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Analog Devices Inc./Maxim Integrated MAX6384XS44D3+T
- Part No.:
- MAX6384XS44D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6384XS44D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
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Product details
Overview
MAX6384XS44D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 4.38V reset threshold (±2.5% over -40°C to +125°C), and 140ms minimum VCC reset timeout. It monitors single supply voltage in battery-powered or embedded systems and guarantees valid reset assertion down to VCC = 1V. Designed for critical μP power-up sequencing in portable instrumentation.
For engineers reviewing the MAX6384XS44D3+T datasheet, MAX6384XS44D3+T pinout, MAX6384XS44D3+T application, or MAX6384XS44D3+T equivalent, key selection criteria include reset threshold accuracy, manual reset input compatibility, SC70-4 package footprint, and guaranteed operation at 1.8V supply with only 3μA quiescent current.
Technical Context
The MAX6384XS44D3+T implements a precision bandgap-based reset comparator with ±2.5% threshold tolerance across -40°C to +125°C and 60ppm/°C tempco. Its internal timer enforces a fixed 140ms minimum reset timeout after VCC rises above 4.38V.
A debounced active-low manual reset input (MR) with 63kΩ internal pullup enables external reset initiation; MR-to-reset delay is 200ns, and MR pulse width rejection is ≥1µs. Reset output remains valid and drives logic-low with VOL ≤ 0.3V at ISINK = 1.2mA (VCC ≥ 2.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal (SUFFIX 44), ±2.5% over full temperature range - ensures reliable brownout detection at 4.3V systems |
| VCC Reset Timeout | 140ms minimum - holds μP in reset long enough for stable 3.3V/5V rail settling |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on monitoring applications |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion during deep brownout down to 1V |
| Reset Output Type | Active-low push-pull - eliminates need for external pullup resistor; sinks 1.2mA at VCC ≥ 2.5V |
| Manual Reset Input | MR with 63kΩ internal pullup - allows momentary switch connection without external components |
| Temp Range | -40°C to +125°C - qualified for industrial and automotive under-hood environments |
Pinout & Package
MAX6384XS44D3+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. Pin 1 is RESET (active-low push-pull), Pin 2 is VCC, Pin 3 is MR (manual reset input), and Pin 4 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output; asserts low when VCC < 4.38V or MR pulled low; remains low for 140ms after recovery |
| 2 | VCC | Main supply input (1.0V–5.5V); powers internal circuitry and serves as monitored voltage source |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; requires <0.3×VCC to assert reset |
| 4 | GND | Ground reference for all internal comparators, timers, and output drivers |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.38V with ±2.5% accuracy over -40°C to +125°C - eliminates external resistor divider calibration |
| Low-power supervision | 3μA ICC at 1.8V - extends battery life in portable medical or sensor nodes |
| Dedicated manual reset input | MR with integrated 63kΩ pullup - enables direct switch connection without BOM additions |
| Guaranteed reset validity | RESET output functional down to VCC = 1V - ensures deterministic behavior during deep undervoltage |
| Negative transient immunity | Rejects VCC glitches <35µs wide at 100mV overdrive - prevents spurious resets in noisy power rails |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose monitor requiring reliable power-on reset before ADC sampling. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM Cortex-M0 until 3.3V rail stabilizes post-battery insertion. Use Value: 140ms timeout ensures complete LDO settling; 3μA quiescent current enables >5-year shelf life with coin cell. | Use Scenario: DIN-rail mounted controller with dual 24V/5V supplies needing coordinated reset sequencing. IC Role / Device Role / Timing Role: Primary VCC monitor for 5V logic rail; MR pin tied to front-panel reset button for field service. Use Value: 4.38V threshold matches 5V rail tolerance; -40°C to +125°C rating supports uncooled cabinet operation. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: BCM microcontroller powered from switched 12V-to-5V converter subject to load dump transients. IC Role / Device Role / Timing Role: Resets MCU during cold-crank brownout; rejects sub-50µs VCC dips per JEDEC transient immunity spec. Use Value: Valid reset down to 1V prevents runaway code execution; AEC-Q100-compatible variant available (not this part). | Use Scenario: Revenue-grade meter with tamper-detection circuitry requiring fail-safe boot initialization. IC Role / Device Role / Timing Role: Ensures secure bootloader activation only after stable 3.3V supply; MR used for firmware update trigger. Use Value: ±2.5% threshold accuracy prevents false resets during line-voltage sags; SC70-4 footprint saves space on metrology PCB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR43D3+T | Same 4-pin SC70 package, 4.30V reset threshold, 140ms timeout, but no MR input | Lacks manual reset capability - unsuitable where field-service reset is required | Select when MR is unnecessary and tighter 4.30V threshold better matches system rail tolerance |
| TPS3808G33DBVR | 3-pin SOT-23, 3.08V threshold, 200ms timeout, 2.5μA ICC, includes watchdog timer | Includes watchdog functionality but lacks MR input and has different threshold/voltage range | Choose when watchdog supervision is needed alongside reset; not drop-in due to pin count and function mismatch |
Compared with MAX6384XS44D3+T, MAX6326XR43D3+T offers identical timing and package but omits MR, while TPS3808G33DBVR adds watchdog capability at the cost of higher pin count, different threshold, and no manual reset - making MAX6384XS44D3+T optimal for MR-requiring 4.3V systems in minimal SC70-4 footprint.
