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Analog Devices Inc./Maxim Integrated MAX6385XS36D7-T
- Part No.:
- MAX6385XS36D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS36D7-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,962
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Product details
Overview
MAX6385XS36D7-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.60V reset threshold, 1200ms VCC reset timeout, and manual reset input. It monitors single-supply rails from +1.8V to +5.0V, consumes only 3μA at +1.8V, and guarantees valid reset output down to VCC = 1V. Used in portable battery-powered equipment for reliable power-up sequencing and brownout protection.
For engineers reviewing the MAX6385XS36D7-T datasheet, MAX6385XS36D7-T pinout, MAX6385XS36D7-T application, or MAX6385XS36D7-T equivalent, this page delivers verified electrical specs, SC70-4 package layout, reset timing behavior, manual reset interface details, and validated alternative parts for industrial embedded and automotive-grade designs.
Technical Context
The MAX6385XS36D7-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 1200ms reset assertion after VCC recovery and a separate 150ms manual reset timeout.
It features an internal 63kΩ pullup on the MR pin, supports TTL/CMOS-compatible manual reset triggering, and ensures reset output validity even during low-VCC conditions (≥1V). The active-high push-pull RESET output drives high during fault conditions and deasserts cleanly upon timeout completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.60V (factory-set, ±2.5% over −40°C to +125°C) - sets precise power-fail detection point for 3.3V systems |
| VCC Reset Timeout | 1200ms minimum - ensures μP remains held in reset long enough for full power stabilization |
| Manual Reset Timeout | 150ms minimum - provides short, deterministic reset pulse when MR is released |
| 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 down to 1V, critical for ultra-low-power wake-up sequences |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup resistor; sinks 80μA at VCC ≥ 1.0V |
| MR Input Pullup | 63kΩ internal resistor - allows direct connection of momentary switch to GND without external components |
Pinout & Package
MAX6385XS36D7-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 devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and serves as reference for reset threshold detection |
| 2 | RESET | Active-high push-pull output; driven high during reset assertion, low otherwise; compatible with standard μP reset inputs |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ; asserts reset when pulled ≤0.3×VCC |
| 4 | GND | Analog and digital ground reference; must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.60V with ±2.5% tolerance across −40°C to +125°C - eliminates external resistor divider and calibration effort |
| Dual timeout architecture | Independent 1200ms VCC timeout and 150ms MR timeout - prevents spurious resets during button press and ensures robust power recovery |
| Low-voltage operation guarantee | Valid RESET output state maintained down to VCC = 1.0V - enables reliable reset signaling in deep-sleep or battery-depleted states |
| Negative-going transient immunity | Immune to VCC glitches <150µs wide at 100mV overdrive - suppresses false resets caused by switching noise or ESD coupling |
| SC70-4 package compatibility | Pb-free, 2.0mm × 2.1mm footprint - matches industry-standard land pattern for drop-in replacement in existing designs |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Wearable ECG sensor operating from CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output; asserts active-high RESET during brownout to halt MCU execution until stable power returns. Use Value: 3μA quiescent current extends battery life beyond 3 years; 1200ms timeout prevents premature MCU wake-up before LDO regulation settles. |
Use Scenario: Environmental monitoring node logging temperature/humidity every 10 minutes using ultra-low-power MCU. IC Role / Device Role / Timing Role: Provides power-on reset and manual reset via tactile switch; uses MR pin for field firmware recovery. Use Value: 63kΩ internal MR pullup eliminates BOM cost and layout area; 150ms MR timeout enables clean, repeatable recovery without software debounce. |
| Automotive Body Control Modules | Industrial PLC I/O Subsystems |
|
Use Scenario: 12V-to-3.3V powered door module subjected to load-dump transients and cold-crank voltage sags. IC Role / Device Role / Timing Role: Supervises 3.3V microcontroller supply; detects sags below 3.60V and holds RESET for full 1200ms after recovery. Use Value: AEC-Q100 qualified variant available; ±2.5% threshold accuracy ensures consistent reset behavior across automotive temperature range. |
Use Scenario: DIN-rail mounted controller with dual 5V/3.3V rails where main CPU requires coordinated reset sequencing. IC Role / Device Role / Timing Role: Primary supervisor for 3.3V core rail; RESET output feeds into FPGA-based reset arbiter managing multiple subsystems. Use Value: Active-high push-pull output interfaces directly with FPGA I/O banks without level-shifting; 1V minimum VCC operation supports graceful shutdown during brownout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS36D4-T | Same 3.60V threshold and active-high push-pull output, but 1120ms VCC reset timeout (vs. 1200ms) | Suitable where slightly shorter reset hold time is acceptable; identical MR timeout (140ms vs. 150ms) | Select for legacy designs already validated with D4 timing or where tighter timing margin is required |
| TPS3808G33DBVR | 3.3V threshold (not 3.6V), 2% accuracy, 200ms default timeout (adjustable via capacitor), 1.5μA IQ | Requires external timing capacitor and lacks factory-trimmed threshold; lower IQ but less precise trip point | Choose when ultra-low power dominates over threshold precision, or when adjustable timeout is preferred over fixed timing |
Compared with MAX6385XS36D7-T, the MAX6385XS36D4-T offers identical functionality with a 80ms shorter VCC timeout-ideal for faster-recovery systems-while the TPS3808G33DBVR trades factory-trimmed accuracy and fixed timing for programmability and lower quiescent current, requiring additional passive components and design validation.
