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Analog Devices Inc./Maxim Integrated MAX6385XS34D6-T
- Part No.:
- MAX6385XS34D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS34D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,401
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Product details
Overview
MAX6385XS34D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 3.40V reset threshold (±2.5% over –40°C to +125°C), and 560ms minimum VCC reset timeout. It monitors single supply voltage in battery-powered or embedded systems and guarantees valid reset state down to VCC = 1V. Designed for critical μP power-up sequencing in portable instrumentation and industrial controllers.
For engineers reviewing the MAX6385XS34D6-T datasheet, MAX6385XS34D6-T pinout, MAX6385XS34D6-T application, or MAX6385XS34D6-T equivalent, key selection considerations include its 4-pin SC70 package, manual reset input with internal pullup, ±2.5% threshold accuracy across temperature, and compatibility with dual-voltage monitoring systems requiring guaranteed reset assertion during brownout.
Technical Context
The MAX6385XS34D6-T implements a precision bandgap-based voltage comparator with 60ppm/°C tempco to detect VCC falling below 3.40V, triggering an active-high reset that remains asserted for ≥560ms after VCC recovers. Its internal timer ensures deterministic reset duration independent of supply ramp rate.
It features a debounced manual reset input (MR) with 63kΩ internal pullup, supporting TTL/CMOS-compatible logic levels and momentary switch interfacing without external components. Reset output remains valid down to VCC = 1V, enabling robust operation during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.40V nominal, ±2.5% over –40°C to +125°C - ensures reliable detection of 3.3V rail undervoltage with margin for noise and drift |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for μP initialization and peripheral stabilization after power recovery |
| Supply Current | 3μA at +1.8V, 6μA at +3.6V - enables multi-year battery life in always-on portable equipment |
| Reset Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct connection to μP RESET pin |
| Operating Voltage Range | 1.0V to 5.5V - allows operation during deep brownout and compatibility with 1.2V–5V logic families |
| MR Input Pullup | 63kΩ internal - permits direct switch-to-GND interface without external components; supports noise immunity with optional 0.1μF capacitor |
| Reset Assertion Delay | 35μs max for VCC falling at 10mV/µs - rejects short transients while responding promptly to sustained undervoltage |
Pinout & Package
MAX6385XS34D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.3mm × 1.7mm × 0.6mm, suitable for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage source; powers internal circuitry and feeds reset comparator |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion, low otherwise; sinks/source capability up to 3.2mA/800µA |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; asserts reset when pulled ≤0.3×VCC |
| 4 | GND | Ground reference for all internal circuits and reset comparator; must be connected to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 3.40V with ±2.5% tolerance over full temperature range - eliminates external resistor network and calibration effort |
| Guaranteed reset validity | Operates correctly down to VCC = 1V - ensures deterministic reset behavior even during severe brownout before shutdown |
| Manual reset with internal pullup | 63kΩ MR pullup - enables simple momentary switch interface without discrete resistors or debounce circuitry |
| Negative-going transient immunity | Rejects VCC glitches ≤35μs wide at 100mV overdrive - prevents spurious resets in electrically noisy environments |
| Low quiescent current | 3μA at 1.8V - extends battery life in always-on IoT sensors and portable medical devices |
Applications
| Industrial PLC Controller | Portable ECG Monitor |
|---|---|
|
Use Scenario: Power-up sequencing and brownout protection for ARM Cortex-M4-based controller managing I/O modules and communication interfaces. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to halt CPU execution until 3.3V rail stabilizes above 3.40V for ≥560ms. Use Value: Prevents firmware corruption during unstable power conditions; eliminates need for external timing capacitor or resistor divider. |
Use Scenario: Battery-powered handheld diagnostic device requiring ultra-low standby current and reliable wake-from-reset behavior. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and provides manual reset via tactile button; guarantees reset assertion down to VCC = 1V. Use Value: Enables >5-year battery life with 3μA quiescent current; internal MR pullup reduces BOM count by one resistor. |
| Smart Energy Meter | Dual-Voltage Industrial Sensor Node |
|
Use Scenario: Tamper-resistant meter with isolated power domains where main MCU and metrology ASIC require synchronized reset. IC Role / Device Role / Timing Role: Primary reset supervisor for 3.3V domain; MR input tied to tamper-detection circuit to force reset on enclosure breach. Use Value: 63kΩ MR pullup simplifies tamper interface; ±2.5% threshold accuracy ensures compliance with IEC 62053-21 voltage tolerance requirements. |
