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Analog Devices Inc./Maxim Integrated MAX6385XS23D6-T
- Part No.:
- MAX6385XS23D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS23D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,919
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Product details
Overview
The MAX6385XS23D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.31V reset threshold (±2.5% over -40°C to +125°C), 560ms minimum VCC reset timeout, and debounced manual reset input (MR). It operates from 1.0V to 5.5V supply voltage, draws only 3μA at 1.8V, and guarantees valid reset state down to VCC = 1V - ideal for battery-powered embedded controllers requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6385XS23D6-T datasheet, MAX6385XS23D6-T pinout, MAX6385XS23D6-T application, or MAX6385XS23D6-T equivalent, key selection considerations include its 4-pin SC70 package, MR input with internal 63kΩ pullup, ±2.5% threshold accuracy across automotive temperature range, and compatibility with dual-voltage monitoring systems where auxiliary reset inputs are not required.
Technical Context
This device implements a precision bandgap-based reset comparator with 60ppm/°C tempco and 35µs typical VCC-to-reset delay under 10mV/µs slew rate. Its internal timer generates a fixed 560ms (min) reset assertion period after VCC rises above threshold or after MR release.
The MR input features 1µs minimum pulse width support, 100ns glitch rejection, and 200ns MR-to-reset propagation delay. Reset output remains valid during VCC decay to 1V, ensuring deterministic μP initialization in low-voltage brownout conditions without external level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V (nominal), ±2.5% over -40°C to +125°C - ensures stable reset activation across automotive temperature range |
| VCC Reset Timeout | 560ms (minimum) - provides sufficient hold 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 direct interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup resistor and reduces BOM count |
| Manual Reset Input | MR with internal 63kΩ pullup - allows momentary switch connection without external biasing components |
| Reset Propagation Delay | 35µs (VCC falling), 200ns (MR asserted) - enables fast response to supply glitches and operator-initiated resets |
Pinout & Package
MAX6385XS23D6-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 space-constrained PCB layouts in portable and automotive electronics.
| 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 detection |
| 2 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted; no external pullup required |
| 3 | MR | Active-low manual reset input - initiates reset on logic-low transition; internally pulled up to VCC via 63kΩ resistor |
| 4 | GND | Analog and 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 | 2.31V with ±2.5% tolerance over full -40°C to +125°C range - eliminates need for external calibration or trimming resistors |
| Debounced manual reset input | 100ns glitch rejection and 1µs minimum pulse width - prevents spurious resets from mechanical switch bounce or EMI |
| Low-voltage operation guarantee | Valid RESET output state maintained down to VCC = 1V - ensures deterministic μP startup even during deep brownout |
| Negative-going transient immunity | Withstands VCC glitches up to 350µs duration at 100mV overdrive - suppresses false resets caused by supply noise |
| Automotive-grade qualification | AEC-Q100 qualified (when ordered with /V suffix) - validated for use in engine control, ADAS, and infotainment modules |
Applications
| Industrial PLC Controller | Medical Infusion Pump |
|---|---|
Use Scenario: Monitors 3.3V I/O supply and 1.2V core rail in a DIN-rail mounted programmable logic controller exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary VCC supervisor providing power-on reset and brownout detection for ARM Cortex-M7 MCU; asserts active-high RESET until 3.3V stabilizes for ≥560ms. Use Value: Prevents firmware corruption during unstable AC/DC converter startup and ensures deterministic recovery after line sags - critical for SIL-2 safety compliance. | Use Scenario: Embedded in battery-operated infusion pump with dual 1.8V sensor interface and 3.3V display subsystem. IC Role / Device Role / Timing Role: Supervises main 3.3V rail while enabling operator-triggered recalibration via MR button; guarantees reset validity down to 1V during Li-ion discharge. Use Value: Enables safe, repeatable recalibration without MCU lockup; ultra-low 3μA quiescent current extends single-charge runtime beyond 18 months. