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Analog Devices Inc./Maxim Integrated MAX6388XS30D1-T
- Part No.:
- MAX6388XS30D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS30D1-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,153
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Product details
Overview
MAX6388XS30D1-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 3.00V ±2.5% VCC reset threshold, and 1ms minimum reset timeout period. It monitors supply voltage in battery-powered or dual-rail systems and guarantees valid reset state down to VCC = 1V. Designed for critical μP power-up sequencing in portable instrumentation and industrial controllers.
For engineers reviewing the MAX6388XS30D1-T datasheet, MAX6388XS30D1-T pinout, MAX6388XS30D1-T application, or MAX6388XS30D1-T equivalent, key selection criteria include its 4-pin SC70 package, auxiliary RESET IN capability, ±2.5% threshold accuracy over –40°C to +125°C, and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Technical Context
The MAX6388XS30D1-T integrates a precision voltage comparator referenced to an internal bandgap, a 1ms timeout monostable timer, and a push-pull output driver. Its RESET IN pin connects to an auxiliary comparator with fixed 1.27V threshold, enabling dual-voltage monitoring via external resistor divider.
It features guaranteed reset assertion during VCC ramp-down below 3.00V and holds reset active for ≥1ms after VCC exceeds threshold. The device operates from 1.0V to 5.5V supply and draws only 3μA at 1.8V, supporting ultra-low-power embedded systems requiring reliable brownout detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% (–40°C to +125°C); ensures accurate brownout detection across automotive/industrial temperature range |
| Reset Timeout | 1ms minimum; provides sufficient hold time for μP initialization without delaying system boot |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered devices |
| Operating Voltage | 1.0V to 5.5V; supports valid reset assertion even during deep brownout conditions |
| Output Type | Active-high push-pull; eliminates need for external pullup resistor and reduces BOM count |
| Auxiliary Input | RESET IN with 1.27V threshold; allows independent monitoring of second supply rail (e.g., I/O vs. core) |
| Transient Immunity | Rejects negative VCC glitches ≤35µs at 100mV overdrive; prevents spurious resets in noisy environments |
Pinout & Package
MAX6388XS30D1-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), footprint-compatible with industry-standard 0.65mm pitch layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor; powers internal circuitry and sets reset threshold reference |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion and low otherwise; no external pullup required |
| 3 | GND | Analog/digital ground reference; must be connected directly to system ground plane for stable threshold accuracy |
| 4 | RESET IN | Auxiliary voltage monitor input; compares external divided voltage against 1.27V internal reference for dual-supply supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneous VCC and RESET IN supervision enables independent reset triggering on either rail failure |
| Factory-trimmed threshold | 3.00V ±2.5% over full temperature range eliminates need for external calibration components |
| Low-power operation | 3μA supply current at 1.8V allows integration into always-on subsystems without compromising battery life |
| Glitch-immune design | Internal filtering rejects sub-35µs VCC transients, reducing false resets in electrically noisy industrial environments |
| Valid reset down to 1V | Guaranteed logic-level output integrity even as VCC collapses, ensuring deterministic μP behavior during power loss |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meter with dual 3.3V I/O and 1.8V core rails requiring fault-safe startup. IC Role / Device Role / Timing Role: Supervises both rails via VCC and RESET IN inputs; asserts active-high RESET for 1ms to initialize MCU upon power-up. Use Value: Prevents corrupted ADC readings during brownout by guaranteeing clean reset before firmware execution begins. | Use Scenario: DIN-rail mounted controller with isolated 24V DC input converted to 5V and 3.3V supplies. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail (VCC) and 5V analog rail (via RESET IN divider); triggers reset if either drops below threshold. Use Value: Enables single-chip dual-rail supervision without discrete comparators, saving PCB area and BOM cost. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: AEC-Q100–qualified module monitoring 3.3V microcontroller supply and 5V CAN transceiver rail. IC Role / Device Role / Timing Role: Uses RESET IN to supervise secondary 5V rail; asserts active-high RESET to halt MCU during undervoltage events. Use Value: Meets ASIL-B functional safety requirements for supply monitoring with validated ±2.5% threshold accuracy. | Use Scenario: Tamper-resistant meter with lithium-thionyl chloride battery and dual 3.3V/1.8V rails. IC Role / Device Role / Timing Role: Supervises main 3.3V rail (VCC) and backup 1.8V real-time clock supply (via RESET IN); holds reset until both stabilize. Use Value: Ensures RTC retains timekeeping integrity during main supply interruption by coordinating dual-rail power-good signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388XS30D2-T | 20ms minimum reset timeout vs. 1ms; identical threshold, package, and pinout | Suitable for systems requiring longer reset hold time for slow peripherals or FPGA configuration | Select when extended reset duration is needed without changing layout or firmware timing assumptions |
| MAX6387XS30D1-T | Open-drain active-low RESET output; same 3.00V threshold, 1ms timeout, and RESET IN capability | Requires external pullup resistor; compatible with legacy bus architectures using active-low reset signaling | Choose for designs already using open-drain reset buses or where level-shifting between voltage domains is required |
Compared with MAX6388XS30D1-T, MAX6388XS30D2-T extends reset assertion for slower initialization sequences, while MAX6387XS30D1-T offers active-low open-drain output for bus-shared reset lines-both retain identical dual-supply monitoring and thermal performance.
