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Analog Devices Inc./Maxim Integrated MAX6388XS30D3-T
- Part No.:
- MAX6388XS30D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS30D3-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,267
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Product details
Overview
MAX6388XS30D3-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), 140ms minimum reset timeout, and auxiliary RESET IN input for dual-voltage monitoring. It consumes only 3μA at +1.8V and guarantees valid reset state down to VCC = 1V, used in battery-powered controllers and dual-rail embedded systems.
For engineers reviewing the MAX6388XS30D3-T datasheet, MAX6388XS30D3-T pinout, MAX6388XS30D3-T application, or MAX6388XS30D3-T equivalent, key selection criteria include its 3.00V threshold accuracy, 140ms VCC reset timeout, 4-pin SC70 package, auxiliary voltage monitoring capability, and automotive-grade AEC-Q100 qualification (denoted by /V suffix - though this part lacks /V, it shares full temp range −40°C to +125°C).
Technical Context
The MAX6388XS30D3-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 3.00V threshold while simultaneously accepting an external voltage via RESET IN (compared to internal 1.27V reference). Its reset assertion logic triggers on either VCC drop below 3.00V or RESET IN drop below 1.27V, with independent timing control.
It features an active-high push-pull RESET output that transitions high during fault conditions and remains asserted for ≥140ms after recovery. The device includes negative-going VCC transient immunity up to 100mV overdrive for ≤35µs, and supports reliable operation down to VCC = 1V without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% (−40°C to +125°C); ensures reliable brownout detection for 3.3V I/O rails |
| Reset Timeout | 140ms min (D3 suffix); holds processor in reset long enough for power stabilization post-brownout |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT sensors |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup resistor in 3.3V/5V logic interfaces |
| Auxiliary Input | RESET IN pin with 1.27V internal reference; allows monitoring of secondary supply (e.g., 1.8V core) via resistor divider |
| Operating Temp | −40°C to +125°C; qualified for under-hood automotive and industrial control environments |
| VCC Range | 1.0V to 5.5V; supports valid reset assertion even during deep undervoltage (e.g., battery sag) |
Pinout & Package
MAX6388XS30D3-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), footprint-compatible with industry-standard 4-pin supervisory ICs and optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor; powers internal circuitry and sets reset threshold reference point |
| 2 | RESET | Active-high push-pull output; drives high during reset condition and low otherwise; sinks/source capable per spec |
| 3 | RESET IN | High-impedance auxiliary input; compared to internal 1.27V reference to enable dual-supply monitoring |
| 4 | GND | Analog/digital ground reference; must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneous VCC (3.00V) and RESET IN (1.27V reference) comparators enable independent tracking of I/O and core rails |
| Low-power operation | 3μA ICC at +1.8V allows integration into always-on battery-backed subsystems without measurable drain |
| Guaranteed reset validity | RESET output remains logic-valid down to VCC = 1V-no external pulldown required for safe boot sequencing |
| Negative transient immunity | Rejects VCC glitches ≤35µs wide with ≥100mV undershoot, reducing false resets in noisy power environments |
| Factory-trimmed accuracy | ±2.5% threshold tolerance over full temperature range eliminates need for external calibration or margining |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Monitors both 3.3V I/O rail and 1.2V microcontroller core supply in programmable logic controller units deployed in factory automation. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting active-high RESET to halt firmware execution during simultaneous rail collapse or independent undervoltage events. Use Value: Prevents corrupted register writes and flash corruption during brownout by enforcing ≥140ms reset hold time after either rail recovers. | Use Scenario: Embedded in body control unit (BCU) to supervise 5V sensor bus and 3.3V MCU domain, with RESET IN configured for 2.5V LIN transceiver supply. IC Role / Device Role / Timing Role: Fault-detection node triggering system-wide reset when any monitored voltage falls below its threshold, meeting ISO 16750-2 pulse immunity requirements. Use Value: Enables fail-safe shutdown before CAN communication loss or actuator misfire due to partial power failure. |
| Portable Medical Sensor Hub | Dual-Rail FPGA Configuration System |
Use Scenario: Powers from single Li-ion cell (2.7–4.2V) and monitors 3.0V LDO output feeding BLE radio and analog front-end in wearable ECG patch. IC Role / Device Role / Timing Role: Primary reset generator with auxiliary input tied to 1.8V ADC supply; asserts RESET if either rail drops below threshold. Use Value: Ensures deterministic startup and prevents analog data corruption by holding FPGA and radio in reset until both supplies stabilize. | Use Scenario: Used in FPGA-based test equipment where 1.2V core and 3.3V I/O banks require coordinated power sequencing and fault detection. IC Role / Device Role / Timing Role: Supervises 3.3V bank directly and 1.2V core via resistor-divider on RESET IN; generates unified active-high reset signal. Use Value: Eliminates need for discrete comparators and timers, reducing BOM count while guaranteeing synchronized reset across voltage domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS30D3-T | Same 3.00V threshold, 140ms timeout, and 4-pin SC70 package-but includes manual reset (MR) input instead of RESET IN | Suitable where operator-initiated reset is required; not suitable for dual-supply monitoring | Select MAX6385XS30D3-T only if MR functionality is needed and auxiliary voltage monitoring is unnecessary |
| TLV809E30DBZR | 3.0V threshold, 140ms timeout, SOT-23-3 package; no auxiliary input; ±2% accuracy; 0.5μA quiescent current | Lacks RESET IN capability and operates over narrower temperature range (−40°C to +125°C same, but not AEC-Q100 qualified) | Choose TLV809E30DBZR for cost-sensitive, single-rail consumer applications where ultra-low IQ dominates design priority |
Compared with MAX6385XS30D3-T, MAX6388XS30D3-T trades manual reset for dual-supply monitoring-making it optimal for systems requiring fault detection across multiple rails. Against TLV809E30DBZR, it adds RESET IN functionality, wider operating margin, and automotive-grade reliability at higher IQ cost.
