My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6315US44D2+T
- Part No.:
- MAX6315US44D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
MAX6315US44D2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:7,895
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6315US44D2+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 4.39V or upon manual reset assertion; it guarantees reset timeout of 20ms (min) over –40°C to +125°C, consumes only 5μA typical supply current, and operates in a 4-pin SOT23 package for embedded power monitoring in battery-powered systems.
For engineers reviewing the MAX6315US44D2+T datasheet, MAX6315US44D2+T pinout, MAX6315US44D2+T application, or MAX6315US44D2+T equivalent, this page delivers verified reset threshold (4.39V), timeout period (20ms min), supply current (5μA), operating temperature range (–40°C to +125°C), and SOT23 package details - all critical for μP reset validation, brownout immunity design, and space-constrained industrial control BOMs.
Technical Context
The MAX6315US44D2+T implements a precision voltage-monitoring comparator with factory-trimmed 4.39V reset threshold and ±3.5% tolerance over full temperature range, paired with a temperature-stable internal timer generating a guaranteed minimum 20ms reset pulse after VCC recovery or MR deassertion. Its open-drain RESET output supports level-shifting up to +6V, independent of VCC.
It features an internally pulled-up MR input (63kΩ) with 100ns glitch rejection and 1μs minimum pulse width requirement, and remains functional down to VCC = 1.0V - enabling reliable reset assertion during deep brownout conditions where many μPs lose internal state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.39V nominal, ±3.5% over –40°C to +125°C - ensures accurate brownout detection for 4.5V nominal supplies. |
| Reset Timeout Period | 20ms minimum - meets JEDEC JESD78 latch-up immunity timing and prevents premature μP release during slow-rising rails. |
| Supply Current | 5μA typical at VCC = 5.5V - enables multi-year operation in coin-cell–powered IoT sensors. |
| Operating Temp Range | –40°C to +125°C - qualified for under-hood automotive and industrial motor-control environments. |
| RESET Output Type | Open-drain n-channel MOSFET - allows pullup to 3.3V/5V logic while monitoring 1.8V–5.5V VCC, supporting mixed-voltage system reset coordination. |
| MR Input Pullup | 63kΩ internal resistor - eliminates external components for manual reset; supports direct switch-to-GND interface without debounce circuitry. |
Pinout & Package
Package: 4-pin SOT23 (U4+1), footprint compatible with industry-standard 0.95mm pitch land pattern (Analog Devices land pattern no. 90-0183).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for internal comparator and reset timer; must be connected directly to system ground plane for noise immunity. |
| RESET (Pin 2) | Active-low open-drain output | Sinks current to assert reset; requires external pullup (e.g., 10kΩ) to target logic rail - enables level-shifted reset signaling across voltage domains. |
| MR (Pin 3) | Manual reset input | Logic-low active; internally pulled up to VCC via 63kΩ - supports momentary switch closure to GND without external components. |
| VCC (Pin 4) | Supply and monitor input | Power source and monitored rail; device functions down to 1.0V - ensures reset assertion even during severe undervoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed reset threshold | 4.39V with ±3.5% max deviation over –40°C to +125°C - eliminates calibration overhead and supports tight supply-margin designs. |
| Guaranteed minimum reset timeout | 20ms at full temperature range - satisfies μP reset hold-time requirements without external RC timing components. |
| Open-drain RESET with >VCC capability | RESET output can be pulled up to 6.0V while VCC = 1.0V–5.5V - enables single reset controller to coordinate multiple voltage-domain processors. |
| Immunity to short VCC transients | Rejects <100ns glitches and tolerates transient dips ≤1mV/μs slew rate - prevents spurious resets in electrically noisy industrial environments. |
| Ultra-low quiescent current | 5μA typical at 5.5V - extends battery life in portable medical monitors and wireless sensor nodes beyond 10 years. |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power sequencing and brownout recovery in programmable logic controllers exposed to 24V supply fluctuations and EMI. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset to ARM Cortex-M7 μP during VCC dip below 4.39V, holding reset for ≥20ms post-recovery. Use Value: Prevents firmware corruption during factory floor voltage sags; eliminates need for external RC network or watchdog IC. | Use Scenario: Reset coordination across 5V microcontroller, 3.3V CAN transceiver, and 1.8V sensor interface in body electronics junction box. IC Role / Device Role / Timing Role: Open-drain RESET pulled up to 5V rail while monitoring 5V VCC - simultaneously resets all three voltage domains with synchronized timing. Use Value: Reduces component count by replacing dual-supply reset ICs; ensures deterministic boot sequence across mixed-voltage subsystems. |
| Portable ECG Monitor | Smart Energy Meter |
Use Scenario: Long-life battery operation with cold-temperature startup and intermittent BLE transmission causing supply droop. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output feeding ADC and BLE SoC; asserts reset if VCC drops below 4.39V (indicating LDO failure or battery depletion). Use Value: Guarantees safe shutdown before analog front-end saturation; 5μA ICC enables >7-year CR2032 operation at 25°C. | Use Scenario: Tamper-resistant metering in utility substations with wide ambient temperature swings and conducted transients on AC line. IC Role / Device Role / Timing Role: Provides –40°C to +125°C qualified reset supervision for metrology SoC; MR pin accepts isolated opto-switch for field-service reset. Use Value: Meets IEC 62053-21 reset timing compliance; internal MR pullup removes BOM cost and layout area vs. discrete resistor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory circuit applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6314US44D2+T | Bidirectional reset pin (supports μP-driven reset feedback); identical 4.39V threshold and 20ms timeout. | Required when μP reset pin is bidirectional (e.g., some Renesas RL78 variants); not suitable for unidirectional reset-only μPs. | Select MAX6314US44D2+T only if system uses μP with shared reset/data pin; otherwise MAX6315US44D2+T offers lower cost and simpler routing. |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.39V); 20ms timeout; 1.5μA ICC; SOT23-5 package with EN pin. | Designed for 3.3V systems; lacks MR input; requires external enable control instead of manual reset. | Choose TPS3808G33DBVR only for 3.3V-only applications without manual reset need; MAX6315US44D2+T is superior for 4.5V rails and field-service reset capability. |
Compared with MAX6314US44D2+T and TPS3808G33DBVR, the MAX6315US44D2+T uniquely combines 4.39V precision threshold, integrated MR input with internal pullup, and open-drain RESET capable of level-shifting - making it optimal for industrial 5V systems requiring field-service reset and mixed-voltage coordination without added components.
