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Analog Devices Inc./Maxim Integrated MAX6383XR46D3
- Part No.:
- MAX6383XR46D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR46D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:417
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Product details
Overview
MAX6383XR46D3 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. It operates from 1.0V to 5.5V supply, draws only 3µA at 1.8V, and guarantees valid reset state down to VCC = 1V - used in portable battery-powered equipment and critical µP power monitoring.
For engineers reviewing the MAX6383XR46D3 datasheet, MAX6383XR46D3 pinout, MAX6383XR46D3 application, or MAX6383XR46D3 equivalent, key selection factors include its SC70-3 open-drain configuration, 4.63V threshold accuracy, 140ms timeout, negative-going transient immunity, and compatibility with systems requiring guaranteed reset assertion during brownout conditions.
Technical Context
The MAX6383XR46D3 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 enforces a fixed 140ms minimum reset timeout after VCC rises above 4.63V.
As an open-drain device, it requires an external pull-up resistor on the RESET pin and asserts low when VCC falls below threshold or during power-down. It lacks manual reset (MR) and auxiliary RESET IN inputs - distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal (min 4.51V, max 4.74V); sets precise brownout detection point for 5V systems. |
| Reset Timeout | 140ms minimum; ensures µP remains held in reset long enough for stable power rail recovery. |
| 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 valid reset assertion even during deep brownout down to 1V VCC. |
| Threshold Accuracy | ±2.5% over full temperature range; eliminates need for system-level calibration in industrial environments. |
| Output Type | Open-drain active-low; allows wired-OR reset bus sharing across multiple supervisors or logic domains. |
| Temp Range | -40°C to +125°C; qualified for under-hood automotive and industrial control applications. |
Pinout & Package
MAX6383XR46D3 is housed in a 3-pin SC70 package (pkg code X3-2), measuring 2.0mm × 2.1mm × 0.95mm, with lead-free RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and timer; must be low-impedance connection to system ground plane. |
| 2 | RESET | Open-drain active-low reset output; requires external pull-up (typically 10kΩ to VCC or another rail). |
| 3 | VCC | Power supply input and monitored voltage source; supplies internal circuitry and defines reset threshold reference. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V threshold | Eliminates external resistor divider and reduces BOM count in 5V µP systems. |
| 140ms guaranteed reset timeout | Meets JEDEC JESD76 requirements for reliable power-up sequencing in embedded controllers. |
| 3µA supply current at 1.8V | Extends battery life in always-on monitoring nodes without compromising reset reliability. |
| Valid reset down to VCC = 1V | Prevents spurious release during slow power ramp-up or severe brownout events. |
| 60ppm/°C threshold tempco | Maintains tight voltage margin across automotive under-hood temperature swings. |
Applications
| Industrial PLC I/O Module | Medical Infusion Pump Controller |
|---|---|
Use Scenario: Monitors 5V logic rail in DIN-rail mounted programmable logic controller I/O modules exposed to wide ambient temperatures. IC Role / Device Role / Timing Role: Supervisory IC asserting active-low reset to ARM Cortex-M7 MCU during undervoltage events. Use Value: 4.63V threshold matches 5V ±5% spec; 140ms timeout exceeds EN 61000-4-11 immunity test hold time. | Use Scenario: Ensures safe startup and fault recovery in battery-backed infusion pump main controller board. IC Role / Device Role / Timing Role: Open-drain reset supervisor tied to shared reset bus with safety microcontroller and motor driver ASIC. Use Value: 3µA quiescent current preserves backup battery runtime; ±2.5% accuracy prevents false resets during thermal cycling. |
| Automotive Body Control Module | Smart Energy Meter MCU Subsystem |
Use Scenario: Embedded in BCM subassembly monitoring switched 5V supply powering CAN transceivers and door lock drivers. IC Role / Device Role / Timing Role: Brownout detector triggering hardware reset of Infineon AURIX TC3xx before voltage collapse. Use Value: -40°C to +125°C rating meets AEC-Q100 Grade 2; 60ppm/°C tempco maintains margin under hood heat soak. | Use Scenario: Secures metering SoC (e.g., ST STM32L4+) during AC mains dips and capacitor discharge events. IC Role / Device Role / Timing Role: Primary reset source asserting low until 5V rail stabilizes post-power-loss recovery. Use Value: Valid reset down to VCC = 1V prevents premature release during slow recharge of bulk storage capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LTR46D3+ | Same 4.63V threshold and 140ms timeout; push-pull active-low output; 6-pin µDFN package. | Requires PCB layout change due to different pinout and package; no external pull-up needed. | Select when board space permits larger package and push-pull drive simplifies routing. |
| TPS3808G33DBVR | 3.3V threshold (not 4.63V); 200ms timeout; open-drain; 5-pin SOT-23. | Not a direct voltage-match alternative; suitable only if system uses 3.3V core rail monitoring instead of 5V. | Choose only for 3.3V systems; verify timing compliance with µP reset hold requirement. |
Compared with MAX6383XR46D3, MAX6326LTR46D3+ offers identical electrical specs but eliminates external pull-up dependency, while TPS3808G33DBVR serves a different voltage domain entirely - making MAX6383XR46D3 uniquely suited for 5V brownout protection with minimal footprint.
