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Analog Devices Inc./Maxim Integrated MAX6315US46D4+T
- Part No.:
- MAX6315US46D4+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US46D4+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,576
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Product details
Overview
MAX6315US46D4+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 4.63V or upon manual reset assertion. It features a factory-trimmed 4.63V reset threshold, 1120ms minimum reset timeout period, 5μA supply current at +25°C, and operates across –40°C to +125°C for use in battery-powered industrial controllers.
For engineers reviewing the MAX6315US46D4+T datasheet, MAX6315US46D4+T pinout, MAX6315US46D4+T application, or MAX6315US46D4+T equivalent, this page delivers verified electrical parameters, SOT23 package mapping, reset timing behavior under temperature variation, MR input logic thresholds, and design-critical open-drain RESET output voltage limits up to +6V.
Technical Context
The MAX6315US46D4+T implements a precision voltage-monitoring comparator with laser-trimmed internal resistive divider to set its 4.63V nominal reset threshold, with ±3.5% tolerance over –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 1120ms reset pulse after VCC recovery or MR deassertion.
It uses an open-drain n-channel MOSFET for RESET output, enabling level-shifting: RESET can be pulled up to any voltage between 0V and +6V, independent of VCC, while sinking ≥1.2mA at VCC > 2.5V with VOL ≤ 0.3V. MR includes a 63kΩ internal pullup and rejects <100ns glitches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal, ±3.5% over –40°C to +125°C - ensures reliable brownout detection for 5V systems with margin |
| Reset Timeout Period | 1120ms minimum (–40°C to +125°C) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 15μA max at VCC = 5.5V, –40°C to +125°C - enables multi-year operation in coin-cell–powered devices |
| RESET Output Type | Open-drain, supports pullup to up to +6V - allows reset signaling across mixed-voltage domains (e.g., 3.3V μP reset by 5V rail) |
| MR Input Threshold | VIL = 0.8V (VTH > 4.0V), VIH = 2.4V - compatible with standard TTL/CMOS logic without external level shifting |
| Operating Temp Range | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and high-reliability embedded applications |
Pinout & Package
MAX6315US46D4+T is housed in a RoHS-compliant 4-pin SOT23 package (package code U4+1), with 1.3mm × 0.8mm footprint and 0.95mm height - optimized for space-constrained PCB layouts in portable instrumentation and sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and reset timer; must be connected directly to system ground plane |
| 2 (RESET) | Active-low open-drain output | Sinks current when asserted; requires external pullup (e.g., 10kΩ) to defined logic-high voltage (≤ +6V) |
| 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 monitored rail; device functions down to VCC = 1.0V, with RESET guaranteed low until VCC > 1V |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 4.63V with ±3.5% tolerance over full temperature range - eliminates calibration and external resistor networks |
| Four selectable timeout periods | 1120ms minimum ensures compatibility with slow-start DC-DC converters and complex boot sequences |
| Immunity to short VCC transients | Rejects <100ns glitches and tolerates up to 100V/μs dV/dt - prevents spurious resets during switching noise events |
| Open-drain RESET with extended voltage range | Supports pullup to +6V while VCC ≥ 1.0V - enables reset coordination across 1.8V, 3.3V, and 5V subsystems |
| Guaranteed operation over temperature | Specified from –40°C to +125°C with tested performance on all key parameters - suitable for unheated outdoor enclosures |
Applications
| Industrial PLC Controller | Battery-Powered Data Logger |
|---|---|
Use Scenario: Programmable logic controller operating in factory environments with fluctuating 24VDC supplies converted to 5V rails. IC Role / Device Role / Timing Role: Monitors 5V logic rail and asserts reset if voltage sags below 4.63V during motor startup surges or EMI events. Use Value: Prevents firmware corruption during brownouts; 1120ms timeout accommodates slow-regulator recovery and ensures deterministic boot. |
Use Scenario: Remote environmental sensor node powered by CR2032 coin cell, sampling every 10 minutes. IC Role / Device Role / Timing Role: Supervises 3.3V LDO output and triggers full system reset on battery depletion or cold-temperature voltage droop. Use Value: 5μA quiescent current extends battery life beyond 5 years; open-drain RESET allows direct interface to ultra-low-power MCU reset pin. |
| Automotive Body Control Module | Medical Infusion Pump Controller |
Use Scenario: Under-dash electronic control unit exposed to –40°C winter starts and +105°C engine-bay ambient. IC Role / Device Role / Timing Role: Resets microcontroller when ignition-derived 5V supply dips during cranking or alternator load dump. Use Value: –40°C to +125°C qualification and ±3.5% threshold stability ensure reliable operation without derating or thermal compensation. |
Use Scenario: Safety-critical infusion pump with dual-redundant MCUs requiring synchronized, glitch-immune reset initiation. IC Role / Device Role / Timing Role: Provides primary reset supervision with manual override via nurse-initiated MR button press. Use Value: MR's 100ns glitch rejection and internal 63kΩ pullup eliminate external debounce components, reducing BOM count and failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US46D3+T | Same 4.63V threshold but 140ms min timeout (vs. 1120ms) | Suitable for faster-boot MCUs where long reset hold is unnecessary | Select when system boot completes in <200ms and shorter reset duration reduces power-on latency |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, push-pull RESET, 1.5μA ICC | Lacks manual reset input and open-drain flexibility; lower supply current | Prefer for cost-sensitive 3.3V-only systems where level-shifting reset is not required |
Compared with MAX6315US46D3+T and TPS3808G33DBVR, the MAX6315US46D4+T uniquely combines 4.63V precision monitoring, 1120ms robust timeout, manual reset capability, and open-drain level-shifting - making it optimal for legacy 5V industrial systems requiring extended reset assertion and field-serviceable reset initiation.
