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Analog Devices Inc./Maxim Integrated MAX6385XS24D7-T
- Part No.:
- MAX6385XS24D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS24D7-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,245
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Product details
Overview
MAX6385XS24D7-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.40V ±2.5% reset threshold, and 1200ms minimum VCC reset timeout period. It monitors +1.8V to +5.0V supply rails, consumes only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1V. It is used in portable battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6385XS24D7-T datasheet, MAX6385XS24D7-T pinout, MAX6385XS24D7-T application, or MAX6385XS24D7-T equivalent, key selection criteria include reset threshold accuracy over -40°C to +125°C, manual reset input with internal pullup, SC70-4 package footprint, and compatibility with dual-voltage systems requiring stable reset assertion during supply transients.
Technical Context
This device implements a precision voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C, paired with a monolithic timer that enforces a guaranteed minimum 1200ms reset timeout after VCC recovers above 2.40V. The active-high push-pull output drives directly into μP reset inputs without external pullup.
The integrated debounced manual reset (MR) input features a 63kΩ internal pullup resistor and responds to logic-low pulses ≥1µs width. MR assertion forces reset for 150ms (min) after release, independent of VCC recovery timing - a feature critical for field-serviceable embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±2.5% (factory-trimmed; ensures reliable detection of 2.4V rail brownout) |
| VCC Reset Timeout | 1200ms min (guarantees μP remains held in reset long enough for full power stabilization) |
| Supply Current | 3μA at +1.8V (enables multi-year operation in coin-cell–powered IoT sensors) |
| Operating Voltage Range | +1.0V to +5.5V (supports valid reset assertion even during deep brownout down to 1V) |
| Reset Output Type | Active-high push-pull (drives high without external components; compatible with standard μP reset inputs) |
| Manual Reset Pulse Width | ≥1µs (accepts brief mechanical switch closures without external debounce) |
| Temp Range | -40°C to +125°C (qualified for automotive under-hood and industrial control environments) |
Pinout & Package
MAX6385XS24D7-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. This compact footprint supports high-density PCB layouts in space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input; monitored by internal reset comparator; must be decoupled with 0.1μF capacitor near pin |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion; sinks/source current per spec (VOL ≤0.3V @ 1.2mA) |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; logic-low ≥1µs forces reset |
| 4 | GND | Analog/digital ground reference; must connect to low-impedance system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.40V with ±2.5% tolerance over full temperature range eliminates need for external resistor dividers |
| Guaranteed reset validity down to VCC = 1V | Ensures deterministic μP behavior during deep brownout - no undefined reset states below 1.8V |
| Integrated MR pullup resistor | 63kΩ internal pullup allows direct connection of momentary switch to GND; no external BOM component required |
| Negative-going VCC transient immunity | Rejects sub-10µs glitches at >100mV overdrive - prevents spurious resets in electrically noisy environments |
| AEC-Q100 qualified option | Available in /V automotive grade variant (not this part), enabling use in ADAS and body electronics with traceable qualification |
Applications
| Portable Power Management | Industrial Controller Monitoring |
|---|---|
Use Scenario: Battery-powered handheld meter with Li-ion supply and ultra-low-power MCU. IC Role / Device Role / Timing Role: Monitors main 3.3V rail and asserts active-high RESET until voltage stabilizes post-power-up or after brownout recovery. Use Value: Prevents firmware crash during weak-battery conditions; 3μA quiescent current extends battery life by >2 years in sleep mode. | Use Scenario: PLC I/O module operating in factory ambient (-40°C to +85°C). IC Role / Device Role / Timing Role: Supervises 5V system rail and provides manual reset via front-panel button for field firmware recovery. Use Value: 1200ms timeout ensures complete FPGA configuration before release; MR input accepts noisy panel switch signals without external RC filtering. |
| Dual-Voltage Microcontroller Systems | Automotive Body Control Module |
