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Analog Devices Inc./Maxim Integrated MAX6327XR26+
- Part No.:
- MAX6327XR26+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6327XR26+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,845
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Product details
Overview
MAX6327XR26+ from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors VCC supply voltage and asserts a reset signal when voltage falls below 2.63V, holding it for ≥100ms after recovery; features ultra-low 1µA max supply current, operation down to 1.2V VCC, and SC70-3 packaging for space-constrained portable and battery-powered systems.
For engineers reviewing the MAX6327XR26+ datasheet, MAX6327XR26+ pinout, MAX6327XR26+ application, or MAX6327XR26+ equivalent, key selection criteria include reset threshold accuracy (±2.5% over -40°C to +85°C), active-high push-pull output drive capability, transient immunity up to 100µs at 200mV overdrive, and compatibility with 2.5V/3V/3.3V/5V digital systems.
Technical Context
The MAX6327XR26+ uses a precision bandgap-based reset comparator with factory-trimmed 2.63V threshold and 40ppm/°C tempco, ensuring stable trip point across temperature. Its internal timing circuit guarantees minimum 100ms reset timeout after power-up, independent of external components.
Designed for brownout detection in low-power embedded systems, it features built-in immunity to fast VCC transients (≤100µs duration at 200mV overdrive) and maintains valid reset state down to 1.2V VCC - enabling reliable operation during deep battery discharge or partial power loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±2.5% over -40°C to +85°C - ensures accurate brownout detection for 2.5V–3.3V logic rails |
| Supply Current | 1.0µA max at 3V - enables multi-year battery life in always-on monitoring applications |
| Reset Timeout | 100ms to 280ms - provides sufficient hold time for µP initialization and memory stabilization |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep brownout and full-system power-up sequences |
| Output Type | Active-high push-pull - drives high without external pull-up, simplifying interface to µP reset inputs |
| Tempco | 40ppm/°C - minimizes threshold drift across industrial temperature range |
| Hysteresis | 6.3mV - prevents chatter near threshold during slow VCC recovery |
Pinout & Package
Package: SC70-3 (3-pin, 1.25mm × 2.0mm footprint), RoHS-compliant, tape-and-reel delivery.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Active-high push-pull output; drives high during normal operation, pulls low only during reset assertion |
| 3 | VCC | Primary power input; supplies internal circuitry and defines monitored rail; operates from 1.2V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1µA max enables use in energy-harvesting and coin-cell-powered devices without compromising battery life |
| Factory-trimmed reset threshold | 2.63V with ±1.5% room-temp tolerance eliminates need for external resistor networks or calibration |
| Transient-immune comparator | Rejects VCC glitches ≤100µs at 200mV overdrive - prevents false resets in noisy power environments |
| No external components required | Self-contained reset generation reduces BOM count, PCB area, and design validation effort |
| Guaranteed reset state down to 1.2V | Ensures deterministic behavior during deep brownout, supporting graceful shutdown in portable systems |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG sensor operating on single Li-MnO₂ cell with voltage decay from 3.2V to 2.0V over service life. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M0 MCU when VCC drops below 2.63V, preventing corrupted memory writes during brownout. Use Value: 1µA supply current extends battery life beyond 2 years; guaranteed reset assertion down to 1.2V ensures fail-safe shutdown before data corruption occurs. | Use Scenario: DIN-rail mounted I/O module powered from 24VDC supply with local 3.3V LDO feeding FPGA and communication ICs. IC Role / Device Role / Timing Role: Primary power monitor for 3.3V rail, generating clean 100ms+ reset pulse to initialize FPGA configuration upon cold start or undervoltage event. Use Value: 40ppm/°C tempco maintains threshold stability across -40°C to +85°C ambient; push-pull output directly drives FPGA PROG_B pin without pull-up resistor. |
| Smart Meter Data Loggers | Automotive Body Control Modules |
Use Scenario: AMI smart meter with backup supercapacitor maintaining RTC and SRAM during AC mains outage. IC Role / Device Role / Timing Role: Monitors 3.0V backup rail; asserts reset to microcontroller when capacitor voltage decays below 2.63V, triggering controlled data save and sleep entry. Use Value: 6.3mV hysteresis prevents oscillation during slow capacitor discharge; SC70-3 package fits tight layout constraints near backup power path. | Use Scenario: BCM controlling door locks, lighting, and window motors, powered from vehicle battery (9V–16V) with internal 5V/3.3V regulators. IC Role / Device Role / Timing Role: Secondary supervisor for 3.3V microcontroller domain, detecting regulator failure or battery sag below 2.63V. Use Value: Immunity to 100µs transients rejects load-dump-induced noise; active-high output matches common automotive MCU reset input polarity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2T+ | 2.93V reset threshold, same SC70-3 package, 1.2µA max ICC, but no guaranteed operation below 1.5V VCC | Requires redesign if system brownout threshold must be 2.63V or lower | Select MAX809TRD2T+ only when 2.93V threshold aligns with system requirements and VCC never falls below 1.5V |
| TPS3808G12DBVR | 2.63V threshold, 1.2µA ICC, SOT23-3 package, but open-drain output requiring external pull-up | Needs additional 10kΩ resistor and board space; incompatible with direct-drive µP reset pins expecting active-high push-pull | Choose TPS3808G12DBVR only when open-drain flexibility is needed for wired-OR reset bus architectures |
Compared with MAX809TRD2T+ and TPS3808G12DBVR, the MAX6327XR26+ uniquely delivers 2.63V precision threshold, active-high push-pull output, and guaranteed sub-1.5V operation - making it optimal for battery-critical systems where reset timing, polarity, and low-voltage robustness are non-negotiable.
