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Analog Devices Inc./Maxim Integrated MAX6385XS23D2-T
- Part No.:
- MAX6385XS23D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS23D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,931
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Product details
Overview
MAX6385XS23D2-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 2.31V reset threshold, 20ms minimum reset timeout, and manual reset input (MR), operating from 1.0V to 5.5V supply while consuming only 3μA at 1.8V - used in battery-powered controllers and portable instrumentation for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6385XS23D2-T datasheet, MAX6385XS23D2-T pinout, MAX6385XS23D2-T application, or MAX6385XS23D2-T equivalent, key selection considerations include its active-high push-pull RESET output, guaranteed valid operation down to VCC = 1V, ±2.5% reset threshold accuracy over –40°C to +125°C, and MR input with internal 63kΩ pullup resistor.
Technical Context
The MAX6385XS23D2-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 2.31V threshold, with an internal timer enforcing a 20ms minimum reset assertion period after VCC rises above threshold. Its MR input directly controls reset assertion independent of VCC level, with glitch rejection of 100ns and 1μs minimum pulse width requirement.
This device belongs to the MAX6384–MAX6390 family featuring 4-pin SC70 packaging, active-high push-pull RESET output, and integrated MR functionality - distinct from open-drain or active-low variants and excluding auxiliary RESET IN capability. It guarantees correct RESET logic state for VCC ≥ 1V and provides negative-going VCC transient immunity up to defined overdrive limits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V nominal (±2.5% over –40°C to +125°C); ensures reliable detection of 2.3V system rail brownout. |
| Reset Timeout | 20ms minimum; holds μP in reset long enough for stable clock and supply settling after power recovery. |
| Supply Current | 3μA at VCC = 1.8V; enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Operating Voltage | 1.0V to 5.5V; supports direct interface with 1.2V/1.8V/2.5V/3.3V/5V logic domains without level shifting. |
| MR Input Pullup | 63kΩ internal resistor; eliminates external component need for momentary switch implementation. |
| RESET Output Type | Active-high push-pull; drives high-impedance loads directly without external pullup/pulldown resistors. |
| Reset Assertion Delay | 35μs max (VCC falling at 10mV/µs); responds rapidly to fast supply dips without false triggering. |
Pinout & Package
MAX6385XS23D2-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 portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and serves as reset trigger source. |
| 2 | RESET | Active-high push-pull output; asserts high during reset condition and deasserts low when VCC > 2.31V for ≥20ms. |
| 3 | MR | Active-low manual reset input; forces reset when pulled low; internally pulled up to VCC via 63kΩ resistor. |
| 4 | GND | Ground reference for all internal comparators, timers, and output drivers; must be low-impedance connection. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 2.31V threshold | Eliminates external resistor divider; reduces BOM count and layout area in compact μP systems. |
| 20ms reset timeout | Ensures sufficient hold time for PLL lock, memory initialization, and peripheral wake-up in embedded controllers. |
| MR input with 63kΩ pullup | Supports direct connection of normally-open tactile switch to GND - no external components required. |
| Valid RESET down to VCC = 1V | Guarantees deterministic reset behavior during deep brownout or battery depletion scenarios. |
| 3μA supply current at 1.8V | Extends battery life in always-on sensor nodes where quiescent power dominates energy budget. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Wearable ECG patch powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 2.3V analog front-end supply and asserts active-high RESET to ARM Cortex-M0+ MCU on brownout. Use Value: 3μA quiescent current extends battery life beyond 2 years; 20ms timeout ensures ADC calibration completes before firmware execution. |
Use Scenario: DIN-rail mounted remote I/O unit with 24V DC input converted to 3.3V/2.3V rails for FPGA and analog ICs. IC Role / Device Role / Timing Role: Supervises 2.3V digital core rail and provides manual reset via front-panel button connected to MR pin. Use Value: ±2.5% threshold accuracy over –40°C to +85°C prevents spurious resets in uncontrolled cabinet environments. |
| Smart Meter Data Loggers | Automotive Body Control Units |
|
Use Scenario: Battery-backed data logger capturing utility grid parameters during outages. IC Role / Device Role / Timing Role: Detects collapse of 2.3V RTC/sensor rail and holds microcontroller in reset until backup capacitor recovers. Use Value: Valid RESET assertion down to VCC = 1V ensures safe shutdown sequence even as backup cap discharges below 2.0V. |
