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Analog Devices Inc./Maxim Integrated MAX6388XS30D2-T
- Part No.:
- MAX6388XS30D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS30D2-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
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Product details
Overview
MAX6388XS30D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 3.00V VCC reset threshold (±2.5% over -40°C to +125°C), and 20ms minimum reset timeout period. It monitors single supply voltage in battery-powered embedded systems and guarantees valid reset state down to VCC = 1.0V. Designed for dual-voltage systems requiring auxiliary voltage monitoring, it includes RESET IN input referenced to +1.27V internal comparator.
For engineers reviewing the MAX6388XS30D2-T datasheet, MAX6388XS30D2-T pinout, MAX6388XS30D2-T application, or MAX6388XS30D2-T equivalent, key selection criteria include its 4-pin SC70 package, 3μA supply current at 1.8V, ±2.5% reset threshold accuracy over temperature, and support for user-adjustable secondary voltage monitoring via external resistor divider on RESET IN.
Technical Context
The MAX6388XS30D2-T implements a precision bandgap-based reset comparator with 60ppm/°C tempco and guaranteed operation from VCC = 1.0V to 5.5V. Its RESET IN input compares external voltage against a stable +1.27V reference, enabling configurable secondary supply monitoring independent of VCC threshold.
It features an active-high push-pull RESET output with VOH ≥ 0.8×VCC (ISOURCE = 500µA at VCC ≥ 2.5V) and VOL ≤ 0.3V (ISINK = 1.2mA), ensuring robust logic-level compatibility across supply rails. The device asserts reset when either VCC falls below 3.00V or RESET IN drops below 1.27V, with propagation delay under 4.5µs for RESET IN transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive and industrial temperature ranges |
| Reset Timeout Period | 20ms minimum - provides sufficient hold time for microcontroller initialization after power recovery |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year battery life in portable equipment |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct connection to μP reset input |
| RESET IN Threshold | +1.27V ±2.5% - allows precise secondary voltage monitoring using standard resistor dividers |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions |
| Reset Propagation Delay | ≤4.5µs (RESET IN to RESET) - supports fast response to auxiliary supply faults without introducing system latency |
Pinout & Package
MAX6388XS30D2-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, suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - powers internal circuitry and triggers reset when falling below 3.00V |
| 2 | RESET | Active-high push-pull output - drives high during reset assertion; sinks 1.2mA at VCC ≥ 2.5V, sources 500µA when deasserted |
| 3 | GND | Ground reference - common return path for all internal circuits and reset comparator references |
| 4 | RESET IN | Auxiliary voltage monitor input - high-impedance node compared to +1.27V reference; accepts external resistor-divider for custom threshold setting |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage monitoring capability | Simultaneous VCC (3.00V) and RESET IN (+1.27V reference) supervision enables independent tracking of core and I/O rails |
| Negative-going VCC transient immunity | Rejects glitches up to 150µs wide at 100mV overdrive - prevents spurious resets in noisy power environments |
| Low-power operation | 3μA ICC at 1.8V allows integration into always-on subsystems without compromising battery runtime |
| Guaranteed reset validity down to 1.0V | Ensures deterministic μP reset behavior during deep undervoltage events before complete power collapse |
| Factory-trimmed precision threshold | ±2.5% tolerance over full temperature range eliminates need for external calibration in production |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Wearable ECG sensor operating from coin-cell battery with separate analog front-end and digital MCU supply rails. IC Role / Device Role / Timing Role: Supervises both 3.0V MCU supply (VCC) and 1.8V analog sensor rail (via RESET IN resistor divider) to prevent corrupted measurements during brownout. Use Value: 20ms reset timeout ensures full ADC initialization; 3μA quiescent current extends battery life beyond 3 years. |
Use Scenario: Door module with LIN interface, MCU, and motor driver powered by 12V battery with local 5V and 3.3V regulators. IC Role / Device Role / Timing Role: Monitors 3.3V MCU supply (VCC) and 5V I/O rail (via RESET IN) to detect regulator failure before CAN/LIN communication loss. Use Value: Dual-threshold detection enables early fault isolation; ±2.5% accuracy meets AEC-Q100 requirements for automotive electronics. |
| Industrial IoT Edge Nodes | Smart Energy Meters |
Use Scenario: LoRaWAN node with ultra-low-power MCU, RF transceiver, and sensor hub powered by energy harvesting circuitry. IC Role / Device Role / Timing Role: Tracks harvested supply (VCC) and supercapacitor backup rail (via RESET IN) to maintain secure boot integrity during intermittent power availability. Use Value: Valid reset down to 1.0V prevents undefined MCU state during capacitor discharge; 4-pin SC70 minimizes PCB footprint. |
