My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6388XS27D3-T
- Part No.:
- MAX6388XS27D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS27D3-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6388XS27D3-T from Maxim Integrated is a low-power microprocessor supervisory circuit with active-high push-pull reset output, factory-set 2.70V 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, serving in battery-powered instrumentation and embedded controllers requiring reliable power-on reset.
For engineers reviewing the MAX6388XS27D3-T datasheet, MAX6388XS27D3-T pinout, MAX6388XS27D3-T application, or MAX6388XS27D3-T equivalent, key selection criteria include its 2.70V reset threshold accuracy, 140ms VCC timeout, 4-pin SC70 package, auxiliary voltage monitoring capability, and guaranteed reset validity down to VCC = 1V.
Technical Context
The MAX6388XS27D3-T integrates a precision bandgap reference and comparator to monitor VCC against a fixed 2.70V threshold while simultaneously accepting an external voltage via RESET IN for secondary supply supervision. Its internal timer guarantees a minimum 140ms reset assertion after VCC recovery.
It features an active-high push-pull RESET output that drives high during fault conditions and deasserts cleanly upon timeout completion. The RESET IN input compares against a stable +1.27V internal reference, enabling user-defined thresholds via external resistor dividers - supporting dual-rail systems like core/I/O voltage sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.70V ±2.5% over -40°C to +125°C - ensures consistent brownout detection across automotive/industrial temperature ranges |
| Reset Timeout | 140ms min - provides sufficient hold time for μP initialization before release |
| Supply Current | 3μA at 1.8V - enables multi-year operation in coin-cell–powered devices |
| Operating Voltage | 1.0V to 5.5V - supports valid reset signaling even during deep brownout |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup and simplifies interface to μP reset inputs |
| RESET IN Threshold | +1.27V internal reference - allows precise secondary voltage monitoring using two external resistors |
| Package | 4-pin SC70 (X4+1) - compact footprint compatible with space-constrained portable designs |
Pinout & Package
MAX6388XS27D3-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), optimized for high-density PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary voltage monitor - powers device and triggers reset when falling below 2.70V |
| 2 | RESET | Active-high push-pull output - asserts high during VCC undervoltage or RESET IN fault; no external pullup required |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane for accurate threshold sensing |
| 4 | RESET IN | Auxiliary voltage monitor input - compared to +1.27V reference; enables dual-supply reset coordination |
Key Features
| Feature | Design Value |
|---|---|
| Dual-supply monitoring capability | Simultaneous VCC and RESET IN supervision enables coordinated reset of core/I/O rails in SoC-based systems |
| Guaranteed reset validity down to VCC = 1V | Ensures deterministic reset state during deep brownout - critical for nonvolatile memory write integrity |
| Negative-going VCC transient immunity | Rejects short-duration supply glitches without false triggering - improves system robustness in noisy environments |
| Factory-trimmed reset threshold | 2.70V ±2.5% tolerance eliminates need for external calibration components or trimming resistors |
| Low quiescent current | 3μA at 1.8V reduces battery drain in always-on monitoring applications such as smart sensors |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meter monitors core voltage (2.7V) and sensor bias rail (1.8V) during startup and low-battery operation. IC Role / Device Role / Timing Role: Supervises both rails and asserts active-high RESET to halt MCU until both supplies stabilize. Use Value: Prevents corrupted ADC readings or EEPROM writes during marginal power conditions. | Use Scenario: PLC module uses separate 3.3V logic and 24V field-side supplies; requires synchronized reset on either rail failure. IC Role / Device Role / Timing Role: VCC monitors 3.3V logic rail; RESET IN monitors scaled 24V rail via resistor divider to trigger unified reset. Use Value: Eliminates need for two discrete supervisors and reduces BOM count by 50%. |
| Automotive Body Control Units | IoT Edge Node Gateways |
Use Scenario: BCM monitors 5V microcontroller supply and 12V lighting driver rail under cold-crank (-12V transients). IC Role / Device Role / Timing Role: Uses RESET IN to detect 12V rail collapse while VCC tracks 5V domain; asserts reset within 35µs of fault. Use Value: Meets AEC-Q100 requirements for fast, glitch-immune reset response in harsh automotive environments. | Use Scenario: Cellular IoT gateway powers down peripherals during sleep mode but must guarantee clean wake-up sequence. IC Role / Device Role / Timing Role: Monitors main 3.3V supply and auxiliary 1.8V RF modem rail; generates 140ms reset pulse to synchronize wake-up timing. Use Value: Ensures deterministic boot order between application processor and modem subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT27D3-T | Same electrical specs but in 6-pin µDFN package - larger footprint, higher thermal resistance (θJA = 477°C/W) | Suitable for thermally demanding industrial boards where SC70 thermal limits may be exceeded | Select when board layout allows larger package and thermal performance is prioritized over size |
| TPS3808G33DBVR | 2.93V threshold (not 2.70V); 200ms timeout (not 140ms); no RESET IN input - single-rail only | Lacks auxiliary monitoring; better suited for simple single-supply systems without dual-rail coordination needs | Choose only if dual-supply supervision is unnecessary and 2.93V threshold aligns with system margin requirements |
Compared with MAX6388XS27D3-T, the LT27D3 variant offers identical functionality in a thermally superior but physically larger package, while the TPS3808G33DBVR provides lower-cost single-rail supervision at the expense of missing RESET IN capability and tighter threshold alignment.
