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Analog Devices Inc./Maxim Integrated MAX6388XS24D6-T
- Part No.:
- MAX6388XS24D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS24D6-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,615
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Product details
Overview
MAX6388XS24D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.40V ±2.5% VCC reset threshold, and 560ms minimum reset timeout period. It monitors single supply voltage (VCC) and includes auxiliary RESET IN input for dual-voltage monitoring, operating across -40°C to +125°C in 4-pin SC70 package. Used in battery-powered instrumentation and industrial controllers requiring reliable power-on reset.
For engineers reviewing the MAX6388XS24D6-T datasheet, MAX6388XS24D6-T pinout, MAX6388XS24D6-T application, or MAX6388XS24D6-T equivalent, key selection criteria include its 2.40V reset threshold accuracy over temperature, 560ms VCC reset timeout, auxiliary voltage monitoring capability via RESET IN, and guaranteed valid reset output down to VCC = 1V.
Technical Context
The MAX6388XS24D6-T implements a precision bandgap-based reset comparator with ±2.5% threshold accuracy over -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 560ms reset assertion window after VCC rises above 2.40V.
It features dual-monitoring architecture: primary VCC detection plus high-impedance RESET IN input referenced to 1.27V internal reference, enabling user-adjustable secondary voltage monitoring via external resistor divider. Reset asserts if either VCC < 2.40V or RESET IN < 1.27V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±2.5% over -40°C to +125°C - ensures stable brownout detection across automotive/industrial temperature range |
| VCC Reset Timeout | 560ms minimum - guarantees sufficient μP initialization time after power stabilization |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion down to near-dead-battery conditions |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor, reduces BOM count |
| Auxiliary Input | RESET IN with 1.27V reference - allows monitoring of second rail (e.g., I/O voltage) using external resistor divider |
| Reset Assertion Delay | 35µs max for VCC falling edge - provides immunity to sub-40µs negative transients |
Pinout & Package
MAX6388XS24D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), footprint-compatible with industry-standard 0.65mm pitch layouts. Thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor rail; powers internal circuitry and feeds reset comparator |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion, low otherwise; no external pullup required |
| 3 | GND | Analog/digital ground reference for all internal comparators and timing circuits |
| 4 | RESET IN | High-impedance auxiliary input; compared against 1.27V internal reference to monitor secondary voltage rail |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail monitoring capability | Simultaneous VCC and RESET IN monitoring enables independent supervision of core and I/O supplies in dual-voltage systems |
| Factory-trimmed reset threshold | 2.40V ±2.5% over full temperature range eliminates need for external calibration or trimming components |
| Low quiescent current | 3μA at 1.8V allows integration into always-on subsystems without compromising battery life |
| Negative transient immunity | Withstands VCC glitches ≤35µs duration when overdrive is ≥100mV - reduces false resets in noisy environments |
| Guaranteed operation down to VCC = 1V | Ensures deterministic reset behavior during deep brownout, critical for fail-safe embedded control |
Applications
| Industrial Sensor Node | Battery-Powered Data Logger |
|---|---|
Use Scenario: Remote environmental sensor node powered by Li-SOCl₂ battery with separate 3.3V I/O and 1.8V core rails. IC Role / Device Role / Timing Role: Supervises both VCC (1.8V core) and RESET IN (3.3V I/O via resistor divider) to guarantee synchronized reset of MCU and peripherals during brownout. Use Value: Prevents partial initialization where only one rail recovers, eliminating firmware lockup and data corruption. | Use Scenario: Portable water-quality meter with intermittent GPS transmission and long sleep cycles between measurements. IC Role / Device Role / Timing Role: Provides 560ms reset pulse to ensure complete MCU boot sequence after wake-up from ultra-low-power sleep mode. Use Value: Eliminates need for software watchdog kick during startup, reducing code complexity and flash wear. |
| Automotive Body Control Module | Medical Point-of-Care Device |
Use Scenario: BCM subassembly monitoring 5V supply and 3.3V CAN transceiver rail in passenger compartment. IC Role / Device Role / Timing Role: Uses RESET IN to supervise CAN transceiver voltage while VCC monitors main logic supply; asserts reset if either drops below threshold. Use Value: Ensures CAN communication stack initializes only after both power domains are stable, preventing bus arbitration errors. | Use Scenario: Handheld blood glucose analyzer with disposable test-strip interface and Bluetooth LE connectivity. IC Role / Device Role / Timing Role: Guarantees 560ms reset hold time after battery insertion or low-battery recovery to complete analog front-end calibration. Use Value: Meets IEC 62304 Class B requirement for deterministic power-on initialization under varying battery states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6387XS24D6-T | Same 2.40V threshold and 560ms timeout, but open-drain active-low RESET output requiring external pullup | Suitable where system-level reset bus is shared with other open-drain devices (e.g., I²C-style reset networks) | Select MAX6387XS24D6-T only if active-low polarity and open-drain drive are required for bus compatibility |
| TLV809E24DBZR | 2.42V threshold (±1%), 560ms timeout, active-low push-pull, no RESET IN input, 1.6V–6V VCC range | Lacks auxiliary voltage monitoring; suited for single-rail applications with tighter threshold tolerance | Choose TLV809E24DBZR when dual-supply monitoring is unnecessary and ±1% threshold accuracy is prioritized over auxiliary functionality |
Compared with MAX6388XS24D6-T, MAX6387XS24D6-T requires external pullup and active-low logic, while TLV809E24DBZR omits RESET IN entirely - making MAX6388XS24D6-T the only option supporting active-high push-pull reset with dual-rail supervision in this performance tier.
