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Analog Devices Inc./Maxim Integrated MAX6385XS19D6-T
- Part No.:
- MAX6385XS19D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS19D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,283
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Product details
Overview
The MAX6385XS19D6-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 1.9V reset threshold, 560ms minimum VCC reset timeout, and manual reset input. It monitors +1.8V to +5.0V supply rails, consumes only 3μA at +1.8V, guarantees valid reset output down to VCC = 1V, and operates across –40°C to +125°C for use in battery-powered industrial controllers.
For engineers reviewing the MAX6385XS19D6-T datasheet, MAX6385XS19D6-T pinout, MAX6385XS19D6-T application, or MAX6385XS19D6-T equivalent, key selection criteria include its 1.9V ±2.5% threshold accuracy over temperature, 4-pin SC70 package footprint, active-high push-pull output drive capability, and integrated MR debouncing without external components.
Technical Context
This device implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over –40°C to +125°C and 60ppm/°C tempco, paired with a digitally controlled monostable timer for fixed 560ms reset assertion after VCC recovery. The internal 63kΩ MR pullup resistor enables direct connection of a momentary switch to GND without external biasing.
It features negative-going VCC transient immunity up to 35µs at 100mV overdrive, guaranteed RESET logic state validity down to VCC = 1V, and operates with no external components required beyond standard VCC decoupling. The active-high push-pull output drives loads up to 3.2mA sink or 800µA source while maintaining VOL ≤ 0.4V and VOH ≥ 0.8×VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.90V nominal, ±2.5% over –40°C to +125°C - ensures reliable brownout detection for 1.8V core supplies |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold-off time for slow-ramping power supplies or FPGA configuration |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT endpoint devices |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct μP reset input interface |
| MR Input | Debounced manual reset with 63kΩ internal pullup - allows momentary switch connection without RC filtering |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial control cabinet deployment |
| VCC Range | +1.0V to +5.5V - supports valid reset assertion during deep brownout and compatibility with 1.2V–5V logic domains |
Pinout & Package
MAX6385XS19D6-T uses a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, with 0.65mm pin pitch and thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - must be decoupled with ≥0.1μF ceramic capacitor close to pin |
| 2 | RESET | Active-high push-pull reset output - asserts high during fault; sinks 3.2mA / sources 800µA; valid down to VCC = 1V |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; 1µs minimum pulse width; rejects 100ns glitches |
| 4 | GND | Analog and digital ground reference - requires low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.9V threshold | Eliminates external resistor divider and calibration effort for 1.8V system monitoring |
| 560ms reset timeout | Matches typical boot-time requirements of ARM Cortex-M0/M3 microcontrollers and small FPGAs |
| 3μA supply current at 1.8V | Reduces quiescent power in always-on sensor nodes - extends CR2032 battery life beyond 10 years |
| Guaranteed operation down to VCC = 1V | Ensures deterministic reset behavior during deep undervoltage events without external level-shifting |
| Integrated MR pullup | Removes need for discrete 63kΩ resistor - simplifies BOM and PCB layout for compact handheld instruments |
Applications
| Industrial PLC I/O Module | Battery-Powered Data Logger |
|---|---|
Use Scenario: Monitors 1.8V FPGA configuration supply and 3.3V I/O bank in DIN-rail mounted programmable logic controller. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to FPGA and microcontroller upon 1.8V rail collapse. Use Value: 1.9V threshold matches 1.8V supply tolerance; 560ms timeout accommodates FPGA reconfiguration sequence. | Use Scenario: Powers continuous temperature/humidity sensing in remote environmental monitoring node using CR2032 cell. IC Role / Device Role / Timing Role: Resets microcontroller if main LDO drops below 1.9V during cold-temperature battery discharge. Use Value: 3μA quiescent current minimizes drain on primary cell; MR pin enables field firmware recovery via tactile switch. |
| Automotive Body Control Module | Medical Handheld Diagnostic Tool |
Use Scenario: Embedded in 12V-to-1.8V/3.3V power tree of door module, monitoring post-regulator outputs. IC Role / Device Role / Timing Role: Active-high reset generator interfacing directly to AEC-Q100 qualified MCU reset pin. Use Value: –40°C to +125°C rating and ±2.5% threshold accuracy ensure reliability across vehicle lifetime and ambient extremes. | Use Scenario: Ensures deterministic startup of ARM-based diagnostic engine after button-press power-on or low-battery shutdown. IC Role / Device Role / Timing Role: Provides MR-initiated reset with 560ms hold-off to prevent spurious restart during button contact bounce. Use Value: Internal MR debouncing removes need for software polling or external RC network - reduces firmware complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS19D3-T | Same 1.9V threshold and active-high push-pull output, but 140ms reset timeout | Suitable for fast-boot MCUs where 560ms hold-off is excessive | Select when shorter reset assertion meets system boot timing budget |
| TPS3123E19DBVR | 1.9V threshold, active-high push-pull, but 200ms timeout and 1.6V–6V VCC range | Lacks manual reset input; optimized for TI ecosystem designs | Choose when MR functionality is unnecessary and TI reference designs are used |
Compared with MAX6385XS19D6-T, the MAX6385XS19D3-T offers faster reset release for latency-sensitive systems, while the TPS3123E19DBVR trades MR capability for broader VCC range and tighter production tolerances - neither is pin-compatible, requiring PCB layout revision.
