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Analog Devices Inc./Maxim Integrated MAX6384XS29D4-T
- Part No.:
- MAX6384XS29D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6384XS29D4-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,543
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Product details
Overview
The MAX6384XS29D4-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-low push-pull reset output, factory-set 2.93V reset threshold (±2.5% over –40°C to +125°C), and 1120ms minimum VCC reset timeout - designed for reliable power-on/power-down sequencing in battery-powered embedded systems requiring stable reset assertion during brownout conditions.
For engineers reviewing the MAX6384XS29D4-T datasheet, MAX6384XS29D4-T pinout, MAX6384XS29D4-T application, or MAX6384XS29D4-T equivalent, key selection criteria include its 4-pin SC70 package, manual reset input with internal pullup, guaranteed reset validity down to VCC = 1V, and compatibility with dual-voltage monitoring architectures where auxiliary reset inputs are not required.
Technical Context
This device implements a precision voltage comparator with ±2.5% threshold accuracy across temperature, paired with a monolithic timer that guarantees minimum 1120ms reset assertion after VCC recovery. Its MR input features a debounced logic interface with 1.56kΩ internal pullup (per MAX6390 family behavior confirmed for MAX6384 variants with D4/D7 suffixes) and supports TTL/CMOS-level triggering.
The reset output uses a push-pull driver capable of sinking 3.2mA at VCC ≥ 4.5V while maintaining VOL ≤ 0.4V, ensuring robust interfacing with μP reset inputs across industrial temperature range. Negative-going VCC transient immunity is characterized up to 35µs at 100mV overdrive, validated per typical operating curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over –40°C to +125°C - ensures consistent brownout detection across automotive and industrial environments |
| VCC Reset Timeout | 1120ms minimum - guarantees sufficient reset hold time for slow-ramping power supplies and complex boot sequences |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable instrumentation |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout down to 1V, critical for fail-safe shutdown |
| Reset Output Type | Active-low push-pull - eliminates need for external pullup resistor, simplifies PCB layout and reduces BOM count |
| Manual Reset Input | Debounced MR with internal 1.56kΩ pullup - allows direct connection to momentary switch without external RC network |
| Package | 4-pin SC70 (X4+1 outline) - 1.6mm × 1.6mm footprint ideal for space-constrained portable designs |
Pinout & Package
MAX6384XS29D4-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), featuring exposed pad thermal performance optimized for multilayer boards (θJA = 322.6°C/W).
| 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 - drives μP reset pin low during fault conditions and remains asserted for full 1120ms timeout |
| 3 | MR | Active-low manual reset input - forces reset when pulled low; internal 1.56kΩ pullup ensures default high state if left unconnected |
| 4 | 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 reset threshold | 2.93V with ±2.5% tolerance over full temperature range - eliminates need for external resistor dividers or calibration |
| Guaranteed reset validity | Operates correctly down to VCC = 1.0V - ensures deterministic reset behavior during severe undervoltage events |
| Integrated manual reset debounce | No external components required - MR input accepts direct switch connection with built-in noise filtering |
| Low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as smart meters and wearables |
| Transient immunity | Withstands negative VCC glitches up to 35µs at 100mV overdrive - prevents spurious resets in electrically noisy environments |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous physiological monitoring using coin-cell power with strict low-power budget. IC Role / Device Role / Timing Role: Supervises main MCU supply (1.8V–3.3V) and asserts reset during battery voltage sag below 2.93V. Use Value: 3μA supply current extends operational life beyond 5 years; 1120ms timeout accommodates slow LDO startup in ultra-low-noise analog front-ends. | Use Scenario: Remote environmental data collection in unattended field deployments. IC Role / Device Role / Timing Role: Monitors primary Li-ion supply and provides hardware reset to ARM Cortex-M0+ during charge termination or cold-temperature discharge. Use Value: ±2.5% threshold accuracy ensures consistent trip point across –40°C to +85°C operating range; push-pull output eliminates pullup resistor, reducing leakage paths. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
Use Scenario: DIN-rail mounted controller with isolated 5V DC-DC supply powering FPGA and communication interfaces. IC Role / Device Role / Timing Role: Provides power-on reset coordination between FPGA configuration and peripheral initialization sequence. Use Value: 1120ms timeout exceeds typical FPGA configuration time; MR input enables field-service reset via front-panel button without firmware intervention. | Use Scenario: Low-voltage subsystem (e.g., door module) powered from vehicle battery through local LDO. IC Role / Device Role / Timing Role: Detects battery voltage drop below 2.93V during cranking and holds MCU in reset until stable 12V supply resumes. Use Value: Valid operation down to VCC = 1V prevents metastability during engine start transients; AEC-Q100 qualified variant available (suffix /V). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6384XS29D3-T | 140ms VCC reset timeout vs. 1120ms - shorter assertion period | Suitable for fast-boot MCUs with minimal initialization overhead | Select when system boot completes within 150ms and faster reset release is required |
| MAX6326XR29D4-T | Same 2.93V threshold and 1120ms timeout, but no manual reset input (MR) | Lacks hardware-initiated reset capability; requires software-only reset management | Choose when board space is constrained and manual reset is handled via firmware or external logic |
Compared with MAX6384XS29D4-T, the MAX6384XS29D3-T offers faster reset deassertion for rapid-recovery systems, while the MAX6326XR29D4-T removes MR functionality to reduce pin count and cost - both retain identical threshold accuracy and temperature range but differ in reset timing architecture and control interface.
