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Analog Devices Inc./Maxim Integrated MAX6385XS34D5-T
- Part No.:
- MAX6385XS34D5-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS34D5-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
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Product details
Overview
MAX6385XS34D5-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 3.40V reset threshold, 280ms minimum VCC reset timeout, and manual reset input. It monitors single-supply rails from +1.8V to +5.0V at 3μA supply current (at +1.8V), guarantees valid reset output down to VCC = 1V, and operates across –40°C to +125°C for use in industrial controllers and battery-powered instrumentation.
For engineers reviewing the MAX6385XS34D5-T datasheet, MAX6385XS34D5-T pinout, MAX6385XS34D5-T application, or MAX6385XS34D5-T equivalent, this page delivers verified electrical specifications, SC70-4 package layout, reset timing behavior under voltage transients, and validated alternatives for power-rail monitoring in embedded systems requiring guaranteed brownout protection.
Technical Context
The MAX6385XS34D5-T implements a precision bandgap-based voltage comparator with ±2.5% reset threshold accuracy over –40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 280ms minimum reset assertion period after VCC recovers above 3.40V.
It features an active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V (VOH ≥ 0.8×VCC) and sinking 3.2mA (VOL ≤ 0.4V), plus a debounced active-low MR input with 63kΩ internal pullup resistor-ensuring reliable manual reset initiation without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.40V (factory-set, ±2.5% over –40°C to +125°C) |
| VCC Reset Timeout | 280ms minimum - ensures μP remains held in reset long enough for stable power-up sequencing |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion even during deep brownout conditions |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external pullup when MR is unused |
| RESET Output Type | Active-high push-pull - drives high without external components; compatible with standard μP reset inputs |
| Temperature Range | –40°C to +125°C - qualified for industrial and automotive under-hood applications |
Pinout & Package
MAX6385XS34D5-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 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 rail; powers internal circuitry and reset comparator |
| 2 | RESET | Active-high push-pull output; asserts high during reset condition and deasserts low after timeout |
| 3 | MR | Active-low manual reset input; forces reset when pulled low; internally pulled up to VCC |
| 4 | GND | Ground reference for all internal comparators, timers, and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.40V with ±2.5% tolerance over full temperature range - eliminates external resistor network calibration |
| Guaranteed reset validity | RESET output state defined down to VCC = 1.0V - prevents undefined logic states during deep undervoltage |
| Negative-going transient immunity | Rejects VCC glitches < 35µs wide at 100mV overdrive - avoids spurious resets in noisy power environments |
| Low-power supervision | 3μA ICC at +1.8V - extends battery life in portable medical and sensor nodes |
| Debounced manual reset | MR input rejects <100ns noise pulses and requires >1µs low pulse - eliminates switch bounce without RC filter |
Applications
| Industrial PLC I/O Modules | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Monitoring 3.3V I/O supply in programmable logic controller backplanes subject to load-switching transients. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M7 microcontroller during undervoltage events. Use Value: 280ms timeout ensures firmware initialization completes only after 3.3V rail stabilizes post-power-cycle; ±2.5% threshold accuracy prevents false resets at temperature extremes. |
Use Scenario: Power management in environmental sensor nodes powered by CR2032 coin cells with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Single-supply supervisor enabling reliable cold-start and brownout recovery for ultra-low-power MSP430 microcontrollers. Use Value: 3μA quiescent current extends operational lifetime beyond 5 years; 3.40V threshold matches typical Li-ion cutoff voltage for graceful shutdown. |
| Automotive Body Control Modules | Medical Point-of-Care Devices |
|
Use Scenario: Monitoring 5.0V system rail in vehicle door module exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: AEC-Q100 qualified reset generator interfacing with Infineon AURIX TC3xx MCU via active-high reset pin. Use Value: Valid operation to –40°C/+125°C and 35µs glitch rejection prevent reset corruption during engine cranking transients. |
Use Scenario: Ensuring deterministic boot sequence in handheld ultrasound units with dual-voltage (1.8V core / 3.3V analog) supplies. IC Role / Device Role / Timing Role: Primary supervisor for main processor; MR pin connected to emergency stop button for hardware-initiated safe shutdown. Use Value: Internal 63kΩ MR pullup eliminates BOM cost; active-high push-pull output directly drives reset input without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR34D5+T | Same 3.40V threshold and 280ms timeout, but active-low open-drain RESET output requiring external pullup | Suitable where system-level reset bus is shared among multiple devices with wired-OR topology | Select when interoperability with legacy open-drain reset networks is required; not drop-in due to output polarity and drive architecture |
| TPS3124E18DBVR | 3.08V threshold (not 3.40V), 200ms timeout, 1.8V min operating voltage, 1.5μA ICC at 1.8V | Better suited for ultra-low-voltage 1.8V/2.5V systems where tighter threshold granularity is needed | Choose for lower supply current and finer threshold selection; verify 3.08V threshold compatibility with target μP's reset spec |
Compared with MAX6385XS34D5-T, MAX6326XR34D5+T requires board-level redesign for pullup and logic inversion, while TPS3124E18DBVR offers lower power but mismatched threshold - both serve distinct design constraints rather than direct replacements.
