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Analog Devices Inc./Maxim Integrated MAX6388XS16D3+T
- Part No.:
- MAX6388XS16D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS16D3+T.pdf
- Description:
- IC MPU/RESET CIRC 1.58V SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6388XS16D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.58V VCC reset threshold (±2.5% over −40°C to +125°C), 140ms 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, targeting power-critical embedded systems requiring reliable brownout detection.
For engineers reviewing the MAX6388XS16D3+T datasheet, MAX6388XS16D3+T pinout, MAX6388XS16D3+T application, or MAX6388XS16D3+T equivalent, key selection criteria include its 1.58V reset threshold accuracy, 140ms VCC timeout, 4-pin SC70 package, RESET IN comparator interface, and compatibility with dual-rail voltage monitoring in portable and automotive-grade designs.
Technical Context
The MAX6388XS16D3+T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 1.58V threshold, while its auxiliary RESET IN pin compares external voltage to an internal 1.27V reference. Reset assertion is synchronized to VCC or RESET IN falling below their respective thresholds, with guaranteed logic-state validity down to VCC = 1V.
Its internal timer enforces a minimum 140ms reset timeout after VCC recovery, and the active-high push-pull output drives high during reset-eliminating need for external pullup. The device features negative-going VCC transient immunity up to 35µs at 100mV overdrive and supports manual reset via MR only in other family members (not MAX6388).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 1.58V (min), ±2.5% accuracy over −40°C to +125°C - ensures stable reset activation across automotive temperature range |
| Reset Timeout Period | 140ms (min) - guarantees sufficient processor hold time during power-up recovery |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year battery life in always-on monitoring applications |
| Operating Voltage Range | 1.0V to 5.5V - supports operation down to near-dead-battery conditions and interfaces with 5V legacy systems |
| RESET Output Type | Active-high push-pull - provides rail-to-rail drive without external components or pull resistors |
| Auxiliary Input | RESET IN with 1.27V internal reference - enables user-configurable second-voltage monitoring via resistor divider |
| Reset Propagation Delay | 4.5µs (RESET IN to RESET) - ensures fast response to secondary supply faults |
Pinout & Package
MAX6388XS16D3+T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098), measuring 2.0mm × 2.1mm × 0.95mm, optimized for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - powers internal circuitry and triggers reset when falling below 1.58V |
| 2 | RESET | Active-high push-pull output - asserts high during reset condition; sinks/source current without external biasing |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane for accurate threshold sensing |
| 4 | RESET IN | High-impedance auxiliary comparator input - monitors secondary voltage using external resistor divider; resets if input falls below 1.27V |
Key Features
| Feature | Design Value |
|---|---|
| Dual-voltage supervision | Simultaneous monitoring of VCC (1.58V threshold) and external rail via RESET IN (1.27V reference), enabling robust dual-supply fault detection |
| Low-power operation | 3μA supply current at 1.8V allows integration into energy-harvesting and coin-cell-powered systems without compromising battery life |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1.0V - critical for graceful shutdown in deep brownout scenarios |
| Negative transient immunity | Withstands VCC glitches up to 35µs duration at 100mV overdrive - reduces false resets in noisy power environments |
| Small-footprint packaging | 4-pin SC70 footprint (2.0mm × 2.1mm) saves >60% board area versus SOIC-8 alternatives while maintaining thermal performance (θJA = 322.6°C/W) |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Wearable ECG patch monitoring battery voltage and analog front-end supply under variable load and temperature. IC Role / Device Role / Timing Role: Supervises main 1.8V rail and auxiliary 3.3V sensor supply; asserts reset within 4.5µs of RESET IN fault to halt data acquisition before corruption. Use Value: Prevents corrupted physiological data storage by enforcing deterministic reset timing during dual-rail brownout events. | Use Scenario: Door module powered by 12V battery (regulated to 5V/3.3V) operating across −40°C to +105°C ambient. IC Role / Device Role / Timing Role: Monitors 3.3V MCU core supply (1.58V threshold) and 5V I/O rail (via RESET IN); guarantees 140ms reset hold time for safe firmware reload. Use Value: Ensures fail-safe MCU restart during cold-cranking voltage sag, meeting ISO 16750-2 pulse 4 requirements. |
| Industrial IoT Edge Nodes | Battery-Powered Smart Meters |
Use Scenario: LoRaWAN node with dual LiSOCl₂ cells (3.6V nominal) powering MCU and RF transceiver with separate LDOs. IC Role / Device Role / Timing Role: Tracks main 3.3V supply and backup 1.8V real-time clock rail; uses RESET IN to detect RTC LDO dropout before main supply collapse. Use Value: Preserves timekeeping integrity and enables graceful state save prior to full system reset. | Use Scenario: AMI meter with 3.6V primary cell and 3.0V backup capacitor, requiring >10-year operational life. IC Role / Device Role / Timing Role: Supervises 3.0V system rail with 1.58V threshold and ultra-low 3μA quiescent current; RESET IN monitors capacitor health. Use Value: Extends battery lifetime while ensuring meter reset occurs only on genuine undervoltage-not transient noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6387XS16D3+T | Same 1.58V threshold, 140ms timeout, and 4-pin SC70 package; open-drain active-low RESET output instead of push-pull active-high | Requires external pullup resistor; compatible with wired-OR reset buses and mixed-voltage systems where active-low assertion is standard | Select when interfacing with legacy processors expecting active-low reset or sharing reset line with multiple supervisors |
| TLV809E15DBZR | 1.5V reset threshold (±1.5%), 140ms timeout, SOT-23-3 package; no RESET IN input; 0.5μA typical ICC at 1.8V | Lacks auxiliary voltage monitoring capability; lower supply current but single-rail only; not AEC-Q100 qualified | Choose for cost-sensitive, single-supply consumer applications where dual monitoring is unnecessary and automotive qualification is not required |
Compared with MAX6387XS16D3+T, MAX6388XS16D3+T eliminates external pullup needs and simplifies layout, while TLV809E15DBZR offers lower quiescent current but sacrifices dual-supply supervision and automotive reliability assurance.
