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Analog Devices Inc./Maxim Integrated MAX6388XS32D1-T
- Part No.:
- MAX6388XS32D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS32D1-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,386
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Product details
Overview
MAX6388XS32D1-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 3.20V ±2.5% reset threshold, and 1ms minimum reset timeout. It monitors VCC from +1.8V to +5.0V while consuming only 3μA at +1.8V, and features auxiliary RESET IN input for dual-voltage monitoring in battery-powered embedded systems.
For engineers reviewing the MAX6388XS32D1-T datasheet, MAX6388XS32D1-T pinout, MAX6388XS32D1-T application, or MAX6388XS32D1-T equivalent, key selection criteria include its 4-pin SC70 package, guaranteed reset validity down to VCC = 1V, ±2.5% threshold accuracy over –40°C to +125°C, and support for dual-supply monitoring via RESET IN comparator referenced to +1.27V.
Technical Context
The MAX6388XS32D1-T integrates a precision voltage comparator with ±2.5% threshold accuracy over temperature and a monostable timer delivering 1ms minimum reset assertion after VCC recovery. Its auxiliary RESET IN input compares against an internal +1.27V reference, enabling user-defined secondary supply monitoring via external resistor divider.
This device uses BiCMOS process technology and operates across –40°C to +125°C. It guarantees valid reset output state down to VCC = 1V and provides negative-going VCC transient immunity up to 35µs for 100mV overdrive, with built-in glitch rejection on MR (100ns) and RESET IN inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.20V ±2.5% (–40°C to +125°C); ensures reliable brownout detection for 3.3V systems |
| Reset Timeout | 1ms minimum; guarantees sufficient processor initialization time after power recovery |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | +1.0V to +5.5V; supports valid reset assertion even during deep brownout conditions |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup and drives high-impedance loads directly |
| RESET IN Threshold | +1.27V ±2.5%; allows precise secondary supply monitoring (e.g., 1.8V I/O rail) via resistor divider |
| Temp Range | –40°C to +125°C; qualified for automotive under-hood and industrial control applications |
Pinout & Package
MAX6388XS32D1-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), footprint-compatible with industry-standard 0.65mm pitch layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor; powers internal circuitry and sets fixed reset threshold |
| 2 | RESET | Active-high push-pull output; asserts high during fault and remains high for 1ms after 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 +1.27V internal reference for dual-rail supervision |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneous VCC and RESET IN supervision enables independent monitoring of core and I/O rails |
| Low-power operation | 3μA supply current at +1.8V extends battery life in portable medical and sensor nodes |
| Guaranteed reset validity | RESET output remains logic-valid down to VCC = 1V, ensuring deterministic behavior during deep brownout |
| Negative transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive, reducing false resets in noisy automotive environments |
| Factory-trimmed accuracy | ±2.5% reset threshold tolerance over full temperature range eliminates need for external calibration |
Applications
| Industrial PLC Power Monitoring | Automotive Body Control Module |
|---|---|
|
Use Scenario: Supervises 3.3V microcontroller supply and 1.2V core voltage in programmable logic controllers operating in factory-floor environments with wide temperature swings. IC Role / Device Role / Timing Role: Dual-rail supervisor asserting active-high reset to prevent firmware corruption during 3.3V rail brownout or 1.2V core undervoltage. Use Value: 3.20V threshold matches nominal 3.3V rail; 1ms timeout satisfies ARM Cortex-M boot timing; RESET IN monitors core rail via 1.27V reference and resistor divider. |
Use Scenario: Monitors battery-backed 5V supply and 3.3V infotainment I/O rail in body control units exposed to cold-cranking transients. IC Role / Device Role / Timing Role: Primary VCC supervisor with auxiliary RESET IN for secondary rail; push-pull output drives reset line without pullup. Use Value: ±2.5% threshold accuracy ensures reliable detection across –40°C to +125°C; 35µs transient immunity prevents false resets during load-dump events. |
| Portable Medical Sensor Node | Battery-Powered Smart Meter |
|
Use Scenario: Powers ultra-low-power ECG sensor node using CR2032 coin cell; must supervise both main 3.0V supply and regulated 1.8V analog front-end rail. IC Role / Device Role / Timing Role: Low-quiescent-current supervisor enabling >5-year battery life; RESET IN configures 1.8V rail monitoring via R-divider. Use Value: 3μA ICC at +1.8V minimizes drain; 1ms timeout meets MSP430 boot requirements; 4-pin SC70 saves PCB area in compact wearable form factor. |
Use Scenario: Supervises 3.3V MCU and 2.5V RTC backup supply in AMI smart meters requiring long-term field reliability and tamper detection. IC Role / Device Role / Timing Role: Dual-threshold supervisor ensuring safe startup after power interruption and maintaining RTC integrity during main supply loss. Use Value: RESET IN monitors RTC rail independently; ±2.5% accuracy prevents premature shutdown during temperature cycling; AEC-Q100–qualified variant available. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388XS32D2-T | Same 3.20V threshold and 4-pin SC70 package, but 20ms reset timeout instead of 1ms | Suitable for systems requiring longer reset hold time (e.g., FPGA configuration loading) | Select when extended reset assertion improves system stability during slow power ramp-up |
| MAX6387XS32D1-T | Identical 3.20V threshold and 1ms timeout, but open-drain active-low RESET output and same 4-pin SC70 package | Requires external pullup; compatible with legacy designs using active-low reset architecture | Choose when interfacing with processors mandating active-low reset or sharing reset bus with other open-drain devices |
Compared with MAX6388XS32D1-T, MAX6388XS32D2-T extends reset duration for slower peripherals, while MAX6387XS32D1-T offers pin-compatible active-low functionality-neither requires PCB changes, but differ in reset polarity and timing, directly impacting MCU interface compatibility and boot sequence timing margins.