Availability
MAX6385XS34D5-T is available at Aetrix Electronics and suitable for industrial controllers, battery-powered instrumentation, automotive body electronics, and medical point-of-care devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6385XS34D5-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 computing applications, with emphasis on low-power, high-reliability performance.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor reset circuits optimized for robust power-rail monitoring in space-constrained, thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of the MAX6385XS34D5-T?
The MAX6385XS34D5-T has a factory-set reset threshold of 3.40V, with guaranteed accuracy 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 corresponds to suffix "34" in the part number. The MAX6385XS34D5-T uses a precision bandgap reference to maintain stability against process and temperature variation.
Does the MAX6385XS34D5-T support manual reset functionality?
Yes, the MAX6385XS34D5-T includes a debounced active-low manual reset input (MR) with a 63kΩ internal pullup resistor to VCC. Driving MR low forces an immediate reset assertion, which remains active for the full 280ms timeout after MR is released. No external components are required, and the input rejects noise pulses shorter than 100ns - making it ideal for pushbutton interfaces in industrial and medical equipment.
What package type and dimensions does the MAX6385XS34D5-T use?
The MAX6385XS34D5-T is supplied in a lead-free, RoHS-compliant 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with 0.65mm pin pitch. Its thermal resistance is θJA = 322.6°C/W on a multilayer PCB. This compact footprint supports high-density layouts in portable and automotive electronics where board space is constrained.
Can the MAX6385XS34D5-T operate reliably below 1.8V?
Yes, the MAX6385XS34D5-T functions down to VCC = 1.0V and guarantees valid RESET output logic states across that entire range. While its typical supply current is specified as 3μA at +1.8V, operation at 1.0V–1.8V is fully supported per Absolute Maximum Ratings and Electrical Characteristics tables. However, reset timeout and threshold accuracy are only guaranteed above 1.0V - not at 0V.
Is the MAX6385XS34D5-T qualified for automotive applications?
No, the MAX6385XS34D5-T is not automotive-qualified. It carries the "+T" suffix indicating RoHS compliance but lacks the "/V" automotive qualification marker. For AEC-Q100 Grade 2 (–40°C to +105°C) or Grade 1 (–40°C to +125°C) applications, select variants such as MAX6385XS34D5/V+T - which undergo additional stress testing and screening per automotive reliability standards.
MAX6385XS34D5-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:
- 3.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS34D5-T FAQ
1.How can I place an order for MAX6385XS34D5-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS34D5-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 MAX6385XS34D5-T reliable?
The price and inventory of MAX6385XS34D5-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS34D5-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS34D5-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS34D5-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS34D5-T?
MAX6385XS34D5-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS34D5-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 MAX6385XS34D5-T?
For technical support, including MAX6385XS34D5-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS34D5-T requirements.
6.How does Aetrix verify that MAX6385XS34D5-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS34D5-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 MAX6385XS34D5-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS34D5-T?
All MAX6385XS34D5-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS34D5-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 MAX6385XS34D5-T part is unused and in its original packaging.
Return procedure for MAX6385XS34D5-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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