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Analog Devices Inc./Maxim Integrated MAX6382XR46D3+T
- Part No.:
- MAX6382XR46D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR46D3+T.pdf
- Description:
- IC MPU/RESET CIRC 4.63V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,478
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Product details
Overview
MAX6382XR46D3+T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 4.63V reset threshold, 140ms minimum VCC reset timeout, and guaranteed operation down to VCC = 1V. It monitors single-supply rails in low-power embedded systems and asserts RESET high during brownout or power-up sequencing. Designed for space-constrained applications, it consumes only 3μA at +1.8V and operates across –40°C to +125°C.
For engineers reviewing the MAX6382XR46D3+T datasheet, MAX6382XR46D3+T pinout, MAX6382XR46D3+T application, or MAX6382XR46D3+T equivalent, this page delivers verified specifications, package mapping, real-world use cases, and validated alternative options - all confirmed for the exact part number, including SC70-3 packaging, ±2.5% threshold accuracy over temperature, and active-high push-pull output behavior.
Technical Context
The MAX6382XR46D3+T implements a precision voltage comparator with internal 4.63V reference and a monostable timeout circuit triggered on VCC falling below threshold. Its reset assertion is synchronized to VCC transitions without external components, and the active-high push-pull output drives directly into μP reset inputs without pullup resistors.
It features guaranteed logic-state validity down to VCC = 1V, negative-going transient immunity up to 35µs (at 100mV overdrive), and operates with no manual reset (MR) or auxiliary RESET IN functionality - distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal (±2.5% over –40°C to +125°C); ensures reliable detection of 5V rail brownout before system instability. |
| VCC Reset Timeout | 140ms minimum; holds RESET high long enough to guarantee full μP initialization after power recovery. |
| Supply Current | 3μA at +1.8V; enables multi-year battery life in portable equipment with continuous supervision. |
| Operating Voltage Range | 1.0V to 5.5V; supports valid reset signaling even during deep undervoltage conditions down to 1V. |
| Output Type | Active-high push-pull; eliminates need for external pullup and provides rail-to-rail drive into CMOS/TTL reset inputs. |
| Reset Propagation Delay | 35µs max (VCC falling at 10mV/µs); ensures fast response to rapid supply collapse without false triggering. |
| Package | 3-pin SC70 (X3+2 outline); footprint compatible with space-limited PCB layouts requiring minimal board area. |
Pinout & Package
MAX6382XR46D3+T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with pin 1 = RESET (active-high push-pull), pin 2 = VCC, pin 3 = GND. No NC pins; all terminals are functional.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high during fault condition and deasserts low after timeout - directly interfaces μP reset input without external components. |
| 2 | VCC | Main supply input and monitored voltage rail; powers internal circuitry and serves as primary reset trigger source. |
| 3 | GND | Analog/digital ground reference; must be connected to system ground plane for accurate threshold sensing and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V threshold | Eliminates external resistor networks and calibration effort for 5V-system supervision. |
| ±2.5% threshold accuracy over –40°C to +125°C | Ensures consistent reset behavior across automotive and industrial temperature extremes without derating. |
| 140ms minimum reset timeout | Guarantees sufficient hold time for legacy and modern μPs requiring >100ms reset assertion. |
| 3μA supply current at +1.8V | Reduces quiescent load on backup batteries or energy-harvesting sources in always-on monitoring nodes. |
| Valid reset output down to VCC = 1V | Prevents metastability in μP reset line during deep brownout, improving system robustness. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Monitors 5V supply powering CAN transceivers and sensor interface ASICs in harsh EMI environments. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to halt firmware execution during rail collapse. Use Value: 4.63V threshold aligns precisely with 5V LDO dropout margin; 140ms timeout exceeds CAN controller's required reset hold time. |
Use Scenario: Ensures deterministic restart of microcontroller after ignition cycling or load-dump-induced voltage sag. IC Role / Device Role / Timing Role: Single-supply supervisor with AEC-Q100-compatible performance (via /V variant family). Use Value: ±2.5% threshold stability over –40°C to +125°C prevents spurious resets during cold cranking or under-hood thermal stress. |
| Medical Portable Infusion Pump | Smart Energy Meter MCU Subsystem |
Use Scenario: Supervises main 3.3V rail derived from Li-ion battery via buck converter during battery discharge. IC Role / Device Role / Timing Role: Low-power reset generator maintaining safe shutdown state when VCC drops below safe operating level. Use Value: 3μA ICC at 1.8V extends battery runtime between calibrations; SC70-3 footprint saves space on compact PCB. |
Use Scenario: Provides fail-safe reset to metrology SoC during AC mains interruption or surge events. IC Role / Device Role / Timing Role: Primary VCC monitor for isolated 5V domain powering ADC and communication peripherals. Use Value: Active-high push-pull output drives isolated digital isolator input directly - no level-shifting or pullup needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR46D3+T | Same 4.63V threshold and 140ms timeout, but uses SOT23-3 package (not SC70-3); higher θJA (350°C/W vs. 340.4°C/W). | Compatible for footprint redesign; lacks AEC-Q100 qualification path available in MAX6382 /V variants. | Select when SOT23-3 is preferred for assembly compatibility or thermal budget allows slightly lower power dissipation margin. |
| TPS3124E18DBVR | 4.63V threshold and 200ms timeout (not 140ms); active-high push-pull; 1.8V–5.5V range; 1.6μA ICC at 1.8V. | Lower quiescent current but longer timeout may exceed μP requirements; no /V automotive option. | Choose for ultra-low-power designs where extended reset hold is acceptable and automotive qualification is not required. |
Compared with MAX6382XR46D3+T, MAX6326XR46D3+T offers identical electrical specs in a different package, while TPS3124E18DBVR trades 140ms timing precision for lower ICC - making MAX6382XR46D3+T optimal for applications demanding exact timeout compliance and SC70-3 space efficiency.