Availability
MAX6385XS19D6-T is available at Aetrix Electronics and suitable for industrial PLCs, battery-powered data loggers, automotive body control modules, and medical handheld diagnostic tools requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6385XS19D6-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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy reset supervision for space-constrained, battery-operated, and thermally demanding systems - with MAX6385XS19D6-T specifically targeting 1.8V/1.9V rail monitoring in compact SC70 form factor.
FAQ
What is the exact reset threshold voltage of the MAX6385XS19D6-T?
The MAX6385XS19D6-T has a factory-set nominal reset threshold of 1.90V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. At +25°C, the threshold falls between 1.85V and 1.95V per the datasheet's Reset Threshold table suffix "19". This value is laser-trimmed during production and does not require external calibration.
Does the MAX6385XS19D6-T support manual reset functionality?
Yes, the MAX6385XS19D6-T includes a debounced manual reset (MR) input on Pin 3. It features an internal 63kΩ pullup resistor to VCC, allowing direct connection of a normally open momentary switch to GND. The device asserts reset for the full 560ms timeout after MR is released, and rejects glitches shorter than 100ns - eliminating need for external RC filtering or firmware debounce logic.
What package type and dimensions does the MAX6385XS19D6-T use?
The MAX6385XS19D6-T is supplied in a lead-free, RoHS-compliant 4-pin SC70 package (outline number 21-0098, land pattern 90-0187). Its footprint measures 2.0mm × 2.1mm with 0.65mm pin pitch and maximum height of 0.95mm. Thermal resistance is θJA = 322.6°C/W on a multilayer PCB, making it suitable for dense industrial and portable layouts.
Can the MAX6385XS19D6-T operate reliably at VCC = 1.0V?
Yes, the MAX6385XS19D6-T guarantees correct reset output logic state down to VCC = 1.0V. Its push-pull output maintains VOL ≤ 0.4V (at 3.2mA sink) and VOH ≥ 0.8×VCC (at 800µA source) even at this minimum supply, ensuring interoperability with legacy 1.0V–1.2V logic families and deterministic behavior during deep brownout conditions.
How does the reset timeout period of the MAX6385XS19D6-T compare to other variants in the MAX6385 series?
The MAX6385XS19D6-T provides a fixed 560ms minimum reset timeout, corresponding to the "D6" suffix in its part number. Other MAX6385 variants offer timeouts ranging from 1ms (D1) to 1200ms (D7); for example, MAX6385XS19D3-T delivers 140ms, while MAX6385XS19D7-T provides 1200ms. All share identical threshold, output type, and MR functionality - timeout selection is purely for system boot timing alignment.
MAX6385XS19D6-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:
- 1.9V
- 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
MAX6385XS19D6-T FAQ
1.How can I place an order for MAX6385XS19D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS19D6-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 MAX6385XS19D6-T reliable?
The price and inventory of MAX6385XS19D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS19D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS19D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS19D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS19D6-T?
MAX6385XS19D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS19D6-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 MAX6385XS19D6-T?
For technical support, including MAX6385XS19D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS19D6-T requirements.
6.How does Aetrix verify that MAX6385XS19D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS19D6-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 MAX6385XS19D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS19D6-T?
All MAX6385XS19D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS19D6-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 MAX6385XS19D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS19D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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