My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6388XS18D6-T
- Part No.:
- MAX6388XS18D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS18D6-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,893
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6388XS18D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 1.8V reset threshold (±2.5% over -40°C to +125°C), 560ms minimum VCC 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 embedded controllers requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6388XS18D6-T datasheet, MAX6388XS18D6-T pinout, MAX6388XS18D6-T application, or MAX6388XS18D6-T equivalent, key selection criteria include its 1.8V threshold accuracy, 560ms reset timeout, 4-pin SC70 package footprint, dual-supply monitoring capability via RESET IN, and compatibility with systems operating down to 1.0V supply voltage.
Technical Context
The MAX6388XS18D6-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 1.8V threshold while simultaneously accepting an external voltage on RESET IN for secondary supply supervision. Its internal timer ensures reset remains asserted for ≥560ms after VCC recovers above threshold.
It features an active-high push-pull RESET output capable of sourcing 150µA at 1.8V and sinking 80µA, with guaranteed logic validity down to VCC = 1V. The RESET IN input compares against a stable 1.27V internal reference and supports resistor-divider configuration for user-defined thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.8V ±2.5% over -40°C to +125°C - ensures reliable detection of 1.8V rail brownout across automotive/industrial temperature range |
| VCC Reset Timeout | 560ms minimum - provides sufficient hold time for 1.8V-powered microcontrollers to complete power-up initialization |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable devices |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct interface to CMOS/TTL reset inputs |
| RESET IN Threshold | 1.27V internal reference - allows precise secondary voltage monitoring (e.g., 3.3V I/O rail) using external resistor divider |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions before system shutdown |
| Package | 4-pin SC70 (X4+1 outline) - compact 1.3mm × 1.6mm footprint ideal for space-constrained portable PCB layouts |
Pinout & Package
MAX6388XS18D6-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.3mm × 1.6mm × 0.95mm, with thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - must be connected to the 1.8V rail being supervised |
| 2 | RESET | Active-high push-pull reset output - drives high during fault condition; directly interfaces to µP /RESET pin without pullup |
| 3 | GND | Analog ground reference - requires low-impedance connection to system ground plane for noise immunity |
| 4 | RESET IN | Auxiliary voltage monitor input - accepts divided-down voltage (e.g., from 3.3V rail) to trigger reset if second supply fails |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring | Simultaneous supervision of VCC (1.8V) and external rail via RESET IN - enables single-chip protection for core/I/O dual-rail systems |
| Negative-going transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive - prevents spurious resets in electrically noisy environments |
| Low-VCC reset guarantee | Valid RESET output state maintained down to VCC = 1.0V - ensures deterministic behavior during deep brownout recovery |
| Factory-trimmed accuracy | ±2.5% reset threshold tolerance over full temperature range - eliminates need for external calibration in production |
| Ultra-low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as smart meters and wearables |
Applications
| Battery-Powered Microcontroller Systems | Dual-Rail Power Management |
|---|---|
Use Scenario: Portable medical sensor with 1.8V MCU core and 3.3V analog front-end, powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Supervises both 1.8V core rail and 3.3V I/O rail; asserts active-high RESET for ≥560ms on any rail dropout. Use Value: Prevents firmware corruption during battery voltage sag, enabling reliable wake-from-sleep operation without external supervisor ICs. | Use Scenario: Industrial PLC module with separate 1.8V FPGA core and 5V I/O interface, requiring coordinated power sequencing. IC Role / Device Role / Timing Role: Monitors 1.8V VCC directly and 5V rail via 1.27V-referenced RESET IN divider; triggers unified reset event. Use Value: Eliminates need for two discrete supervisors, reducing BOM count and PCB area while ensuring synchronized reset timing. |
| Automotive Body Control Modules | Low-Power IoT Edge Nodes |
Use Scenario: AEC-Q100 qualified body controller using 1.8V microcontroller, exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Provides robust reset assertion during 12V system brownouts affecting 1.8V LDO output; immune to sub-35µs VCC glitches. Use Value: Meets automotive reliability requirements without additional filtering components, simplifying design validation. | Use Scenario: Wireless environmental sensor node sleeping >99% of time, waking every 10 minutes to sample and transmit data. IC Role / Device Role / Timing Role: Ensures clean MCU boot after wake-up from ultra-low-power mode; draws only 3μA during sleep. Use Value: Extends CR2477 battery life beyond 10 years by minimizing supervisor leakage and enabling shortest viable reset timeout (560ms). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT18D6-T | Same electrical specs but in 6-pin μDFN (L611+1) instead of 4-pin SC70 - larger footprint, higher thermal resistance (θJA = 477°C/W) | Preferred where board layout accommodates larger package and requires better thermal dissipation margin | Select when μDFN soldering process is standardized and PCB real estate is not constrained |
| TPS3808G18DBVR | TI part with 1.8V threshold, 600ms timeout, open-drain output - requires external pullup; 1.5μA typical ICC at 1.8V | Suitable for systems already using open-drain reset buses or requiring lower quiescent current | Choose when interoperability with existing open-drain reset networks is required or sub-2μA ICC is critical |
Compared with MAX6388XS18D6-T, the μDFN alternative offers greater thermal margin but occupies 2.5× more PCB area, while the TPS3808G18DBVR reduces current draw by ~50% but adds external component overhead and lacks active-high push-pull drive.
