My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6388XS27D2-T
- Part No.:
- MAX6388XS27D2-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6388XS27D2-T.pdf
- Description:
- IC SUPERVISOR 2 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,269
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6388XS27D2-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), 20ms minimum reset timeout, and auxiliary RESET IN input for dual-voltage monitoring. It consumes only 3μA at +1.8V and operates down to VCC = 1.0V, serving in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6388XS27D2-T datasheet, MAX6388XS27D2-T pinout, MAX6388XS27D2-T application, or MAX6388XS27D2-T equivalent, this page delivers verified specifications, package mapping, functional context for dual-supply monitoring, and validated alternative options - all grounded in Maxim's official documentation for the exact part number.
Technical Context
The MAX6388XS27D2-T integrates a precision voltage comparator monitoring VCC against a fixed 2.70V threshold and a second high-impedance comparator on the RESET IN pin referenced to +1.27V. It asserts an active-high push-pull RESET signal when either voltage falls below its respective threshold.
A built-in timer guarantees a minimum 20ms reset assertion after VCC or RESET IN recovers, with guaranteed logic-state validity down to VCC = 1.0V. Its 4-pin SC70 package supports space-constrained designs while maintaining immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Reset Threshold | 2.70V (nominal), ±2.5% over -40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges. |
| RESET Timeout Period | 20ms (minimum) - provides sufficient hold time for microprocessor initialization before release. |
| Supply Current | 3μA at +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 drives CMOS/TTL loads directly. |
| RESET IN Input Threshold | +1.27V (nominal), ±2.5% over temperature - allows precise secondary supply monitoring via external resistor divider. |
| Operating Voltage Range | 1.0V to 5.5V - supports valid reset assertion even during deep brownout or ultra-low-power wake-up sequences. |
| Reset Comparator Overdrive Immunity | 35µs max transient duration at 100mV overdrive - suppresses false resets from short power glitches. |
Pinout & Package
MAX6388XS27D2-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), optimized for high-density PCB layouts with thermal resistance θJA = 322.6°C/W on multilayer board.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and primary reset monitor node; powers internal circuitry and sets reference for VCC comparator. |
| 2 | RESET | Active-high push-pull output; drives high during reset assertion and low otherwise - compatible with standard µP reset inputs. |
| 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 internal +1.27V reference - enables user-defined secondary supply threshold via resistor divider. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent voltage monitoring | VCC and RESET IN each drive reset independently - supports simultaneous core/I/O rail supervision without external logic. |
| Factory-trimmed reset threshold accuracy | ±2.5% over full -40°C to +125°C range - eliminates need for calibration in automotive and industrial applications. |
| Guaranteed reset validity down to VCC = 1.0V | Ensures deterministic reset state during ultra-low-voltage wake-up - critical for energy-harvesting and battery-dead recovery. |
| Negative-going VCC transient immunity | Rejects glitches ≤35µs at 100mV overdrive - prevents spurious resets in electrically noisy environments like motor control or power conversion. |
| Low quiescent current | 3μA at +1.8V - extends shelf life and runtime in always-on sensor nodes and wearables. |
Applications
| Industrial PLC Power Sequencing | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Monitors both 5V system rail and 3.3V microcontroller core supply during cold-cranking and load-dump events. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting active-high RESET until both rails stabilize above 2.70V and 1.27V-derived thresholds. Use Value: Prevents firmware corruption by enforcing synchronized power-up sequence with 20ms minimum hold time. |
Use Scenario: Supervises 12V-to-5V DC/DC converter output and 5V-to-3.3V LDO output in infotainment head unit. IC Role / Device Role / Timing Role: Provides fail-safe reset using RESET IN as adjustable 3.3V monitor while VCC tracks 5V rail. Use Value: Enables AEC-Q100-compliant reset behavior with guaranteed operation to +125°C and glitch immunity. |
| Portable Medical Sensor Hub | Battery-Powered Smart Meter |
Use Scenario: Powers from single Li-ion cell (2.7–4.2V) and monitors both main supply and regulated 1.8V sensor interface rail. IC Role / Device Role / Timing Role: Uses VCC for primary brownout detection and RESET IN for secondary rail supervision via resistor divider. Use Value: Delivers 3μA supply current and 20ms reset hold - enabling >5-year battery life with robust power-fail response. |
Use Scenario: Operates from supercapacitor backup during AC mains failure; monitors main 3.3V rail and backup 2.5V rail. IC Role / Device Role / Timing Role: Asserts RESET if either rail drops below threshold, with guaranteed validity down to VCC = 1.0V. Use Value: Ensures meter retains RTC and memory integrity during extended brownouts without external reset conditioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6388LT27D2-T | Same electrical specs but in 6-pin μDFN (L611+1) instead of 4-pin SC70 - larger footprint, lower θJA (477°C/W vs. 322.6°C/W). | Preferred for thermally demanding environments where SC70 self-heating may affect timing stability. | Select when board layout allows larger package and thermal performance outweighs size constraints. |
| MAX6385XS27D2-T | Identical 4-pin SC70 package and 2.70V/20ms specs, but includes manual reset (MR) input - adds external reset capability not present in MAX6388XS27D2-T. | Suitable where field-serviceable reset or test-mode entry is required, adding one extra control line. | Choose only if MR functionality is needed; otherwise MAX6388XS27D2-T offers simpler BOM and routing. |
Compared with MAX6388XS27D2-T, the μDFN-packaged MAX6388LT27D2-T trades board area for improved thermal margin, while MAX6385XS27D2-T adds MR functionality at no cost to footprint or reset timing - making it a functional superset where manual reset is justified.
