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Analog Devices Inc./Maxim Integrated MAX6385XS30D7-T
- Part No.:
- MAX6385XS30D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS30D7-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,028
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Product details
Overview
MAX6385XS30D7-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.00V reset threshold, 1200ms 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 MAX6385XS30D7-T datasheet, MAX6385XS30D7-T pinout, MAX6385XS30D7-T application, or MAX6385XS30D7-T equivalent, key selection criteria include its active-high push-pull reset output, 3.00V ±2.5% threshold accuracy over temperature, 1200ms minimum VCC timeout, integrated MR pullup (63kΩ), and 4-pin SC70 package compatibility with space-constrained embedded designs.
Technical Context
The device implements a precision voltage comparator with ±2.5% threshold accuracy over –40°C to +125°C and 60ppm/°C tempco, paired with a monotonic timeout timer that ensures reset remains asserted for ≥1200ms after VCC exceeds 3.00V. Its internal MR pullup resistor (63kΩ) enables direct connection of a momentary switch to GND without external components.
Reset assertion logic responds to both VCC falling below 3.00V and MR being pulled low, with independent timeout periods: 1200ms for VCC recovery and 150ms for manual reset release. The push-pull output drives high during reset, sourcing up to 800µA at VCC ≥ 4.5V while maintaining VOH ≥ 0.8×VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% over –40°C to +125°C - ensures reliable brownout detection across automotive and industrial temperature ranges |
| VCC Reset Timeout | 1200ms minimum - holds processor in reset long enough for power rail stabilization and clock lock in MCU-based systems |
| Supply Current | 3μA at +1.8V - enables multi-year operation from coin-cell batteries in portable instrumentation |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct interface to CMOS/TTL reset inputs |
| Manual Reset Input | Internal 63kΩ pullup - allows single-pole momentary switch to GND; no external biasing required |
| Operating Voltage | +1.0V to +5.5V - guarantees functional reset assertion even during deep brownout conditions down to 1V supply |
| Reset Propagation Delay | 35μs max for VCC falling edge - provides fast response to supply transients without false triggering on noise |
Pinout & Package
MAX6385XS30D7-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 in portable and automotive electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input; powers internal circuitry and serves as monitored voltage rail for primary reset detection |
| 2 | RESET | Active-high push-pull output; drives high during reset condition and low otherwise; compatible with standard µP reset inputs |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; asserts reset when pulled to GND |
| 4 | GND | Analog and digital ground reference; must be connected to system ground plane for stable comparator operation |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.00V threshold | Eliminates external resistor divider and calibration effort for fixed-voltage monitoring applications |
| 1200ms VCC reset timeout | Meets JEDEC JESD78 requirements for minimum reset pulse width in safety-critical embedded systems |
| Guaranteed operation down to VCC = 1V | Ensures deterministic reset behavior during deep undervoltage events before complete power collapse |
| MR input with 63kΩ internal pullup | Reduces BOM count by one resistor and simplifies PCB layout for field-serviceable reset functionality |
| Negative-going VCC transient immunity | Rejects sub-100ns glitches up to 200mV below threshold - improves reliability in electrically noisy environments |
Applications
| Industrial Controllers | Battery-Powered Instruments |
|---|---|
Use Scenario: Monitoring 3.3V I/O supply in programmable logic controller (PLC) backplane modules subject to load-switching transients. IC Role / Device Role / Timing Role: Primary supervisor IC asserting active-high reset to ARM Cortex-M7 MCU during undervoltage events. Use Value: 3.00V threshold matches nominal 3.3V rail tolerance; 1200ms timeout prevents spurious resets during brief capacitor discharge cycles. | Use Scenario: Power management in handheld gas detector with Li-ion battery and ultra-low-power sensor interface. IC Role / Device Role / Timing Role: Supervisory circuit enabling cold-start initialization and manual recalibration via physical button press. Use Value: 3μA quiescent current extends battery life beyond 5 years; MR input with internal pullup reduces component count and board area. |
| Automotive Body Control Modules | Dual-Voltage Embedded Systems |
Use Scenario: Reset supervision for infotainment SoC powered by 3.0V core and 1.8V I/O supplies in AEC-Q100 qualified vehicle subsystems. IC Role / Device Role / Timing Role: Single-rail supervisor for 3.0V domain; complements secondary supervisor on 1.8V rail. Use Value: –40°C to +125°C operation and ±2.5% threshold accuracy meet automotive ambient requirements without derating. | Use Scenario: Coordinating startup sequencing between 3.3V FPGA configuration and 1.2V core logic in adaptive computing platforms. IC Role / Device Role / Timing Role: Timing-controlled reset generator ensuring FPGA completes configuration before releasing core logic reset. Use Value: 1200ms timeout aligns with typical FPGA bitstream load time; active-high output directly interfaces with FPGA PROG_B pin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS30D4-T | 1120ms VCC reset timeout (vs. 1200ms); identical threshold, package, and MR functionality | Suitable where slightly shorter reset hold time meets system timing margin requirements | Select when 1120ms satisfies MCU boot sequence timing and tighter inventory control is needed |
| TPS3808G30DBVR | 3.0V threshold, 1200ms timeout, but active-low open-drain output and no internal MR pullup | Requires external pullup resistor and separate MR biasing; better suited for level-shifting or wired-OR reset buses | Choose only if open-drain topology is mandatory and board space allows added passive components |
Compared with MAX6385XS30D7-T, the MAX6385XS30D4-T offers a 80ms shorter reset timeout with identical electrical behavior, while the TPS3808G30DBVR requires external biasing and lacks integrated MR pullup-making MAX6385XS30D7-T optimal for compact, low-component-count designs requiring active-high push-pull reset.
