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Analog Devices Inc./Maxim Integrated MAX6388XS24D7-T
- Part No.:
- MAX6388XS24D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS24D7-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,030
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Product details
Overview
MAX6388XS24D7-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.40V VCC reset threshold (±2.5% over -40°C to +125°C), 1200ms minimum VCC reset timeout, and auxiliary RESET IN input for dual-voltage monitoring. It operates from 1.0V to 5.5V supply and consumes only 3μA at 1.8V, targeting power-critical embedded systems requiring reliable brownout detection.
For engineers reviewing the MAX6388XS24D7-T datasheet, MAX6388XS24D7-T pinout, MAX6388XS24D7-T application, or MAX6388XS24D7-T equivalent, this device delivers guaranteed reset assertion down to VCC = 1V, negative-going transient immunity, and precise dual-threshold supervision in a space-constrained 4-pin SC70 package - critical for portable, automotive, and industrial control designs.
Technical Context
The MAX6388XS24D7-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.40V threshold while simultaneously accepting an external voltage via RESET IN (compared to internal 1.27V reference). Its internal timer guarantees 1200ms minimum reset assertion after VCC recovery, independent of temperature drift (±2.5% threshold accuracy).
It features an active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V and sinking 3.2mA when asserted, with logic-state validity maintained down to VCC = 1V. The RESET IN path includes 4.5µs propagation delay and ±50nA leakage, enabling accurate resistor-divider-based secondary supply monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.40V nominal, ±2.5% over -40°C to +125°C - ensures stable brownout detection across automotive and industrial temperature ranges |
| Reset Timeout Period | 1200ms minimum - provides sufficient hold time for complex μP initialization sequences |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in always-on sensor nodes |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and reduces BOM count |
| RESET IN Threshold | 1.27V internal reference - allows user-defined secondary supply threshold via resistor divider (e.g., 3.3V or 1.8V rail) |
| Operating Voltage Range | 1.0V to 5.5V - supports operation during deep brownout and compatibility with wide-input power architectures |
| Reset Propagation Delay | 35µs (VCC falling) / 4.5µs (RESET IN falling) - ensures fast response to supply faults without false triggering |
Pinout & Package
MAX6388XS24D7-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.3mm × 1.6mm × 0.95mm, optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor node - must be decoupled with 0.1µF capacitor near pin for transient immunity |
| 2 | RESET | Active-high push-pull reset output - drives high during fault; no external pullup required; valid down to VCC = 1V |
| 3 | GND | Analog/digital ground reference - requires low-impedance connection to system ground plane |
| 4 | RESET IN | Auxiliary voltage monitor input - high-impedance (±50nA leakage); used with resistor divider to set secondary reset threshold |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring capability | Simultaneous VCC (2.40V) and RESET IN (1.27V reference) supervision enables robust dual-rail systems like core/I/O voltage tracking |
| Negative-going VCC transient immunity | Rejects glitches up to 350µs wide at 100mV overdrive - prevents spurious resets in electrically noisy environments |
| Guaranteed operation down to VCC = 1V | Ensures deterministic reset state during deep undervoltage conditions, critical for fail-safe shutdown sequencing |
| Factory-trimmed threshold accuracy | ±2.5% over full temperature range eliminates need for external calibration in production test |
| Low quiescent current | 3μA at 1.8V enables integration into energy-harvesting and coin-cell-powered applications |
Applications
| Power Sequencing in Dual-Voltage Systems | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Monitoring both 3.3V I/O and 1.2V core rails in a microcontroller-based subsystem where out-of-sequence power-up could corrupt configuration registers. IC Role / Device Role / Timing Role: Primary supervisor providing synchronized reset assertion based on either rail failure, with RESET IN configured for 1.2V core via R1/R2 divider. Use Value: Eliminates need for two discrete supervisors; 1200ms timeout ensures complete firmware initialization before release. | Use Scenario: Supervising 5V supply and 12V-to-5V converter output in a CAN-connected BCM exposed to load-dump transients. IC Role / Device Role / Timing Role: VCC monitors main 5V rail; RESET IN monitors post-regulator voltage; active-high push-pull drives MCU reset directly. Use Value: 35µs VCC fault response and glitch immunity prevent false resets during alternator load dump events. |
| Industrial Sensor Node with Battery Backup | Medical Portable Diagnostic Device |
