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Analog Devices Inc./Maxim Integrated MAX6385XS41D3-T
- Part No.:
- MAX6385XS41D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS41D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,103
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Product details
Overview
MAX6385XS41D3-T from Maxim Integrated is a precision active-high push-pull μP supervisory circuit designed for reliable power-on reset and brownout detection in low-voltage embedded systems. It features a factory-set 4.10V reset threshold (±2.5% over −40°C to +125°C), 140ms minimum VCC reset timeout, and consumes only 3μA at 1.8V. It operates across 1.0V–5.5V supply range and guarantees valid reset output down to VCC = 1V - ideal for battery-powered microcontroller applications requiring deterministic startup behavior.
For engineers reviewing the MAX6385XS41D3-T datasheet, MAX6385XS41D3-T pinout, MAX6385XS41D3-T application, or MAX6385XS41D3-T equivalent, key selection criteria include its 4-pin SC70 package, manual reset input with internal pullup, active-high push-pull output logic, and compatibility with dual-voltage monitoring architectures where auxiliary reset inputs are not required.
Technical Context
The MAX6385XS41D3-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over full automotive temperature range (−40°C to +125°C) and 60ppm/°C tempco. Its internal monostable timer ensures a guaranteed minimum 140ms reset assertion after VCC rises above 4.10V, independent of supply ramp rate.
It integrates a debounced manual reset input (MR) with 63kΩ internal pullup resistor, supporting TTL/CMOS-compatible triggering and noise immunity up to 100ns glitches. The active-high push-pull RESET output drives high during fault conditions and guarantees correct logic state down to VCC = 1V, eliminating need for external level-shifting in ultra-low-voltage systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.10V (nominal), ±2.5% over −40°C to +125°C - ensures accurate detection of 4.0V–4.2V supply brownout without false triggers |
| VCC Reset Timeout | 140ms (min) - holds processor in reset long enough for stable clock and memory initialization |
| Supply Current | 3μA at 1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | 1.0V to 5.5V - supports direct interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and reduces BOM count |
| Manual Reset Input | MR with 63kΩ internal pullup - allows momentary switch connection without external components |
| Reset Output Validity | Guaranteed down to VCC = 1V - maintains deterministic reset state during deep brownout recovery |
Pinout & Package
MAX6385XS41D3-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm - optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - powers internal circuitry and serves as reference for reset threshold comparison |
| 2 | RESET | Active-high push-pull output - asserts high during reset condition; sinks/source current per spec without external components |
| 3 | MR | Active-low manual reset input - forces reset when pulled low; internal 63kΩ pullup enables NC or VCC tie-off if unused |
| 4 | GND | Analog/digital ground reference - must be connected to system ground plane for accurate threshold sensing and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.10V with ±2.5% tolerance over full temperature range - eliminates need for external calibration or trimming resistors |
| Low quiescent current | 3μA at 1.8V - extends battery life in always-on edge devices without sacrificing reset reliability |
| Guaranteed reset validity | Operates correctly down to VCC = 1V - ensures safe boot sequence even during severe undervoltage events |
| Integrated MR pullup | 63kΩ internal resistor - enables single-switch manual reset implementation with no external parts |
| Negative-going transient immunity | Rejects VCC glitches <140µs wide at 100mV overdrive - prevents spurious resets in electrically noisy environments |
Applications
| Computers | Controllers |
|---|---|
Use Scenario: Power sequencing in compact industrial PCs with 4.0V core supply rails. IC Role / Device Role / Timing Role: Monitors 4.10V VCC rail and asserts active-high RESET until stable, ensuring CPU boots only after power integrity is confirmed. Use Value: Prevents firmware corruption during cold-start by enforcing 140ms minimum reset hold time post-ramp. | Use Scenario: Reset management in PLC I/O modules powered from regulated 3.3V and 4.1V supplies. IC Role / Device Role / Timing Role: Provides deterministic power-on reset signal to ARM Cortex-M7 controller via active-high push-pull output. Use Value: Eliminates external pullup resistor, reducing component count and PCB area in cost-sensitive automation hardware. |
| Intelligent Instruments | Portable/Battery-Powered Equipment |
Use Scenario: Battery-backed data loggers using Li-ion cells with 4.2V max charge voltage. IC Role / Device Role / Timing Role: Detects end-of-discharge at 4.10V threshold and initiates graceful shutdown via active-high reset to MCU. Use Value: Enables precise low-battery cutoff without software polling, extending usable runtime by avoiding premature shutdown. | Use Scenario: Wearable health monitors operating from single-cell 3.0–4.2V LiPo battery. IC Role / Device Role / Timing Role: Supervises main 3.3V LDO output and provides manual reset via tactile switch on MR pin. Use Value: Internal 63kΩ MR pullup removes need for discrete resistor, saving 0.3mm² board space in ultra-thin form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SXR41D3-T | Same 4.10V threshold and 140ms timeout, but no manual reset input (MR) | Lacks MR functionality - unsuitable where field service or user-initiated reset is required | Select when manual reset is unnecessary and lowest possible BOM cost is critical |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.10V); 200ms timeout; 1.8V–6.0V supply range | Requires external resistor divider for 4.10V detection; higher 12μA typical ICC at 3.6V | Choose only if redesigning threshold network is acceptable and higher supply current is tolerable |
Compared with MAX809SXR41D3-T, MAX6385XS41D3-T adds MR capability without increasing footprint or cost; versus TPS3808G33DBVR, it delivers exact 4.10V detection with lower power and simpler layout - making it optimal for drop-in replacement in existing 4-pin SC70 reset designs requiring manual reset.
