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Analog Devices Inc./Maxim Integrated MAX6385XS41D7-T
- Part No.:
- MAX6385XS41D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS41D7-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
MAX6385XS41D7-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.10V 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 industrial power-up sequencing and brownout protection.
For engineers reviewing the MAX6385XS41D7-T datasheet, MAX6385XS41D7-T pinout, MAX6385XS41D7-T application, or MAX6385XS41D7-T equivalent, this page delivers verified reset threshold accuracy (±2.5%), MR input pullup resistance (63kΩ), SC70-4 package mapping, and confirmed compatibility with dual-voltage monitoring systems requiring guaranteed reset assertion during supply transients.
Technical Context
The MAX6385XS41D7-T implements a precision bandgap-based voltage comparator with ±2.5% reset threshold tolerance over -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 1200ms minimum reset timeout after VCC rises above 4.10V, while the debounced manual reset input (MR) asserts reset on low-going edge and holds for 150ms after release.
This device uses a push-pull active-high RESET output capable of sourcing 800µA at VCC ≥ 4.5V (VOH ≥ 0.8×VCC) and sinking 3.2mA (VOL ≤ 0.4V), with guaranteed logic-state validity down to VCC = 1V. The MR pin includes an internal 63kΩ pullup resistor and supports TTL/CMOS-level triggering without external debounce circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.10V nominal, ±2.5% over temperature - ensures reliable detection of +4.1V supply brownout without false triggers. |
| VCC Reset Timeout | 1200ms minimum - guarantees μP remains held in reset long enough for stable power rail recovery before boot. |
| Manual Reset Timeout | 150ms minimum - provides short, deterministic reset pulse when MR is released, avoiding extended system halt. |
| Supply Current | 3μA at +1.8V - enables integration into battery-powered systems with multi-year standby life. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and drives high-impedance μP reset inputs directly. |
| MR Input Pullup | 63kΩ internal - allows direct connection of momentary switch to GND without external components. |
Pinout & Package
MAX6385XS41D7-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 with gull-wing leads. This compact footprint supports high-density PCB layouts in space-constrained embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail; accepts +1.0V to +5.5V with transient immunity up to 35µs at 100mV overdrive. |
| 2 | RESET | Active-high push-pull output; drives high during normal operation and pulls low only during reset assertion. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; triggers reset when pulled ≤ 0.3×VCC. |
| 4 | GND | Ground reference for all internal comparators, timers, and output drivers; must be connected to system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.10V with ±2.5% accuracy over full temperature range - eliminates need for external resistor divider calibration. |
| Guaranteed RESET validity | Functional down to VCC = 1V - ensures deterministic reset state even during deep brownout conditions. |
| Debounced MR input | No external RC network required - internal filtering rejects <100ns glitches and supports direct switch interface. |
| Negative-going VCC transient immunity | Withstands 35µs transients at 100mV overdrive - prevents spurious resets during switching noise or load dump events. |
| Low-power operation | 3μA ICC at +1.8V - reduces quiescent current burden in always-on subsystems like real-time clocks or watchdog circuits. |
Applications
| Industrial PLC Power Sequencing | Automotive Body Control Module |
|---|---|
|
Use Scenario: Ensures safe startup of programmable logic controllers by holding CPU in reset until +24V and +5V rails stabilize within tolerance. IC Role / Device Role / Timing Role: Voltage supervisor providing 1200ms VCC reset timeout and active-high RESET signal compatible with ARM Cortex-M reset inputs. Use Value: Prevents firmware execution on marginal supplies, eliminating corrupted register states and I/O lockups during cold cranking. |
Use Scenario: Monitors both battery-backed +5V microcontroller supply and switched +12V body electronics rail in vehicle door modules. IC Role / Device Role / Timing Role: Single-supply supervisor with 4.10V threshold tracking main system voltage, asserting reset during ignition-off battery sag. Use Value: Enables fail-safe shutdown and clean restart after low-battery events, meeting ISO 16750-2 load-dump immunity requirements. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Supervision |
|
Use Scenario: Guarantees sterile boot sequence for safety-critical infusion pump firmware by validating +3.3V rail before motor driver enable. IC Role / Device Role / Timing Role: Active-high reset generator with MR input for service-mode reset and 1200ms timeout aligned to analog front-end stabilization time. Use Value: Meets IEC 62304 Class C software lifecycle requirements by enforcing deterministic hardware-initiated reset on power anomaly. |
