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Analog Devices Inc./Maxim Integrated MAX6385XS41D4-T
- Part No.:
- MAX6385XS41D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS41D4-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,927
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Product details
Overview
MAX6385XS41D4-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 4.10V reset threshold, 1120ms VCC reset timeout, and debounced manual reset input. It monitors +1.8V to +5.0V supply rails in space-constrained embedded systems, consuming only 3μA at +1.8V and guaranteeing valid reset output down to VCC = 1V. Used in battery-powered controllers and critical microprocessor power-up sequencing.
For engineers reviewing the MAX6385XS41D4-T datasheet, MAX6385XS41D4-T pinout, MAX6385XS41D4-T application, or MAX6385XS41D4-T equivalent, key selection criteria include its 4.10V ±2.5% threshold accuracy over –40°C to +125°C, 4-pin SC70 package, MR input with internal 63kΩ pullup, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6385XS41D4-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 4.10V threshold, with hysteresis and temperature compensation (60ppm/°C tempco). Its internal monostable timer generates a guaranteed minimum 1120ms reset assertion after VCC recovery.
It features a dedicated active-low manual reset input (MR) with 1µs minimum pulse width support, 100ns glitch rejection, and 200ns MR-to-RESET delay. The push-pull RESET output drives high during reset assertion and guarantees VOH ≥ 0.8×VCC at ISOURCE = 150µA down to VCC = 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.10V nominal, ±2.5% over –40°C to +125°C - ensures reliable brownout detection across automotive and industrial temperature ranges |
| VCC Reset Timeout | 1120ms minimum - provides sufficient hold-off time for slow-ramping power supplies and complex boot sequences |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable instrumentation |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset signaling even during deep brownout conditions down to 1V |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external pullup, simplifying PCB layout and reducing BOM count |
| Reset Output Type | Active-high push-pull - directly interfaces with standard CMOS μP reset inputs without external pullup resistors |
| Transient Immunity | 35µs max negative VCC glitch rejection at 100mV overdrive - prevents false resets in electrically noisy environments |
Pinout & Package
MAX6385XS41D4-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, suitable for high-density portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - must be decoupled with 0.1µF capacitor near pin for transient immunity |
| 2 | RESET | Active-high push-pull reset output - drives high during reset assertion; sinks current when deasserted |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; logic-low pulse ≥1µs forces reset |
| 4 | GND | Analog and digital ground reference - requires low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.10V with ±2.5% tolerance over full temperature range - eliminates external resistor divider calibration |
| Debounced manual reset input | 100ns glitch rejection and 1µs minimum pulse width - enables direct switch connection without RC filtering |
| Low-voltage reset validity | Guaranteed RESET output state down to VCC = 1.0V - ensures deterministic behavior during deep undervoltage events |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on monitoring applications such as smart meters and wearables |
| Robust transient immunity | Validates VCC glitches ≤35µs at 100mV overdrive - suppresses noise-induced resets in motor-drive or RF co-location scenarios |
Applications
| Battery-Powered Instrumentation | Industrial PLC Controllers |
|---|---|
Use Scenario: Portable handheld multimeter with lithium coin-cell supply and cold-temperature operation requirement. IC Role / Device Role / Timing Role: Monitors main 3.3V rail and asserts active-high RESET to MSP430 MCU during brownout, with 1120ms timeout ensuring stable ADC reference settling. Use Value: 3μA supply current extends battery life beyond 5 years; 4.10V threshold prevents premature reset during 3.3V rail sag under load. | Use Scenario: DIN-rail mounted programmable logic controller with dual 24V/5V supplies and EMI-prone factory floor environment. IC Role / Device Role / Timing Role: Supervises 5V logic rail and provides debounced manual reset via front-panel pushbutton; immune to 35µs VCC transients induced by nearby contactor switching. Use Value: Internal 63kΩ MR pullup reduces component count; push-pull output eliminates external pullup, improving noise margin on long reset traces. |
| Automotive Body Control Module | Medical Diagnostic Handheld |