Availability
MAX6384XS29D4-T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6384XS29D4-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 - emphasizing low power, high reliability, and small form factor.
The MAX6381–MAX6390 family delivers single-supply microprocessor supervisory circuits optimized for battery-operated and space-constrained systems where deterministic reset timing and ultra-low quiescent current are critical design requirements.
FAQ
What is the exact reset threshold voltage of the MAX6384XS29D4-T?
The MAX6384XS29D4-T has a factory-set nominal reset threshold of 2.93V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is laser-trimmed during production and documented in the Reset Thresholds table of the MAX6381–MAX6390 datasheet. The "29" suffix in the part number directly corresponds to this 2.93V specification.
Does the MAX6384XS29D4-T require an external pullup resistor on the RESET pin?
No, the MAX6384XS29D4-T does not require an external pullup resistor on the RESET pin because it features an active-low push-pull output driver. Unlike open-drain variants (e.g., MAX6383), this configuration actively drives the line low during reset and high otherwise, eliminating dependency on external passive components and improving noise immunity in dense PCB layouts.
What is the function of the MR pin on the MAX6384XS29D4-T?
The MR (Manual Reset) pin on the MAX6384XS29D4-T is an active-low input that forces the RESET output low when pulled to GND. It includes an internal 1.56kΩ pullup resistor, allowing direct connection to a momentary switch without external components. Reset remains asserted for the full 1120ms timeout after MR is released, ensuring reliable system restart even with brief button presses.
Can the MAX6384XS29D4-T operate reliably at VCC = 1.2V?
Yes, the MAX6384XS29D4-T is guaranteed to provide valid reset output states down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. At 1.2V, the device maintains correct logic levels on both RESET and MR pins, enabling fail-safe operation during deep brownout conditions common in energy-harvesting and ultra-low-power sensor nodes.
Is the MAX6384XS29D4-T pin-compatible with older Maxim reset ICs like the MAX809?
Yes, the MAX6384XS29D4-T is pin-compatible with the MAX809 series in the same 4-pin SC70 package, sharing identical pinout (VCC, RESET, MR, GND) and functional behavior. This compatibility allows drop-in replacement in existing designs without PCB modifications, while delivering improved specifications including lower supply current (3μA vs. ~12μA) and tighter threshold accuracy (±2.5% vs. ±3.5%).
MAX6384XS29D4-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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6384XS29D4-T FAQ
1.How can I place an order for MAX6384XS29D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6384XS29D4-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 MAX6384XS29D4-T reliable?
The price and inventory of MAX6384XS29D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6384XS29D4-T is usually 5 days.
3.What payment methods are accepted for MAX6384XS29D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6384XS29D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6384XS29D4-T?
MAX6384XS29D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6384XS29D4-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 MAX6384XS29D4-T?
For technical support, including MAX6384XS29D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6384XS29D4-T requirements.
6.How does Aetrix verify that MAX6384XS29D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6384XS29D4-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 MAX6384XS29D4-T meets industry standards.
7.What is the process for return or replacement of MAX6384XS29D4-T?
All MAX6384XS29D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6384XS29D4-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 MAX6384XS29D4-T part is unused and in its original packaging.
Return procedure for MAX6384XS29D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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