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Analog Devices Inc./Maxim Integrated MAX6384XS28D2+T
- Part No.:
- MAX6384XS28D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6384XS28D2+T.pdf
- Description:
- IC MPU/RESET CIRC 2.80V SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,197
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Product details
Overview
MAX6384XS28D2+T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 2.80V reset threshold (±2.5% over -40°C to +125°C), 20ms minimum reset timeout, and debounced manual reset input (MR). 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 battery-powered controllers and portable instrumentation for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6384XS28D2+T datasheet, MAX6384XS28D2+T pinout, MAX6384XS28D2+T application, or MAX6384XS28D2+T equivalent, key selection criteria include its 4-pin SC70 package, MR input with internal 63kΩ pullup, ±2.5% threshold accuracy across automotive temperature range, and compatibility with dual-voltage monitoring systems requiring deterministic reset timing.
Technical Context
The MAX6384XS28D2+T implements a precision voltage comparator with hysteresis-free threshold detection referenced to an internal bandgap, coupled to a digital timeout counter that initiates on VCC fall below 2.80V or MR assertion. Its reset logic guarantees monotonic assertion/deassertion behavior during slow-rising VCC transitions and rejects transients ≤35µs at 100mV overdrive.
This device integrates a dedicated MR input with 1µs minimum pulse width requirement and 100ns glitch rejection, enabling robust manual reset initiation without external debounce. The push-pull active-low RESET output drives up to 3.2mA sink current at VCC ≥ 4.5V with VOL ≤ 0.4V, ensuring TTL/CMOS-compatible signaling into typical µP reset inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.80V nominal, ±2.5% over -40°C to +125°C - ensures stable reset activation across automotive temperature range without calibration. |
| Reset Timeout | 20ms minimum - provides sufficient hold time for microcontroller initialization after power stabilization. |
| VCC Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable medical devices. |
| MR Input Pullup | 63kΩ internal resistor - allows direct connection of momentary switch to GND without external components. |
| RESET Output Type | Active-low push-pull - eliminates need for external pullup resistor and supports direct drive of µP reset pins. |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion even during deep brownout conditions down to 1V supply. |
| Reset Propagation Delay | 35µs max (VCC falling at 10mV/µs) - ensures fast response to supply collapse without false triggering on noise. |
Pinout & Package
MAX6384XS28D2+T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - powers internal circuitry and serves as reference for reset threshold detection. |
| 2 | RESET | Active-low push-pull reset output - asserts low during VCC undervoltage or MR activation and holds for full timeout period. |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC via 63kΩ resistor; pulling low forces immediate reset assertion. |
| 4 | GND | Analog and digital ground reference - must be connected directly to system ground plane for accurate threshold sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.80V with ±2.5% tolerance over full -40°C to +125°C range - eliminates need for external resistor dividers or calibration. |
| Debounced manual reset input | MR accepts sub-microsecond pulses and rejects >100ns glitches - enables reliable reset initiation via mechanical switches or noisy control lines. |
| Low-voltage operation guarantee | Valid RESET output state maintained down to VCC = 1.0V - ensures deterministic reset behavior during deep brownout recovery. |
| Negative-going transient immunity | Rejects VCC glitches ≤35µs duration at 100mV overdrive - prevents spurious resets in electrically noisy environments like motor control systems. |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on wearable and remote sensor applications by minimizing standby drain. |
Applications
| Portable Medical Sensors | Battery-Powered Controllers |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Supervises VCC during cold-start and battery sag; asserts reset until regulated 3.3V rail stabilizes post-boost conversion. Use Value: Prevents firmware lockup during 1.8V–2.2V battery depletion phase using guaranteed reset validity down to VCC = 1V. |
Use Scenario: Industrial HVAC controller with dual 3.3V/5V rails and front-panel reset button. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and provides hardware reset via MR input tied to tactile switch. Use Value: Eliminates external debounce RC network using integrated 63kΩ pullup and 100ns glitch rejection on MR. |
| Automotive Body Control Modules | Dual-Voltage Embedded Systems |
Use Scenario: Door module operating across -40°C to +125°C ambient with 5V supply from vehicle battery. IC Role / Device Role / Timing Role: Detects brownout events during engine cranking (transient dips to 6V); asserts 20ms reset pulse to safeguard MCU state. Use Value: Meets AEC-Q100 requirements with ±2.5% threshold accuracy and guaranteed operation over full automotive temperature range. |
Use Scenario: FPGA-based data acquisition board with separate 1.2V core and 3.3V I/O supplies. IC Role / Device Role / Timing Role: Primary supervisor for 3.3V rail; coordinated reset sequencing with secondary supervisor on core rail. Use Value: Enables precise 20ms reset hold time to satisfy FPGA configuration timing requirements before releasing PROG_B. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR28D2+T | Same 2.80V threshold and 20ms timeout, but no MR input and 3-pin SC70 package. | Lacks manual reset capability; suited for fixed-supply systems where operator-initiated reset is unnecessary. | Select when board space is critical and MR functionality is omitted from system architecture. |
| TPS3808G18DBVR | 2.80V threshold, 20ms timeout, but open-drain RESET output and higher 8μA supply current at +1.8V. | Requires external pullup resistor; less suitable for low-power battery applications due to 2.7× higher ICC. | Choose only if open-drain interface is required for wired-OR reset bus topology. |
Compared with MAX6384XS28D2+T, MAX6326XR28D2+T saves board area but removes MR flexibility, while TPS3808G18DBVR adds wiring complexity and increases standby current - making MAX6384XS28D2+T optimal for compact, manually resettable, ultra-low-power embedded controllers.
