) | 15μA max at +125°C, VCC = 5.5V - enables multi-year operation in coin-cell–powered instrumentation |
| MR Input Threshold (VIH/VIL) | VIL ≤ 0.8V (VTH > 4.0V), VIH ≥ 2.4V - compatible with standard 3.3V/5V logic without level shifters |
| RESET Output Voltage (VOL) | ≤0.4V at ISINK = 3.2mA, VCC > 4.25V - ensures solid logic-low drive into typical μP reset inputs |
| Operating Temperature Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Package | 4-pin SOT23 - footprint-compatible with space-constrained portable and embedded PCB layouts |
Pinout & Package
MAX6315US47D4-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, with gull-wing leads and 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and timer; must be connected directly to system ground plane for noise immunity |
| 2 (RESET) | Active-low open-drain output | Sinks current only when asserted; requires external pullup (e.g., 10kΩ) to 0–6V supply - enables level-shifted reset signaling |
| 3 (MR) | Manual reset input | Logic-low active; internally pulled up to VCC via 63kΩ resistor; debounced by design - no external RC needed |
| 4 (VCC) | Supply and monitor input | Power source and voltage-sense node; monitors itself - supports 1.0V to 5.5V operation with reset assertion guaranteed down to VCC = 1V |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 4.63V with ±3.5% tolerance over full temperature range - eliminates calibration components and improves system yield |
| Four selectable timeout periods | 1120ms minimum timeout ensures compatibility with slow-starting μPs and FPGA configuration sequences |
| Open-drain RESET output with VCC-independent pullup | Supports pullup to +6V regardless of VCC - allows reset domain bridging between 3.3V logic and 5V peripherals |
| Immunity to short VCC transients | Rejects glitches <100ns wide and tolerates up to 100mV overdrive without false reset - reduces need for additional filtering |
| Low quiescent current | 5μA typical at +25°C - extends battery life in portable medical and sensor nodes beyond 10 years |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Power cycling during field maintenance or brownout events in remote sensor networks. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset until stable 5V rail is restored and held for ≥1120ms. Use Value: Prevents corrupted firmware execution during unstable power-up; 4.63V threshold aligns with 5V system undervoltage guardband. |
Use Scenario: Intermittent solar charging causing VCC droop below 4.63V during night cycles. IC Role / Device Role / Timing Role: Monitors VCC and holds μC in reset until battery recovers to safe operating voltage and remains stable for 1120ms. Use Value: Eliminates spurious wakeups and flash write corruption; 5μA ICC preserves charge in Li-SOCl₂ cells. |
| Automotive Body Control Module | Medical Point-of-Care Monitor |
Use Scenario: Load-dump or cold-crank transients causing VCC dip below specification in 12V-derived 5V rails. IC Role / Device Role / Timing Role: Detects sub-4.63V condition and asserts RESET to halt MCU operation until rail stabilizes and timeout expires. Use Value: Meets AEC-Q100 Grade 1 (-40°C to +125°C) requirements; 100ns MR glitch rejection suppresses EMI-induced resets. |
Use Scenario: Critical diagnostic device requiring deterministic boot sequence after AC power interruption or battery swap. IC Role / Device Role / Timing Role: Provides fail-safe reset hold-off for ≥1120ms to ensure ADC reference settling and EEPROM integrity checks complete. Use Value: Supports IEC 60601-1 compliance via guaranteed reset assertion during brownout; open-drain output interfaces cleanly with isolated reset domains. |
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 active-high or active-low flexibility | Required where host microcontroller uses shared reset pin for both power-on and watchdog functions | Select MAX6314US46D4-T only if bidirectional reset capability is explicitly needed; otherwise MAX6315US47D4-T offers lower cost and identical core supervision |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout (adjustable via capacitor), 1.5μA ICC - lower current but incompatible threshold and timeout profile | Suitable for 3.3V-only systems with tight power budgets but not drop-in for 5V brownout protection | Choose TPS3808G33DBVR only for new 3.3V designs prioritizing ultra-low ICC; MAX6315US47D4-T remains optimal for 5V legacy compatibility and deterministic 1120ms timing |
Compared with MAX6314US46D4-T, MAX6315US47D4-T simplifies design by removing bidirectional complexity while retaining identical voltage and timing specs; versus TPS3808G33DBVR, it delivers higher reset threshold accuracy and longer, factory-fixed timeout - critical for safety-critical 5V applications where timing predictability outweighs minimal current savings.
Availability
MAX6315US47D4-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 monitors 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 with precision, reliability, and longevity.
The MAX6315 series belongs to Analog Devices' supervisory IC product line, engineered specifically for deterministic power-on reset, brownout protection, and manual reset integration in resource-constrained embedded systems - emphasizing low ICC, wide temperature operation, and factory-trimmed accuracy.
FAQ
What is the exact reset threshold voltage of the MAX6315US47D4-T?
The MAX6315US47D4-T has a nominal reset threshold voltage of 4.63V, with tolerance of ±3.5% over the full operating temperature range of -40°C to +125°C. This value is factory-laser-trimmed and specified in the Electrical Characteristics table under "Reset Threshold (VTH)" with test conditions confirming stability across voltage and temperature extremes.
Does the MAX6315US47D4-T support operation 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 = 1V. However, its reset function - detecting VCC falling below 4.63V - only activates when VCC exceeds that threshold during power-up; below 4.63V, the device remains in reset state.
Can the RESET output of the MAX6315US47D4-T be pulled up to 5.5V while VCC is at 3.3V?
Yes, the MAX6315US47D4-T's open-drain RESET output supports pullup voltages up to +6.0V regardless of VCC level. When VCC = 3.3V, the RESET pin can still be pulled up to 5.5V, enabling level-shifting for interfacing with higher-voltage microcontrollers or FPGAs - a key feature confirmed in the Absolute Maximum Ratings and Detailed Description sections.
What is the minimum reset timeout period for the MAX6315US47D4-T across temperature?
The MAX6315US47D4-T guarantees a minimum reset timeout period of 1120ms over the full -40°C to +125°C temperature range. At +25°C, the typical timeout is 1570ms, and the maximum is 2240ms - all values documented in the Electrical Characteristics table under "Reset Timeout Period (tRP)" for the D4-T variant.
Is the MR input of the MAX6315US47D4-T internally pulled up, and what is its resistance?
Yes, the MR input of the MAX6315US47D4-T includes an internal pullup resistor with a nominal value of 63kΩ (range 32kΩ to 100kΩ), eliminating the need for external components. This allows MR to be left unconnected if unused, or driven low via a momentary switch to GND - fully detailed in the Electrical Characteristics table under "MR Pullup Resistance".
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.
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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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