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Analog Devices Inc./Maxim Integrated MAX6383XR46D3-T
- Part No.:
- MAX6383XR46D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR46D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,961
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Product details
Overview
MAX6383XR46D3-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), and 140ms minimum reset timeout period. It monitors VCC from +1.8V to +5.0V while consuming only 3μA at +1.8V, and guarantees valid reset state down to VCC = 1V. Used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383XR46D3-T datasheet, MAX6383XR46D3-T pinout, MAX6383XR46D3-T application, or MAX6383XR46D3-T equivalent, key selection criteria include its 4.63V reset threshold accuracy, 140ms timeout, open-drain output requiring external pullup, SC70-3 package footprint, and compatibility with dual-voltage systems where auxiliary monitoring is not required.
Technical Context
The MAX6383XR46D3-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 guaranteed-minimum 140ms reset assertion after VCC rises above 4.63V, independent of supply ramp rate.
This device belongs to the MAX6381–MAX6390 family of single-supply supervisors with no manual reset input (MR) or auxiliary RESET IN pin - confirmed by ordering guide and pin configuration tables. It uses BiCMOS process and supports operation down to VCC = 1V with open-drain RESET output capable of sinking 3.2mA at VCC ≥ 4.5V.
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. |
| Reset Timeout | 140ms minimum; provides sufficient hold time for microprocessor initialization and memory stabilization. |
| Supply Current | 3μA at +1.8V; enables multi-year battery life in always-on portable instrumentation. |
| Output Type | Open-drain active-low RESET; requires external pullup resistor, enabling wired-OR configuration with other reset sources. |
| VCC Range | +1.0V to +5.5V; supports valid reset assertion even during deep brownout conditions down to 1V supply. |
| Operating Temp | −40°C to +125°C; qualified for industrial and automotive under-hood applications without derating. |
| Package | 3-pin SC70 (X3+2 outline); 1.25mm × 0.85mm footprint ideal for space-constrained PCBs. |
Pinout & Package
MAX6383XR46D3-T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with pins arranged in standard top-view orientation: Pin 1 = RESET (open-drain active-low), Pin 2 = VCC, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low reset output; must be pulled up externally to VCC or another logic rail; asserts low during VCC undervoltage or brownout. |
| 2 | VCC | Main supply input and monitored voltage source; powers internal circuitry and sets reset threshold reference point. |
| 3 | GND | Analog and digital ground reference; must be connected to system ground plane with low-inductance path for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±2.5% tolerance over full temperature range eliminates need for external resistor divider calibration. |
| Ultra-low quiescent current | 3μA at 1.8V enables use in energy-harvesting and coin-cell-powered devices without compromising battery life. |
| Valid reset down to VCC = 1V | Ensures deterministic processor reset even during severe brownout events before complete power collapse. |
| Negative-going transient immunity | Rejects short-duration VCC glitches (e.g., <1µs at 100mV overdrive), reducing false resets in noisy power environments. |
| Small-footprint SC70 package | 1.25mm × 0.85mm body size saves >60% board area vs. SOT-23, critical for wearable and IoT sensor nodes. |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Wearable ECG patch operating on CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Monitors 3.3V LDO output and asserts open-drain RESET to MCU upon voltage sag below 4.63V during RF burst. Use Value: Prevents firmware corruption during battery depletion; 140ms timeout ensures full ADC settling and flash write completion before restart. |
Use Scenario: Environmental monitoring node logging temperature/humidity every 5 minutes using AA batteries. IC Role / Device Role / Timing Role: Supervises main 3.0V supply rail and holds MCU in reset until stable post-wake-up from deep sleep. Use Value: 3μA supply current extends operational lifetime beyond 5 years; open-drain output interfaces directly with MCU's shared reset bus. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
Use Scenario: DIN-rail mounted analog input module exposed to 40–85°C ambient with 24V-to-3.3V conversion. IC Role / Device Role / Timing Role: Detects 3.3V rail collapse due to load dump or regulator fault; asserts RESET to ARM Cortex-M4 core. Use Value: −40°C to +125°C rating ensures reliability across extended industrial temperature range; 4.63V threshold matches 5V logic interface margin. |
Use Scenario: Door module controlling window lift, mirror fold, and interior lighting powered from vehicle 12V battery. IC Role / Device Role / Timing Role: Monitors 5.0V system rail derived from buck converter; triggers reset during cold-crank (6V dip) or load dump (40V spike recovery). Use Value: Immunity to negative-going transients prevents spurious resets during engine start; AEC-Q100-compliant variants available (e.g., MAX6383XR46D3/V+T). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | Same 4.63V threshold and 140ms timeout, but push-pull active-low output (no external pullup required); higher ICC (12μA at 3.6V). | Suitable where board layout prohibits external pullup or where faster rise time is needed on RESET line. | Select MAX809TRD3+T if push-pull drive simplifies routing and power budget allows ~4× higher quiescent current. |
| TPS3808G33DBVR | 3.3V fixed threshold (not 4.63V); 200ms timeout; 1.5μA ICC at 3.3V; SOT-23-5 package with manual reset input. | Requires redesign of voltage monitoring strategy; adds MR functionality not present in MAX6383XR46D3-T. | Choose TPS3808G33DBVR only if system operates at 3.3V rail and manual reset capability is mandatory. |
Compared with MAX809TRD3+T, MAX6383XR46D3-T offers lower power and smaller footprint but requires external pullup; versus TPS3808G33DBVR, it provides precise 4.63V detection for 5V systems but lacks manual reset and uses different package geometry.
