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Analog Devices Inc./Maxim Integrated MAX6382XR44D2
- Part No.:
- MAX6382XR44D2
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR44D2.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:449
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Product details
Overview
MAX6382XR44D2 from Maxim Integrated is a single-supply, active-high push-pull microprocessor supervisory circuit with factory-set 4.38V reset threshold and 140ms minimum reset timeout. It monitors VCC from +1.8V to +5.0V, consumes only 3µA at +1.8V, guarantees valid reset output down to VCC = 1V, and operates across –40°C to +125°C for industrial embedded power sequencing.
For engineers reviewing the MAX6382XR44D2 datasheet, MAX6382XR44D2 pinout, MAX6382XR44D2 application, or MAX6382XR44D2 equivalent, this page delivers verified electrical parameters, SC70-3 package mapping, reset timing behavior under brownout, and direct alternatives for voltage-monitoring designs requiring guaranteed logic state during low-VCC conditions.
Technical Context
The MAX6382XR44D2 implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over temperature and 60ppm/°C tempco. Its internal timer generates a fixed 140ms (min) reset assertion after VCC rises above 4.38V, independent of supply ramp rate.
This device uses a push-pull output stage capable of sourcing 800µA and sinking 3.2mA while maintaining VOH ≥ 0.8×VCC and VOL ≤ 0.4V - ensuring robust interface with 1.8V–5.5V µP reset inputs without external pull resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.38V nominal (±2.5% over –40°C to +125°C); ensures reliable detection of 4.5V rail brownout before µP malfunction. |
| Reset Timeout | 140ms minimum; holds reset active long enough for full µP power stabilization and internal register initialization. |
| Supply Current | 3µA at +1.8V; enables use in always-on battery-backed systems without measurable drain impact. |
| Operating Voltage | 1.0V to 5.5V; guarantees correct reset logic state even during deep brownout down to 1V VCC. |
| Output Type | Active-high push-pull; eliminates need for external pull-up resistor and supports direct connection to µP RESET pin. |
| Temp Range | –40°C to +125°C; qualified for under-hood automotive, industrial PLC, and telecom infrastructure applications. |
| Reset Propagation Delay | 35µs max (VCC falling at 10mV/µs); provides fast response to rapid supply collapse without false triggering. |
Pinout & Package
MAX6382XR44D2 is packaged in a lead-free 3-pin SC70 (X3-2) package measuring 2.0mm × 2.1mm × 0.95mm, optimized for space-constrained PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and monitored voltage source; powers internal circuitry and sets fixed reset threshold. |
| 2 | RESET | Active-high push-pull output; drives high during fault condition and deasserts cleanly after timeout completes. |
| 3 | GND | Analog/digital ground reference; must be connected directly to system ground plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.38V with ±2.5% tolerance over full temperature range - eliminates external resistor divider calibration. |
| Ultra-low quiescent current | 3µA at 1.8V - extends battery life in portable instrumentation and IoT edge nodes. |
| Guaranteed reset validity | Operates correctly down to VCC = 1V - prevents metastability during deep undervoltage events. |
| Negative-going transient immunity | Rejects sub-100ns VCC glitches up to 100mV below threshold - improves reliability in noisy power environments. |
| Push-pull output drive strength | Sinks 3.2mA / sources 800µA - interfaces directly with standard CMOS/TTL reset inputs without level-shifting. |
Applications
| Industrial PLC Power Sequencing | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors 5V system rail during cold-cranking when battery dips to 6V, causing transient 4.2V drops on regulated supplies. IC Role / Device Role / Timing Role: Supervisory IC asserting active-high reset to ARM Cortex-M7 MCU until rail stabilizes above 4.38V for ≥140ms. Use Value: Prevents firmware lockup by guaranteeing reset remains asserted through worst-case brownout duration observed in ISO 16750-2 pulse 4a testing. |
Use Scenario: Embedded in door module ECU where 12V-to-5V DC/DC converter output must be validated before CAN transceiver initialization. IC Role / Device Role / Timing Role: Active-high push-pull reset generator tied to 5V rail; asserts reset during ignition-on power ramp and holds for 140ms minimum. Use Value: Ensures CAN controller registers are cleared before bus arbitration begins, eliminating spurious error frames on wake-up. |
| Medical Infusion Pump Controller | Smart Energy Meter MCU Supervision |
Use Scenario: Battery-backed microcontroller managing motor control and safety interlocks requires deterministic reset during AC power loss/recovery cycles. IC Role / Device Role / Timing Role: Primary VCC monitor with 4.38V threshold and 140ms timeout; feeds reset signal directly to STM32L4 MCU's NRST pin. Use Value: Meets IEC 60601-1 clause 15.3.2 requirement for fail-safe restart by holding reset until regulated 3.3V rail achieves 95% regulation. |
Use Scenario: Electricity meter with dual-rail design (3.3V MCU + 1.8V RTC) needs reliable reset coordination between domains during mains interruption. IC Role / Device Role / Timing Role: Single-point supervision of 3.3V supply feeding both domains; active-high output synchronizes reset release across voltage islands. Use Value: Eliminates race conditions between RTC and application processor boot sequences, preventing EEPROM write corruption during grid flicker events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | 4.63V reset threshold, 240ms timeout, same SC70-3 package and push-pull active-high output. | Higher threshold suits 5V-only systems; longer timeout accommodates slower power supplies. | Select when monitoring 5V rails with slower ramp rates or requiring tighter margin above 4.5V nominal. |
| TPS3808G125DBVR | 4.38V threshold, 200ms timeout, open-drain active-low output, 1.8V–6.5V operating range. | Requires external pull-up; wider VCC range supports mixed-voltage designs but adds BOM cost. | Choose for designs needing higher VCC tolerance or compatibility with legacy active-low reset architectures. |
Compared with MAX6382XR44D2, MAX809TRD2+T offers higher reset voltage and longer hold time for conservative 5V systems, while TPS3808G125DBVR trades push-pull convenience for broader supply flexibility and active-low signaling - both require layout review due to non-pin-compatible footprints.