Use Scenario: 12V automotive subsystem with LDO generating 2.3V for CAN transceiver and watchdog logic. IC Role / Device Role / Timing Role: Provides fail-safe reset initiation during cold-crank (4.5V dip) and monitors MR for service mode entry. Use Value: Negative-going transient immunity allows operation in noisy vehicle electrical systems without false resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS23D3-T | Same 2.31V threshold but 140ms reset timeout instead of 20ms. | Suitable for systems requiring longer reset hold time (e.g., FPGA configuration loading). | Select when extended reset duration is needed; otherwise MAX6385XS23D2-T provides optimal timing for fast-boot MCUs. |
| TLV803EB23DBZR | 2.32V threshold, 240ms timeout, SOT-23-3 package, no MR input. | Lacks manual reset capability and uses smaller 3-pin footprint; lower integration. | Choose only if MR is unused and board space is critical; MAX6385XS23D2-T offers superior feature set for interactive systems. |
Compared with MAX6385XS23D3-T and TLV803EB23DBZR, the MAX6385XS23D2-T uniquely balances short 20ms reset timing, integrated MR functionality, and ultra-low 3μA supply current - making it optimal for responsive, battery-sensitive embedded controllers requiring field-service reset capability.
Availability
MAX6385XS23D2-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart meter data loggers, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS23D2-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 reliability, and small form factor.
The MAX6384–MAX6390 product line delivers single-supply microprocessor supervisory circuits optimized for battery-powered and space-constrained systems requiring accurate voltage monitoring, configurable reset timing, and manual reset capability.
FAQ
What is the exact reset threshold voltage of the MAX6385XS23D2-T?
The MAX6385XS23D2-T has a factory-set nominal reset threshold of 2.31V, with 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, where suffix "23" corresponds to VTH(nom) = 2.31V, VTH(min) = 2.26V, and VTH(max) = 2.37V.
Does the MAX6385XS23D2-T support manual reset functionality?
Yes, the MAX6385XS23D2-T includes a dedicated MR (manual reset) input pin with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate active-high RESET assertion, which remains asserted for the full 20ms timeout after MR is released. This feature is explicitly documented in the Pin Description and Features sections.
What package type and dimensions does the MAX6385XS23D2-T use?
The MAX6385XS23D2-T is packaged in a 4-pin SC70 (SOT-323) outline, with package code X4+1, outline number 21-0098, and land pattern 90-0187. Its physical dimensions are 2.0mm × 2.1mm × 0.95mm, and it is RoHS-compliant as indicated by the "+T" suffix.
Is the MAX6385XS23D2-T compatible with automotive applications?
No - the MAX6385XS23D2-T is not automotive-qualified. Automotive versions carry the "/V" suffix (e.g., MAX6385XS23D2/V+T). The "-T" suffix indicates tape-and-reel packaging, and absence of "/V" confirms this part is rated for industrial temperature range (–40°C to +125°C) but not AEC-Q100 qualified.
What is the supply current consumption of the MAX6385XS23D2-T at 3.6V?
At VCC = 3.6V and TA = +25°C, the MAX6385XS23D2-T consumes 6μA typical (max 11μA) supply current, as specified in the Electrical Characteristics table under "VCC Supply Current". This ultra-low quiescent current supports multi-year operation in energy-harvesting and battery-backed systems.
MAX6385XS23D2-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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS23D2-T FAQ
1.How can I place an order for MAX6385XS23D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS23D2-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 MAX6385XS23D2-T reliable?
The price and inventory of MAX6385XS23D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS23D2-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS23D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS23D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS23D2-T?
MAX6385XS23D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS23D2-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 MAX6385XS23D2-T?
For technical support, including MAX6385XS23D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS23D2-T requirements.
6.How does Aetrix verify that MAX6385XS23D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS23D2-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 MAX6385XS23D2-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS23D2-T?
All MAX6385XS23D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS23D2-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 MAX6385XS23D2-T part is unused and in its original packaging.
Return procedure for MAX6385XS23D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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