Availability
MAX6383XR46D3 is available at Aetrix Electronics and suitable for industrial PLCs, medical infusion pumps, automotive body control modules, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6383XR46D3 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.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy reset supervision for battery-constrained and thermally harsh environments - optimized for µP reliability in portable, automotive, and industrial edge devices.
FAQ
What is the exact reset threshold voltage of MAX6383XR46D3 and how tightly is it specified?
The MAX6383XR46D3 has a factory-set nominal reset threshold of 4.63V, with guaranteed limits of 4.51V (min) and 4.74V (max) across -40°C to +125°C. This ±2.5% accuracy eliminates need for external trimming and ensures consistent brownout response in 5V systems where margin against 5.0V ±5% tolerance is critical. The MAX6383XR46D3 achieves this via laser-trimmed bandgap reference and matched comparator design.
Does MAX6383XR46D3 support manual reset functionality?
No, MAX6383XR46D3 does not include a manual reset (MR) input. It is a dedicated single-supply monitor with only VCC, GND, and open-drain RESET pins. Manual reset capability is present only in MAX6384/MAX6385/MAX6386/MAX6390 variants. For systems requiring MR, consider MAX6384XR46D3 or MAX6390XR46D4 as alternatives - but note these differ in pin count, package, and timing behavior.
What package type and dimensions does MAX6383XR46D3 use?
MAX6383XR46D3 uses the 3-pin SC70 package (pkg code X3-2), with footprint dimensions of 2.0mm × 2.1mm and height of 0.95mm. It is RoHS-compliant and lead-free. This ultra-compact outline enables placement in space-constrained applications like wearable health monitors and miniaturized industrial sensors where board area is at premium.
Can MAX6383XR46D3 operate reliably during fast VCC transients?
Yes, MAX6383XR46D3 provides inherent immunity to short negative-going VCC transients (glitches). Its internal comparator architecture rejects pulses ≤35µs wide when overdrive is 100mV below threshold - verified per Typical Operating Characteristics graph "Maximum Transient Duration vs. Reset Comparator Overdrive". Adding a 0.1µF ceramic capacitor close to VCC further enhances noise rejection in electrically noisy environments.
Is MAX6383XR46D3 pin-compatible with legacy Maxim reset ICs like MAX809?
No, MAX6383XR46D3 is not pin-compatible with MAX809. While both are 3-pin SC70 reset supervisors, MAX809 uses pin 1 = VCC, pin 2 = GND, pin 3 = RESET - whereas MAX6383XR46D3 uses pin 1 = GND, pin 2 = RESET, pin 3 = VCC. Swapping them would cause immediate malfunction. Pin compatibility is explicitly stated only for MAX6381–MAX6383 series among themselves, not with older families.
MAX6383XR46D3 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:
- 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 FAQ
1.How can I place an order for MAX6383XR46D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D3 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 reliable?
The price and inventory of MAX6383XR46D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D3 is usually 5 days.
3.What payment methods are accepted for MAX6383XR46D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR46D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR46D3?
MAX6383XR46D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR46D3 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?
For technical support, including MAX6383XR46D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D3 requirements.
6.How does Aetrix verify that MAX6383XR46D3 is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D3 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 meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D3?
All MAX6383XR46D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D3, 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 part is unused and in its original packaging.
Return procedure for MAX6383XR46D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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