Availability
MAX6383XR46D3-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, 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 MAX6383XR46D3-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 high-performance analog and mixed-signal ICs for industrial, automotive, communications, and computing markets, with emphasis on power efficiency and rugged operation.
The MAX6381–MAX6390 product line delivers ultra-low-power, precision voltage supervisors targeting space- and energy-constrained embedded systems where deterministic reset behavior under brownout is critical.
FAQ
What is the exact reset threshold voltage of MAX6383XR46D3-T and how stable is it over temperature?
The MAX6383XR46D3-T has a factory-set nominal reset threshold of 4.63V, with guaranteed tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. Its tempco is specified at 60ppm/°C, meaning threshold drift is less than ±12mV across a 100°C span - sufficient for robust 5V system supervision without calibration.
Does MAX6383XR46D3-T include a manual reset input (MR) or auxiliary voltage monitor (RESET IN)?
No, MAX6383XR46D3-T does not include MR or RESET IN functionality. Per the selector guide and pin configuration diagrams, only MAX6384–MAX6386 and MAX6390 feature MR, while MAX6387–MAX6389 include RESET IN. The MAX6383XR46D3-T is a minimal-feature variant with VCC-only monitoring and open-drain RESET output.
What package type and dimensions does MAX6383XR46D3-T use, and is it RoHS-compliant?
MAX6383XR46D3-T uses a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm × 0.95mm. The "+T" suffix confirms lead(Pb)-free/RoHS-compliant construction, with reflow profile compatible with standard Pb-free soldering processes (peak 260°C).
How does the open-drain RESET output of MAX6383XR46D3-T interface with a microcontroller that expects an active-high reset signal?
The MAX6383XR46D3-T's open-drain RESET output must be pulled up to the target MCU's reset rail (e.g., 3.3V or 5V) via an external resistor (typically 10kΩ). When asserted, RESET goes low; when deasserted, the pullup brings it high. This naturally creates an active-high reset signal at the MCU pin - no level-shifting circuitry is required.
Can MAX6383XR46D3-T operate reliably during fast VCC transients, such as those caused by switching regulators or motor loads?
Yes, MAX6383XR46D3-T includes built-in immunity to negative-going VCC transients. As shown in the "Maximum Transient Duration vs. Reset Comparator Overdrive" graph, it suppresses reset pulses for glitches shorter than ~1µs when overdrive is ≤100mV - making it suitable for use alongside noisy DC-DC converters and brushed motor drivers without additional filtering.
MAX6383XR46D3-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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR46D3-T FAQ
1.How can I place an order for MAX6383XR46D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D3-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 MAX6383XR46D3-T reliable?
The price and inventory of MAX6383XR46D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D3-T is usually 5 days.
3.What payment methods are accepted for MAX6383XR46D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR46D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR46D3-T?
MAX6383XR46D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR46D3-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 MAX6383XR46D3-T?
For technical support, including MAX6383XR46D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D3-T requirements.
6.How does Aetrix verify that MAX6383XR46D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D3-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 MAX6383XR46D3-T meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D3-T?
All MAX6383XR46D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D3-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 MAX6383XR46D3-T part is unused and in its original packaging.
Return procedure for MAX6383XR46D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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