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Analog Devices Inc./Maxim Integrated MAX6327XR23
- Part No.:
- MAX6327XR23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6327XR23.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,085
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Product details
Overview
MAX6327XR23 from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit designed to monitor 2.32V power supplies and assert a reset signal during brownout, power-up, and power-down events. It guarantees correct operation down to VCC = 1.2V, delivers ≤1µA supply current at +25°C, maintains ≥100ms reset timeout after VCC recovery, and is housed in a 3-pin SC70-3 package for space-constrained embedded systems.
For engineers reviewing the MAX6327XR23 datasheet, MAX6327XR23 pinout, MAX6327XR23 application, or MAX6327XR23 equivalent, this page provides verified technical context, exact pin functions, real-world use cases in portable and industrial µP systems, and validated alternative options with documented functional and application-level differences.
Technical Context
The MAX6327XR23 implements a precision voltage comparator with factory-trimmed 2.32V reset threshold (±1.5% at +25°C, ±2.5% over –40°C to +85°C), 40ppm/°C tempco, and 6.3mV hysteresis to prevent chatter near threshold. Its reset assertion logic holds RESET high while VCC remains below VTH and sustains it for ≥100ms after VCC rises above VTH.
It features ultra-low ICC ≤1.0µA (max) across full temperature range, immunity to fast VCC transients (up to 100V/µs), and operates from 1.2V to 5.5V supply - enabling reliable supervision in battery-powered and low-voltage digital systems without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.32V (factory-trimmed, ±1.5% @ +25°C); ensures precise brownout detection for 2.5V/3V systems operating near lower rail. |
| Supply Current | ≤1.0µA max (@ –40°C to +85°C); enables multi-year battery life in portable instrumentation and remote sensors. |
| Reset Timeout | 100–280ms min–max; guarantees sufficient µP initialization time after power stabilization, meeting JEDEC JESD78 requirements. |
| Output Type | Active-high push-pull; drives RESET directly without pull-up resistor, simplifying interface with µP reset inputs requiring high-true assertion. |
| VCC Operating Range | 1.2V to 5.5V; supports supervision of modern low-voltage SoCs and legacy 5V logic simultaneously. |
| Temp Range | –40°C to +85°C; qualified for industrial and automotive under-hood peripheral applications. |
| Package | SC70-3 (3-pin); 2.0mm × 2.1mm footprint, compatible with high-density PCB layouts and reflow assembly. |
Pinout & Package
MAX6327XR23 uses a 3-pin SC70-3 package with exposed pad not electrically connected. Pin 1 = GND, Pin 2 = RESET (active-high push-pull output), Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection to system ground plane. |
| 2 | RESET | Active-high push-pull output; sources up to 500µA at 0.8·VCC when asserted, sinks up to 1.2mA when deasserted - eliminates need for external pull-up. |
| 3 | VCC | Power input; accepts 1.2V–5.5V; powers internal circuitry and defines reset threshold reference via bandgap-derived scaling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | ≤1.0µA max over full temperature range - extends battery runtime in handheld medical devices and IoT edge nodes. |
| Precision VTH | 2.32V ±2.5% over –40°C to +85°C - ensures consistent reset behavior across environmental stress without calibration. |
| Transient Immunity | Immune to VCC glitches ≤200mV overdrive for durations <10µs - prevents false resets during switching noise or ESD events. |
| No External Components | Self-contained supervision - reduces BOM count, PCB area, and qualification effort versus discrete RC+comparator solutions. |
| Push-Pull Output | Drives RESET high actively - avoids timing uncertainty and leakage issues associated with open-drain + pull-up configurations. |
Applications
| Battery-Powered Data Loggers | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Long-term field deployment logging sensor data on coin-cell or Li-ion batteries with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Supervises µC VCC during deep-sleep wake-up transitions and detects battery sag below 2.32V to trigger controlled shutdown. Use Value: 1µA max ICC preserves battery capacity; 100ms minimum reset pulse ensures reliable µC boot after voltage recovery from load transients. |
Use Scenario: DIN-rail mounted programmable logic controller modules operating in factory environments with noisy 24V DC supplies. IC Role / Device Role / Timing Role: Monitors local 3.3V FPGA or ARM Cortex-M supply derived from industrial DC-DC converter; asserts active-high RESET to halt execution during undervoltage. Use Value: Factory-trimmed 2.32V threshold matches typical 3.3V LDO dropout margin; SC70 package fits tight spacing between isolation barriers and signal conditioning ICs. |
| Medical Handheld Diagnostics | Smart Energy Meters |
Use Scenario: Portable blood glucose or ECG analyzers requiring FDA-grade reliability and >5-year shelf life. IC Role / Device Role / Timing Role: Guarantees clean µP reset during cold-start from depleted battery and prevents erratic behavior during RF transmission-induced supply dips. Use Value: Guaranteed operation down to VCC = 1.2V allows safe reset assertion even as battery discharges to end-of-life; push-pull output avoids weak pull-up failure modes. |
Use Scenario: ANSI C12.20-compliant electricity meters deployed in utility substations with wide ambient temperature swings. IC Role / Device Role / Timing Role: Supervises metrology SoC's 2.5V analog supply and digital 3.3V core rail; provides synchronized reset to both domains upon AC line interruption. Use Value: ±2.5% VTH tolerance over –40°C to +85°C ensures deterministic reset across desert and arctic deployments; no external components reduce field failure risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6327UR23-T | Same electrical specs and reset threshold, but in SOT23-3 package (2.92mm × 1.3mm vs SC70's 2.0mm × 2.1mm); higher thermal resistance (4mW/°C derating vs 2.7mW/°C). | Suitable where board layout accommodates larger footprint and thermal management favors SOT23's higher power dissipation rating (320mW vs 174mW). | Select MAX6327UR23-T if existing SOT23 land pattern is fixed and thermal load exceeds SC70 limits. |
| MAX809TR23-T | Same 2.32V threshold and active-high push-pull output, but higher ICC (≤10µA) and no guaranteed operation below 1.8V; lacks transient immunity spec beyond 100V/µs. | Valid for cost-sensitive consumer electronics where extended low-VCC operation and glitch rejection are non-critical. | Choose MAX809TR23-T only for non-battery, non-industrial applications with stable 3.3V supplies and no requirement for sub-1.8V supervision. |
Compared with MAX6327XR23, the MAX6327UR23-T offers identical functionality in a thermally robust but larger package, while the MAX809TR23-T trades ultra-low power and wide-VCC operation for lower unit cost - making MAX6327XR23 optimal for space-constrained, long-life, and wide-supply applications.
