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Analog Devices Inc./Maxim Integrated MAX6315US46D2-TG01
- Part No.:
- MAX6315US46D2-TG01
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US46D2-TG01.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,250
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Product details
Overview
MAX6315US46D2-TG01 from Maxim Integrated is a precision open-drain microprocessor reset supervisor IC designed to monitor VCC supply voltage and assert a reliable active-low reset signal during power-up, brownout, or manual reset events. It features a factory-trimmed 4.63V reset threshold, 20ms minimum reset timeout period, 5µA supply current, -40°C to +125°C operating temperature range, and SOT143-4 package - used in industrial controllers and battery-powered instrumentation for deterministic system initialization.
For engineers reviewing the MAX6315US46D2-TG01 datasheet, MAX6315US46D2-TG01 pinout, MAX6315US46D2-TG01 application, or MAX6315US46D2-TG01 equivalent, key selection criteria include reset threshold accuracy (±1.8% over temperature), immunity to sub-1µs VCC transients, open-drain output capable of level-shifting above VCC (up to +6V), guaranteed operation down to VCC = 1.0V, and compatibility with µP bidirectional reset pins via external pullup design.
Technical Context
The MAX6315US46D2-TG01 implements a precision bandgap-based voltage comparator with laser-trimmed resistive divider to set its 4.63V nominal reset threshold, with ±1.8% tolerance over -40°C to +125°C and 60ppm/°C tempco. Its internal monostable timer generates a fixed 20ms (min) reset pulse after VCC rises above threshold or MR deasserts.
Reset assertion is triggered by either VCC falling below 4.63V or logic-low on MR pin; RESET remains low for the full timeout even if VCC recovers mid-brownout. The open-drain n-channel MOSFET output supports pullup to any voltage ≤+6V, enabling level-shifted reset signaling across mixed-supply systems without additional logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±1.8% (factory-laser-trimmed; ensures accurate brownout detection at 5V-system rails) |
| Reset Timeout Period | 20ms minimum (guaranteed minimum pulse width prevents premature µP release during slow-rising VCC) |
| Supply Current | 5µA typical at +25°C (enables multi-year battery life in portable monitoring devices) |
| Operating Temperature | -40°C to +125°C (supports under-hood automotive and industrial control environments) |
| RESET Output Type | Open-drain n-MOSFET (allows pullup to 3.3V/5V/other rail; enables level shifting and wired-OR reset buses) |
| VCC Operating Range | 1.0V to 5.5V (ensures valid reset assertion even during deep brownout or partial power loss) |
| MR Input Pullup | 63kΩ internal (eliminates external resistor; enables direct switch-to-GND manual reset with no debounce circuit) |
Pinout & Package
SOT143-4 surface-mount package (4-pin, 1.3mm × 2.1mm footprint, 1.0mm height), RoHS-compliant, tape-and-reel delivery only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal circuitry and RESET sink current; must connect to system ground plane |
| 2 (RESET) | Active-low open-drain output | Sinks current when asserted; requires external pullup (e.g., 10kΩ) to target reset rail (≤+6V) |
| 3 (MR) | Manual reset input | Logic-low asserts reset; internally pulled up to VCC (63kΩ); floats high if unused |
| 4 (VCC) | Supply and monitored voltage input | Powers IC and feeds internal voltage divider; monitors own supply for brownout detection |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±1.8% tolerance over full temperature range - eliminates calibration and improves system-level voltage margin predictability |
| Four standard timeout options | 20ms minimum (this variant) - matches typical µP reset recovery timing requirements without overdesigning delay |
| Immunity to short VCC transients | Rejects <1µs glitches below threshold - prevents spurious resets in electrically noisy industrial environments |
| Open-drain output exceeding VCC | RESET can be pulled up to +6V while VCC = +3.3V - enables direct interfacing with higher-voltage reset domains |
| Guaranteed operation down to 1.0V VCC | Asserts valid RESET even as supply collapses - ensures fail-safe behavior during catastrophic power failure |
Applications
| Industrial PLC Controllers | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Programmable logic controller operating in factory-floor environments with fluctuating 24VDC supplies converted to 5V/3.3V rails. IC Role / Device Role / Timing Role: Monitors 5V VCC rail and asserts RESET until stable; provides 20ms hold time to ensure FPGA and MCU complete internal initialization. Use Value: Prevents corrupted firmware execution during line sags or switching noise; 4.63V threshold avoids nuisance resets near nominal 5V. |
Use Scenario: Remote environmental sensor node powered by Li-SOCl₂ battery with gradual voltage decay over years. IC Role / Device Role / Timing Role: Detects end-of-life battery drop below 4.63V and triggers controlled shutdown/reset before data corruption. Use Value: 5µA quiescent current extends operational lifetime; guaranteed reset assertion down to 1.0V VCC captures final valid state. |
| Automotive Body Control Modules | Medical Infusion Pumps |
|
Use Scenario: Under-hood BCM subjected to load-dump transients and cold-crank brownouts (-40°C to +125°C). IC Role / Device Role / Timing Role: Supervises 5V microcontroller supply; rejects sub-µs transients while asserting reset during sustained <4.63V conditions. Use Value: 125°C rating and ±1.8% threshold stability ensure reliability where thermal cycling degrades alternatives. |
Use Scenario: Safety-critical infusion pump requiring deterministic reset on power restoration after battery swap or AC outage. IC Role / Device Role / Timing Role: Generates precise 20ms reset pulse synchronized to VCC recovery, ensuring motor driver and ADC re-initialize safely. Use Value: Factory-trimmed timeout eliminates external RC component drift; open-drain output interfaces cleanly with isolated reset logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US46D1-T | Same 4.63V threshold and SOT143 package, but 1ms reset timeout (vs. 20ms) | Used where faster µP release is required (e.g., high-speed boot sequences) | Select when system timing budget demands shorter reset hold time; verify µP tRST requirement |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, push-pull output, 1.4µA ICC, SOT-23-5 | Designed for lower-voltage systems (3.3V/2.5V rails); lacks VCC > RESET level-shifting capability | Choose for ultra-low-power 3.3V applications where open-drain flexibility is unnecessary |
Compared with MAX6315US46D1-T, the MAX6315US46D2-TG01 provides longer reset hold time for robust initialization; compared with TPS3808G33DBVR, it offers higher-voltage threshold and level-shifting output critical for 5V legacy systems, at the cost of higher quiescent current.
