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Analog Devices Inc./Maxim Integrated MAX6385XS23D5-T
- Part No.:
- MAX6385XS23D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS23D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,817
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Product details
Overview
MAX6385XS23D5-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 2.31V reset threshold, 280ms minimum VCC reset timeout, and debounced manual reset input (MR). It monitors single supply voltage (VCC) in battery-powered or space-constrained embedded systems, consuming only 3μA at +1.8V and guaranteeing valid reset output down to VCC = 1V. Designed for reliable power-up/brownout detection in microcontroller-based equipment.
For engineers reviewing the MAX6385XS23D5-T datasheet, MAX6385XS23D5-T pinout, MAX6385XS23D5-T application, or MAX6385XS23D5-T equivalent, key selection criteria include its 2.31V ±2.5% threshold accuracy over –40°C to +125°C, 4-pin SC70 package footprint, MR input with internal 63kΩ pullup, and compatibility with dual-voltage monitoring systems requiring auxiliary reset capability via external resistor dividers.
Technical Context
The MAX6385XS23D5-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across temperature, paired with a monotonic RC-based timeout timer ensuring ≥280ms reset assertion after VCC recovery. Its active-high push-pull RESET output drives high during fault conditions and deasserts cleanly without external pullup.
It integrates a debounced manual reset input (MR) with 1μs minimum pulse width support and 100ns glitch rejection, internally pulled up to VCC via 63kΩ. Unlike MAX6387–MAX6389 variants, it lacks RESET IN functionality but shares pin-compatible packaging and timing options with the MAX6384/MAX6386 family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V (nominal), ±2.5% over –40°C to +125°C - ensures stable trip point across automotive/industrial temperature ranges |
| VCC Reset Timeout | 280ms (minimum) - guarantees sufficient processor hold time during supply recovery |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor, reduces BOM count |
| Manual Reset Input | MR with internal 63kΩ pullup - supports direct switch-to-GND connection without external components |
| Operating Voltage Range | +1.0V to +5.5V - supports operation down to brownout levels while maintaining reset validity |
| Reset Output Validity | Guaranteed down to VCC = 1V - ensures deterministic logic state during deep undervoltage events |
Pinout & Package
MAX6385XS23D5-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 high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage source - connects directly to system rail being supervised |
| 2 | RESET | Active-high push-pull reset output - drives high during fault; sinks current when asserted low during startup/brownout |
| 3 | MR | Active-low manual reset input - initiates reset when pulled below 0.3×VCC; internally pulled up to VCC |
| 4 | GND | Ground reference for all internal comparators and output drivers - must be connected to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.31V with ±2.5% tolerance over full temperature range - eliminates external resistor calibration |
| Low quiescent current | 3μA at +1.8V - extends battery life in portable instrumentation and wearables |
| Debounced manual reset | 100ns glitch rejection and 1μs minimum pulse width - prevents false resets from mechanical switch bounce or EMI |
| Valid reset output at low VCC | Functional down to VCC = 1V - ensures safe processor initialization even during severe undervoltage |
| Push-pull active-high RESET | No external pullup required - simplifies layout and improves noise immunity on reset line |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters requiring long shelf life and reliable cold-start behavior. IC Role / Device Role / Timing Role: Monitors main Li-ion supply (2.8V–4.2V) and asserts active-high RESET to ARM Cortex-M0+ MCU during brownout. Use Value: 280ms timeout ensures firmware completes critical EEPROM save before power loss; 3μA ICC extends 10-year shelf life. |
Use Scenario: DIN-rail mounted programmable logic controllers with isolated 3.3V I/O rails subject to transient surges. IC Role / Device Role / Timing Role: Supervises 3.3V I/O supply and provides MR-triggered reset during field service or configuration updates. Use Value: MR input with internal pullup eliminates external resistor; ±2.5% threshold stability prevents spurious resets in 85°C cabinet environments. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: 12V-to-3.3V converted subsystems in door modules where load dump transients threaten MCU operation. IC Role / Device Role / Timing Role: Resets microcontroller upon detected 3.3V rail collapse caused by alternator ripple or battery disconnect. Use Value: Negative-going transient immunity (per MAX6385XS23D5-T characterization curves) suppresses false triggers from <100µs glitches. |