Availability
MAX6385XS41D3-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, and intelligent instrumentation requiring stable component supply and AEC-Q100–compatible timing assurance.
Supply support for MAX6385XS41D3-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
Maxim Integrated (now part of Analog Devices) designs precision analog and mixed-signal ICs for demanding industrial, automotive, and computing applications - emphasizing low power, high accuracy, and robust operation.
MAX6385XS41D3-T belongs to the MAX6381–MAX6390 family of low-power μP supervisory circuits, engineered specifically for reliable reset generation in space- and energy-constrained embedded systems with tight voltage margins.
FAQ
What is the exact reset threshold voltage of MAX6385XS41D3-T and how stable is it over temperature?
The MAX6385XS41D3-T has a nominal reset threshold of 4.10V, with guaranteed tolerance of ±2.5% across −40°C to +125°C. This corresponds to a min/max range of 4.00V to 4.20V at +25°C and 3.90V to 4.30V over full temperature range. Its 60ppm/°C tempco ensures minimal drift during thermal cycling, critical for automotive and industrial applications where ambient temperature varies widely. The MAX6385XS41D3-T uses factory-laser-trimmed bandgap references to achieve this stability without external components.
Does MAX6385XS41D3-T support manual reset, and what are the electrical requirements for the MR pin?
Yes, MAX6385XS41D3-T includes a dedicated MR (manual reset) input that is active-low. It features an internal 63kΩ pullup resistor to VCC, allowing direct connection of a normally-open momentary switch between MR and GND. The MR pin accepts TTL/CMOS logic levels: VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC for VTH < 4V. Minimum pulse width is 1µs, and it rejects glitches up to 100ns. No external debounce circuitry is needed - the MAX6385XS41D3-T handles it internally.
What is the function of the RESET output on MAX6385XS41D3-T, and how does it behave during brownout?
The RESET output of MAX6385XS41D3-T is an active-high push-pull driver. During normal operation (VCC > 4.10V), RESET is driven low. When VCC falls below the 4.10V threshold, RESET immediately transitions high and remains high for a minimum of 140ms after VCC rises back above threshold. Crucially, the MAX6385XS41D3-T guarantees correct RESET logic state down to VCC = 1V - meaning it continues asserting high even during deep brownout, preventing premature MCU release. This behavior is verified across −40°C to +125°C.
Can MAX6385XS41D3-T be used in automotive applications, and what qualification does it hold?
Yes, MAX6385XS41D3-T is AEC-Q100 qualified for automotive use. While the base part number does not include the "/V" suffix (which denotes automotive-grade screening), its underlying MAX6385XSxxDx series is specified for −40°C to +125°C operation and meets AEC-Q100 stress test requirements. The device's ±2.5% threshold accuracy, 140ms timeout stability over temperature, and 1.0V–5.5V operating range make it suitable for engine control units, ADAS domain controllers, and infotainment power supervisors where robust reset behavior is mandatory.
What package type and dimensions does MAX6385XS41D3-T use, and is it RoHS-compliant?
MAX6385XS41D3-T is supplied in a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with 0.65mm pin pitch. It is lead(Pb)-free and RoHS-compliant, indicated by the "+" suffix in the part number. The package uses JEDEC-standard land pattern 90-0187 and offers thermal resistance θJA = 322.6°C/W on multilayer boards. Its small footprint and compatibility with standard reflow profiles make it ideal for high-density portable electronics assemblies.
MAX6385XS41D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.1V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS41D3-T FAQ
1.How can I place an order for MAX6385XS41D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS41D3-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 MAX6385XS41D3-T reliable?
The price and inventory of MAX6385XS41D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS41D3-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS41D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS41D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS41D3-T?
MAX6385XS41D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS41D3-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 MAX6385XS41D3-T?
For technical support, including MAX6385XS41D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS41D3-T requirements.
6.How does Aetrix verify that MAX6385XS41D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS41D3-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 MAX6385XS41D3-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS41D3-T?
All MAX6385XS41D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS41D3-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 MAX6385XS41D3-T part is unused and in its original packaging.
Return procedure for MAX6385XS41D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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