Use Scenario: Sensor node powered by both Li-ion battery (3.7V) and USB (5V), requiring independent monitoring of core and I/O rails. IC Role / Device Role / Timing Role: Single-supply supervisor for 3.3V I/O rail; used alongside MAX6387/MAX6388 for auxiliary 1.8V core rail monitoring. Use Value: Pin-compatible family enables scalable design; 4-pin SC70 footprint minimizes layout area across variants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS34D3-T | 140ms VCC reset timeout vs. 560ms - shorter assertion period | Suitable for faster-booting MCUs with minimal peripheral initialization time | Select when system boot sequence completes within 140ms and lower latency reset deassertion is required |
| MAX6385LT34D6-T | 6-pin μDFN package (vs. 4-pin SC70); identical electrical specs | Offers thermal performance advantage (θJA = 477°C/W vs. 322.6°C/W) in high-power-density layouts | Choose for thermally constrained designs needing better power dissipation or existing 6-pin footprint reuse |
Compared with MAX6385XS34D3-T, the MAX6385XS34D6-T provides longer reset hold time for complex peripherals; compared with MAX6385LT34D6-T, it offers smaller footprint and lower assembly cost in space-limited applications, though with higher thermal resistance.
Availability
MAX6385XS34D6-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, smart energy meters, and dual-voltage sensor nodes requiring stable component supply with automotive-grade reliability (AEC-Q100 qualified versions available).
Supply support for MAX6385XS34D6-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, emphasizing low power, high reliability, and small form factor.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-powered and embedded systems requiring guaranteed reset behavior across wide temperature ranges and ultra-low quiescent current.
FAQ
What is the exact reset threshold voltage of MAX6385XS34D6-T?
The MAX6385XS34D6-T has a factory-set nominal reset threshold of 3.40V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is laser-trimmed during production and does not require external calibration. The "34" suffix in the part number explicitly denotes the 3.40V threshold per Maxim's ordering guide.
Does MAX6385XS34D6-T support manual reset functionality?
Yes, MAX6385XS34D6-T includes a dedicated MR (manual reset) input pin with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an active-high reset assertion for the full 560ms timeout period, then holds reset for the specified duration after MR is released. No external components are needed for basic switch interfacing.
What package type and dimensions does MAX6385XS34D6-T use?
MAX6385XS34D6-T uses a 4-pin SC70 package (outline 21-0098), measuring 1.3mm × 1.7mm × 0.6mm with 0.65mm lead pitch. This RoHS-compliant, lead-free package is optimized for high-density PCB layouts and reflow soldering. Land pattern 90-0187 is recommended for reliable assembly.
How does MAX6385XS34D6-T behave during brownout conditions?
MAX6385XS34D6-T guarantees valid reset output down to VCC = 1V, ensuring the active-high RESET signal remains asserted and logically correct even during deep brownout. Its comparator architecture and internal biasing maintain functionality far below typical logic thresholds, preventing spurious release before safe power recovery.
Is MAX6385XS34D6-T compatible with other parts in the MAX6381–MAX6390 family?
Yes, MAX6385XS34D6-T is pin-compatible with other 4-pin SC70 variants in the MAX6381–MAX6390 family, including MAX6384 and MAX6386. It shares identical pinout, electrical characteristics, and thermal specifications, enabling drop-in replacement when only reset threshold or timeout differs - provided the target application requires active-high push-pull output.
MAX6385XS34D6-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:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS34D6-T FAQ
1.How can I place an order for MAX6385XS34D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS34D6-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 MAX6385XS34D6-T reliable?
The price and inventory of MAX6385XS34D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS34D6-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS34D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS34D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS34D6-T?
MAX6385XS34D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS34D6-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 MAX6385XS34D6-T?
For technical support, including MAX6385XS34D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS34D6-T requirements.
6.How does Aetrix verify that MAX6385XS34D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS34D6-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 MAX6385XS34D6-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS34D6-T?
All MAX6385XS34D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS34D6-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 MAX6385XS34D6-T part is unused and in its original packaging.
Return procedure for MAX6385XS34D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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