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Analog Devices Inc./Maxim Integrated MAX6388XS27D6-T
- Part No.:
- MAX6388XS27D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS27D6-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,081
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Product details
Overview
MAX6388XS27D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.70V VCC reset threshold (±2.5% over –40°C to +125°C), 560ms minimum 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 MAX6388XS27D6-T datasheet, MAX6388XS27D6-T pinout, MAX6388XS27D6-T application, or MAX6388XS27D6-T equivalent, key selection considerations include its 4-pin SC70 package, guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over automotive temperature range, and support for external voltage-divider–based secondary supply monitoring via RESET IN.
Technical Context
The MAX6388XS27D6-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.70V threshold, asserting its active-high RESET output when VCC falls below that level. An internal timer enforces a minimum 560ms reset assertion after VCC recovers above threshold.
Its auxiliary RESET IN input compares an external voltage to a stable +1.27V internal reference, enabling independent monitoring of a second supply rail. Reset asserts if either VCC < 2.70V or RESET IN < 1.27V, with typical RESET IN to RESET delay of 4.5μs and leakage current ≤ ±1nA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.70V (nominal), ±2.5% tolerance over –40°C to +125°C - ensures consistent brownout detection across automotive temperature range |
| Reset Timeout Period | 560ms (min) - guarantees sufficient processor hold time during supply recovery |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year battery life in portable equipment |
| RESET Output Type | Active-high push-pull - drives high without external pullup, compatible with standard μP reset inputs |
| RESET IN Threshold | +1.27V (nominal), ±2.5% over temperature - supports accurate secondary supply monitoring using resistor divider |
| Operating Voltage Range | 1.0V to 5.5V - valid reset assertion guaranteed down to VCC = 1V, critical for deep brownout immunity |
| Package | 4-pin SC70 (X4+1 outline) - 1.6mm × 1.6mm footprint, suitable for space-constrained PCB layouts |
Pinout & Package
MAX6388XS27D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), offering compact size and thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary reset threshold monitor - must be decoupled with 0.1μF capacitor near pin for transient immunity |
| 2 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted; no external pullup required |
| 3 | RESET IN | Auxiliary voltage monitor input - high-impedance node referenced to +1.27V; connects to resistor divider for user-defined secondary threshold |
| 4 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring capability | Simultaneous VCC (2.70V) and RESET IN (+1.27V reference) comparators enable robust power sequencing in dual-rail systems |
| Automotive-grade temperature operation | –40°C to +125°C operating range with ±2.5% threshold accuracy - qualified per AEC-Q100 for under-hood applications |
| Negative-going VCC transient immunity | Rejects short-duration supply glitches (e.g., <10μs at 100mV overdrive) without false reset assertion |
| Ultra-low quiescent current | 3μA at 1.8V - minimizes standby power in battery-powered IoT sensors and wearables |
| Valid reset output down to VCC = 1V | Ensures deterministic μP reset state even during severe brownout conditions before full power collapse |
Applications
| Industrial PLC Power Monitoring | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Monitors 3.3V I/O supply and 1.2V core supply in programmable logic controller CPU board during cold cranking. IC Role / Device Role / Timing Role: Dual-threshold supervisor providing coordinated reset to ARM Cortex-M7 and FPGA upon either supply droop. Use Value: Prevents firmware corruption by enforcing 560ms reset hold time while maintaining valid logic levels down to 1.0V VCC. |
Use Scenario: Supervises 5V infotainment domain controller and 3.3V CAN transceiver supply in vehicle body electronics. IC Role / Device Role / Timing Role: Resets microcontroller and isolates CAN bus during battery voltage sag below 2.70V or transceiver rail failure detected via RESET IN. Use Value: Enables fail-safe shutdown with AEC-Q100–qualified timing accuracy and ±2.5% threshold stability over full automotive temperature range. |
| Portable Medical Sensor Hub | Battery-Powered Smart Meter |
Use Scenario: Ensures reliable startup and brownout recovery in wearable ECG sensor using coin-cell battery and dual LDO outputs. IC Role / Device Role / Timing Role: Active-high push-pull RESET directly interfaces with ultra-low-power MCU reset pin without pullup resistor. Use Value: 3μA supply current extends battery life beyond 5 years; RESET IN monitors backup rail to trigger graceful data save before shutdown. |
Use Scenario: Provides tamper-resistant power supervision in AMI smart meter with main 3.3V rail and isolated 5V RS-485 interface supply. IC Role / Device Role / Timing Role: Detects undervoltage on both rails and asserts synchronized reset to metering SoC and communication IC. Use Value: 560ms timeout prevents spurious resets during brief grid dips; SC70 package saves PCB area in sealed meter housing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT27D6-T | Same electrical specs but in 6-pin μDFN (L611+1) instead of 4-pin SC70 - larger footprint, higher thermal resistance (θJA = 477°C/W) | Preferred where board layout allows larger package and requires better thermal dissipation margin | Select MAX6388LT27D6-T only if μDFN footprint compatibility or higher power handling is required; otherwise SC70 offers superior space efficiency. |
| TPS3808G33DBVR | TI part with 3.3V threshold, 200ms timeout, open-drain output, and no RESET IN input - lacks dual-monitoring capability and active-high push-pull drive | Suitable for single-rail 3.3V systems without auxiliary monitoring needs; requires external pullup resistor | Choose TPS3808G33DBVR only for cost-sensitive 3.3V-only designs where RESET IN and active-high drive are unnecessary. |
Compared with MAX6388XS27D6-T, the LT variant trades PCB area for thermal margin, while the TPS3808G33DBVR sacrifices dual-supply monitoring and push-pull convenience for lower unit cost in simpler applications.
