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Analog Devices Inc./Maxim Integrated MAX6388XS30D7-T
- Part No.:
- MAX6388XS30D7-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS30D7-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,926
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Product details
Overview
MAX6388XS30D7-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), 1200ms minimum VCC reset timeout, and auxiliary RESET IN input for dual-voltage monitoring in embedded power management systems.
For engineers reviewing the MAX6388XS30D7-T datasheet, MAX6388XS30D7-T pinout, MAX6388XS30D7-T application, or MAX6388XS30D7-T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over temperature, 1200ms timeout compliance, and compatibility with dual-rail systems requiring independent VCC and RESET IN monitoring.
Technical Context
The MAX6388XS30D7-T integrates a precision voltage comparator for VCC monitoring against a 3.00V threshold and a separate +1.27V reference comparator for the RESET IN pin, enabling independent supervision of two power rails. It asserts an active-high push-pull RESET signal when either voltage falls below its respective threshold.
Reset assertion is sustained for a guaranteed minimum 1200ms after VCC or RESET IN recovers, with internal timing based on a temperature-stable RC oscillator. The device operates from 1.0V to 5.5V supply and consumes only 3μA at 1.8V, supporting battery-powered and low-voltage industrial applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 3.00V (nominal), ±2.5% tolerance over -40°C to +125°C - ensures reliable brownout detection across automotive and industrial temperature ranges |
| RESET Timeout Period | 1200ms (min) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable devices |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct interface to μP reset inputs |
| RESET IN Threshold | +1.27V (±2.5% over temp) - allows precise user-defined secondary voltage monitoring via external resistor divider |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout conditions down to 1V VCC |
| Input Leakage (RESET IN) | ±1nA max - permits use of high-value resistors (>1MΩ) in voltage dividers without threshold error |
Pinout & Package
MAX6388XS30D7-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 PCB layouts in portable and automotive electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor rail - powers internal circuitry and triggers reset when falling below 3.00V threshold |
| 2 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted; no external pullup required |
| 3 | GND | Analog and digital ground reference - must be connected to system ground plane for accurate threshold sensing |
| 4 | RESET IN | Auxiliary voltage monitor input - compared to internal +1.27V reference; enables dual-rail supervision without additional ICs |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | Simultaneous supervision of VCC (3.00V threshold) and external rail via RESET IN (+1.27V reference), reducing BOM count in multi-supply systems |
| Guaranteed reset validity down to VCC = 1V | Ensures deterministic reset behavior during severe brownout - critical for fail-safe operation in automotive and industrial controllers |
| 1200ms minimum reset timeout | Meets extended initialization requirements of modern ARM Cortex-M and RISC-V microcontrollers after power recovery |
| Negative-going VCC transient immunity | Rejects sub-10µs glitches up to 100mV below threshold - improves robustness in electrically noisy environments like motor control boards |
| Low 3μA supply current at 1.8V | Enables >10-year battery life in always-on sensor nodes using CR2032 cells (220mAh capacity) |
Applications
| Industrial PLC Power Sequencing | Automotive Body Control Module (BCM) |
|---|---|
|
Use Scenario: Supervises both 5V system rail and 3.3V microcontroller core voltage during cold-crank and load-dump events. IC Role / Device Role / Timing Role: Dual-threshold supervisor providing coordinated reset assertion across two independent power domains with 1200ms hold time. Use Value: Prevents partial initialization and firmware corruption by ensuring both rails stabilize before releasing reset to the MCU. |
Use Scenario: Monitors 12V battery-derived 5V supply and isolated 3.3V CAN transceiver rail in vehicle door modules. IC Role / Device Role / Timing Role: Resets microcontroller and CAN PHY simultaneously upon undervoltage, with RESET IN enabling rail-specific fault isolation. Use Value: Enables diagnostic distinction between main supply failure and isolated subsystem faults via separate RESET IN feedback path. |
| Medical Infusion Pump Controller | Smart Energy Meter with Dual ADC Rails |
|
Use Scenario: Ensures safe shutdown and restart during AC/DC adapter dropout or battery switchover in Class II medical devices. IC Role / Device Role / Timing Role: Active-high push-pull reset output directly interfaces with safety-critical MCU reset pin; 1200ms timeout accommodates analog front-end stabilization. Use Value: Meets IEC 62304 power-fail response requirements while eliminating external pullup components and associated failure modes. |
