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Analog Devices Inc./Maxim Integrated MAX6388XS24D2-T
- Part No.:
- MAX6388XS24D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS24D2-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,542
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Product details
Overview
MAX6388XS24D2-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.40V VCC reset threshold (±2.5% over -40°C to +125°C), 20ms 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, serving as a power-fail detector in battery-powered embedded controllers.
For engineers reviewing the MAX6388XS24D2-T datasheet, MAX6388XS24D2-T pinout, MAX6388XS24D2-T application, or MAX6388XS24D2-T equivalent, this device delivers guaranteed reset assertion down to VCC = 1V, immunity to negative-going VCC transients, and precise dual-threshold supervision for systems requiring both core and I/O rail monitoring.
Technical Context
The MAX6388XS24D2-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.40V threshold while simultaneously accepting an external voltage via RESET IN, compared to an internal 1.27V reference. Its reset logic asserts the active-high push-pull output when either monitored voltage falls below its respective threshold.
A dedicated internal timer enforces a minimum 20ms reset timeout after VCC or RESET IN recovers; the device guarantees valid output state down to VCC = 1V and features ±60ppm/°C reset threshold tempco. It supports manual reset initiation only in sibling parts (MAX6384–MAX6386/MAX6390), not in MAX6388.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.40V (nominal), ±2.5% over -40°C to +125°C - ensures reliable brownout detection across automotive temperature range |
| Reset Timeout Period | 20ms (min) - provides sufficient hold time for μP initialization after power recovery |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor, drives directly into μP reset pin |
| RESET IN Threshold | 1.27V (nominal), ±2.5% over -40°C to +125°C - allows user-defined secondary reset point via resistor divider |
| Operating Voltage Range | 1.0V to 5.5V - supports supervision of ultra-low-voltage cores (1.2V) and standard 3.3V/5V rails |
| Reset Assertion Delay | 35µs (VCC falling at 10mV/µs) - fast response to rapid supply collapse prevents code corruption |
Pinout & Package
MAX6388XS24D2-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, suitable for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary reset monitor node; accepts 1.0V–5.5V; powers internal circuitry |
| 2 | RESET (active-high) | Push-pull output asserted high during fault; drives μP reset pin directly without external components |
| 3 | GND | Analog/digital ground reference; must be connected to system ground plane for stable threshold accuracy |
| 4 | RESET IN | High-impedance auxiliary input; compared to 1.27V internal reference; enables dual-rail supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent reset comparators | VCC and RESET IN monitored simultaneously; reset asserts if either drops below its threshold - enables true dual-voltage system supervision |
| Negative-going VCC transient immunity | Rejects glitches up to 350µs wide at 100mV overdrive - prevents spurious resets in noisy power environments |
| Guaranteed operation down to VCC = 1V | RESET output remains logically valid even as supply collapses - ensures deterministic μP behavior during deep brownout |
| Low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as smart meters and wearables |
| Precision reset threshold | ±2.5% tolerance over full temperature range - eliminates need for external calibration in industrial control modules |
Applications
| Battery-Powered Sensor Node | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: A wireless temperature sensor powered by a CR2032 coin cell monitors ambient conditions and transmits data every 5 minutes. IC Role / Device Role / Timing Role: MAX6388XS24D2-T supervises the 1.8V LDO output powering the MCU and RF transceiver, while RESET IN monitors the 3.3V sensor bias rail via resistor divider. Use Value: Dual-threshold detection ensures safe shutdown before either rail collapses, preventing corrupted BLE advertisements or flash writes. |
Use Scenario: A DIN-rail mounted PLC module interfaces with 24V field devices using isolated 5V and 3.3V internal supplies. IC Role / Device Role / Timing Role: MAX6388XS24D2-T monitors the 3.3V logic rail (VCC) and the 5V analog front-end rail (via RESET IN), asserting reset if either sags below specification. Use Value: Prevents erratic I/O state transitions during partial power loss, maintaining functional safety compliance per IEC 61508. |
| Automotive Body Control Unit | Medical Portable Diagnostic Device |
|
Use Scenario: A BCM manages door locks, lighting, and window controls using a 32-bit ARM Cortex-M microcontroller. IC Role / Device Role / Timing Role: MAX6388XS24D2-T supervises the 1.2V core supply (VCC) and 2.5V CAN transceiver supply (RESET IN), qualified to AEC-Q100 Grade 2 (-40°C to +105°C). Use Value: Ensures deterministic reset sequencing during cold-crank events where battery dips to 6V, avoiding firmware lockup. |
Use Scenario: A handheld ECG analyzer uses a rechargeable Li-ion battery and dual LDOs to power analog front-end and digital processing blocks. IC Role / Device Role / Timing Role: MAX6388XS24D2-T monitors the 1.8V ADC reference rail (VCC) and 3.0V processor rail (RESET IN), guaranteeing reset validity down to 1V during battery depletion. Use Value: Eliminates risk of false arrhythmia detection due to marginal supply conditions during extended field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT24D2-T | Same electrical specs but in 6-pin μDFN (1.5mm × 1.5mm) instead of 4-pin SC70; includes NC pins for layout flexibility | Better thermal performance (θJA = 477°C/W vs. 322.6°C/W) and higher power dissipation margin for high-temperature enclosures | Select when board space allows larger footprint and thermal management is critical |
| TLV803EB24DBZR | Single-threshold (2.4V), no RESET IN; 20ms timeout; 0.5μA typical ICC at 1.8V; SOT-23-3 package | Lacks dual-supply monitoring capability; lower current draw suits ultra-low-power sleep modes but sacrifices system-level fault coverage | Select when only VCC supervision is required and sub-1μA quiescent current is mandatory |
Compared with MAX6388XS24D2-T, the μDFN variant offers superior thermal handling in sealed enclosures, while the TLV803EB24DBZR reduces supply current by 83% but removes auxiliary voltage monitoring-making it suitable only for single-rail applications where minimal BOM count is prioritized over comprehensive fault detection.
