My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6386XS26D3
- Part No.:
- MAX6386XS26D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS26D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,707
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6386XS26D3 from Maxim Integrated is a low-power, open-drain active-low microprocessor supervisory circuit with factory-set 2.63V reset threshold, 140ms minimum reset timeout, and debounced manual reset input. It monitors VCC in systems from +1.8V to +5.0V, consumes only 3µA at +1.8V, guarantees valid reset output down to VCC = 1V, and is used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6386XS26D3 datasheet, MAX6386XS26D3 pinout, MAX6386XS26D3 application, or MAX6386XS26D3 equivalent, key selection criteria include its open-drain active-low reset output, 2.63V ±2.5% threshold accuracy over –40°C to +125°C, 140ms reset timeout, integrated MR pullup resistor (63kΩ), and SC70-4 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6386XS26D3 implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across temperature, paired with a monolithic RC timer for deterministic 140ms reset assertion after VCC recovery. Its open-drain RESET output requires an external pullup and remains asserted during VCC brownouts or manual MR activation.
It features a dedicated active-low manual reset input (MR) with internal 63kΩ pullup to VCC, enabling pushbutton-initiated resets without external components. The device operates from 1.0V to 5.5V supply and maintains guaranteed logic state integrity down to VCC = 1V - critical for low-voltage microcontroller startup sequencing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±2.5% over –40°C to +125°C - ensures accurate brownout detection across industrial temperature range |
| Reset Timeout | 140ms minimum - provides sufficient hold time for microcontroller initialization before release |
| Supply Current | 3µA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Output Type | Open-drain active-low - supports wired-OR reset bus configurations and level translation |
| MR Input | Active-low with 63kΩ internal pullup - eliminates need for external resistor in manual reset switch circuits |
| Operating Voltage | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions |
| Temp Range | –40°C to +125°C - qualified for automotive under-hood and industrial control applications |
Pinout & Package
MAX6386XS26D3 is housed in a lead-free 4-pin SC70 package (X4-1), measuring 1.0mm × 1.0mm × 0.55mm, suitable for ultra-compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - powers internal circuitry and serves as reference for reset threshold detection |
| 2 | RESET | Open-drain active-low reset output - sinks current when asserted; requires external pullup for logic-high state |
| 3 | MR | Active-low manual reset input - forces reset when pulled low; internally pulled up to VCC via 63kΩ resistor |
| 4 | GND | Analog and digital ground reference - must be connected directly to system ground plane for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±2.5% tolerance over full temperature range - eliminates need for external calibration or trimming resistors |
| Debounced manual reset input | Integrated 63kΩ pullup and glitch rejection (100ns) - enables direct connection to mechanical switches without external RC filtering |
| Low-voltage operation guarantee | Valid RESET output asserted down to VCC = 1V - ensures deterministic reset behavior during severe brownout events |
| Negative-going transient immunity | Immune to VCC glitches ≤35µs at 100mV overdrive - prevents spurious resets in electrically noisy environments |
| Ultra-low quiescent current | 3µA at 1.8V - extends battery life in always-on monitoring applications such as smart meters and wearables |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose monitor requiring reliable power-on reset and brownout recovery during intermittent battery discharge. IC Role / Device Role / Timing Role: Supervisory IC providing active-low reset signal to ARM Cortex-M0 MCU upon VCC drop below 2.63V or button press. Use Value: 140ms timeout ensures full MCU register initialization; 3µA supply current enables >5-year operation on CR2032 cell. | Use Scenario: DIN-rail mounted programmable logic controller with dual 3.3V/5V rails needing independent reset coordination. IC Role / Device Role / Timing Role: Primary VCC supervisor for 3.3V logic domain, asserting open-drain RESET to shared reset bus. Use Value: Open-drain output allows wired-OR with other supervisors; ±2.5% threshold accuracy prevents false resets during 10°C/h ambient shifts. |
| Automotive Body Control Units | Smart Home Hub Power Management |
