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Analog Devices Inc./Maxim Integrated MAX6388XS17D4-T
- Part No.:
- MAX6388XS17D4-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS17D4-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,981
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Product details
Overview
MAX6388XS17D4-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.67V VCC reset threshold (±2.5% over -40°C to +125°C), 1120ms minimum VCC 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, serving in battery-powered instrumentation and embedded controllers requiring reliable power-on reset.
For engineers reviewing the MAX6388XS17D4-T datasheet, MAX6388XS17D4-T pinout, MAX6388XS17D4-T application, or MAX6388XS17D4-T equivalent, key selection criteria include its 4-pin SC70 package, dual-supply monitoring capability via RESET IN, guaranteed reset validity down to VCC = 1V, and automotive-grade AEC-Q100 qualification (indicated by /V suffix in related variants).
Technical Context
The MAX6388XS17D4-T integrates a precision voltage comparator for VCC monitoring against a 1.67V threshold and a separate high-impedance RESET IN comparator referenced to 1.27V, enabling user-defined secondary voltage detection via external resistor divider. Its internal timer guarantees 1120ms minimum reset assertion after VCC recovery.
It features an active-high push-pull RESET output that drives high during fault conditions (VCC < 1.67V or RESET IN < 1.27V) and remains asserted for the full timeout period. The device includes negative-going VCC transient immunity and operates across -40°C to +125°C with ±2.5% threshold accuracy over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.67V (nominal), ±2.5% over -40°C to +125°C - ensures stable brownout detection across industrial temperature range |
| RESET Timeout Period | 1120ms (min) - provides sufficient hold time for slow-ramping power supplies or firmware initialization |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered portable devices |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout down to 1V supply |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and simplifies interface to μP reset inputs |
| Auxiliary Input | RESET IN comparator with 1.27V reference - allows monitoring of second supply rail (e.g., I/O voltage) using external resistor divider |
| Package | 4-pin SC70 (X4+1 outline) - compact footprint compatible with space-constrained PCB layouts |
Pinout & Package
MAX6388XS17D4-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. Pin 1 is marked with a dot; pin numbering follows standard SC70 convention (counterclockwise from mark).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - powers internal circuitry and triggers reset when falling below 1.67V |
| 2 | RESET | Active-high push-pull output - drives high during reset condition; sinks current when deasserted; no external pullup required |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane for accurate threshold sensing |
| 4 | RESET IN | Auxiliary voltage monitor input - high-impedance node compared to 1.27V internal reference; used to set secondary reset threshold via resistor divider |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneous VCC and RESET IN supervision enables independent reset control for core and I/O rails in dual-voltage systems |
| Low-power operation | 3μA supply current at 1.8V allows integration into always-on battery-backed subsystems without significant drain |
| Guaranteed reset validity | RESET output state remains valid down to VCC = 1.0V - ensures deterministic behavior during deep undervoltage events |
| Negative transient immunity | Immune to short-duration VCC glitches (e.g., <1µs at 100mV overdrive) - prevents spurious resets in noisy environments |
| Factory-trimmed precision | ±2.5% reset threshold accuracy over full temperature range eliminates need for external calibration or trimming |
Applications
| Industrial Controllers | Battery-Powered Instrumentation |
|---|---|
Use Scenario: PLC I/O modules powered by isolated 3.3V and 5V rails with independent brownout risks. IC Role / Device Role / Timing Role: Monitors both supplies via VCC and RESET IN; asserts active-high RESET to halt CPU until both rails stabilize. Use Value: Prevents firmware corruption during partial power loss by enforcing synchronized restart only after both voltages exceed thresholds. | Use Scenario: Handheld multimeter with 3.0V main supply and 1.8V sensor interface rail. IC Role / Device Role / Timing Role: Uses VCC for main supply monitoring and RESET IN (via 100kΩ/56.2kΩ divider) to detect 1.8V rail collapse. Use Value: Enables single-chip dual-rail supervision without external comparators, reducing BOM count and board area. |
| Dual-Voltage Microcontroller Systems | Automotive Body Electronics |
Use Scenario: Automotive MCU with 5.0V analog front-end and 1.2V core supply, where VCORE dropout must trigger immediate reset. IC Role / Device Role / Timing Role: Configures RESET IN to monitor VCORE via resistor divider; VCC monitors 5.0V rail; asserts RESET on either fault. Use Value: Provides fail-safe reset coordination between domains, meeting ASIL-B functional safety requirements for non-safety-critical modules. | Use Scenario: Door module with 12V-to-5V DC/DC and 5V-to-3.3V LDO, subject to load-dump transients. IC Role / Device Role / Timing Role: Leverages negative-going VCC transient immunity to avoid false resets during ISO 7637-2 pulse 1/2a events. Use Value: Maintains system reliability under harsh electrical environments without adding TVS or RC filtering on VCC line. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388XS17D7-T | Same 1.67V threshold and 4-pin SC70 package, but 1200ms VCC reset timeout (vs. 1120ms) | Suitable where longer reset hold time is required for slower peripherals or extended boot sequences | Select D7 variant if system timing margin requires >1120ms guaranteed assertion |
| MAX6387XS17D4-T | Identical threshold (1.67V), timeout (1120ms), and package, but open-drain active-low RESET output | Requires external pullup resistor; compatible with legacy μP reset inputs expecting active-low signaling | Choose when interfacing to older MCUs with active-low reset pins or shared reset buses |
Compared with MAX6388XS17D4-T, the D7 variant extends reset duration by 80ms for tighter timing margins, while MAX6387XS17D4-T offers identical supervision logic but different output polarity and drive architecture-requiring layout changes for pullup and signal inversion.