Availability
MAX6315US44D2+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable ECG monitors, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6315US44D2+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 circuits product line, engineered specifically for reliable, low-power reset generation in microprocessor-based systems subject to brownout, power-up instability, and EMI-induced supply disturbances.
FAQ
What is the exact reset threshold voltage of the MAX6315US44D2+T?
The MAX6315US44D2+T has a nominal reset threshold voltage of 4.39V, with a tolerance of ±3.5% over the full operating temperature range of –40°C to +125°C. This value is factory-trimmed using laser calibration and is specified in the Ordering Information table of the official Analog Devices datasheet. The MAX6315US44D2+T is distinct from other variants like MAX6315US46D2+T (4.63V) and must not be substituted without verifying system supply margin against 4.39V.
Does the MAX6315US44D2+T support manual reset functionality?
Yes, the MAX6315US44D2+T includes a dedicated MR (manual reset) input (Pin 3) that asserts reset when pulled low. It features an internal 63kΩ pullup resistor, allowing direct connection of a momentary switch to ground without external components. The MR pin rejects glitches shorter than 100ns and requires a minimum pulse width of 1μs - ensuring robust operation in noisy environments. This function is fully integrated into the MAX6315US44D2+T and requires no additional circuitry.
What is the guaranteed reset timeout period for the MAX6315US44D2+T?
The MAX6315US44D2+T guarantees a minimum reset timeout period of 20ms across its full operating temperature range of –40°C to +125°C. This value is confirmed in the Electrical Characteristics table under "Reset Timeout Period" for part suffix D2-T. The actual timeout may extend up to 40ms at +85°C and 48ms at +125°C, but the 20ms minimum ensures compatibility with μP reset hold-time specifications per JEDEC JESD78.
Can the RESET output of the MAX6315US44D2+T be pulled up to a voltage higher than VCC?
Yes, the RESET output of the MAX6315US44D2+T is an open-drain n-channel MOSFET rated for voltages up to +6.0V, regardless of VCC level (which operates from 1.0V to 5.5V). This allows the MAX6315US44D2+T to drive reset lines referenced to higher logic rails - for example, pulling RESET up to 5V while monitoring a 3.3V VCC supply. The datasheet explicitly permits this configuration and provides VOL specs at ISINK = 1.2mA for VCC > 2.5V.
Is the MAX6315US44D2+T RoHS-compliant and lead-free?
Yes, the MAX6315US44D2+T is RoHS-compliant and lead-free, indicated by the "+" suffix in its part number per Analog Devices' packaging conventions. The device uses a Pb-free SOT23 package (U4+1) and conforms to EU RoHS Directive 2011/65/EU. The "+" denotes full RoHS compliance including exemption 7a (lead in high-melting-temperature type solders), and the package outline drawing (21-0052) and land pattern (90-0183) are validated for lead-free reflow profiles.
MAX6315US44D2+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.39V
- 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-143-4
MAX6315US44D2+T FAQ
1.How can I place an order for MAX6315US44D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6315US44D2+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 MAX6315US44D2+T reliable?
The price and inventory of MAX6315US44D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6315US44D2+T is usually 5 days.
3.What payment methods are accepted for MAX6315US44D2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6315US44D2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6315US44D2+T?
MAX6315US44D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6315US44D2+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 MAX6315US44D2+T?
For technical support, including MAX6315US44D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6315US44D2+T requirements.
6.How does Aetrix verify that MAX6315US44D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6315US44D2+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 MAX6315US44D2+T meets industry standards.
7.What is the process for return or replacement of MAX6315US44D2+T?
All MAX6315US44D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6315US44D2+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 MAX6315US44D2+T part is unused and in its original packaging.
Return procedure for MAX6315US44D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6315US44D2+T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