Availability
MAX6327XR26+ is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart meter data loggers, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX6327XR26+ 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 in industrial, medical, and communications markets.
The MAX6327XR26+ belongs to the MAX6326/MAX6327/MAX6328 family of ultra-low-power µP supervisors, engineered specifically for battery-operated and energy-sensitive systems requiring deterministic reset behavior under brownout and transient conditions.
FAQ
What is the exact reset threshold voltage of the MAX6327XR26+?
The MAX6327XR26+ has a factory-trimmed nominal reset threshold of 2.63V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +85°C operating temperature range. This value is confirmed in Table 1 of the official datasheet and corresponds to the "R26" suffix in the part number.
Does the MAX6327XR26+ support operation below 2.0V VCC?
Yes, the MAX6327XR26+ is fully specified to operate down to 1.2V VCC across the industrial temperature range, and its reset function remains valid and guaranteed even at 1.2V - a critical feature for deep brownout detection in battery-powered systems.
What is the output configuration of the MAX6327XR26+?
The MAX6327XR26+ features an active-high push-pull RESET output, meaning it drives high during normal operation and actively pulls low only when asserting reset - eliminating the need for an external pull-up resistor and simplifying interface to most modern microcontrollers.
How long is the reset timeout period for the MAX6327XR26+?
The MAX6327XR26+ guarantees a minimum reset timeout of 100ms after VCC rises above the 2.63V threshold, with typical values ranging from 100ms to 280ms depending on temperature and supply conditions - providing ample time for microprocessor initialization and memory stabilization.
Is the MAX6327XR26+ pin-compatible with other members of the MAX632x family?
Yes, the MAX6327XR26+ shares identical SC70-3 pinout and footprint with all MAX6326/MAX6327/MAX6328 variants, including MAX6326XR26+ and MAX6328XR26+, enabling drop-in replacement within the same package type when only reset polarity or output structure differs.
MAX6327XR26+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6327XR26+ FAQ
1.How can I place an order for MAX6327XR26+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327XR26+ 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 MAX6327XR26+ reliable?
The price and inventory of MAX6327XR26+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327XR26+ is usually 5 days.
3.What payment methods are accepted for MAX6327XR26+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327XR26+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327XR26+?
MAX6327XR26+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327XR26+ 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 MAX6327XR26+?
For technical support, including MAX6327XR26+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327XR26+ requirements.
6.How does Aetrix verify that MAX6327XR26+ is sourced from the original manufacturer or authorized distributors?
All MAX6327XR26+ 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 MAX6327XR26+ meets industry standards.
7.What is the process for return or replacement of MAX6327XR26+?
All MAX6327XR26+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327XR26+, 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 MAX6327XR26+ part is unused and in its original packaging.
Return procedure for MAX6327XR26+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6327XR26+ Tags
-
MIC826SYMT-TR
Microchip Technology
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APX803S-31SA-7
Diodes Incorporated
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APX803L20-29SA-7
Diodes Incorporated
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TPS3828-33DBVR
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V6340RSP3B+
EM Microelectronic
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EM6325CXSP5B-2.9+
EM Microelectronic
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MCP120T-300I/TT
Microchip Technology
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MCP130T-315I/TT
Microchip Technology
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MCP120T-475I/TT
Microchip Technology
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MCP111T-300E/TT
Microchip Technology
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MCP120T-315I/TT
Microchip Technology
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MCP809T-315I/TT
Microchip Technology
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