Availability
MAX6388XS16D3+T is available at Aetrix Electronics and suitable for portable medical sensors, automotive body control modules, industrial IoT edge nodes, and battery-powered smart meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6388XS16D3+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 reliability, low power, and small form factor.
The MAX6381–MAX6390 product line delivers highly integrated, low-quiescent-current μP supervisory circuits optimized for dual-voltage monitoring, automotive-grade temperature operation, and space-constrained embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6388XS16D3+T and how stable is it over temperature?
The MAX6388XS16D3+T has a factory-set VCC reset threshold of 1.58V (minimum), with ±2.5% accuracy guaranteed over the full −40°C to +125°C operating range. This stability is achieved via laser-trimmed bandgap reference and comparator circuitry, and the device exhibits only 60ppm/°C tempco - ensuring consistent brownout detection in automotive and industrial environments where voltage margins are tight.
Does MAX6388XS16D3+T support manual reset functionality?
No, MAX6388XS16D3+T does not include a manual reset (MR) input. Per the datasheet selector guide and pin configuration diagrams, MR is present only on MAX6384/MAX6385/MAX6386/MAX6390 variants. MAX6388XS16D3+T provides VCC and RESET IN supervision only - reset is triggered solely by monitored voltage faults, not external pushbutton or logic signals.
How is the auxiliary RESET IN input used in MAX6388XS16D3+T, and what voltage does it compare against?
The RESET IN pin on MAX6388XS16D3+T connects to an internal comparator referenced to a precise 1.27V bandgap voltage. To monitor a secondary supply (e.g., 5V or 3.3V), users apply a resistor divider between that supply and ground, connecting the midpoint to RESET IN. The threshold is set by R1/R2 ratio per VINTH = 1.27V × (R1/R2 + 1), enabling flexible dual-rail supervision without additional ICs.
What is the guaranteed operating voltage range for MAX6388XS16D3+T, and does reset remain valid at low VCC?
MAX6388XS16D3+T operates from 1.0V to 5.5V. Critically, its RESET output state is guaranteed valid down to VCC = 1.0V - meaning the active-high signal remains logically correct even as supply collapses. This ensures deterministic processor reset behavior during deep brownout, unlike many competitors whose outputs become indeterminate below ~1.5V.
Is MAX6388XS16D3+T qualified for automotive applications?
Yes, MAX6388XS16D3+T is AEC-Q100 qualified. The "+T" suffix denotes lead-free/RoHS-compliant packaging, and the device is rated for −40°C to +125°C operation - meeting automotive grade 1 requirements. Its ±2.5% reset threshold accuracy over this full range, combined with transient immunity and guaranteed low-VCC reset validity, supports use in body electronics, infotainment, and ADAS subsystems.
MAX6388XS16D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 2
- Voltage - Threshold:
- 1.58V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS16D3+T FAQ
1.How can I place an order for MAX6388XS16D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS16D3+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 MAX6388XS16D3+T reliable?
The price and inventory of MAX6388XS16D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS16D3+T is usually 5 days.
3.What payment methods are accepted for MAX6388XS16D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS16D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS16D3+T?
MAX6388XS16D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS16D3+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 MAX6388XS16D3+T?
For technical support, including MAX6388XS16D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS16D3+T requirements.
6.How does Aetrix verify that MAX6388XS16D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS16D3+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 MAX6388XS16D3+T meets industry standards.
7.What is the process for return or replacement of MAX6388XS16D3+T?
All MAX6388XS16D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS16D3+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 MAX6388XS16D3+T part is unused and in its original packaging.
Return procedure for MAX6388XS16D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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