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Used in BCM subassembly monitoring 5V CAN transceiver supply and 3.3V microcontroller domain in passenger compartment. IC Role / Device Role / Timing Role: Provides AEC-Q100-compliant reset signaling with 2.31V threshold aligned to 3.3V LDO dropout margin; MR supports service-mode diagnostics. Use Value: Ensures fail-safe MCU initialization during cold-cranking (battery dip to 6V) and hot-soak conditions (+125°C ambient). | Use Scenario: Supervises 3.3V RTC and metering IC supply in ANSI C12.22–compliant smart electricity meter with supercap backup. IC Role / Device Role / Timing Role: Detects brownout on primary 3.3V rail and asserts RESET to halt计量 before data corruption; 560ms timeout accommodates supercap recharge delay. Use Value: Meets ANSI C12.1 and IEC 62053-21 requirements for tamper-resistant power-fail data retention and graceful shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR23D6+T | Same 2.31V threshold and 560ms timeout, but active-low open-drain output; requires external pullup resistor | Lacks MR input; not suitable for systems requiring manual reset capability | Select when board layout already includes pullup or when active-low reset polarity is mandatory for legacy MCU interface |
| TPS3808G33DBVR | 2.93V threshold (not 2.31V); 200ms timeout (not 560ms); 1.8V–6.5V operating range; no MR input | Higher threshold better suited for 3.3V-only systems; shorter timeout insufficient for slow-start regulators | Choose only if redesign accommodates different threshold/timing and MR functionality is implemented elsewhere |
Compared with MAX6326XR23D6+T and TPS3808G33DBVR, the MAX6385XS23D6-T uniquely combines precise 2.31V supervision, 560ms hold time, active-high push-pull output, and integrated MR - making it optimal for new designs requiring compact, self-contained reset control without external components.
Availability
MAX6385XS23D6-T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical infusion pumps, automotive body control modules, and smart energy meters requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant variants.
Supply support for MAX6385XS23D6-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 medical applications, emphasizing low power, high reliability, and extended temperature performance.
The MAX6381–MAX6390 family delivers single- and dual-supply microprocessor supervisory circuits optimized for ultra-low quiescent current, tight threshold accuracy, and robust noise immunity in harsh environments.
FAQ
What is the exact reset threshold voltage of the MAX6385XS23D6-T?
The MAX6385XS23D6-T has a factory-set nominal reset threshold of 2.31V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet (suffix "23" corresponds to 2.26V min / 2.31V nom / 2.37V max at +25°C).
Does the MAX6385XS23D6-T support manual reset functionality?
Yes, the MAX6385XS23D6-T includes a debounced manual reset input (MR) on Pin 3. Driving MR low forces an immediate reset assertion, which remains active for the full 560ms timeout after MR is released. An internal 63kΩ pullup resistor eliminates the need for external biasing.
What package type and dimensions does the MAX6385XS23D6-T use?
The MAX6385XS23D6-T is supplied in a 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is specified as 90-0187, and it is RoHS-compliant (denoted by the "+T" suffix).
Can the MAX6385XS23D6-T operate reliably at very low supply voltages?
Yes, the MAX6385XS23D6-T guarantees valid reset output state down to VCC = 1.0V. Its active-high push-pull output remains functional and correctly asserted/deasserted throughout this range, enabling safe μP initialization during deep brownout conditions common in battery-depleted systems.
Is the MAX6385XS23D6-T qualified for automotive applications?
The base MAX6385XS23D6-T is not automotive-qualified; however, the /V variant (e.g., MAX6385XS23D6/V+T) is AEC-Q100 qualified for Grade 1 (-40°C to +125°C). The "/V" suffix must be explicitly specified in the order code to receive the automotive-qualified version.
MAX6385XS23D6-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:
- 2.31V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS23D6-T FAQ
1.How can I place an order for MAX6385XS23D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS23D6-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 MAX6385XS23D6-T reliable?
The price and inventory of MAX6385XS23D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS23D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS23D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS23D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS23D6-T?
MAX6385XS23D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS23D6-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 MAX6385XS23D6-T?
For technical support, including MAX6385XS23D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS23D6-T requirements.
6.How does Aetrix verify that MAX6385XS23D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS23D6-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 MAX6385XS23D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS23D6-T?
All MAX6385XS23D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS23D6-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 MAX6385XS23D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS23D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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