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Analog Devices Inc./Maxim Integrated MAX6383XR46D2-T
- Part No.:
- MAX6383XR46D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR46D2-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,651
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Product details
Overview
The MAX6383XR46D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 4.63V reset threshold (±2.5% over -40°C to +125°C), 20ms minimum reset timeout, and guaranteed operation down to VCC = 1.0V. It monitors single-supply rails in battery-powered systems and portable electronics where precise voltage supervision and ultra-low quiescent current (3μA at 1.8V) are critical.
For engineers reviewing the MAX6383XR46D2-T datasheet, MAX6383XR46D2-T pinout, MAX6383XR46D2-T application, or MAX6383XR46D2-T equivalent, this device serves as a precision VCC supervisor for embedded microcontrollers requiring deterministic reset assertion during brownout, power-up, and transient events - with validated open-drain drive capability, negative-going transient immunity, and SC70-3 package compatibility.
Technical Context
This device implements a precision bandgap-based voltage comparator monitoring VCC against a fixed internal reference, with hysteresis and temperature-compensated threshold accuracy (±2.5% over full industrial range). The reset assertion is synchronized to VCC crossing the 4.63V threshold, followed by a digitally timed 20ms minimum timeout period before deassertion.
The open-drain RESET output requires an external pullup resistor and guarantees valid logic state down to VCC = 1.0V; it sinks up to 3.2mA at VCC ≥ 4.5V with VOL ≤ 0.4V. No manual reset (MR) or auxiliary RESET IN inputs are present - confirming its role as a dedicated single-rail, no-frills supervisor.
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 undervoltage before system instability. |
| Reset Timeout | 20ms minimum - provides sufficient hold time for microcontroller initialization after power stabilization. |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year battery life in always-on portable instrumentation. |
| Operating Voltage | 1.0V to 5.5V - supports valid reset signaling even during deep brownout conditions. |
| Output Type | Open-drain active-low - allows wired-OR configuration and level translation across mixed-voltage systems. |
| Reset Output Drive | VOL ≤ 0.4V at ISINK = 3.2mA (VCC ≥ 4.5V) - ensures robust low-state margin into typical MCU reset inputs. |
| Temp Range | -40°C to +125°C - qualified for under-hood automotive and industrial control environments. |
Pinout & Package
MAX6383XR46D2-T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, with RoHS-compliant lead-free finish (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset signal output; requires external pullup; asserts when VCC < 4.63V and remains asserted for ≥20ms after VCC recovery. |
| 2 | VCC | Primary supply input and monitored voltage rail; powers internal circuitry and defines reset detection point. |
| 3 | GND | Analog and digital ground reference; must be connected directly to system ground plane for stable threshold accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±2.5% tolerance over full temperature range - eliminates external resistor networks and calibration effort. |
| Ultra-low quiescent current | 3μA at 1.8V - reduces standby power in battery-critical applications such as medical wearables and IoT sensors. |
| Valid reset output down to 1.0V VCC | Guaranteed logic state integrity during deep brownout - prevents spurious release before core logic stabilizes. |
| Negative-going transient immunity | Rejects sub-10µs VCC glitches below threshold - avoids false resets in electrically noisy environments like motor drives. |
| SC70-3 footprint | 2.0mm × 2.1mm package - enables high-density PCB layouts in space-constrained handheld devices. |
Applications
| Power Monitoring in Portable Equipment | Microcontroller Supervision in Industrial Controllers |
|---|---|
Use Scenario: Monitors 5V system rail in handheld test meters powered by two AA batteries with boost converter. IC Role / Device Role / Timing Role: Single-rail voltage supervisor asserting active-low reset to ARM Cortex-M0 MCU during battery sag or cold-start. Use Value: 4.63V threshold precisely targets 5V rail margin; 20ms timeout exceeds MCU POR requirement; 3μA ICC extends battery life beyond 5 years in sleep mode. | Use Scenario: Ensures deterministic restart of PLC I/O module after AC line dip or ESD event on 5V backplane. IC Role / Device Role / Timing Role: Dedicated VCC monitor providing fail-safe reset pulse to FPGA configuration controller. Use Value: ±2.5% threshold accuracy over -40°C to +125°C prevents false trips in uncontrolled enclosures; open-drain output interfaces cleanly with 3.3V FPGA reset input via 10kΩ pullup. |
| Automotive Body Control Module (BCM) | Dual-Voltage Embedded Systems |
Use Scenario: Supervises 5V supply in AEC-Q100-compliant BCM node operating near engine compartment heat. IC Role / Device Role / Timing Role: Automotive-grade reset generator meeting ISO 16750-2 transient immunity requirements. Use Value: Valid operation to +125°C and negative transient rejection ensure reliability during load dump; SC70-3 package fits tight routing constraints in multi-layer BCM PCB. | Use Scenario: Coordinates power sequencing between 5V analog front-end and 3.3V digital subsystem in data acquisition unit. IC Role / Device Role / Timing Role: Primary VCC supervisor enabling safe boot order via open-drain wired-OR with secondary supervisor. Use Value: Open-drain output allows direct connection to shared reset bus; 4.63V threshold avoids premature assertion during 5V rail settling. |