Use Scenario: SoC-based gateway with separate 1.2V core and 3.3V I/O supplies. IC Role / Device Role / Timing Role: Resets μP only after both rails are stable - coordinated via external OR-ing of multiple MAX6385 outputs. Use Value: Eliminates race conditions between power domains; push-pull output avoids contention when paralleling reset lines. | Use Scenario: Rear-view camera ECU powered from vehicle 12V battery via DC/DC converter. IC Role / Device Role / Timing Role: Detects 3.3V supply droop during cold-cranking (battery dips to 6V); asserts reset until rail recovers and holds for 1200ms. Use Value: Prevents image corruption during engine start; ±2.5% threshold accuracy ensures consistent trip point across temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS24D4-T | Same 2.40V threshold and MR functionality, but 1120ms VCC reset timeout (vs. 1200ms) | Suitable where slightly shorter reset hold time is acceptable for faster boot sequences | Select when system timing budget allows 80ms reduction in reset assertion duration |
| TLV803EB24DBZR | 2.43V threshold, 140ms timeout, SOT-23-3 package, no MR input | Lacks manual reset capability and uses smaller 3-pin footprint; lower cost for basic reset-only functions | Choose when MR is unnecessary and board space is constrained to SOT-23 area |
Compared with MAX6385XS24D7-T, the MAX6385XS24D4-T offers identical functionality with reduced timeout, while TLV803EB24DBZR trades MR support and SC70-4 layout compatibility for lower cost and smaller size - making each suitable for distinct design priorities: timing margin, serviceability, or footprint minimization.
Availability
MAX6385XS24D7-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, dual-voltage microcontroller systems, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS24D7-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, and interface applications, with emphasis on low-power, high-reliability solutions for industrial and automotive markets.
The MAX6381–MAX6390 family delivers single-supply microprocessor supervisory circuits optimized for battery longevity, thermal robustness, and noise immunity in space- and power-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6385XS24D7-T and how accurate is it over temperature?
The MAX6385XS24D7-T has a factory-set reset threshold of 2.40V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This means the actual trip point will fall between 2.34V and 2.46V at any temperature within that range, ensuring consistent brownout detection across harsh environments without calibration.
Does MAX6385XS24D7-T require an external pullup resistor on its RESET output?
No, MAX6385XS24D7-T does not require an external pullup resistor because it features an active-high push-pull RESET output. The internal driver actively sources current when asserting reset (high) and sinks current when deasserting (low), eliminating dependency on external components for proper logic-level generation.
What is the function and electrical behavior of the MR pin on MAX6385XS24D7-T?
The MR pin on MAX6385XS24D7-T is an active-low manual reset input with an internal 63kΩ pullup resistor to VCC. Driving MR low for ≥1µs forces the RESET output high for the full 150ms manual reset timeout period after MR is released. Leaving MR unconnected defaults it to high, disabling manual reset functionality.
Can MAX6385XS24D7-T operate reliably when VCC drops below 1.8V?
Yes, MAX6385XS24D7-T guarantees correct reset output behavior down to VCC = 1.0V. Its internal circuitry remains functional and asserts/deasserts RESET correctly even during deep brownout conditions, supporting applications like energy-harvesting sensors or backup power systems where supply voltage may sag significantly.
What package type and dimensions does MAX6385XS24D7-T use, and is it RoHS-compliant?
MAX6385XS24D7-T uses a 4-pin SC70 package (outline 21-0098) measuring 2.0mm × 2.1mm × 0.95mm, with RoHS-compliant lead-free terminations indicated by the "+T" suffix. This compact, surface-mount package supports automated assembly and high-density PCB layouts in portable electronics.
MAX6385XS24D7-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:
- 2.4V
- 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
MAX6385XS24D7-T FAQ
1.How can I place an order for MAX6385XS24D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS24D7-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 MAX6385XS24D7-T reliable?
The price and inventory of MAX6385XS24D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS24D7-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS24D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS24D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS24D7-T?
MAX6385XS24D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS24D7-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 MAX6385XS24D7-T?
For technical support, including MAX6385XS24D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS24D7-T requirements.
6.How does Aetrix verify that MAX6385XS24D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS24D7-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 MAX6385XS24D7-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS24D7-T?
All MAX6385XS24D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS24D7-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 MAX6385XS24D7-T part is unused and in its original packaging.
Return procedure for MAX6385XS24D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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