Availability
MAX6327XR23 is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial control modules, and portable medical diagnostics requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability.
Supply support for MAX6327XR23 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, mixed-signal, and power management ICs for industrial, medical, communications, and computing applications.
The MAX6326/MAX6327/MAX6328 family delivers ultra-low-power, factory-trimmed µP reset supervision for space- and energy-constrained systems - targeting portable, battery-operated, and harsh-environment embedded controllers.
FAQ
What is the exact reset threshold voltage of MAX6327XR23 and how tightly is it specified?
The MAX6327XR23 has a factory-trimmed nominal reset threshold of 2.32V. At +25°C, this is guaranteed within ±1.5% (2.285V to 2.355V). Over the full operating temperature range of –40°C to +85°C, the threshold remains within ±2.5% (2.262V to 2.375V), ensuring predictable brownout response across environmental conditions. This specification is measured and guaranteed per the datasheet's Electrical Characteristics table.
Does MAX6327XR23 require any external components to function?
No, MAX6327XR23 requires no external components. It integrates the voltage reference, comparator, timer, and push-pull output driver into a single 3-pin SC70-3 package. Unlike RC-based reset circuits, MAX6327XR23 delivers precise, temperature-stable reset timing without resistors, capacitors, or trimming adjustments - reducing BOM count and improving long-term reliability.
What is the maximum supply voltage the MAX6327XR23 can tolerate on its VCC pin?
The MAX6327XR23 supports a VCC supply range of 1.2V to 5.5V under normal operation. Its absolute maximum rating for VCC is +6V, but sustained operation above 5.5V may cause permanent damage. The device is fully specified and guaranteed over the 1.2V–5.5V range, including reset behavior, supply current, and output drive strength - making it suitable for both low-voltage microcontrollers and legacy 5V systems.
How does the MAX6327XR23 handle fast voltage transients on the VCC line?
The MAX6327XR23 is designed to ignore fast negative-going VCC transients: it suppresses reset assertion for glitches with amplitude less than VTH – VCC ≤ 200mV and duration <10µs (per Typical Operating Characteristics graphs). This immunity prevents spurious resets caused by switching noise, ESD coupling, or regulator ripple - a key reliability feature confirmed in the datasheet's Applications Information section.
Is MAX6327XR23 pin-compatible with other members of the MAX632x family?
Yes, MAX6327XR23 shares identical pinout (GND, RESET, VCC) and package (SC70-3) with all MAX6326/MAX6327/MAX6328 variants. The only functional difference is the reset threshold voltage suffix (R23 = 2.32V) and output polarity - MAX6327XR23 is active-high push-pull, whereas MAX6326XR23 is active-low push-pull and MAX6328XR23 is active-low open-drain. No PCB changes are needed when swapping within the same output-type group.
MAX6327XR23 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.32V
- 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
MAX6327XR23 FAQ
1.How can I place an order for MAX6327XR23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327XR23 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 MAX6327XR23 reliable?
The price and inventory of MAX6327XR23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327XR23 is usually 5 days.
3.What payment methods are accepted for MAX6327XR23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327XR23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327XR23?
MAX6327XR23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327XR23 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 MAX6327XR23?
For technical support, including MAX6327XR23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327XR23 requirements.
6.How does Aetrix verify that MAX6327XR23 is sourced from the original manufacturer or authorized distributors?
All MAX6327XR23 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 MAX6327XR23 meets industry standards.
7.What is the process for return or replacement of MAX6327XR23?
All MAX6327XR23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327XR23, 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 MAX6327XR23 part is unused and in its original packaging.
Return procedure for MAX6327XR23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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