Availability
MAX6388XS17D4-T is available at Aetrix Electronics and suitable for industrial controllers, battery-powered instrumentation, dual-voltage microcontroller systems, and automotive body electronics requiring stable component supply and long-term lifecycle support.
Supply support for MAX6388XS17D4-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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers ultra-low-power, high-accuracy reset supervision for resource-constrained embedded systems where supply stability and deterministic startup behavior are critical.
FAQ
What is the exact reset threshold voltage of the MAX6388XS17D4-T?
The MAX6388XS17D4-T has a factory-set nominal VCC reset threshold of 1.67V, with guaranteed accuracy 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 "17" corresponds to 1.62V min / 1.67V nom / 1.71V max). The MAX6388XS17D4-T uses this threshold to initiate reset when VCC falls below it.
Does the MAX6388XS17D4-T support monitoring of a second voltage rail?
Yes, the MAX6388XS17D4-T includes a dedicated RESET IN input that connects to an internal 1.27V comparator. By applying a resistor divider to this pin, users can configure a custom reset threshold for a second supply rail (e.g., I/O voltage or sensor bias). This dual-monitoring capability is explicitly documented in the Pin Description and Applications Information sections for MAX6388XS17D4-T.
What is the function of the RESET output on the MAX6388XS17D4-T?
On the MAX6388XS17D4-T, the RESET output is an active-high push-pull driver. It asserts high when VCC drops below 1.67V or when the voltage at RESET IN falls below 1.27V, and remains high for the full 1120ms timeout period after the fault clears. This eliminates the need for an external pullup resistor and directly interfaces with microprocessors requiring active-high reset signals.
What package type and pin count does the MAX6388XS17D4-T use?
The MAX6388XS17D4-T is packaged in a 4-pin SC70 (surface-mount) case, identified by outline number 21-0098 and land pattern 90-0187. Its pinout is VCC (pin 1), RESET (pin 2), GND (pin 3), and RESET IN (pin 4). This compact 2.0mm × 2.1mm footprint is confirmed in the Ordering Information and Pin Configurations sections specific to MAX6388XS17D4-T.
Is the MAX6388XS17D4-T qualified for automotive applications?
The MAX6388XS17D4-T itself is not automotive-qualified; however, the MAX6388XS17D4/V+T variant (with /V suffix) is AEC-Q100 qualified for automotive use. The base part number MAX6388XS17D4-T carries the "+T" RoHS-compliant marking but lacks the /V trim indicating automotive qualification. Engineers requiring automotive grade must specify the /V version explicitly.
MAX6388XS17D4-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:
- 1.67V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1.12s Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS17D4-T FAQ
1.How can I place an order for MAX6388XS17D4-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS17D4-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 MAX6388XS17D4-T reliable?
The price and inventory of MAX6388XS17D4-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS17D4-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS17D4-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS17D4-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS17D4-T?
MAX6388XS17D4-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS17D4-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 MAX6388XS17D4-T?
For technical support, including MAX6388XS17D4-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS17D4-T requirements.
6.How does Aetrix verify that MAX6388XS17D4-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS17D4-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 MAX6388XS17D4-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS17D4-T?
All MAX6388XS17D4-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS17D4-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 MAX6388XS17D4-T part is unused and in its original packaging.
Return procedure for MAX6388XS17D4-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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