Use Scenario: 12V-powered BCM with LDO-regulated 3.3V domain, requiring AEC-Q100 compliance and cold-cranking resilience. IC Role / Device Role / Timing Role: Resets ARM Cortex-M0+ processor during ignition sequence; 4.10V threshold avoids spurious reset during 6V cranking dips while ensuring clean startup above 4.1V. Use Value: ±2.5% threshold accuracy over –40°C to +125°C meets automotive qualification; 4-pin SC70 footprint saves board area in tight ECU layouts. | Use Scenario: FDA-class II ultrasound probe with rechargeable Li-ion battery and strict low-power sleep mode requirements. IC Role / Device Role / Timing Role: Provides fail-safe reset to ADuCM360 analog microcontroller during battery voltage decay; 1120ms timeout accommodates slow LDO stabilization after wake-up. Use Value: Valid RESET output down to VCC = 1.0V ensures deterministic state recovery even at end-of-discharge; RoHS-compliant SC70 package satisfies medical material restrictions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | 3.08V reset threshold, 240ms timeout, no MR input, 3-pin SOT23 | Lacks manual reset and longer timeout; suited for simpler, cost-sensitive applications | Select when 3.08V threshold matches system rail and MR functionality is unnecessary |
| TPS3808G33DBVR | 3.3V threshold, adjustable timeout (1ms–10s), open-drain output, 5-pin SOT23 | Requires external pullup; offers wider timeout range but higher 12μA quiescent current | Choose for designs needing programmable timeout or compatibility with legacy open-drain reset buses |
Compared with MAX809TRD3-T and TPS3808G33DBVR, MAX6385XS41D4-T delivers precise 4.10V supervision with integrated MR and ultra-low 3μA current in a compact 4-pin SC70, making it optimal for battery-critical, space-constrained systems requiring deterministic reset timing and manual intervention capability.
Availability
MAX6385XS41D4-T is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial PLC controllers, automotive body control modules, and medical diagnostic handhelds requiring stable component supply and long-term lifecycle support.
Supply support for MAX6385XS41D4-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.
The MAX6381–MAX6390 family targets low-power microprocessor supervision in space- and energy-constrained systems, emphasizing factory-trimmed accuracy, wide temperature operation, and minimal external components.
FAQ
What is the exact reset threshold voltage of the MAX6385XS41D4-T?
The MAX6385XS41D4-T has a factory-set nominal reset threshold of 4.10V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet (suffix "41"), and applies specifically to the MAX6385XS41D4-T variant-not the broader MAX6385 family.
Does the MAX6385XS41D4-T support manual reset functionality?
Yes, the MAX6385XS41D4-T includes a dedicated active-low manual reset input (MR) with internal 63kΩ pullup to VCC. A logic-low pulse ≥1µs on MR forces reset assertion for the full 1120ms timeout period. This feature is explicitly documented for MAX6385 in the Pin Description and Features sections, and the "XS" prefix confirms 4-pin SC70 packaging with MR support.
What package type and dimensions does the MAX6385XS41D4-T use?
The MAX6385XS41D4-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant package is confirmed in the Ordering Information table and Package Information section, and is distinct from the 3-pin SC70 (used for MAX6381–MAX6383) and 6-pin µDFN variants.
How does the MAX6385XS41D4-T behave during deep brownout conditions?
The MAX6385XS41D4-T guarantees valid RESET output state down to VCC = 1.0V, as specified in Electrical Characteristics. Its active-high push-pull output maintains VOH ≥ 0.8×VCC at ISOURCE = 150µA even at 1.8V, ensuring deterministic reset signaling during severe undervoltage events-critical for safe shutdown in battery-powered systems.
Is the MAX6385XS41D4-T qualified for automotive applications?
No, the MAX6385XS41D4-T is not automotive-qualified. While the MAX6381–MAX6390 family includes /V automotive variants (e.g., MAX6385XS41D4/V+T), the "-T" suffix in MAX6385XS41D4-T indicates standard commercial/industrial grade. Automotive versions require explicit "/V" in the part number and are listed separately in the Ordering Information table.
MAX6385XS41D4-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:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS41D4-T FAQ
1.How can I place an order for MAX6385XS41D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS41D4-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 MAX6385XS41D4-T reliable?
The price and inventory of MAX6385XS41D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS41D4-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS41D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS41D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS41D4-T?
MAX6385XS41D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS41D4-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 MAX6385XS41D4-T?
For technical support, including MAX6385XS41D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS41D4-T requirements.
6.How does Aetrix verify that MAX6385XS41D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS41D4-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 MAX6385XS41D4-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS41D4-T?
All MAX6385XS41D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS41D4-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 MAX6385XS41D4-T part is unused and in its original packaging.
Return procedure for MAX6385XS41D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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