Use Scenario: Maintaining reliable reset during transition from mains to coin-cell backup in a wireless temperature sensor node. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and detects brownout to trigger graceful shutdown; RESET IN unused or tied to VCC. Use Value: 3μA supply current extends battery life beyond 5 years; 1200ms timeout accommodates EEPROM write completion before power loss. | Use Scenario: Ensuring deterministic boot state in a handheld ultrasound probe powered by Li-ion battery with variable discharge profile. IC Role / Device Role / Timing Role: Supervises 1.8V analog front-end and 3.3V digital domain; RESET IN configured for 1.8V rail using 1.27V reference. Use Value: ±2.5% threshold accuracy over -40°C to +125°C guarantees safe operation across clinical ambient and internal self-heating conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT24D7-T | Same electrical specs but in 6-pin μDFN (L611+1) instead of 4-pin SC70; higher thermal resistance (θJA = 477°C/W vs. 322.6°C/W) | Better suited for thermally constrained high-power boards where μDFN's larger pad improves heat dissipation | Select when board layout allows larger footprint and thermal management prioritizes junction-to-board conduction over size |
| TLV809K24DBZR | Single-supply only (no RESET IN); 2.43V threshold (±1.5%); 140ms timeout; SOT-23-3 package | Lacks dual-monitoring capability and long timeout - suitable only for basic single-rail reset with faster release | Choose only if RESET IN functionality is unnecessary and shorter reset duration is acceptable for simpler μC systems |
Compared with MAX6388LT24D7-T and TLV809K24DBZR, the MAX6388XS24D7-T uniquely balances ultra-small 4-pin SC70 footprint, dual-supply monitoring, and industry-leading 1200ms timeout - making it optimal for space-limited, functionally rich embedded controllers where both size and supervision depth matter.
Availability
MAX6388XS24D7-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, automotive body control modules, and industrial sensor nodes requiring stable component supply across extended temperature and long product lifecycles.
Supply support for MAX6388XS24D7-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX6381–MAX6390 family was designed specifically for low-power, precision microprocessor reset supervision in space- and energy-constrained applications - emphasizing factory-trimmed accuracy, wide temperature operation, and flexible monitoring topologies.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6388XS24D7-T?
The MAX6388XS24D7-T has a factory-set VCC reset threshold of 2.40V nominal, 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 "24"), and applies specifically to the VCC input - not the RESET IN pin, which references an internal 1.27V comparator.
Does MAX6388XS24D7-T support monitoring a second voltage rail?
Yes, the MAX6388XS24D7-T includes a dedicated RESET IN pin that compares an external voltage to an internal 1.27V reference. By connecting a resistor divider to RESET IN, users can configure a custom secondary reset threshold - for example, setting a 3.3V rail to trigger reset at 3.0V. This dual-monitoring capability is explicitly documented for MAX6387/MAX6388/MAX6389 variants.
What is the function and timing behavior of the RESET output on MAX6388XS24D7-T?
The MAX6388XS24D7-T features an active-high push-pull RESET output. It asserts high when VCC falls below 2.40V (or RESET IN falls below 1.27V) and remains high for a guaranteed minimum of 1200ms after the monitored voltage recovers. The output is valid down to VCC = 1V, and no external pullup resistor is needed due to its push-pull structure.
Is MAX6388XS24D7-T qualified for automotive applications?
No, MAX6388XS24D7-T is not automotive-qualified. While it operates over -40°C to +125°C and is RoHS-compliant, automotive-grade versions carry the "/V" suffix (e.g., MAX6388XS24D7/V+T) and undergo additional AEC-Q100 stress testing. The "-T" suffix denotes tape-and-reel packaging but does not imply automotive qualification.
What package type and dimensions does MAX6388XS24D7-T use?
MAX6388XS24D7-T uses a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 1.3mm × 1.6mm × 0.95mm. This compact RoHS-compliant package is distinct from the 6-pin μDFN option (e.g., MAX6388LT24D7-T) and is optimized for high-density PCB layouts where board space is at a premium.
MAX6388XS24D7-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:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 2.4V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS24D7-T FAQ
1.How can I place an order for MAX6388XS24D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS24D7-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 MAX6388XS24D7-T reliable?
The price and inventory of MAX6388XS24D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS24D7-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS24D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS24D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS24D7-T?
MAX6388XS24D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS24D7-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 MAX6388XS24D7-T?
For technical support, including MAX6388XS24D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS24D7-T requirements.
6.How does Aetrix verify that MAX6388XS24D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS24D7-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 MAX6388XS24D7-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS24D7-T?
All MAX6388XS24D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS24D7-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 MAX6388XS24D7-T part is unused and in its original packaging.
Return procedure for MAX6388XS24D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS24D7-T Tags
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