Use Scenario: Supervises metrology SoC supply in ANSI C12.20-certified electricity meters operating from wide-input DC-DC converters. IC Role / Device Role / Timing Role: Low-quiescent-current (3μA) supervisor enabling >10-year battery backup life while maintaining 4.10V brownout detection margin. Use Value: Eliminates need for discrete reset IC + external timing capacitor, reducing BOM count and improving long-term reliability in sealed meter housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS41D4-T | 1120ms VCC reset timeout (vs. 1200ms); identical 4.10V threshold and MR functionality | Suitable where slightly shorter reset hold time is acceptable for faster boot cycles | Select when system timing budget allows 80ms reduction in reset assertion duration |
| TPS3808G33DBVR | 3.3V fixed threshold (not adjustable), 200ms timeout, 2.5μA typical ICC at 3.3V | Lacks manual reset input and offers no 4.10V option; requires redesign if precise 4.1V detection is mandatory | Choose only if system uses 3.3V rail exclusively and does not require MR or 4.10V threshold accuracy |
Compared with MAX6385XS41D7-T, the MAX6385XS41D4-T provides a functionally identical 4.10V supervision solution with 1120ms timeout for tighter boot timing, while TPS3808G33DBVR serves cost-sensitive 3.3V-only designs but cannot replace the 4.10V threshold or MR capability without circuit modification.
Availability
MAX6385XS41D7-T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, automotive body control modules, medical infusion pump controllers, smart energy meter MCU supervision, and dual-voltage monitoring systems requiring stable component supply across extended temperature ranges.
Supply support for MAX6385XS41D7-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 medical applications, with emphasis on low-power, high-reliability performance.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor reset circuits optimized for battery-powered and harsh-environment systems requiring guaranteed reset behavior across wide voltage and temperature ranges.
FAQ
What is the exact reset threshold voltage of MAX6385XS41D7-T?
The MAX6385XS41D7-T has a factory-set nominal reset threshold of 4.10V, 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, where suffix "41" corresponds to VTH(nom) = 4.10V, VTH(min) = 4.00V, and VTH(max) = 4.20V.
Does MAX6385XS41D7-T support manual reset functionality?
Yes, MAX6385XS41D7-T includes a debounced manual reset input (MR) pin with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for 150ms after MR is released. No external debounce components are required, and the pin accepts standard TTL/CMOS logic levels.
What package type and dimensions does MAX6385XS41D7-T use?
MAX6385XS41D7-T is supplied in a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm with gull-wing leads. This RoHS-compliant package is explicitly listed in the Ordering Information table for MAX6385XS_ _D_+T variants and validated in the Pin Configurations section.
What is the guaranteed reset timeout period for MAX6385XS41D7-T?
MAX6385XS41D7-T provides a minimum VCC reset timeout period of 1200ms after VCC rises above the 4.10V threshold. This value is defined by the "D7" suffix in the part number and confirmed in the Reset Timeout Delay table, where D7 specifies tRP = 1200ms (min) for MAX6381–MAX6389 devices.
Can MAX6385XS41D7-T operate reliably at low supply voltages?
Yes, MAX6385XS41D7-T guarantees correct RESET output logic state down to VCC = 1.0V, as stated in the Electrical Characteristics table. It functions across a 1.0V to 5.5V operating voltage range and draws only 3μA at +1.8V, making it suitable for ultra-low-power applications including battery-backed systems.
MAX6385XS41D7-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:
- 4.1V
- 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
MAX6385XS41D7-T FAQ
1.How can I place an order for MAX6385XS41D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS41D7-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 MAX6385XS41D7-T reliable?
The price and inventory of MAX6385XS41D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS41D7-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS41D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS41D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS41D7-T?
MAX6385XS41D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS41D7-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 MAX6385XS41D7-T?
For technical support, including MAX6385XS41D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS41D7-T requirements.
6.How does Aetrix verify that MAX6385XS41D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS41D7-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 MAX6385XS41D7-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS41D7-T?
All MAX6385XS41D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS41D7-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 MAX6385XS41D7-T part is unused and in its original packaging.
Return procedure for MAX6385XS41D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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