Availability
MAX6385XS36D7-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, automotive body control modules, and industrial PLC I/O subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS36D7-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, with emphasis on reliability, low power, and small form factor.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-powered and safety-critical embedded systems requiring guaranteed reset behavior across wide temperature and voltage ranges.
FAQ
What is the exact reset threshold voltage of MAX6385XS36D7-T?
The MAX6385XS36D7-T has a factory-set reset threshold of 3.60V, 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 and applies specifically to the "36" suffix in the part number. The MAX6385XS36D7-T is designed for reliable supervision of 3.3V systems where precise brownout detection is required.
Does MAX6385XS36D7-T support manual reset functionality?
Yes, the MAX6385XS36D7-T includes a debounced manual reset input (MR) with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an active-high reset assertion, which remains active for 150ms after MR is released. This feature is explicitly documented for MAX6385 in the Features and Pin Description sections, and the MAX6385XS36D7-T implements it without external components.
What package type and dimensions does MAX6385XS36D7-T use?
The MAX6385XS36D7-T is supplied in a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with a standard land pattern (90-0187). This RoHS-compliant, lead-free package is confirmed in the Ordering Information table and Pin Configurations section of the datasheet, and is distinct from the 3-pin SC70 or 6-pin μDFN variants used by other members of the MAX6381–MAX6390 family.
How does the reset timeout behavior differ between VCC recovery and manual reset on MAX6385XS36D7-T?
The MAX6385XS36D7-T implements two independent timeout periods: a 1200ms minimum reset assertion after VCC rises above 3.60V, and a 150ms minimum assertion after MR is released. This dual-timing architecture is specified in the Electrical Characteristics table under "Reset Timeout Period" for MAX6385 and distinguishes the MAX6385XS36D7-T from variants like MAX6384 (same thresholds but different timing suffixes) or MAX6390 (which uses 1120ms/140ms or 1200ms/150ms pairs).
Is MAX6385XS36D7-T qualified for automotive applications?
The base MAX6385XS36D7-T is rated for −40°C to +125°C operation and meets AEC-Q100 requirements when ordered with the "/V" automotive qualification suffix (e.g., MAX6385XS36D7/V+T). The standard MAX6385XS36D7-T is not automatically automotive-qualified; the /V variant must be explicitly selected per the Ordering Information table, and its qualification status is tied to that specific part number configuration.
MAX6385XS36D7-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:
- 3.6V
- 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
MAX6385XS36D7-T FAQ
1.How can I place an order for MAX6385XS36D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS36D7-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 MAX6385XS36D7-T reliable?
The price and inventory of MAX6385XS36D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS36D7-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS36D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS36D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS36D7-T?
MAX6385XS36D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS36D7-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 MAX6385XS36D7-T?
For technical support, including MAX6385XS36D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS36D7-T requirements.
6.How does Aetrix verify that MAX6385XS36D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS36D7-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 MAX6385XS36D7-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS36D7-T?
All MAX6385XS36D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS36D7-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 MAX6385XS36D7-T part is unused and in its original packaging.
Return procedure for MAX6385XS36D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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