Availability
MAX6388XS27D3-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and IoT edge node gateways requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6388XS27D3-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 is a semiconductor company specializing in analog and mixed-signal ICs for power, sensing, connectivity, and security applications.
The MAX6381–MAX6390 family was designed specifically for low-power, precision microprocessor reset supervision in space- and energy-constrained systems across automotive, industrial, and portable markets.
FAQ
What is the exact reset threshold voltage of the MAX6388XS27D3-T?
The MAX6388XS27D3-T has a factory-set VCC reset threshold of 2.70V, with ±2.5% accuracy over the full operating temperature range of -40°C to +125°C. This value is confirmed in the Reset Thresholds table of the datasheet and applies specifically to the "27" suffix in the part number. The MAX6388XS27D3-T does not support user-adjustable thresholds - it is a fixed-threshold device.
Does the MAX6388XS27D3-T support manual reset functionality?
No, the MAX6388XS27D3-T does not include a manual reset (MR) input. According to the Selector Guide and Pin Configurations, MR is only present on MAX6384/MAX6385/MAX6386/MAX6390 variants. The MAX6388XS27D3-T belongs to the MAX6387/MAX6388/MAX6389 group, which features RESET IN instead - confirming its role as a dual-supply monitor without manual intervention capability.
What is the function of the RESET IN pin on the MAX6388XS27D3-T?
The RESET IN pin on the MAX6388XS27D3-T connects to an internal +1.27V reference comparator, allowing external resistor-divider networks to set a custom reset threshold for a second voltage rail. When the voltage at RESET IN falls below +1.27V, the device asserts its active-high RESET output - enabling coordinated reset of dual-supply systems like core/I/O or logic/analog domains without requiring a second supervisor IC.
Can the MAX6388XS27D3-T operate reliably at VCC = 1.0V?
Yes, the MAX6388XS27D3-T guarantees correct RESET output logic state down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic reset behavior during deep brownout conditions - critical for preserving data integrity in nonvolatile memory operations and preventing undefined MCU states during low-voltage recovery.
What package type and dimensions does the MAX6388XS27D3-T use?
The MAX6388XS27D3-T uses a 4-pin SC70 package (package code X4+1, outline number 21-0098, land pattern 90-0187), measuring 1.25mm × 1.65mm with 0.65mm pitch. This RoHS-compliant, lead-free package is optimized for high-density PCB layouts and supports standard reflow soldering profiles up to +260°C, making it suitable for automated SMT assembly in portable and industrial applications.
MAX6388XS27D3-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:
- 2.7V, 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
MAX6388XS27D3-T FAQ
1.How can I place an order for MAX6388XS27D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS27D3-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 MAX6388XS27D3-T reliable?
The price and inventory of MAX6388XS27D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS27D3-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS27D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS27D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS27D3-T?
MAX6388XS27D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS27D3-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 MAX6388XS27D3-T?
For technical support, including MAX6388XS27D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS27D3-T requirements.
6.How does Aetrix verify that MAX6388XS27D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS27D3-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 MAX6388XS27D3-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS27D3-T?
All MAX6388XS27D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS27D3-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 MAX6388XS27D3-T part is unused and in its original packaging.
Return procedure for MAX6388XS27D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS27D3-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…
