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Analog Devices Inc./Maxim Integrated MAX6385XS30D2-T
- Part No.:
- MAX6385XS30D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS30D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,109
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Product details
Overview
MAX6385XS30D2-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 3.00V reset threshold (±2.5% over -40°C to +125°C), 20ms minimum reset timeout, and manual reset input (MR). It monitors VCC in systems requiring reliable power-on reset and brownout protection down to 1.0V supply, consuming only 3μA at 1.8V. Used in portable microcontroller-based equipment where compact size and low quiescent current are critical.
For engineers reviewing the MAX6385XS30D2-T datasheet, MAX6385XS30D2-T pinout, MAX6385XS30D2-T application, or MAX6385XS30D2-T equivalent, key selection factors include its 4-pin SC70 package, MR debouncing capability, guaranteed reset validity down to VCC = 1V, and compatibility with dual-voltage monitoring architectures via external resistor networks.
Technical Context
The MAX6385XS30D2-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across temperature, paired with a monolithic timer for deterministic 20ms reset assertion after VCC recovery. Its internal 63kΩ MR pullup enables direct switch interfacing without external components.
Unlike open-drain variants, this device delivers active-high push-pull RESET output with VOH ≥ 0.8×VCC (at ISOURCE = 150µA, VCC ≥ 1.8V) and VOL ≤ 0.3V (at ISINK = 80µA, VCC ≥ 1.0V), ensuring robust logic-level compatibility with modern low-voltage microcontrollers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V nominal, ±2.5% over -40°C to +125°C - ensures consistent brownout detection across automotive/industrial temperature ranges |
| Reset Timeout | 20ms minimum - provides sufficient hold time for microcontroller core initialization before release |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year battery life in always-on sensor nodes |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion even during deep brownout conditions |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor, reduces BOM count |
| Manual Reset | Debounced MR input with 63kΩ internal pullup - allows momentary switch interface without external RC filtering |
| Package | 4-pin SC70 (X4+1 outline) - 1.6mm × 1.6mm footprint ideal for space-constrained portable designs |
Pinout & Package
MAX6385XS30D2-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), featuring 1.6mm × 1.6mm body size and 0.65mm lead pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary power supply input and monitored voltage rail; operates from 1.0V to 5.5V |
| 2 | RESET | Active-high push-pull reset output; drives high during fault condition, low otherwise |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC (63kΩ); asserts reset when pulled low |
| 4 | GND | Ground reference for all internal circuitry and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.00V with ±2.5% tolerance over full industrial temperature range eliminates external calibration |
| Guaranteed operation down to VCC = 1.0V | Ensures valid RESET state during severe brownout, preventing undefined MCU behavior |
| Integrated MR pullup resistor | 63kΩ internal pullup enables direct connection of momentary switch to GND-no external components required |
| Negative-going transient immunity | Rejects VCC glitches < 35µs duration (at 100mV overdrive), reducing false resets in noisy environments |
| Low-temperature coefficient | 60ppm/°C reset threshold drift minimizes threshold shift across operating temperature extremes |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG monitor requiring ultra-low standby current and reliable wake-up reset after battery insertion. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to ARM Cortex-M0+ during power-up and brownout events. Use Value: 3μA supply current extends single-CR2032 battery life beyond 5 years; 20ms timeout ensures complete flash initialization before firmware execution. | Use Scenario: DIN-rail mounted programmable logic controller with dual 3.3V/5V rails needing coordinated reset sequencing. IC Role / Device Role / Timing Role: Primary VCC supervisor for 3.3V logic rail, with MR enabling field-service reset via front-panel button. Use Value: Active-high push-pull output directly interfaces with 3.3V FPGA configuration pins; MR debounce prevents contact bounce-induced spurious resets. |
| Automotive Body Control Units | Smart Home Hub Power Management |
Use Scenario: CAN-connected door module subjected to load-dump transients and cold-cranking voltage sags. IC Role / Device Role / Timing Role: AEC-Q100 qualified supervisor monitoring 3.3V microcontroller supply under harsh automotive electrical conditions. Use Value: ±2.5% threshold accuracy maintains reset point stability across -40°C to +125°C; 35µs glitch rejection suppresses noise from alternator ripple. | Use Scenario: Wi-Fi-enabled home automation hub with USB-C PD input and multiple LDO outputs. IC Role / Device Role / Timing Role: Secondary supervisor for 1.8V SoC core rail, triggered by MR during OTA firmware update recovery. Use Value: 20ms timeout aligns with SoC internal POR timing; 4-pin SC70 saves PCB area in dense RF layout zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS30D3-T | 140ms minimum reset timeout vs. 20ms - longer assertion period for slower peripherals | Suitable for systems with extended clock stabilization or memory initialization sequences | Select when MCU requires >100ms reset hold time post-power-up |
| TPS3808G30DBVR | Active-low open-drain output; 3.0V threshold; 20ms timeout; 1.8–6.0V operation | Requires external pullup resistor; compatible with legacy reset bus topologies using shared active-low lines | Choose for existing designs using open-drain reset buses or TI-ecosystem integration |
Compared with MAX6385XS30D2-T, the D3 variant offers extended reset hold time for complex boot sequences, while TPS3808G30DBVR provides open-drain flexibility at the cost of added external component count and different logic polarity.