Use Scenario: Supervises 3.3V digital logic rail and 2.5V precision ADC reference rail in utility-grade meters exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Uses RESET IN to set exact 2.5V threshold via resistor divider; VCC monitors 3.3V rail with ±2.5% accuracy from -40°C to +125°C. Use Value: Maintains metrological integrity by preventing ADC sampling during unstable reference voltage conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388XS30D4-T | Same 3.00V threshold and pinout, but 1120ms VCC reset timeout (vs. 1200ms) | Suitable where slightly shorter reset hold time is acceptable; not compliant with designs requiring ≥1200ms minimum | Select MAX6388XS30D4-T only if timing margin analysis confirms 1120ms satisfies processor reset specification. |
| TLV809K30DBZR | Single-rail 3.0V supervisor; no RESET IN pin; open-drain active-low output; 200ms timeout | Lacks dual-monitoring capability and requires external pullup; insufficient timeout for most modern MCUs | Choose TLV809K30DBZR only for cost-sensitive, single-rail applications with legacy 8-bit microcontrollers requiring short reset pulses. |
Compared with MAX6388XS30D7-T, MAX6388XS30D4-T offers identical functionality with reduced timeout margin, while TLV809K30DBZR sacrifices dual monitoring, active-high drive, and long timeout - making MAX6388XS30D7-T uniquely suited for robust dual-rail embedded systems demanding guaranteed 1200ms reset hold and auxiliary voltage supervision.
Availability
MAX6388XS30D7-T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, automotive body control modules, medical infusion pump controllers, smart energy metering, and dual-voltage embedded systems requiring stable component supply with full automotive-grade traceability.
Supply support for MAX6388XS30D7-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 industrial, automotive, and computing applications, emphasizing reliability, low power, and integration.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy voltage supervision for microprocessor-based systems where deterministic reset behavior under brownout, cold-crank, and dual-rail fault conditions is mission-critical.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6388XS30D7-T?
The MAX6388XS30D7-T has a factory-set nominal VCC reset threshold of 3.00V, with guaranteed ±2.5% tolerance 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 "30" corresponds to 2.93V min / 3.00V nom / 3.08V max). The MAX6388XS30D7-T uses this threshold to assert reset when VCC falls below it.
Does MAX6388XS30D7-T support monitoring of a second voltage rail?
Yes, the MAX6388XS30D7-T includes a dedicated RESET IN pin that compares an external voltage to an internal +1.27V reference (±2.5% over temperature). By connecting a resistor divider to RESET IN, users can configure a custom reset threshold for a second power rail - a feature confirmed in the Pin Description and Applications Information sections of the datasheet for MAX6387/MAX6388/MAX6389 variants.
What is the function and timing of the RESET output on MAX6388XS30D7-T?
The MAX6388XS30D7-T features an active-high push-pull RESET output. It drives high when VCC falls below 3.00V or when RESET IN falls below +1.27V, and remains high for a minimum of 1200ms after both monitored voltages recover. This behavior is explicitly defined in the datasheet's Pin Description and Electrical Characteristics tables under "Reset Timeout Period" (suffix D7).
Is MAX6388XS30D7-T compatible with 1.8V or 2.5V supply systems?
Yes, the MAX6388XS30D7-T operates from 1.0V to 5.5V and guarantees correct reset output state down to VCC = 1V. Its supply current is specified at 3μA (typ) at +1.8V and 4μA (typ) at +2.5V, making it fully compatible with low-voltage microcontrollers and battery-powered systems - as verified in the Electrical Characteristics table under "VCC Supply Current".
What package type and footprint does MAX6388XS30D7-T use?
The MAX6388XS30D7-T is supplied in a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant, lead-free package is confirmed in the Ordering Information table and Package Information section of the datasheet, and is distinct from the 3-pin and 6-pin variants in the same family.
MAX6388XS30D7-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:
- 1.2s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS30D7-T FAQ
1.How can I place an order for MAX6388XS30D7-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS30D7-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 MAX6388XS30D7-T reliable?
The price and inventory of MAX6388XS30D7-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS30D7-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS30D7-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS30D7-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS30D7-T?
MAX6388XS30D7-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS30D7-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 MAX6388XS30D7-T?
For technical support, including MAX6388XS30D7-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS30D7-T requirements.
6.How does Aetrix verify that MAX6388XS30D7-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS30D7-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 MAX6388XS30D7-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS30D7-T?
All MAX6388XS30D7-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS30D7-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 MAX6388XS30D7-T part is unused and in its original packaging.
Return procedure for MAX6388XS30D7-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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