Availability
MAX6384XS44D3+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6384XS44D3+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, communications, and computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers ultra-low-power microprocessor supervisory circuits optimized for battery-operated and harsh-environment embedded systems requiring accurate, glitch-immune reset generation.
FAQ
What is the exact reset threshold voltage of MAX6384XS44D3+T and how stable is it over temperature?
The MAX6384XS44D3+T has a factory-set nominal reset threshold of 4.38V, with ±2.5% tolerance guaranteed over -40°C to +125°C. Its tempco is 60ppm/°C, meaning threshold drift is less than ±12mV across the full temperature range - sufficient for robust 4.3V rail monitoring in industrial controllers.
Does MAX6384XS44D3+T support manual reset, and what are the electrical requirements for the MR pin?
Yes, MAX6384XS44D3+T includes an active-low manual reset input (MR) with a 63kΩ internal pullup to VCC. To assert reset, MR must be driven below 0.3×VCC (e.g., <1.0V at 3.3V supply). The input rejects glitches ≥1µs and exhibits 200ns propagation delay from MR low to RESET assertion.
What package type and dimensions does MAX6384XS44D3+T use, and is it RoHS-compliant?
MAX6384XS44D3+T uses a 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm with 0.65mm lead pitch. The "+T" suffix confirms lead(Pb)-free/RoHS-compliant construction, and land pattern 90-0187 is recommended for PCB layout.
Can MAX6384XS44D3+T operate reliably at 1.8V supply, and what is its typical current draw at that voltage?
Yes, MAX6384XS44D3+T operates across 1.0V to 5.5V and draws only 3μA typical supply current at +1.8V (no load, TA = +25°C). This ultra-low ICC enables multi-year operation in coin-cell-powered IoT endpoints while maintaining full reset functionality down to VCC = 1V.
How does the reset timeout behavior differ between VCC recovery and manual reset release on MAX6384XS44D3+T?
MAX6384XS44D3+T applies the same 140ms minimum timeout period for both conditions: after VCC rises above 4.38V *and* after MR is released from low. The internal timer starts upon recovery in either case, ensuring consistent reset hold time regardless of trigger source - critical for deterministic μP boot sequencing.
MAX6384XS44D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.38V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6384XS44D3+T FAQ
1.How can I place an order for MAX6384XS44D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6384XS44D3+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 MAX6384XS44D3+T reliable?
The price and inventory of MAX6384XS44D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6384XS44D3+T is usually 5 days.
3.What payment methods are accepted for MAX6384XS44D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6384XS44D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6384XS44D3+T?
MAX6384XS44D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6384XS44D3+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 MAX6384XS44D3+T?
For technical support, including MAX6384XS44D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6384XS44D3+T requirements.
6.How does Aetrix verify that MAX6384XS44D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6384XS44D3+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 MAX6384XS44D3+T meets industry standards.
7.What is the process for return or replacement of MAX6384XS44D3+T?
All MAX6384XS44D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6384XS44D3+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 MAX6384XS44D3+T part is unused and in its original packaging.
Return procedure for MAX6384XS44D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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