Availability
MAX6388XS24D6-T is available at Aetrix Electronics and suitable for industrial sensor nodes, battery-powered data loggers, automotive body control modules, and medical point-of-care devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6388XS24D6-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 low power, high reliability, and AEC-Q100 qualification.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits optimized for battery-constrained and thermally demanding environments, with emphasis on guaranteed operation down to 1V and robust transient immunity.
FAQ
What is the exact reset threshold voltage of the MAX6388XS24D6-T and how does it vary with temperature?
The MAX6388XS24D6-T has a factory-set nominal reset threshold of 2.40V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This means the actual threshold remains between 2.34V and 2.46V across temperature extremes. The device exhibits a tempco of 60ppm/°C, contributing minimally to drift within the specified tolerance band. This precision eliminates need for external calibration in MAX6388XS24D6-T designs.
Does the MAX6388XS24D6-T support monitoring of a second voltage rail, and how is it implemented?
Yes, the MAX6388XS24D6-T supports dual-voltage monitoring via its dedicated RESET IN pin, which connects to an internal 1.27V reference comparator. To monitor a second rail (e.g., 3.3V I/O supply), an external resistor divider scales the target voltage to match the 1.27V threshold. Reset asserts if either VCC falls below 2.40V or the divided RESET IN voltage drops below 1.27V. This feature is confirmed in the Pin Description and Typical Operating Circuit sections of the MAX6388XS24D6-T datasheet.
What is the function of the RESET output on the MAX6388XS24D6-T, and what drive capability does it provide?
The RESET output of the MAX6388XS24D6-T is an active-high push-pull driver, meaning it actively drives high during reset assertion and low otherwise - no external pullup resistor is needed. It sources up to 800µA at VCC ≥ 4.5V and sinks up to 3.2mA, ensuring robust interfacing with standard CMOS inputs. The output remains valid down to VCC = 1V, guaranteeing deterministic behavior even during deep brownout conditions in the MAX6388XS24D6-T.
How does the MAX6388XS24D6-T handle short negative transients on the VCC line?
The MAX6388XS24D6-T provides built-in immunity to short negative-going VCC transients, rejecting pulses ≤35µs in duration when the overdrive (VTH – VCC) is ≥100mV. This is achieved through internal filtering and comparator hysteresis. For enhanced immunity, a 0.1µF ceramic capacitor placed close to the VCC pin is recommended. This transient rejection capability prevents spurious resets in electrically noisy environments where the MAX6388XS24D6-T is deployed.
Is the MAX6388XS24D6-T qualified for automotive applications, and what package options are available?
The MAX6388XS24D6-T is offered in a lead-free, RoHS-compliant 4-pin SC70 package (outline 21-0098) and is rated for -40°C to +125°C operation. While the base part is not explicitly AEC-Q100 qualified, the MAX6388XS24D6-T datasheet references /V automotive-grade variants in the Ordering Information table, indicating qualification path availability. Customers requiring automotive compliance should specify the /V suffix version (e.g., MAX6388XS24D6/V+T) for certified parts.
MAX6388XS24D6-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:
- 2.4V, 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
MAX6388XS24D6-T FAQ
1.How can I place an order for MAX6388XS24D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS24D6-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 MAX6388XS24D6-T reliable?
The price and inventory of MAX6388XS24D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS24D6-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS24D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS24D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS24D6-T?
MAX6388XS24D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS24D6-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 MAX6388XS24D6-T?
For technical support, including MAX6388XS24D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS24D6-T requirements.
6.How does Aetrix verify that MAX6388XS24D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS24D6-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 MAX6388XS24D6-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS24D6-T?
All MAX6388XS24D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS24D6-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 MAX6388XS24D6-T part is unused and in its original packaging.
Return procedure for MAX6388XS24D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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