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Analog Devices Inc./Maxim Integrated MAX6382XR25D2+T
- Part No.:
- MAX6382XR25D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR25D2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,426
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Product details
Overview
MAX6382XR25D2+T from Maxim Integrated is a factory-trimmed, active-high push-pull μP supervisory circuit with 2.50V reset threshold and 20ms 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 is housed in a RoHS-compliant 3-pin SC70 package. It is used in portable battery-powered equipment for reliable power-on reset assertion.
For engineers reviewing the MAX6382XR25D2+T datasheet, MAX6382XR25D2+T pinout, MAX6382XR25D2+T application, or MAX6382XR25D2+T equivalent, key selection criteria include reset threshold accuracy (±2.5% over −40°C to +125°C), low quiescent current, guaranteed reset state at low VCC, push-pull active-high output drive capability, and compatibility with space-constrained SC70 layouts.
Technical Context
The MAX6382XR25D2+T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 20ms minimum reset timeout after VCC rises above 2.50V, with no manual reset input or auxiliary voltage monitor.
This variant belongs to the MAX6382 subfamily-active-high push-pull output only, 3-pin SC70 package, no MR or RESET IN pins-and is functionally distinct from MAX6384–MAX6390 (4-pin with MR) and MAX6387–MAX6389 (4-pin with RESET IN). Its reset assertion logic is strictly VCC-monitored with no secondary inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.50V (factory-trimmed, ±2.5% over −40°C to +125°C) |
| Reset Timeout | 20ms minimum (guaranteed deassertion delay after VCC exceeds threshold) |
| Supply Current | 3μA at +1.8V (enables multi-year battery life in always-on monitoring) |
| Operating Voltage | +1.0V to +5.5V (ensures functional reset assertion even during deep brownout) |
| Output Type | Active-high push-pull (drives high during reset; no external pullup required) |
| Reset Output Validity | Guaranteed down to VCC = 1V (prevents undefined logic states during power collapse) |
| Package | 3-pin SC70 (1.25mm × 0.85mm footprint; compatible with high-density PCB assembly) |
Pinout & Package
MAX6382XR25D2+T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208) with 0.65mm pitch and RoHS-compliant lead-free finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high when VCC < 2.50V; remains high for ≥20ms after VCC > 2.50V |
| 2 | VCC | Main supply input and monitored voltage rail; operates from +1.0V to +5.5V |
| 3 | GND | Analog/digital ground reference; must be low-impedance connection for accurate threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 2.50V threshold | Eliminates external resistor divider; reduces BOM count and layout area in compact designs |
| ±2.5% threshold accuracy over temperature | Ensures deterministic reset behavior across automotive and industrial ambient ranges without calibration |
| 20ms minimum reset timeout | Meets μP power-up initialization timing requirements for ARM Cortex-M and similar embedded processors |
| 3μA supply current at +1.8V | Enables integration into ultra-low-power IoT sensor nodes with coin-cell or energy-harvesting supplies |
| Push-pull active-high output | Directly interfaces with μP reset inputs requiring active-high assertion; no pullup resistor needed |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Wearable ECG patch operating from CR2032 coin cell with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Monitors VCC during cold-start and brownout; asserts active-high RESET for ≥20ms to initialize microcontroller and ADC subsystems. Use Value: Prevents firmware lockup during battery voltage sag; 3μA quiescent current extends operational life beyond 2 years. |
Use Scenario: Environmental monitoring node deployed in remote locations, powered by solar-charged Li-ion. IC Role / Device Role / Timing Role: Detects VCC drop below 2.50V during low-light conditions; triggers full system reset to recover corrupted flash writes. Use Value: 20ms timeout ensures complete processor core and peripheral reset; ±2.5% threshold stability avoids false resets across −25°C to +60°C field temperatures. |
| Industrial Control Edge Nodes | Smart Home Sensor Hubs |
Use Scenario: DIN-rail mounted PLC I/O module with dual 3.3V/5V rails and transient-prone 24VDC input. IC Role / Device Role / Timing Role: Supervises 3.3V logic rail; asserts RESET on negative-going transients exceeding comparator overdrive margin. Use Value: Immunity to ≤10µs VCC glitches at 2.50V threshold prevents spurious reboots during relay switching noise. |
Use Scenario: Zigbee-enabled occupancy sensor using low-voltage CMOS SoC with strict power-on sequencing. IC Role / Device Role / Timing Role: Provides clean, monotonic active-high reset signal synchronized to 3.3V rail stabilization. Use Value: Push-pull output eliminates weak-pull dependencies; 3-pin SC70 footprint saves space on 4-layer RF-sensitive PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar μP reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6382XR25D3+T | Same 2.50V threshold but 140ms reset timeout (vs. 20ms) | Suitable where longer reset hold time is required for complex boot sequences | Select when μP or FPGA requires extended initialization window before releasing reset |
| MAX809TRD2+T | 2.63V threshold, 240ms timeout, SOT23-3 package, ±2% accuracy | Higher threshold and longer timeout; not pin-compatible due to different pin 1 assignment | Choose for legacy SOT23-3 board reuse where 2.63V threshold matches system VDD tolerance |
Compared with MAX6382XR25D2+T, the XR25D3+T extends reset duration for demanding boot loaders, while MAX809TRD2+T offers tighter threshold accuracy and higher voltage trip point but requires PCB redesign due to non-identical pinout and package outline.
