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Analog Devices Inc./Maxim Integrated MAX6327XR30
- Part No.:
- MAX6327XR30
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6327XR30.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,299
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Product details
Overview
MAX6327XR30 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 3.00V (±1.5% at +25°C), maintaining reset for ≥100ms after recovery; designed for 2.5V/3V/3.3V/5V digital systems with ultra-low 1µA max supply current and operation down to 1.2V VCC; used in portable equipment, controllers, and critical µP power monitoring.
For engineers reviewing the MAX6327XR30 datasheet, MAX6327XR30 pinout, MAX6327XR30 application, or MAX6327XR30 equivalent, this page delivers verified technical context, exact reset threshold behavior, SC70-3 package details, real-world timing performance across temperature, and validated alternative options for µP reset supervision in battery-powered and industrial embedded designs.
Technical Context
The MAX6327XR30 implements a precision bandgap-based reset comparator with factory-trimmed 3.00V threshold (±2.5% over –40°C to +85°C) and 40ppm/°C tempco, ensuring stable trip points across operating conditions. Its active-high push-pull RESET output sources ≥500µA at 0.8·VCC while asserted and sinks ≤1.2mA when deasserted, eliminating need for external pull-up resistors.
It features built-in immunity to fast VCC transients-rejecting negative glitches up to 200µs at 100mV overdrive-and guarantees correct logic state down to 1.2V VCC. The device requires no external components, integrates hysteresis of 6.3mV, and delivers a minimum 100ms power-on reset timeout with monotonic delay vs. temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±1.5% at +25°C; ±2.5% over –40°C to +85°C - ensures reliable brownout detection for 3V systems without recalibration. |
| Supply Current | ≤1.0µA max at 3V - enables multi-year battery life in portable instrumentation and remote sensors. |
| Reset Timeout | 100ms to 280ms min–max over temperature - guarantees sufficient µP initialization time after power stabilization. |
| VCC Operating Range | 1.2V to 5.5V - supports operation during deep brownout and compatibility with wide-input LDOs. |
| Output Type | Active-high push-pull - drives reset lines directly without external pull-up, reducing BOM count and layout area. |
| Transient Immunity | Rejects VCC glitches ≤200µs at 100mV overdrive - prevents false resets in noisy power environments. |
| Hysteresis | 6.3mV - provides noise margin to avoid oscillatory reset assertion near threshold. |
Pinout & Package
MAX6327XR30 is housed in a 3-pin SC70-3 package (outline X3-2, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, with gull-wing leads and RoHS-compliant lead-free finish (marked "FNAA" on top).
| 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; drives high (≥0.8·VCC) during reset assertion and low (<0.4V) when deasserted - directly interfaces µP reset pins. |
| 3 | VCC | Power supply input; accepts 1.2V–5.5V; powers internal circuitry and defines output voltage levels. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1µA max enables >10-year battery life in coin-cell–powered IoT endpoints and handheld meters. |
| Precision factory-trimmed threshold | 3.00V ±1.5% at +25°C eliminates manual calibration and reduces test time in production. |
| Guaranteed operation down to 1.2V VCC | Ensures deterministic reset behavior during deep undervoltage events before complete power collapse. |
| No external components required | Reduces PCB area by ≥2mm² and eliminates risk of resistor/capacitor drift or solder defects. |
| SC70-3 footprint compatibility | Shares land pattern with MAX809/MAX810 family - allows drop-in replacement in existing layouts. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose meters and pulse oximeters operating from single Li-ion or coin cells with variable discharge profiles. IC Role / Device Role / Timing Role: Supervises VCC during battery aging and load transients; asserts active-high RESET to hold µC in reset until stable 3.0V rail is established. Use Value: Prevents firmware corruption during brownout by guaranteeing ≥100ms reset hold time even as battery drops from 3.6V to 2.8V. |
Use Scenario: DIN-rail mounted I/O modules exposed to 24VDC supply ripple and EMI in factory automation cabinets. IC Role / Device Role / Timing Role: Monitors local 3.3V LDO output feeding FPGA configuration logic; rejects <200µs supply glitches induced by relay switching. Use Value: Eliminates spurious reconfiguration events by providing transient-immune reset supervision with 6.3mV hysteresis. |
