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Analog Devices Inc./Maxim Integrated MAX6388XS23D1-T
- Part No.:
- MAX6388XS23D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS23D1-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,223
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Product details
Overview
MAX6388XS23D1-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.31V VCC reset threshold (±2.5% over -40°C to +125°C), 1ms 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 instrumentation and dual-rail embedded systems.
For engineers reviewing the MAX6388XS23D1-T datasheet, MAX6388XS23D1-T pinout, MAX6388XS23D1-T application, or MAX6388XS23D1-T equivalent, key selection criteria include its 2.31V threshold accuracy, 1ms reset delay, 4-pin SC70 package, auxiliary voltage monitoring capability, and compatibility with dual-supply microcontroller power domains.
Technical Context
The MAX6388XS23D1-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.31V threshold while simultaneously accepting an external voltage via RESET IN, compared to an internal 1.27V reference. Its reset assertion logic triggers on either VCC falling below 2.31V or RESET IN falling below 1.27V.
A dedicated 1ms timeout timer ensures reset remains asserted after recovery, and the active-high push-pull output drives high during reset-compatible with μP reset inputs requiring active-high assertion. The device operates across -40°C to +125°C with guaranteed functionality down to VCC = 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.31V ±2.5% (–40°C to +125°C); sets precise brownout detection point for primary supply |
| RESET Timeout Period | 1ms minimum; ensures sufficient reset hold time for reliable microprocessor initialization |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered portable instruments |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup and directly interfaces μP reset pins |
| Auxiliary Input | RESET IN with 1.27V internal reference; supports user-configurable secondary voltage monitoring via resistor divider |
| Operating Temperature | –40°C to +125°C; qualified for industrial and automotive under-hood applications |
| VCC Range | 1.0V to 5.5V; maintains functional reset assertion even during deep brownout conditions |
Pinout & Package
MAX6388XS23D1-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), footprint-compatible with standard SC70 land pattern 90-0187. Thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor rail; powers internal circuitry and sets reset threshold reference |
| 2 | RESET | Active-high push-pull output; asserts high during reset condition and deasserts low upon recovery |
| 3 | GND | Analog/digital ground reference; must be connected to system ground plane for stable comparator operation |
| 4 | RESET IN | Auxiliary voltage monitor input; compared to internal 1.27V reference to enable dual-supply reset supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage supervision | Simultaneous monitoring of VCC and external rail via RESET IN enables robust dual-rail system reset coordination |
| Factory-trimmed threshold | 2.31V ±2.5% over full temperature range eliminates need for external calibration or trimming components |
| Ultra-low quiescent current | 3μA at 1.8V allows integration into always-on subsystems without compromising battery life |
| Valid reset down to 1V VCC | Ensures deterministic reset behavior during severe brownout, preventing undefined μP states |
| Negative transient immunity | Immune to short-duration VCC glitches (e.g., <1µs at 100mV overdrive), reducing false resets in noisy environments |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered handheld glucose meters and pulse oximeters requiring long shelf life and reliable power-on reset. IC Role / Device Role / Timing Role: Supervises main 3.3V logic rail and 1.8V sensor interface rail via RESET IN; asserts active-high reset for 1ms during startup/brownout. Use Value: 3μA supply current extends battery life beyond 5 years; dual-rail monitoring prevents firmware lockup from partial rail failure. | Use Scenario: DIN-rail mounted programmable logic controller modules operating in harsh factory environments with fluctuating 24V DC supplies. IC Role / Device Role / Timing Role: Monitors 5V logic supply and isolated 3.3V fieldbus interface rail; provides temperature-stable 2.31V threshold and 1ms reset hold. Use Value: ±2.5% threshold accuracy over –40°C to +125°C ensures consistent reset behavior across ambient extremes. |
| Automotive Body Control Units | Dual-Voltage FPGA Configurations |
Use Scenario: Under-hood body control modules powered by 12V-to-5V/3.3V DC-DC converters with strict AEC-Q100 compliance requirements. IC Role / Device Role / Timing Role: Supervises 5V MCU domain and 3.3V CAN transceiver rail using RESET IN; delivers active-high reset compatible with Infineon/AURIX MCUs. Use Value: AEC-Q100 qualified variant available; 1ms timeout meets ISO 16750-2 cold-cranking reset timing requirements. | Use Scenario: High-reliability FPGA-based test equipment where configuration memory requires simultaneous reset of core (1.2V) and I/O (3.3V) rails. IC Role / Device Role / Timing Role: Uses RESET IN to monitor 3.3V I/O rail while VCC monitors 1.2V core rail; asserts unified active-high reset signal to FPGA PROG_B pin. Use Value: Eliminates need for discrete OR-gate reset combiners; single-chip dual-rail supervision reduces BOM count and layout area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6387XS23D1-T | Same 2.31V threshold, 1ms timeout, and RESET IN function-but features open-drain active-low RESET output requiring external pullup | Suitable where system-level reset bus is shared and pulled up externally; not direct drop-in due to active-low polarity | Select MAX6387XS23D1-T only if existing design uses open-drain wired-OR reset topology |
| TLV803EB23DBZR | 2.32V threshold, 140ms timeout, SOT-23-3 package; no RESET IN input; ±1.5% threshold accuracy at +25°C (not specified over full temp range) | Limited to single-rail monitoring; longer timeout may delay system boot in time-critical applications | Choose TLV803EB23DBZR only for cost-sensitive, single-rail designs where 140ms reset hold is acceptable |
Compared with MAX6387XS23D1-T, MAX6388XS23D1-T offers push-pull active-high output eliminating external components, while TLV803EB23DBZR lacks dual-rail capability and has looser temperature stability-making MAX6388XS23D1-T optimal for compact, dual-supply industrial sensors requiring minimal external parts and guaranteed performance across temperature.