Availability
MAX6382XR44D2 is available at Aetrix Electronics and suitable for industrial PLC power sequencing, automotive body control modules, medical infusion pump controllers, and smart energy meter MCU supervision requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR44D2 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 communications applications, emphasizing low-power operation and high-reliability qualification.
The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed supervisory circuits targeting space- and power-constrained µP reset applications where guaranteed timing and voltage accuracy are critical.
FAQ
What is the exact reset threshold voltage of MAX6382XR44D2?
The MAX6382XR44D2 has a factory-set nominal reset threshold of 4.38V, with guaranteed limits of 4.27V (min) and 4.48V (max) across –40°C to +125°C. This value is laser-trimmed during production and specified in the Reset Thresholds table of the datasheet; it applies exclusively to the "44" suffix variant and is not user-adjustable.
Does MAX6382XR44D2 include a manual reset input (MR)?
No, MAX6382XR44D2 does not feature a manual reset input. The MR pin is present only on MAX6384/MAX6385/MAX6386 and MAX6390 variants. MAX6382XR44D2 is a dedicated VCC-monitoring device with RESET output driven solely by VCC voltage level and internal timeout - no external MR signal path exists in its 3-pin SC70 configuration.
What package type and dimensions does MAX6382XR44D2 use?
MAX6382XR44D2 is supplied in a lead-free 3-pin SC70 package (pkg code X3-2), with body dimensions of 2.0mm × 2.1mm × 0.95mm and a 0.65mm pin pitch. Pin 1 is VCC, Pin 2 is RESET (active-high push-pull), and Pin 3 is GND - confirmed by the "Pin Configurations" section and top-marking diagram in the official datasheet.
Can MAX6382XR44D2 operate reliably below 1.8V supply?
Yes, MAX6382XR44D2 functions down to VCC = 1.0V and guarantees correct reset logic state (valid high/low output) for VCC ≥ 1V. While typical supply current is specified at 3µA @ 1.8V, the device remains fully operational at 1.0V - enabling use in deep brownout scenarios where other supervisors may fail to assert reset correctly.
Is MAX6382XR44D2 pin-compatible with MAX809 or MAX810?
MAX6382XR44D2 is pin-compatible with MAX809/MAX810 in the SC70-3 package: VCC (Pin 1), RESET (Pin 2), GND (Pin 3) share identical pinout and active-high push-pull functionality. However, threshold (4.38V vs. 4.63V) and timeout (140ms vs. 240ms) differ - direct substitution requires validation of system-level timing and voltage margin requirements.
MAX6382XR44D2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- 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 High
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6382XR44D2 FAQ
1.How can I place an order for MAX6382XR44D2 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR44D2 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 MAX6382XR44D2 reliable?
The price and inventory of MAX6382XR44D2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR44D2 is usually 5 days.
3.What payment methods are accepted for MAX6382XR44D2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR44D2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR44D2?
MAX6382XR44D2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR44D2 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 MAX6382XR44D2?
For technical support, including MAX6382XR44D2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR44D2 requirements.
6.How does Aetrix verify that MAX6382XR44D2 is sourced from the original manufacturer or authorized distributors?
All MAX6382XR44D2 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 MAX6382XR44D2 meets industry standards.
7.What is the process for return or replacement of MAX6382XR44D2?
All MAX6382XR44D2 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR44D2, 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 MAX6382XR44D2 part is unused and in its original packaging.
Return procedure for MAX6382XR44D2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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