Availability
MAX6385XS30D2-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart home hub power management requiring stable component supply across long production lifecycles.
Supply support for MAX6385XS30D2-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 power, sensing, connectivity, and security applications in industrial, automotive, and computing markets.
The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed supervisory circuits optimized for battery-operated and thermally demanding embedded systems requiring guaranteed reset behavior across wide voltage and temperature ranges.
FAQ
What is the exact reset threshold voltage of MAX6385XS30D2-T and how stable is it over temperature?
The MAX6385XS30D2-T has a factory-set nominal reset threshold of 3.00V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This corresponds to a minimum threshold of 2.93V and maximum of 3.08V at temperature extremes, ensuring reliable brownout detection without calibration in automotive and industrial applications. The device's 60ppm/°C tempco further limits drift within that tolerance band.
Does MAX6385XS30D2-T require an external pullup resistor on the RESET pin?
No, MAX6385XS30D2-T does not require an external pullup resistor on the RESET pin because it features an active-high push-pull output driver. The internal circuitry actively drives the RESET pin high during reset assertion and low during normal operation, eliminating dependency on external passive components and simplifying PCB layout. This contrasts with open-drain variants like MAX6383 that mandate external pullups.
Can MAX6385XS30D2-T operate reliably when VCC drops below 1.8V?
Yes, MAX6385XS30D2-T is fully specified to operate down to VCC = 1.0V, with guaranteed RESET output validity (correct logic state) across that entire range. At VCC = 1.0V, it maintains VOL ≤ 0.3V (ISINK = 80µA) and VOH ≥ 0.8×VCC (ISOURCE = 1µA), ensuring interoperability with ultra-low-voltage MCUs. Its 3μA supply current at 1.8V and functional operation at 1.0V make it suitable for deep-brownout recovery scenarios.
What is the function of the MR pin on MAX6385XS30D2-T and how should it be interfaced?
The MR pin on MAX6385XS30D2-T is an active-low manual reset input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces immediate reset assertion, which remains active for the full 20ms timeout after MR is released. For implementation, connect a normally-open momentary switch between MR and GND; no external debounce circuitry is needed due to built-in filtering. Leaving MR unconnected defaults to VCC via the internal pullup, disabling manual reset.
Is MAX6385XS30D2-T pin-compatible with older Maxim reset supervisors like MAX809?
Yes, MAX6385XS30D2-T is explicitly pin-compatible with MAX809/MAX810/MAX803 and other legacy Maxim supervisors per the datasheet's feature list. It shares identical 4-pin SC70 pinout (VCC, RESET, MR, GND), enabling drop-in replacement in existing designs without PCB modification. However, designers must verify matching reset polarity (active-high), threshold (3.0V), and timeout (20ms) to ensure functional equivalence in the target application.
MAX6385XS30D2-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:
- 3V
- 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
MAX6385XS30D2-T FAQ
1.How can I place an order for MAX6385XS30D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS30D2-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 MAX6385XS30D2-T reliable?
The price and inventory of MAX6385XS30D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS30D2-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS30D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS30D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS30D2-T?
MAX6385XS30D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS30D2-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 MAX6385XS30D2-T?
For technical support, including MAX6385XS30D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS30D2-T requirements.
6.How does Aetrix verify that MAX6385XS30D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS30D2-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 MAX6385XS30D2-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS30D2-T?
All MAX6385XS30D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS30D2-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 MAX6385XS30D2-T part is unused and in its original packaging.
Return procedure for MAX6385XS30D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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