Use Scenario: Under-dash BCM subjected to load-dump transients and cold-crank voltage sags down to 6V battery input. IC Role / Device Role / Timing Role: Secondary supervisor monitoring 3.3V LDO output, asserting reset if VCC falls below 2.63V during cranking. Use Value: 35µs negative-transient immunity rejects ignition noise; –40°C to +125°C rating matches AEC-Q100 Grade 2 requirements. | Use Scenario: Wi-Fi-connected home automation hub powered by USB-C PD with dynamic 3.3V/5V rail switching. IC Role / Device Role / Timing Role: Reset generator for application processor, triggered by either VCC sag or user-initiated factory reset via front-panel button. Use Value: MR input with internal pullup simplifies BOM; 140ms timeout aligns with Linux kernel bootloader watchdog window. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326XR26D3 | Same 2.63V threshold and 140ms timeout, but push-pull active-low output and no MR input | Lacks manual reset capability; requires external pullup for open-drain compatibility | Select when board layout already uses push-pull reset and no physical reset button is needed |
| TPS3808G33DBVR | 2.93V threshold (not 2.63V), 200ms timeout, 1.8V–6.0V operation, no MR input | Higher threshold limits use in 2.5V/2.8V systems; longer timeout may delay boot sequence | Choose for TI-based designs where 2.93V margin better suits 3.3V rail tolerance stack-up |
Compared with MAX6326XR26D3 and TPS3808G33DBVR, the MAX6386XS26D3 uniquely combines precise 2.63V detection, 140ms timing, open-drain output, and integrated MR - making it optimal for compact, button-enabled, low-voltage embedded systems where reset bus sharing and minimal BOM count are design priorities.
Availability
MAX6386XS26D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart home hub power management requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6386XS26D3 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, sensing, and interface applications, with emphasis on high-reliability, low-power solutions.
The MAX6381–MAX6390 family was engineered specifically for microprocessor reset supervision in space- and power-constrained systems, delivering factory-trimmed thresholds, ultra-low ICC, and robust transient immunity in miniature SC70 and µDFN packages.
FAQ
What is the exact reset threshold voltage of the MAX6386XS26D3?
The MAX6386XS26D3 has a factory-set reset threshold of 2.63V, specified 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 (suffix "26"), and applies directly to the MAX6386XS26D3 without deviation or binning.
Does the MAX6386XS26D3 require an external pullup resistor on the RESET pin?
Yes, the MAX6386XS26D3 features an open-drain active-low RESET output, which requires an external pullup resistor to VCC or another logic rail to establish a defined high state when deasserted. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
What is the function and electrical behavior of the MR pin on the MAX6386XS26D3?
The MR pin on the MAX6386XS26D3 is an active-low manual reset input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces immediate reset assertion; release triggers the 140ms timeout. The pin accepts TTL/CMOS logic levels and tolerates voltages up to VCC + 0.3V.
Can the MAX6386XS26D3 operate reliably at VCC = 1.2V?
Yes, the MAX6386XS26D3 guarantees correct RESET output logic state down to VCC = 1.0V, per the Electrical Characteristics table. At VCC = 1.2V, it continues to monitor the 2.63V threshold (relative to its internal reference), assert RESET when VCC drops below that point, and maintain valid timing - essential for ultra-low-voltage microcontrollers.
What package type and dimensions does the MAX6386XS26D3 use?
The MAX6386XS26D3 is packaged in a lead-free 4-pin SC70 (X4-1) package, with footprint dimensions of 1.0mm × 1.0mm and height of 0.55mm. This compact outline is documented in Maxim's package drawing 21-0098 and supports reflow soldering per JEDEC J-STD-020.
MAX6386XS26D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS26D3 FAQ
1.How can I place an order for MAX6386XS26D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS26D3 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 MAX6386XS26D3 reliable?
The price and inventory of MAX6386XS26D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS26D3 is usually 5 days.
3.What payment methods are accepted for MAX6386XS26D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS26D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS26D3?
MAX6386XS26D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS26D3 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 MAX6386XS26D3?
For technical support, including MAX6386XS26D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS26D3 requirements.
6.How does Aetrix verify that MAX6386XS26D3 is sourced from the original manufacturer or authorized distributors?
All MAX6386XS26D3 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 MAX6386XS26D3 meets industry standards.
7.What is the process for return or replacement of MAX6386XS26D3?
All MAX6386XS26D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS26D3, 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 MAX6386XS26D3 part is unused and in its original packaging.
Return procedure for MAX6386XS26D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6386XS26D3 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…