Use Scenario: Revenue-grade electricity meters with dual-supply architecture (main AC-derived + backup supercapacitor). IC Role / Device Role / Timing Role: Supervises 3.3V logic rail and coordinates graceful shutdown when AC fails and backup takes over. Use Value: Valid RESET down to VCC = 1V allows controlled state save even as supercapacitor discharges below 2V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384XS23D5-T | Same 2.31V threshold, 280ms timeout, and 4-pin SC70 package - differs only in active-low push-pull RESET output | Requires inverted reset logic on host MCU; incompatible with systems expecting active-high assertion | Select when existing design uses active-low reset inputs and board layout cannot accommodate level-shifting. |
| TLV803EB23DBZR | 2.32V threshold, 280ms timeout, SOT-23-3 package - lacks MR input and has higher 8μA ICC at +1.8V | Suitable only for basic VCC supervision without manual intervention; no field-service reset capability | Choose for cost-sensitive, space-constrained applications where MR is unnecessary and 5μA extra current is acceptable. |
Compared with MAX6385XS23D5-T, MAX6384XS23D5-T requires MCU-level logic inversion and offers identical timing/accuracy but different polarity, while TLV803EB23DBZR sacrifices MR functionality and doubles supply current to fit a smaller 3-pin footprint - making MAX6385XS23D5-T optimal for designs needing robust manual reset and ultra-low power in minimal area.
Availability
MAX6385XS23D5-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for MAX6385XS23D5-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 reliability, low power, and small form factors.
The MAX6381–MAX6390 family delivers single/dual low-voltage μP reset circuits targeting battery-powered and space-constrained embedded systems where guaranteed reset behavior under brownout and transient conditions is critical.
FAQ
What is the exact reset threshold voltage of the MAX6385XS23D5-T?
The MAX6385XS23D5-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, where suffix "23" corresponds to VTH(nom) = 2.31V, VTH(min) = 2.26V, and VTH(max) = 2.37V at +25°C.
Does the MAX6385XS23D5-T support manual reset functionality?
Yes, the MAX6385XS23D5-T includes a debounced manual reset input (MR) pin that asserts reset when pulled low. It features an internal 63kΩ pullup resistor to VCC, allowing direct connection of a momentary switch to GND without external components. The MR input supports 1μs minimum pulse width and rejects 100ns glitches, as specified in the Electrical Characteristics table.
What package type and dimensions does the MAX6385XS23D5-T use?
The MAX6385XS23D5-T is supplied in a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant, lead(Pb)-free package is optimized for high-density PCB assembly and matches the footprint of other members in the MAX6384–MAX6390 series with 4-pin SC70 configuration.
How long does the reset signal remain asserted after VCC recovers above threshold?
The MAX6385XS23D5-T asserts its active-high RESET output for a minimum of 280ms after VCC rises above the 2.31V threshold. This reset timeout period (denoted by suffix "D5") is guaranteed across temperature and supply voltage, ensuring sufficient hold time for microcontrollers to complete power-on initialization sequences reliably.
Is the MAX6385XS23D5-T compatible with systems requiring reset assertion down to very low supply voltages?
Yes, the MAX6385XS23D5-T guarantees valid RESET output state down to VCC = 1.0V, as explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections. This ensures deterministic reset behavior during deep brownout conditions where other supervisors may fail to maintain logic integrity.
MAX6385XS23D5-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:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS23D5-T FAQ
1.How can I place an order for MAX6385XS23D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS23D5-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 MAX6385XS23D5-T reliable?
The price and inventory of MAX6385XS23D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS23D5-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS23D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS23D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS23D5-T?
MAX6385XS23D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS23D5-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 MAX6385XS23D5-T?
For technical support, including MAX6385XS23D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS23D5-T requirements.
6.How does Aetrix verify that MAX6385XS23D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS23D5-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 MAX6385XS23D5-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS23D5-T?
All MAX6385XS23D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS23D5-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 MAX6385XS23D5-T part is unused and in its original packaging.
Return procedure for MAX6385XS23D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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