Availability
MAX6388XS27D2-T is available at Aetrix Electronics and suitable for industrial PLC power sequencing, automotive body control modules, portable medical sensor hubs, battery-powered smart meters, and dual-voltage embedded systems requiring stable component supply and long-term lifecycle support.
Supply support for MAX6388XS27D2-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 power management, sensing, and interface applications, with emphasis on reliability and low-power operation.
The MAX6381–MAX6390 family delivers single/dual low-voltage supervisory circuits targeting space- and power-constrained embedded systems needing guaranteed reset behavior across harsh temperature and noise environments.
FAQ
What is the exact reset threshold voltage of MAX6388XS27D2-T?
The MAX6388XS27D2-T has a factory-set VCC reset threshold of 2.70V (nominal), with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +125°C). This value is confirmed in Maxim's Reset Thresholds table, where suffix "27" corresponds to VTH(min) = 2.63V, VTH(nom) = 2.70V, VTH(max) = 2.77V.
Does MAX6388XS27D2-T support dual-voltage monitoring?
Yes, MAX6388XS27D2-T supports dual-voltage monitoring via two independent comparators: one on VCC (2.70V threshold) and one on the RESET IN pin (1.27V internal reference). When either input falls below its threshold, the active-high RESET output asserts - enabling supervision of core and I/O rails without external components.
What is the function of the RESET IN pin on MAX6388XS27D2-T?
The RESET IN pin on MAX6388XS27D2-T is a high-impedance input compared to an internal +1.27V reference. It allows user-defined secondary voltage monitoring via an external resistor divider. Reset asserts if RESET IN voltage drops below 1.27V, and the pin draws ≤50nA leakage current - ensuring minimal impact on source impedance.
Is MAX6388XS27D2-T pin-compatible with other parts in the MAX6381–MAX6390 family?
MAX6388XS27D2-T uses the 4-pin SC70 package shared with MAX6384–MAX6390 variants. However, pin functions differ: MAX6388XS27D2-T assigns Pin 4 to RESET IN, whereas MAX6384/MAX6385/MAX6386 use Pin 3 for MR. Thus, it is not pin-compatible with MR-equipped variants - direct replacement requires schematic and layout review.
What is the minimum VCC voltage at which MAX6388XS27D2-T guarantees correct RESET output state?
MAX6388XS27D2-T guarantees valid RESET output logic state down to VCC = 1.0V. This is explicitly specified in the Electrical Characteristics table under "RESET Output State Guaranteed Valid Down to VCC = 1V", ensuring deterministic behavior during deep brownout or ultra-low-power wake-up conditions.
MAX6388XS27D2-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:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6388XS27D2-T FAQ
1.How can I place an order for MAX6388XS27D2-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6388XS27D2-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 MAX6388XS27D2-T reliable?
The price and inventory of MAX6388XS27D2-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6388XS27D2-T is usually 5 days.
3.What payment methods are accepted for MAX6388XS27D2-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6388XS27D2-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6388XS27D2-T?
MAX6388XS27D2-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6388XS27D2-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 MAX6388XS27D2-T?
For technical support, including MAX6388XS27D2-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6388XS27D2-T requirements.
6.How does Aetrix verify that MAX6388XS27D2-T is sourced from the original manufacturer or authorized distributors?
All MAX6388XS27D2-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 MAX6388XS27D2-T meets industry standards.
7.What is the process for return or replacement of MAX6388XS27D2-T?
All MAX6388XS27D2-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6388XS27D2-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 MAX6388XS27D2-T part is unused and in its original packaging.
Return procedure for MAX6388XS27D2-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6388XS27D2-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…