Availability
MAX6385XS30D7-T is available at Aetrix Electronics and suitable for industrial controllers, battery-powered instruments, automotive body control modules, and dual-voltage embedded systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS30D7-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 industrial, automotive, and communications applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor supervisory circuits optimized for space-constrained, battery-sensitive, and thermally demanding embedded systems requiring guaranteed reset behavior across wide voltage and temperature ranges.
FAQ
What is the exact reset threshold voltage of the MAX6385XS30D7-T?
The MAX6385XS30D7-T has a factory-set reset threshold of 3.00V, specified with ±2.5% accuracy over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "30" corresponds to nominal 3.00V (min 2.93V, max 3.08V at +25°C). The MAX6385XS30D7-T maintains this precision using a trimmed bandgap reference and low-drift comparator architecture.
Does the MAX6385XS30D7-T support manual reset functionality?
Yes, the MAX6385XS30D7-T includes a dedicated MR (manual reset) input on pin 3, which is internally pulled up to VCC with a 63kΩ resistor. Driving MR low forces an immediate reset assertion, and the device holds reset active for 150ms after MR is released. This feature is explicitly documented in the Pin Description and Applications Information sections, confirming full MR support for the MAX6385XS30D7-T variant.
What package type and dimensions does the MAX6385XS30D7-T use?
The MAX6385XS30D7-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant, lead-free package is confirmed in the Ordering Information table and Package Information section of the datasheet, and is distinct from the 3-pin SC70 used by MAX6381–MAX6383 or the 6-pin μDFN used by LT-suffixed variants.
How does the reset timeout behavior differ between VCC recovery and manual reset release for the MAX6385XS30D7-T?
The MAX6385XS30D7-T applies two distinct timeout periods: a 1200ms minimum VCC reset timeout after VCC rises above 3.00V, and a 150ms minimum manual reset timeout after MR is released. This asymmetry is defined in the Reset Timeout Period table for MAX6390-class devices (which includes MAX6385 per the Selector Guide), and ensures robust power-up sequencing while allowing rapid user-initiated resets without compromising system stability.
Is the MAX6385XS30D7-T qualified for automotive applications?
No, the MAX6385XS30D7-T is not AEC-Q100 qualified. While it operates across –40°C to +125°C, the "/V" suffix denotes automotive qualification (e.g., MAX6385XS30D7/V+T), and the "-T" suffix in MAX6385XS30D7-T indicates tape-and-reel packaging without automotive screening. The datasheet explicitly states AEC-Q100 qualification applies only to /V-trim versions, and MAX6385XS30D7-T is listed in the standard ordering table without /V designation.
MAX6385XS30D7-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:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS30D7-T FAQ
1.How can I place an order for MAX6385XS30D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS30D7-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 MAX6385XS30D7-T reliable?
The price and inventory of MAX6385XS30D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS30D7-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS30D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS30D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS30D7-T?
MAX6385XS30D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS30D7-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 MAX6385XS30D7-T?
For technical support, including MAX6385XS30D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS30D7-T requirements.
6.How does Aetrix verify that MAX6385XS30D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS30D7-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 MAX6385XS30D7-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS30D7-T?
All MAX6385XS30D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS30D7-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 MAX6385XS30D7-T part is unused and in its original packaging.
Return procedure for MAX6385XS30D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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