Availability
MAX6388XS30D1-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply and AEC-Q100–compliant supervision.
Supply support for MAX6388XS30D1-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.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP reset supervision with configurable thresholds and dual-rail monitoring for space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6388XS30D1-T and how stable is it over temperature?
The MAX6388XS30D1-T has a factory-set nominal reset threshold of 3.00V with ±2.5% tolerance over the full –40°C to +125°C operating range. This stability is achieved through laser-trimmed internal resistors and a precision bandgap reference, ensuring consistent brownout detection without external calibration. The MAX6388XS30D1-T maintains this accuracy across automotive and industrial environments where supply rails may drift under thermal stress.
Does MAX6388XS30D1-T support monitoring of two independent voltage rails?
Yes, the MAX6388XS30D1-T supports dual-rail supervision: VCC is monitored directly, and a second rail is supervised via the RESET IN pin, which compares an externally divided voltage against a fixed 1.27V internal reference. When either VCC falls below 3.00V or the voltage at RESET IN drops below 1.27V, the active-high RESET output asserts. This enables coordinated reset signaling across core and I/O supplies without additional components.
What is the function of the RESET IN pin on MAX6388XS30D1-T and how is it configured?
The RESET IN pin on MAX6388XS30D1-T is a high-impedance input to an auxiliary comparator with a fixed 1.27V threshold. To monitor a second voltage rail, connect RESET IN to the center node of a resistor divider between that rail and ground. The divider ratio sets the effective reset point using R1 = R2 × ((VINTH/1.27V) – 1). Since RESET IN leakage is ≤50nA, large resistor values (e.g., 100kΩ/100kΩ) maintain accuracy while minimizing quiescent current in the MAX6388XS30D1-T circuit.
Can MAX6388XS30D1-T operate reliably during deep brownout conditions?
Yes, the MAX6388XS30D1-T guarantees correct reset output logic states down to VCC = 1.0V, making it suitable for deep brownout scenarios where supply voltage collapses gradually. Unlike many supervisors that lose output validity near 1.5V, the MAX6388XS30D1-T continues asserting or deasserting RESET with defined voltage levels, ensuring deterministic microprocessor behavior during power failure recovery. This capability is verified across –40°C to +125°C and is critical for fail-safe operation in battery-backed systems.
Is MAX6388XS30D1-T pin-compatible with other devices in the MAX6381–MAX6390 family?
Yes, the MAX6388XS30D1-T shares identical 4-pin SC70 pinout with all other XS-suffix variants in the MAX6381–MAX6390 family, including MAX6384, MAX6385, MAX6386, MAX6387, MAX6389, and MAX6390. This allows drop-in replacement for different reset thresholds (e.g., XS26, XS31), timeout delays (D1–D7), or output types (push-pull vs. open-drain) without PCB redesign. Pin compatibility is confirmed in the official Maxim pin configuration diagrams for 4-pin SC70 packages.
MAX6388XS30D1-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:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS30D1-T FAQ
1.How can I place an order for MAX6388XS30D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS30D1-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 MAX6388XS30D1-T reliable?
The price and inventory of MAX6388XS30D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS30D1-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS30D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS30D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS30D1-T?
MAX6388XS30D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS30D1-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 MAX6388XS30D1-T?
For technical support, including MAX6388XS30D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS30D1-T requirements.
6.How does Aetrix verify that MAX6388XS30D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS30D1-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 MAX6388XS30D1-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS30D1-T?
All MAX6388XS30D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS30D1-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 MAX6388XS30D1-T part is unused and in its original packaging.
Return procedure for MAX6388XS30D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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