Use Scenario: Revenue-grade meter with isolated MCU, metrology ASIC, and RTC, powered by mains and backup lithium battery. IC Role / Device Role / Timing Role: Supervises 3.0V metrology rail (VCC) and 3.3V RTC supply (via RESET IN) to guarantee accurate timekeeping and tamper-proof logging during grid outages. Use Value: 20ms timeout aligns with RTC initialization sequence; 60ppm/°C tempco maintains timing accuracy across -40°C to +85°C operating range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT30D2-T | Same electrical specs but in 6-pin µDFN package - larger footprint, better thermal performance (θJA = 477°C/W vs. 322.6°C/W) | Suitable for thermally demanding industrial applications where board space permits larger package | Select when higher power dissipation margin or reflow compatibility with µDFN land patterns is required |
| TPS3808G30DBVR | 3.0V threshold, 20ms timeout, but only VCC monitoring - no RESET IN input; 1.8µA ICC at 1.8V | Lacks auxiliary voltage monitoring capability - cannot replace MAX6388XS30D2-T in dual-rail systems | Choose only for single-supply applications where RESET IN functionality is unnecessary and lower ICC is critical |
Compared with MAX6388LT30D2-T, the MAX6388XS30D2-T offers identical supervision functionality in a smaller 4-pin SC70 package ideal for space-constrained designs, while the TPS3808G30DBVR provides lower quiescent current but sacrifices the dual-monitoring capability essential for systems requiring independent core/I/O rail supervision.
Availability
MAX6388XS30D2-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, dual voltage systems, and critical μP and μC power monitoring requiring stable component supply and long-term lifecycle support.
Supply support for MAX6388XS30D2-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 delivers ultra-low-power, precision voltage supervision for microprocessor-based systems, with design emphasis on battery longevity, dual-rail monitoring, and AEC-Q100 qualified variants for automotive use.
FAQ
What is the exact reset threshold voltage of MAX6388XS30D2-T and how stable is it over temperature?
The MAX6388XS30D2-T has a factory-set VCC reset threshold of 3.00V with ±2.5% tolerance over the full operating temperature range of -40°C to +125°C. This stability is achieved through precision bandgap referencing and 60ppm/°C tempco design, ensuring consistent brownout detection without external calibration across automotive and industrial environments.
Does MAX6388XS30D2-T support monitoring of a second voltage rail, and if so, how is it implemented?
Yes, MAX6388XS30D2-T supports secondary voltage monitoring via its dedicated RESET IN pin, which compares an external voltage against an internal +1.27V reference. Users implement this by connecting a resistor divider between the target rail and ground, calculating R1 and R2 using the formula R1 = R2 × [(VINTH / 1.27V) – 1], enabling precise custom thresholds for I/O or analog supplies.
What is the reset timeout period of MAX6388XS30D2-T and how does it affect system startup?
The MAX6388XS30D2-T provides a minimum reset timeout period of 20ms, ensuring the reset signal remains asserted long enough for microcontrollers to complete internal initialization sequences after power recovery. This fixed delay is internally generated and independent of external components, guaranteeing deterministic boot behavior in safety-critical applications.
Can MAX6388XS30D2-T operate reliably at very low supply voltages, and what is its minimum functional VCC?
Yes, MAX6388XS30D2-T guarantees correct reset output logic state down to VCC = 1.0V, allowing it to assert reset even during deep brownout conditions before complete power collapse. This feature ensures μP reset integrity in energy-harvesting and battery-depleted scenarios where supply may dip below nominal levels.
What package type and dimensions does MAX6388XS30D2-T use, and is it RoHS-compliant?
MAX6388XS30D2-T uses a lead-free, RoHS-compliant 4-pin SC70 package (outline 21-0098) measuring 2.0mm × 2.1mm × 0.95mm. Its compact footprint supports high-density PCB layouts in portable and wearable electronics, and the "+T" suffix confirms compliance with environmental regulations.
MAX6388XS30D2-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:
- 3V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS30D2-T FAQ
1.How can I place an order for MAX6388XS30D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS30D2-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 MAX6388XS30D2-T reliable?
The price and inventory of MAX6388XS30D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS30D2-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS30D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS30D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS30D2-T?
MAX6388XS30D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS30D2-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 MAX6388XS30D2-T?
For technical support, including MAX6388XS30D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS30D2-T requirements.
6.How does Aetrix verify that MAX6388XS30D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS30D2-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 MAX6388XS30D2-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS30D2-T?
All MAX6388XS30D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS30D2-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 MAX6388XS30D2-T part is unused and in its original packaging.
Return procedure for MAX6388XS30D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS30D2-T Tags
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MIC826SYMT-TR
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