Availability
MAX6315US46D2-TG01 is available at Aetrix Electronics and suitable for industrial controllers, battery-powered instrumentation, automotive body electronics, and medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6315US46D2-TG01 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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for industrial, automotive, communications, and computing applications, with emphasis on high-reliability, low-power, and thermally robust solutions.
The MAX6315 family delivers highly accurate, low-quiescent-current reset supervision for microprocessor-based systems - engineered specifically for deterministic power-on reset, brownout protection, and manual reset integration in space-constrained, wide-temperature deployments.
FAQ
What is the exact reset threshold voltage of the MAX6315US46D2-TG01?
The MAX6315US46D2-TG01 has a factory-laser-trimmed nominal reset threshold of 4.63V, with guaranteed tolerance of ±1.8% over the full -40°C to +125°C operating temperature range. This value is confirmed in the Ordering Information table and Electrical Characteristics section of the official datasheet, and applies specifically to this D2 variant with 20ms timeout.
Does the MAX6315US46D2-TG01 support level-shifting reset signaling?
Yes, the MAX6315US46D2-TG01 features an open-drain RESET output that can be pulled up to any voltage between 0V and +6.0V - including voltages higher than its own VCC supply. This allows the MAX6315US46D2-TG01 to drive reset lines in systems with multiple supply domains, such as interfacing a 3.3V-monitoring IC to a 5V µP reset input.
What is the minimum reset timeout period for the MAX6315US46D2-TG01?
The MAX6315US46D2-TG01 provides a guaranteed minimum reset timeout period of 20ms after VCC rises above the 4.63V threshold or after the MR pin is deasserted. This value is specified in the Ordering Information table and Electrical Characteristics section, and is distinct from the 1ms, 140ms, and 1120ms options offered in other MAX6315 variants.
Can the MAX6315US46D2-TG01 operate reliably at low VCC levels?
Yes, the MAX6315US46D2-TG01 guarantees valid RESET assertion down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures fail-safe behavior during deep brownout or power-fail conditions, allowing the host µP to execute last-chance data save routines before complete supply collapse.
Is the MR pin of the MAX6315US46D2-TG01 internally pulled up?
Yes, the MR pin of the MAX6315US46D2-TG01 includes an internal 63kΩ pullup resistor to VCC, as documented in the Pin Description and Electrical Characteristics sections. This eliminates the need for an external pullup resistor; the pin may be left floating if manual reset is not used, or connected directly to a momentary switch to ground for operator-initiated reset.
MAX6315US46D2-TG01 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-4
MAX6315US46D2-TG01 FAQ
1.How can I place an order for MAX6315US46D2-TG01 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US46D2-TG01 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 MAX6315US46D2-TG01 reliable?
The price and inventory of MAX6315US46D2-TG01 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US46D2-TG01 is usually 5 days.
3.What payment methods are accepted for MAX6315US46D2-TG01?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US46D2-TG01 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US46D2-TG01?
MAX6315US46D2-TG01 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US46D2-TG01 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 MAX6315US46D2-TG01?
For technical support, including MAX6315US46D2-TG01 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US46D2-TG01 requirements.
6.How does Aetrix verify that MAX6315US46D2-TG01 is sourced from the original manufacturer or authorized distributors?
All MAX6315US46D2-TG01 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 MAX6315US46D2-TG01 meets industry standards.
7.What is the process for return or replacement of MAX6315US46D2-TG01?
All MAX6315US46D2-TG01 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US46D2-TG01, 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 MAX6315US46D2-TG01 part is unused and in its original packaging.
Return procedure for MAX6315US46D2-TG01:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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