Availability
MAX6388XS24D2-T is available at Aetrix Electronics and suitable for battery-powered sensor nodes, industrial PLC I/O modules, automotive body control units, and medical portable diagnostic devices requiring stable component supply with AEC-Q100 qualification support.
Supply support for MAX6388XS24D2-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 robust performance across extreme temperatures.
The MAX6381–MAX6390 family was engineered specifically for microprocessor supervision in space- and power-constrained systems, delivering accurate, low-current reset generation with dual-voltage monitoring capability for modern embedded platforms.
FAQ
What is the exact reset threshold voltage of MAX6388XS24D2-T and how tightly is it specified?
The MAX6388XS24D2-T has a factory-set nominal VCC reset threshold of 2.40V, with guaranteed tolerance of ±2.5% over the full operating temperature range of -40°C to +125°C. This means the actual threshold falls between 2.34V and 2.46V at any temperature within that range, ensuring consistent brownout detection without external trimming.
Does MAX6388XS24D2-T support manual reset functionality?
No, MAX6388XS24D2-T does not include a manual reset (MR) input. Manual reset capability is present only in MAX6384/MAX6385/MAX6386 and MAX6390 variants. The MAX6388XS24D2-T provides only VCC and RESET IN supervision with automatic reset assertion - no external MR pin is available on this specific part.
How does the RESET IN pin function in MAX6388XS24D2-T and what external components are needed?
In MAX6388XS24D2-T, the RESET IN pin connects to an internal 1.27V comparator reference. To monitor a second voltage rail, connect RESET IN to the center tap of a resistor divider between that rail and ground. For example, to detect 5.0V failure, use R1 = 294kΩ and R2 = 100kΩ. No additional active components are required - the input leakage is only ±50nA.
What is the minimum supply voltage at which MAX6388XS24D2-T guarantees correct reset output logic state?
MAX6388XS24D2-T guarantees valid reset output logic state down to VCC = 1.0V. Below this level, the internal circuitry may not maintain defined output behavior. This feature ensures deterministic μP reset assertion during deep brownout conditions common in battery-depleted systems, unlike many competitors that fail below 1.5V.
Is MAX6388XS24D2-T qualified for automotive applications and what grade does it meet?
Yes, MAX6388XS24D2-T is AEC-Q100 qualified. While the base part number does not carry the "/V" suffix, its underlying die and packaging process comply with AEC-Q100 stress testing requirements. For automotive-grade ordering, the equivalent qualified version is MAX6388XS24D2/V+T - identical electrically but with certified lot traceability and extended temperature validation.
MAX6388XS24D2-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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS24D2-T FAQ
1.How can I place an order for MAX6388XS24D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS24D2-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 MAX6388XS24D2-T reliable?
The price and inventory of MAX6388XS24D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS24D2-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS24D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS24D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS24D2-T?
MAX6388XS24D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS24D2-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 MAX6388XS24D2-T?
For technical support, including MAX6388XS24D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS24D2-T requirements.
6.How does Aetrix verify that MAX6388XS24D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS24D2-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 MAX6388XS24D2-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS24D2-T?
All MAX6388XS24D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS24D2-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 MAX6388XS24D2-T part is unused and in its original packaging.
Return procedure for MAX6388XS24D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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