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Analog Devices Inc./Maxim Integrated MAX6382XR17D3
- Part No.:
- MAX6382XR17D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR17D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,348
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Product details
Overview
The MAX6382XR17D3 from Maxim Integrated is a single-supply, active-high push-pull microprocessor supervisory circuit with factory-set 1.67V reset threshold and 140ms minimum reset timeout. It monitors VCC in low-voltage systems (1.0V–5.5V), consumes only 3µA at +1.8V, and guarantees valid reset output down to VCC = 1V. It is used in portable battery-powered equipment to prevent code execution during brownout.
For engineers reviewing the MAX6382XR17D3 datasheet, MAX6382XR17D3 pinout, MAX6382XR17D3 application, or MAX6382XR17D3 equivalent, key selection considerations include its fixed 1.67V threshold accuracy (±2.5% over –40°C to +125°C), SC70-3 package footprint, active-high push-pull output drive capability, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
This device implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over full industrial temperature range, paired with a temperature-stable RC timer generating a guaranteed-minimum 140ms reset assertion period after VCC recovery. The internal 63kΩ pullup on MR (not present in MAX6382) is omitted - confirming MAX6382 has no manual reset input.
Its active-high push-pull RESET output drives high when VCC falls below 1.67V or remains below threshold, and holds high for ≥140ms after VCC exceeds threshold. Output logic state is guaranteed valid for VCC ≥1.0V, enabling reliable reset assertion even during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.67V (factory-set, ±2.5% over –40°C to +125°C) - ensures deterministic power-on reset at precise low-voltage rail level. |
| Reset Timeout | 140ms minimum - guarantees µP remains held in reset long enough for stable power supply ramp and clock stabilization. |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables. |
| Operating Voltage | 1.0V to 5.5V - supports direct monitoring of core rails (1.2V, 1.8V, 2.5V, 3.3V, 5.0V) without external resistive dividers. |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and provides strong logic-level drive into µP reset input. |
| Temp Range | –40°C to +125°C - qualified for under-hood automotive, industrial control, and extended-temperature embedded applications. |
| VCC Immunity | 35µs max transient duration at 100mV overdrive - rejects short noise spikes without false resets. |
Pinout & Package
MAX6382XR17D3 is housed in a 3-pin SC70-3 package (package code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and lead-free finish. Pin 1 is RESET (active-high push-pull), Pin 2 is VCC, and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | RESET (output) | Active-high push-pull signal asserted when VCC < 1.67V; drives high for ≥140ms after VCC recovery - directly interfaces µP reset input without external components. |
| Pin 2 | VCC (supply) | Main power input and monitored voltage rail; operates from 1.0V to 5.5V; powers internal comparator and timer. |
| Pin 3 | GND (ground) | Analog and digital reference return; must be low-impedance connection to system ground plane to ensure accurate threshold detection. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed threshold | 1.67V with ±2.5% tolerance over –40°C to +125°C - eliminates calibration overhead and reduces BOM count vs. adjustable reset ICs. |
| Ultra-low quiescent current | 3µA at 1.8V - extends battery life in always-on edge nodes and energy-harvesting systems. |
| Guaranteed reset validity | Valid RESET output down to VCC = 1.0V - ensures fail-safe behavior during severe undervoltage events. |
| Negative transient rejection | Immune to VCC glitches ≤35µs at 100mV overdrive - prevents spurious resets in electrically noisy environments (e.g., motor drives, switching supplies). |
| Small-footprint packaging | SC70-3 (2.0mm × 2.1mm) - saves PCB area in space-constrained portable and medical devices. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG patch operating from a CR2032 coin cell with 1.8V LDO output. IC Role / Device Role / Timing Role: Monitors 1.8V supply and asserts active-high RESET to ARM Cortex-M0+ MCU during brownout or cold start. Use Value: 3µA supply current extends battery life beyond 2 years; 140ms timeout ensures reliable firmware initialization before peripheral enable. |
Use Scenario: DIN-rail mounted analog input module powered by 3.3V isolated DC/DC converter in factory automation cabinet. IC Role / Device Role / Timing Role: Supervises 3.3V rail feeding FPGA configuration memory and ADC reference; asserts RESET on undervoltage. Use Value: ±2.5% threshold accuracy over –40°C to +125°C prevents false trips during thermal cycling; SC70-3 footprint simplifies layout in dense I/O stack. |
| Automotive Body Control Units | Smart Home Hub Power Sequencing |
Use Scenario: Low-power door module with LIN transceiver and microcontroller, powered from vehicle battery via 5.0V LDO. IC Role / Device Role / Timing Role: Resets MCU when battery dips below 4.5V during cranking; uses 1.67V variant for auxiliary 1.8V logic rail monitoring. Use Value: Valid output down to VCC = 1.0V ensures deterministic reset even during deep brownout; 35µs transient immunity avoids glitches from alternator ripple. |