Availability
MAX6315US46D4+T is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered data loggers, automotive body control modules, and medical infusion pump controllers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6315US46D4+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 is part of Analog Devices' precision power-supervision portfolio, engineered specifically for reliable microprocessor reset generation in harsh environments with minimal external components.
FAQ
What is the exact reset threshold voltage of the MAX6315US46D4+T?
The MAX6315US46D4+T has a factory-trimmed nominal reset threshold 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 documented in the Electrical Characteristics table under "Reset Threshold (VTH)" with specified min/max bounds at each temperature grade.
Does the MAX6315US46D4+T support manual reset functionality, and how is it implemented?
Yes, the MAX6315US46D4+T supports manual reset via its MR pin (Pin 3), which is logic-low active. It includes a 63kΩ internal pullup resistor, so the pin may be left floating if unused. A momentary switch from MR to GND provides field-reset capability, and the device inherently rejects glitches shorter than 100ns - eliminating need for external debounce circuitry.
Can the RESET output of the MAX6315US46D4+T be pulled up to a voltage higher than VCC?
Yes, the MAX6315US46D4+T features an open-drain RESET output (Pin 2) rated for voltages up to +6.0V, regardless of VCC level. This allows level-shifting - for example, using a 5V pullup while monitoring a 3.3V VCC rail - provided the pullup voltage stays within absolute maximum ratings and sink current remains within spec (e.g., ≤1.2mA for VOL ≤ 0.3V).
What is the minimum reset timeout period for the MAX6315US46D4+T, and how does it vary with temperature?
The MAX6315US46D4+T guarantees a minimum reset timeout period of 1120ms over –40°C to +85°C, and 896ms over –40°C to +125°C. The normalized timeout remains within ±3% of nominal across temperature, as confirmed in the Typical Operating Characteristics plot "Normalized Reset Timeout Period vs. Temperature" in the datasheet.
Is the MAX6315US46D4+T RoHS-compliant and what package does it use?
Yes, the MAX6315US46D4+T is RoHS-compliant and supplied in a lead(Pb)-free 4-pin SOT23 package (outline 21-0052, land pattern 90-0183). The "+T" suffix denotes tape-and-reel packaging, and the top mark "HBAA" identifies this specific variant per the Ordering Information table.
MAX6315US46D4+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:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
MAX6315US46D4+T FAQ
1.How can I place an order for MAX6315US46D4+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US46D4+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 MAX6315US46D4+T reliable?
The price and inventory of MAX6315US46D4+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US46D4+T is usually 5 days.
3.What payment methods are accepted for MAX6315US46D4+T?
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4.How is shipping managed for MAX6315US46D4+T?
MAX6315US46D4+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US46D4+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 MAX6315US46D4+T?
For technical support, including MAX6315US46D4+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US46D4+T requirements.
6.How does Aetrix verify that MAX6315US46D4+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US46D4+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 MAX6315US46D4+T meets industry standards.
7.What is the process for return or replacement of MAX6315US46D4+T?
All MAX6315US46D4+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US46D4+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 MAX6315US46D4+T part is unused and in its original packaging.
Return procedure for MAX6315US46D4+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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