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 | Same 4.63V threshold and 20ms timeout, but push-pull active-low output; higher ICC (15μA typ at 3.6V) | Requires no external pullup; less suitable for wired-OR or level-shifted reset buses | Select when board layout prohibits external pullup or when driving capacitive loads >100pF directly. |
| TPS3808G33DBVR | 3.3V threshold (not 4.63V); 20ms timeout; open-drain output; ICC = 1.1μA at 3.3V | Designed for 3.3V systems; lacks automotive temp range (–40°C to +125°C) and AEC-Q100 qualification | Choose only for cost-sensitive 3.3V consumer applications where extended temperature and automotive compliance are not required. |
Compared with MAX809TRD2+T and TPS3808G33DBVR, the MAX6383XR46D2-T uniquely delivers 4.63V supervision with open-drain output, ultra-low 3μA ICC at 1.8V, and full automotive temperature support - making it the optimal choice for space-constrained, battery-aware 5V systems demanding long-term reliability.
Availability
MAX6383XR46D2-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial controllers, and automotive body control modules requiring stable component supply, long-lifecycle availability, and RoHS-compliant packaging.
Supply support for MAX6383XR46D2-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, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family delivers low-power, single/dual-voltage microprocessor supervisors optimized for battery longevity, small footprint, and high-accuracy reset generation in harsh thermal environments.
FAQ
What is the exact reset threshold voltage of the MAX6383XR46D2-T?
The MAX6383XR46D2-T has a factory-set nominal reset threshold of 4.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet (suffix "46"), and applies specifically to the MAX6383 variant with open-drain output - not to push-pull or dual-monitor versions in the same family.
Does the MAX6383XR46D2-T include a manual reset input (MR)?
No, the MAX6383XR46D2-T does not feature a manual reset input. Per the Selector Guide and Pin Configurations, MR is only present on MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6383XR46D2-T is a minimal-feature, single-rail supervisor with only RESET, VCC, and GND pins - confirmed by its 3-pin SC70 package and absence of MR in all functional descriptions.
What is the minimum reset timeout period for the MAX6383XR46D2-T?
MAX6383XR46D2-T has a minimum reset timeout period of 20ms, indicated by the "D2" suffix in its part number. This is verified in the Reset Timeout Delay table, where D2 corresponds to 20ms (min), and is consistent across all MAX6383 variants regardless of threshold suffix. The timeout begins when VCC rises above 4.63V and ends with RESET deassertion.
Can the MAX6383XR46D2-T operate with supply voltages below 1.8V?
Yes, the MAX6383XR46D2-T operates from VCC = 1.0V to 5.5V and guarantees valid reset output behavior down to 1.0V. Its supply current drops to 3μA at 1.8V and remains functional at lower voltages, though ICC increases slightly below 1.8V. This capability is explicitly stated in Absolute Maximum Ratings and Electrical Characteristics tables, and is essential for brownout detection in Li-ion battery discharge profiles.
Is the MAX6383XR46D2-T pin-compatible with the MAX809 series?
Yes, the MAX6383XR46D2-T is pin-compatible with MAX809/MAX810 in the 3-pin SC70 package, as confirmed in the Features section ("Pin Compatible with MAX809/MAX810/..."). Both share identical pinout: Pin 1 = RESET, Pin 2 = VCC, Pin 3 = GND. However, MAX809 variants use push-pull outputs, so external pullup design must be re-evaluated if substituting MAX6383XR46D2-T in existing layouts.
MAX6383XR46D2-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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR46D2-T FAQ
1.How can I place an order for MAX6383XR46D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D2-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 MAX6383XR46D2-T reliable?
The price and inventory of MAX6383XR46D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D2-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR46D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR46D2-T transactions.
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4.How is shipping managed for MAX6383XR46D2-T?
MAX6383XR46D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR46D2-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 MAX6383XR46D2-T?
For technical support, including MAX6383XR46D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D2-T requirements.
6.How does Aetrix verify that MAX6383XR46D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D2-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 MAX6383XR46D2-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D2-T?
All MAX6383XR46D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D2-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 MAX6383XR46D2-T part is unused and in its original packaging.
Return procedure for MAX6383XR46D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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