Availability
MAX6382XR25D2+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, industrial control edge nodes, and smart home sensor hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR25D2+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 power, sensing, and interface applications, with emphasis on low-power, high-reliability solutions for industrial and automotive markets.
The MAX6381–MAX6390 family delivers single-supply μP supervisory circuits optimized for space-constrained, battery-sensitive systems requiring guaranteed reset assertion under brownout, startup, and transient conditions.
FAQ
What is the exact reset threshold voltage of MAX6382XR25D2+T?
The MAX6382XR25D2+T has a factory-trimmed reset threshold of 2.50V, specified with ±2.5% accuracy over the full operating temperature range of −40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "25" corresponds to nominal 2.50V. The MAX6382XR25D2+T does not support user-adjustable thresholds or auxiliary voltage monitoring.
Does MAX6382XR25D2+T include a manual reset input (MR)?
No, the MAX6382XR25D2+T does not include a manual reset input. It belongs to the MAX6382 subfamily, which features only VCC monitoring and an active-high push-pull RESET output. Manual reset functionality is exclusive to MAX6384/MAX6385/MAX6386/MAX6390 variants, which use 4-pin SC70 or 6-pin μDFN packages - the MAX6382XR25D2+T is strictly a 3-pin SC70 device with no MR pin.
What is the guaranteed minimum reset timeout period for MAX6382XR25D2+T?
The MAX6382XR25D2+T provides a guaranteed minimum reset timeout period of 20ms after VCC rises above the 2.50V threshold. This value is defined by the "D2" suffix in the part number and is validated across −40°C to +125°C. The timeout begins once VCC exceeds the threshold and ensures sufficient hold time for microprocessor initialization before release.
Can MAX6382XR25D2+T operate reliably at VCC = 1.2V?
Yes, the MAX6382XR25D2+T guarantees correct reset output logic state down to VCC = 1.0V, per Absolute Maximum Ratings and Electrical Characteristics. At VCC = 1.2V, it continues to assert active-high RESET when VCC falls below 2.50V and maintains valid output drive - critical for fail-safe operation in deep brownout scenarios common in energy-harvesting and primary battery systems.
Is MAX6382XR25D2+T pin-compatible with MAX809 series devices?
No, MAX6382XR25D2+T is not pin-compatible with MAX809 series devices. Although both are 3-pin supervisory circuits, MAX6382XR25D2+T uses SC70 packaging with pin 1 = RESET, pin 2 = VCC, pin 3 = GND, whereas MAX809 variants use SOT23-3 with pin 1 = GND, pin 2 = VCC, pin 3 = RESET. Physical layout and signal routing differ, requiring PCB redesign for substitution.
MAX6382XR25D2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.5V
- 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
MAX6382XR25D2+T FAQ
1.How can I place an order for MAX6382XR25D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR25D2+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 MAX6382XR25D2+T reliable?
The price and inventory of MAX6382XR25D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR25D2+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR25D2+T?
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4.How is shipping managed for MAX6382XR25D2+T?
MAX6382XR25D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR25D2+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 MAX6382XR25D2+T?
For technical support, including MAX6382XR25D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR25D2+T requirements.
6.How does Aetrix verify that MAX6382XR25D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR25D2+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 MAX6382XR25D2+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR25D2+T?
All MAX6382XR25D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR25D2+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 MAX6382XR25D2+T part is unused and in its original packaging.
Return procedure for MAX6382XR25D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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