Availability
MAX6388XS27D6-T is available at Aetrix Electronics and suitable for industrial PLC power monitoring, automotive body control modules, portable medical sensor hubs, and battery-powered smart meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6388XS27D6-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 AEC-Q100 qualification.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy reset supervision for microprocessors in harsh environments, with variants optimized for single/dual supply monitoring, manual reset, and automotive temperature compliance.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6388XS27D6-T?
The MAX6388XS27D6-T has a factory-set nominal VCC reset threshold of 2.70V, with guaranteed tolerance 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 "27"), and applies specifically to the VCC comparator-not the RESET IN input, which references +1.27V.
Does MAX6388XS27D6-T support monitoring a second voltage rail, and how is it implemented?
Yes, MAX6388XS27D6-T supports dual-voltage monitoring via its dedicated RESET IN pin. This input compares an externally applied voltage to an internal +1.27V reference; reset asserts if either VCC drops below 2.70V or RESET IN falls below +1.27V. Users implement secondary threshold setting using a resistor divider network connected to RESET IN, as detailed in Figure 1 of the datasheet.
What is the function and timing behavior of the RESET output on MAX6388XS27D6-T?
The MAX6388XS27D6-T features an active-high push-pull RESET output. It drives high when VCC falls below 2.70V or RESET IN falls below +1.27V, and remains high for a minimum of 560ms after both monitored voltages recover. The output is guaranteed valid down to VCC = 1V, eliminating need for external pullup resistors and ensuring deterministic reset state during deep brownout.
Is MAX6388XS27D6-T qualified for automotive applications, and what evidence supports this?
Yes, MAX6388XS27D6-T is AEC-Q100 qualified, as explicitly stated in the Features section and Ordering Information table. Its –40°C to +125°C operating range, ±2.5% reset threshold accuracy over that range, and qualification documentation referenced in the datasheet confirm suitability for automotive body electronics, infotainment, and powertrain-adjacent modules.
What package type and footprint does MAX6388XS27D6-T use, and are land patterns available?
MAX6388XS27D6-T uses a 4-pin SC70 package (outline number 21-0098, package code X4+1). Its land pattern (footprint) is documented as number 90-0187 on Maxim's packaging website. This 1.6mm × 1.6mm RoHS-compliant package is optimized for high-density PCB layouts and supports reflow soldering at +260°C peak temperature.
MAX6388XS27D6-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:
- 2.7V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS27D6-T FAQ
1.How can I place an order for MAX6388XS27D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS27D6-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 MAX6388XS27D6-T reliable?
The price and inventory of MAX6388XS27D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS27D6-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS27D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS27D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS27D6-T?
MAX6388XS27D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS27D6-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 MAX6388XS27D6-T?
For technical support, including MAX6388XS27D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS27D6-T requirements.
6.How does Aetrix verify that MAX6388XS27D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS27D6-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 MAX6388XS27D6-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS27D6-T?
All MAX6388XS27D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS27D6-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 MAX6388XS27D6-T part is unused and in its original packaging.
Return procedure for MAX6388XS27D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS27D6-T Tags
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MIC826SYMT-TR
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