Availability
MAX6388XS32D1-T is available at Aetrix Electronics and suitable for industrial PLC power monitoring, automotive body control modules, portable medical sensor nodes, battery-powered smart meters, and dual-voltage embedded systems requiring stable component supply across extended temperature ranges.
Supply support for MAX6388XS32D1-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 accuracy, and robust operation.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor supervisory circuits optimized for battery-powered and thermally harsh environments, with emphasis on guaranteed reset validity, dual-rail monitoring, and AEC-Q100 qualification.
FAQ
What is the exact reset threshold voltage of MAX6388XS32D1-T and how accurate is it over temperature?
The MAX6388XS32D1-T has a factory-set reset threshold of 3.20V with ±2.5% accuracy over the full operating temperature range of –40°C to +125°C. This specification is guaranteed by design and ensures reliable brownout detection for 3.3V systems across automotive and industrial environments without requiring external calibration or trimming.
Does MAX6388XS32D1-T support monitoring of a second voltage rail, and if so, how is it implemented?
Yes, MAX6388XS32D1-T supports dual-voltage monitoring via its dedicated RESET IN pin, which connects to an internal +1.27V reference comparator. By applying a resistor voltage divider to RESET IN, users can configure supervision of a secondary rail (e.g., 1.8V or 2.5V). The device asserts reset if either VCC falls below 3.20V or RESET IN drops below the derived threshold.
What is the reset timeout period of MAX6388XS32D1-T, and is it adjustable?
The MAX6388XS32D1-T has a fixed minimum reset timeout period of 1ms, determined by the "D1" suffix in its part number. This timeout is factory-programmed and not adjustable externally. It ensures sufficient reset assertion time for microcontrollers like ARM Cortex-M or MSP430 to complete internal initialization after power recovery.
What package type and pin count does MAX6388XS32D1-T use, and is it RoHS-compliant?
MAX6388XS32D1-T is packaged in a 4-pin SC70 (outline 21-0098) with 0.65mm lead pitch. The "+T" suffix confirms it is lead(Pb)-free and RoHS-compliant. This compact package supports high-density PCB layouts in space-constrained applications such as wearables and automotive ECUs.
How does the RESET output of MAX6388XS32D1-T behave during deep brownout conditions?
The MAX6388XS32D1-T guarantees valid logic levels on its active-high push-pull RESET output down to VCC = 1V. Below this voltage, the output may become indeterminate-but above 1V, RESET correctly asserts high during fault and deasserts low after timeout, ensuring deterministic microprocessor behavior throughout the operational voltage range.
MAX6388XS32D1-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:
- 3.2V, 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
MAX6388XS32D1-T FAQ
1.How can I place an order for MAX6388XS32D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS32D1-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 MAX6388XS32D1-T reliable?
The price and inventory of MAX6388XS32D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS32D1-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS32D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS32D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS32D1-T?
MAX6388XS32D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS32D1-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 MAX6388XS32D1-T?
For technical support, including MAX6388XS32D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS32D1-T requirements.
6.How does Aetrix verify that MAX6388XS32D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS32D1-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 MAX6388XS32D1-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS32D1-T?
All MAX6388XS32D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS32D1-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 MAX6388XS32D1-T part is unused and in its original packaging.
Return procedure for MAX6388XS32D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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