Availability
MAX6388XS18D6-T is available at Aetrix Electronics and suitable for battery-powered microcontroller systems, dual-rail power management, automotive body control modules, and low-power IoT edge nodes requiring stable component supply and long-term manufacturing continuity.
Supply support for MAX6388XS18D6-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 communications applications, emphasizing low power, high reliability, and small form factor.
The MAX6381–MAX6390 family delivers single/dual-supply microprocessor reset supervision with ultra-low ICC, wide temperature range, and multiple output configurations - engineered specifically for space- and energy-constrained embedded systems.
FAQ
What is the exact reset threshold voltage and tolerance for MAX6388XS18D6-T?
The MAX6388XS18D6-T has a factory-set reset threshold of 1.8V with ±2.5% accuracy over the full operating temperature range of -40°C to +125°C. This specification is guaranteed by design and applies to all units, ensuring consistent brownout detection across automotive and industrial environments without calibration.
Does MAX6388XS18D6-T support monitoring a second voltage rail?
Yes, MAX6388XS18D6-T includes a dedicated RESET IN pin that compares an external voltage against an internal 1.27V reference. By connecting a resistor divider to RESET IN, users can configure supervision of a second rail (e.g., 3.3V or 5V) alongside the primary 1.8V VCC rail, enabling dual-supply fault detection with a single IC.
What is the function of the RESET output on MAX6388XS18D6-T?
The RESET output of MAX6388XS18D6-T is an active-high push-pull driver. It asserts high when VCC falls below 1.8V or when the voltage at RESET IN drops below 1.27V, and remains high for a minimum of 560ms after recovery. This eliminates the need for an external pullup resistor and ensures direct compatibility with standard microcontroller /RESET inputs.
Can MAX6388XS18D6-T operate reliably at VCC = 1.0V?
Yes, MAX6388XS18D6-T guarantees valid logic states on its RESET output down to VCC = 1.0V. This ensures deterministic reset behavior during deep brownout conditions, allowing safe microcontroller initialization even as the supply collapses - a critical feature for fail-safe operation in battery-depleted scenarios.
What package type and dimensions does MAX6388XS18D6-T use?
MAX6388XS18D6-T uses a 4-pin SC70 package (outline 21-0098) measuring 1.3mm × 1.6mm × 0.95mm, with land pattern 90-0187. It is RoHS-compliant (+ suffix), rated for -40°C to +125°C operation, and optimized for high-density portable PCB layouts where minimal footprint is essential.
MAX6388XS18D6-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:
- 1.8V, Adj
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS18D6-T FAQ
1.How can I place an order for MAX6388XS18D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS18D6-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 MAX6388XS18D6-T reliable?
The price and inventory of MAX6388XS18D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS18D6-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS18D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS18D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS18D6-T?
MAX6388XS18D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS18D6-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 MAX6388XS18D6-T?
For technical support, including MAX6388XS18D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS18D6-T requirements.
6.How does Aetrix verify that MAX6388XS18D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS18D6-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 MAX6388XS18D6-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS18D6-T?
All MAX6388XS18D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS18D6-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 MAX6388XS18D6-T part is unused and in its original packaging.
Return procedure for MAX6388XS18D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS18D6-T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