Availability
MAX6384XS28D2+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered controllers, automotive body modules, and dual-voltage embedded systems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6384XS28D2+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.
MAX6384XS28D2+T belongs to the MAX6381–MAX6390 family of microprocessor supervisory circuits engineered specifically for robust power-monitoring in space- and energy-constrained embedded systems across automotive and portable markets.
FAQ
What is the exact reset threshold voltage of MAX6384XS28D2+T and how stable is it over temperature?
The MAX6384XS28D2+T has a factory-set nominal reset threshold of 2.80V, with guaranteed tolerance of ±2.5% over the full operating temperature range of -40°C to +125°C. This stability is achieved through laser-trimmed bandgap references and matched transistor ratios in the BiCMOS process, eliminating need for external calibration or compensation networks in automotive and industrial deployments.
Does MAX6384XS28D2+T require an external pullup resistor on its RESET output?
No, MAX6384XS28D2+T features an active-low push-pull RESET output, meaning it actively drives both high and low states without requiring an external pullup resistor. This simplifies PCB layout and reduces BOM count compared to open-drain alternatives like MAX6383 or TPS3808, and ensures clean signal edges into microcontroller reset inputs.
How does the manual reset input (MR) of MAX6384XS28D2+T behave during power-up?
The MR input of MAX6384XS28D2+T includes an internal 63kΩ pullup resistor to VCC, so it defaults high at power-up and does not assert reset unless actively pulled low. When asserted, reset remains active for the full 20ms timeout after MR is released - ensuring reliable MCU initialization even if the manual reset switch is released prematurely.
Can MAX6384XS28D2+T operate reliably at VCC = 1.2V?
Yes, MAX6384XS28D2+T guarantees valid RESET output logic state down to VCC = 1.0V, including correct assertion and deassertion behavior at 1.2V. This enables safe operation during deep brownout recovery in battery-powered systems where supply voltage may dip below typical LDO dropout thresholds before stabilizing.
What package type and dimensions does MAX6384XS28D2+T use?
MAX6384XS28D2+T uses a lead-free 4-pin SC70 package (outline number 21-0098) measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern (90-0187) supports standard reflow soldering per JEDEC J-STD-020, and the package is rated for operation up to +125°C ambient - making it suitable for high-density portable and automotive PCB assemblies.
MAX6384XS28D2+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.8V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6384XS28D2+T FAQ
1.How can I place an order for MAX6384XS28D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6384XS28D2+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 MAX6384XS28D2+T reliable?
The price and inventory of MAX6384XS28D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6384XS28D2+T is usually 5 days.
3.What payment methods are accepted for MAX6384XS28D2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6384XS28D2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6384XS28D2+T?
MAX6384XS28D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6384XS28D2+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 MAX6384XS28D2+T?
For technical support, including MAX6384XS28D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6384XS28D2+T requirements.
6.How does Aetrix verify that MAX6384XS28D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6384XS28D2+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 MAX6384XS28D2+T meets industry standards.
7.What is the process for return or replacement of MAX6384XS28D2+T?
All MAX6384XS28D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6384XS28D2+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 MAX6384XS28D2+T part is unused and in its original packaging.
Return procedure for MAX6384XS28D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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