Availability
MAX6388XS30D3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensor hubs, and dual-rail FPGA configuration systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6388XS30D3-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/dual low-voltage supervisory circuits targeting space- and power-constrained embedded systems requiring guaranteed reset behavior across harsh thermal and electrical environments.
FAQ
What is the exact reset threshold voltage of the MAX6388XS30D3-T and how stable is it over temperature?
The MAX6388XS30D3-T has a factory-set nominal reset threshold of 3.00V, with guaranteed accuracy of ±2.5% over the full operating temperature range of −40°C to +125°C. This stability is achieved using a trimmed bandgap reference and low-drift comparator architecture, ensuring consistent brownout detection without external calibration. The MAX6388XS30D3-T maintains this tolerance across all specified conditions, making it suitable for mission-critical power monitoring.
Does the MAX6388XS30D3-T support monitoring of a second voltage rail, and how is it implemented?
Yes, the MAX6388XS30D3-T supports dual-voltage monitoring via its dedicated RESET IN pin, which compares an external voltage to an internal 1.27V reference. To monitor a second rail (e.g., 1.8V), connect a resistor divider between that rail and GND, with the midpoint fed to RESET IN. The MAX6388XS30D3-T asserts reset if either VCC drops below 3.00V or the divided voltage at RESET IN falls below 1.27V-enabling coordinated fault response across two independent supplies.
What is the function of the RESET output on the MAX6388XS30D3-T, and what are its drive capabilities?
The RESET output of the MAX6388XS30D3-T is an active-high push-pull driver, meaning it actively drives high during reset and low otherwise-eliminating the need for an external pullup resistor. It sources up to 800µA at VCC ≥ 4.5V and sinks up to 3.2mA when asserted, supporting direct interfacing with 3.3V and 5V logic families. The MAX6388XS30D3-T guarantees correct logic state down to VCC = 1V, ensuring robust boot sequencing even during severe undervoltage.
How does the 140ms reset timeout (D3 suffix) affect system behavior during power-up and brownout recovery?
The 140ms minimum reset timeout of the MAX6388XS30D3-T ensures the microprocessor remains held in reset for at least 140ms after VCC rises above 3.00V or after RESET IN recovers-providing sufficient time for power supplies, clocks, and memory to stabilize before firmware execution resumes. This prevents erratic startup, flash corruption, or peripheral lockup. The MAX6388XS30D3-T implements this delay using a precision RC oscillator, maintaining timing accuracy across temperature and voltage.
Is the MAX6388XS30D3-T qualified for automotive applications, and what packaging options are available?
The MAX6388XS30D3-T is offered in a RoHS-compliant 4-pin SC70 package (outline 21-0098) and operates over −40°C to +125°C, matching automotive ambient requirements-but it does not carry the /V suffix indicating formal AEC-Q100 qualification. For certified automotive use, designers should select /V-qualified variants such as MAX6388XS30D3/V+T. The MAX6388XS30D3-T itself is intended for industrial and high-reliability commercial applications where extended temperature and robustness are required but formal automotive certification is not mandated.
MAX6388XS30D3-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:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS30D3-T FAQ
1.How can I place an order for MAX6388XS30D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS30D3-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 MAX6388XS30D3-T reliable?
The price and inventory of MAX6388XS30D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS30D3-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS30D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS30D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS30D3-T?
MAX6388XS30D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS30D3-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 MAX6388XS30D3-T?
For technical support, including MAX6388XS30D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS30D3-T requirements.
6.How does Aetrix verify that MAX6388XS30D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS30D3-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 MAX6388XS30D3-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS30D3-T?
All MAX6388XS30D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS30D3-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 MAX6388XS30D3-T part is unused and in its original packaging.
Return procedure for MAX6388XS30D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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