Availability
MAX6382XR46D3+T is available at Aetrix Electronics and suitable for industrial control systems, automotive body electronics, and portable medical devices requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.
Supply support for MAX6382XR46D3+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 demanding industrial, automotive, and computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single- and dual-supply microprocessor supervisors optimized for space-constrained, battery-sensitive, and thermally aggressive environments - with MAX6382XR46D3+T targeting 5V-system reset assurance in minimal footprint.
FAQ
What is the exact reset threshold voltage of MAX6382XR46D3+T?
The MAX6382XR46D3+T has a factory-set nominal reset threshold of 4.63V, with tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is confirmed in the Reset Thresholds table of the official datasheet and applies specifically to the "46" suffix in the part number. The MAX6382XR46D3+T maintains this accuracy without external trimming or calibration.
Does MAX6382XR46D3+T include a manual reset (MR) input?
No, MAX6382XR46D3+T does not feature a manual reset input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which lacks MR functionality - unlike MAX6384–MAX6386 and MAX6390. The MAX6382XR46D3+T provides only VCC monitoring and automatic reset assertion; no external MR signal can force reset. This simplifies design for applications requiring only power-fail supervision.
What package type and pin count does MAX6382XR46D3+T use?
MAX6382XR46D3+T is supplied in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with pin 1 = RESET (active-high push-pull), pin 2 = VCC, and pin 3 = GND. This matches the "XR" prefix designation in the ordering guide and is distinct from 4-pin SC70 or 6-pin μDFN variants used by other members of the MAX6381–MAX6390 family.
Is MAX6382XR46D3+T qualified for automotive applications?
The base MAX6382XR46D3+T is not automotive-qualified; however, the /V variant (e.g., MAX6382XR46D3/V+T) is AEC-Q100 qualified and shares identical electrical specifications. The "+T" suffix indicates tape-and-reel packaging and RoHS compliance, but automotive qualification requires explicit /V marking in the part number. Always verify the full orderable part number against the Ordering Information table.
What is the minimum VCC voltage at which MAX6382XR46D3+T guarantees correct RESET output logic state?
MAX6382XR46D3+T guarantees valid RESET output logic state down to VCC = 1.0V. Below this, the output may become indeterminate. This specification ensures reliable reset signaling during deep brownout conditions common in battery-powered systems, and is explicitly tested and guaranteed - not estimated - across temperature per the Electrical Characteristics table.
MAX6382XR46D3+T 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:
- 4.63V
- 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
MAX6382XR46D3+T FAQ
1.How can I place an order for MAX6382XR46D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR46D3+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 MAX6382XR46D3+T reliable?
The price and inventory of MAX6382XR46D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR46D3+T is usually 5 days.
3.What payment methods are accepted for MAX6382XR46D3+T?
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4.How is shipping managed for MAX6382XR46D3+T?
MAX6382XR46D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR46D3+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 MAX6382XR46D3+T?
For technical support, including MAX6382XR46D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR46D3+T requirements.
6.How does Aetrix verify that MAX6382XR46D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR46D3+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 MAX6382XR46D3+T meets industry standards.
7.What is the process for return or replacement of MAX6382XR46D3+T?
All MAX6382XR46D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR46D3+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 MAX6382XR46D3+T part is unused and in its original packaging.
Return procedure for MAX6382XR46D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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