Availability
MAX6388XS23D1-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and dual-voltage FPGA configurations requiring stable component supply, long-term lifecycle support, and AEC-Q100–qualified variants.
Supply support for MAX6388XS23D1-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, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers ultra-low-power microprocessor supervisory circuits optimized for battery-operated and thermally demanding systems requiring accurate, dual-rail voltage monitoring and guaranteed reset behavior down to 1V.
FAQ
What is the exact reset threshold voltage of the MAX6388XS23D1-T and how stable is it over temperature?
The MAX6388XS23D1-T has a factory-set VCC reset threshold of 2.31V, with ±2.5% accuracy guaranteed over the full operating temperature range of –40°C to +125°C. This stability is achieved via laser-trimmed internal resistors and a precision bandgap reference, ensuring consistent brownout detection without external calibration. The MAX6388XS23D1-T maintains this tolerance across all production units and temperature extremes.
Does the MAX6388XS23D1-T support monitoring of a second voltage rail, and how is it implemented?
Yes, the MAX6388XS23D1-T supports dual-voltage supervision via its dedicated RESET IN pin, which compares an external voltage to an internal 1.27V reference. To monitor a second rail, connect a resistor divider between that rail and ground, with the midpoint fed to RESET IN. The MAX6388XS23D1-T asserts reset if either VCC falls below 2.31V or the divided voltage at RESET IN drops below 1.27V-enabling coordinated reset for multi-rail systems.
What is the reset output configuration of the MAX6388XS23D1-T, and why does it matter for system design?
The MAX6388XS23D1-T features an active-high push-pull reset output, meaning it drives the RESET pin high during reset and pulls it low when deasserted. This eliminates the need for an external pullup resistor, simplifies PCB layout, and ensures fast, low-impedance transitions. Unlike open-drain alternatives, the MAX6388XS23D1-T's push-pull output guarantees clean signal integrity in noise-prone environments and directly interfaces with μP reset inputs expecting active-high assertion.
What is the minimum reset timeout period of the MAX6388XS23D1-T, and how does it affect system startup?
The MAX6388XS23D1-T provides a minimum reset timeout period of 1ms, ensuring the reset signal remains asserted for at least that duration after VCC recovers above 2.31V. This guarantees sufficient time for power supplies to stabilize and microprocessors to complete internal power-on reset sequences before code execution begins. The 1ms timeout makes the MAX6388XS23D1-T suitable for fast-booting embedded systems where longer delays (e.g., 140ms or 1200ms) would unnecessarily increase startup latency.
Is the MAX6388XS23D1-T available in an AEC-Q100 qualified version, and what does that qualification cover?
Yes, the MAX6388XS23D1-T is available in AEC-Q100 qualified versions denoted by the "/V" suffix (e.g., MAX6388XS23D1-T/V). This qualification covers stress testing for automotive-grade reliability-including temperature cycling, humidity bias, ESD, and mechanical shock-across the full –40°C to +125°C operating range. The AEC-Q100 qualified MAX6388XS23D1-T is intended for use in automotive body electronics, infotainment power domains, and other non-safety-critical vehicle subsystems requiring extended lifetime and robustness.
MAX6388XS23D1-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:
- 2.31V, 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
MAX6388XS23D1-T FAQ
1.How can I place an order for MAX6388XS23D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS23D1-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 MAX6388XS23D1-T reliable?
The price and inventory of MAX6388XS23D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS23D1-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS23D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS23D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS23D1-T?
MAX6388XS23D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS23D1-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 MAX6388XS23D1-T?
For technical support, including MAX6388XS23D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS23D1-T requirements.
6.How does Aetrix verify that MAX6388XS23D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS23D1-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 MAX6388XS23D1-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS23D1-T?
All MAX6388XS23D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS23D1-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 MAX6388XS23D1-T part is unused and in its original packaging.
Return procedure for MAX6388XS23D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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