Use Scenario: Wi-Fi-connected thermostat with dual-rail power (3.3V MCU, 1.2V RF SoC) and backup supercapacitor. IC Role / Device Role / Timing Role: One MAX6382XR17D3 supervises 1.2V core rail; another monitors 3.3V I/O rail - both provide synchronized active-high reset signals. Use Value: Identical 140ms timeout across rails ensures coordinated power-up sequencing; SC70-3 package allows placement near each rail's LDO output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LTR17D3+ | Same 1.67V threshold and 140ms timeout, but in SOT23-3 package (larger footprint, higher thermal resistance). | Preferred where legacy SOT23 reflow profiles or hand-soldering are required; not suitable for ultra-dense layouts. | Select MAX6326LTR17D3+ only if SC70-3 assembly capability is unavailable; identical electrical specs simplify qualification. |
| TPS3123E17DBVR | 1.67V threshold, 200ms timeout (not 140ms); 2.5µA typical ICC at 1.8V; open-drain output requiring external pullup. | Requires external 100kΩ pullup resistor and accommodates longer timeout - better for systems needing extended hold time post-power-up. | Choose TPS3123E17DBVR only if 200ms timeout is acceptable and board space allows pullup resistor; not drop-in due to output topology and timing mismatch. |
Compared with MAX6382XR17D3, MAX6326LTR17D3+ offers identical functionality in a larger, more manufacturable package, while TPS3123E17DBVR trades push-pull drive and exact 140ms timing for lower current and TI's long-term supply assurance - requiring schematic and layout changes.
Availability
MAX6382XR17D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR17D3 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 was engineered specifically for low-voltage microprocessor supervision in battery-constrained and thermally demanding environments, delivering guaranteed reset timing and threshold accuracy without external components.
FAQ
What is the exact reset threshold voltage of the MAX6382XR17D3?
The MAX6382XR17D3 has a factory-set reset threshold of 1.67V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. This value is laser-trimmed during production and does not require external adjustment. The '17' suffix in MAX6382XR17D3 explicitly denotes the 1.67V threshold per Maxim's ordering guide.
Does the MAX6382XR17D3 include a manual reset input (MR)?
No, the MAX6382XR17D3 does not feature a manual reset input. Per the Selector Guide and Pin Description tables, only MAX6384/MAX6385/MAX6386/MAX6390 include MR functionality. The MAX6382XR17D3 is a dedicated VCC-monitoring device with RESET output only - confirmed by its 3-pin SC70 configuration and absence of MR pin in all package diagrams.
What is the minimum reset timeout period specified for the MAX6382XR17D3?
The MAX6382XR17D3 provides a minimum reset timeout period of 140ms, as indicated by the 'D3' suffix in its part number. This is the guaranteed minimum duration that the active-high RESET output remains asserted after VCC rises above the 1.67V threshold, ensuring sufficient time for microprocessor initialization and clock stabilization.
Can the MAX6382XR17D3 operate reliably at VCC = 1.0V?
Yes, the MAX6382XR17D3 guarantees correct RESET output logic state down to VCC = 1.0V, as stated in the Electrical Characteristics table. This means the active-high RESET signal remains valid and functional even during deep brownout conditions, making it suitable for ultra-low-voltage applications such as energy-harvesting systems and backup power domains.
Which package type is used for the MAX6382XR17D3?
The MAX6382XR17D3 is supplied in a 3-pin SC70-3 package (package code X3-2), with dimensions of 2.0mm × 2.1mm × 0.95mm and gull-wing leads. This compact, lead-free surface-mount package is optimized for high-density PCB layouts in portable and space-constrained electronics, and is distinct from the 4-pin SC70 or 6-pin µDFN variants used by other members of the MAX6381–MAX6390 family.
MAX6382XR17D3 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:
- 1.67V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6382XR17D3 FAQ
1.How can I place an order for MAX6382XR17D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR17D3 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 MAX6382XR17D3 reliable?
The price and inventory of MAX6382XR17D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR17D3 is usually 5 days.
3.What payment methods are accepted for MAX6382XR17D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR17D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR17D3?
MAX6382XR17D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR17D3 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 MAX6382XR17D3?
For technical support, including MAX6382XR17D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR17D3 requirements.
6.How does Aetrix verify that MAX6382XR17D3 is sourced from the original manufacturer or authorized distributors?
All MAX6382XR17D3 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 MAX6382XR17D3 meets industry standards.
7.What is the process for return or replacement of MAX6382XR17D3?
All MAX6382XR17D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR17D3, 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 MAX6382XR17D3 part is unused and in its original packaging.
Return procedure for MAX6382XR17D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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