| Smart Energy Meters | Automotive Body Control Units |
|
Use Scenario: ANSI C12.22-compliant electricity meters with dual-supply (battery + mains) and cold-start requirements. IC Role / Device Role / Timing Role: Provides power-on reset for ARM Cortex-M0 host MCU using 3.0V threshold aligned with RTC backup domain voltage. Use Value: Ensures deterministic boot sequence across –40°C to +85°C with ±2.5% threshold tolerance and 40ppm/°C stability. |
Use Scenario: Non-safety-critical BCM submodules (e.g., mirror control, ambient lighting) powered from vehicle 12V via 3.3V buck converter. IC Role / Device Role / Timing Role: Resets microcontroller during ignition cycling and load-dump recovery; operates reliably down to 1.2V VCC during cranking. Use Value: Avoids lockup during engine start by maintaining valid reset state through 6V–16V input transients without external support circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TR30D3T | Same 3.0V threshold and SC70-3 package, but active-low open-drain output requiring external pull-up; 1.5µA max ICC. | Suitable where system reset logic is active-low and board space allows 10kΩ pull-up; not direct replacement due to output polarity and drive type. | Select only if redesign accommodates active-low signaling and added component. |
| TPS3808G30DBVR | 3.0V threshold, active-high push-pull, but 2.5µA max ICC and 200ms min timeout; SOT23-3 package with different pinout (VCC/RESET/GND vs. GND/RESET/VCC). | Better suited for higher-current 3.3V systems where longer reset duration is acceptable; incompatible pin mapping prevents drop-in use. | Choose for new designs prioritizing TI's long-term availability; requires PCB layout change. |
Compared with MAX6327XR30, MAX809TR30D3T demands external biasing and alters reset polarity, while TPS3808G30DBVR offers longer timeout but mandates pinout revision and increases quiescent current threefold-making MAX6327XR30 optimal for ultra-low-power, pin-compatible upgrades in legacy SC70-based µP supervision.
Availability
MAX6327XR30 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply, long-lifecycle support, and guaranteed factory-trimmed reset accuracy.
Supply support for MAX6327XR30 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 industrial, computing, and communications applications, with emphasis on power management, sensing, and interface solutions.
The MAX6326/MAX6327/MAX6328 family was engineered specifically for ultra-low-power microprocessor reset supervision in space-constrained, battery-sensitive systems-delivering factory-trimmed thresholds, sub-µA operation, and robust transient immunity in SC70/SOT23 packages.
FAQ
What is the exact reset threshold voltage for MAX6327XR30 and how does it vary with temperature?
The MAX6327XR30 has a nominal reset threshold of 3.00V at +25°C, with ±1.5% tolerance at room temperature and ±2.5% over the full –40°C to +85°C range. Its temperature coefficient is 40ppm/°C, meaning threshold drift is limited to ±0.012V across the operating range. This specification is guaranteed by design and confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6327XR30 require any external components to function?
No, MAX6327XR30 operates autonomously with no external components required. It integrates the voltage reference, comparator, timer, and push-pull output driver in a single SC70-3 package. Unlike open-drain alternatives, its active-high push-pull RESET output eliminates the need for an external pull-up resistor, simplifying layout and reducing BOM count.
What is the minimum VCC voltage at which MAX6327XR30 guarantees correct reset state?
MAX6327XR30 guarantees correct reset assertion and deassertion behavior down to 1.2V VCC over the full –40°C to +85°C temperature range. This ensures reliable operation during deep brownout conditions, such as battery voltage sag during cold cranking in automotive applications or end-of-life discharge in portable devices.
How does MAX6327XR30 handle fast transients on the VCC line?
MAX6327XR30 incorporates internal filtering to reject fast negative-going VCC transients: it ignores glitches ≤200µs wide when the overdrive (VTH – VCC) is 100mV, per the Typical Operating Characteristics graph. This immunity prevents false resets caused by switching noise, relay bounce, or load-dump events in industrial and automotive power systems.
Is MAX6327XR30 pin-compatible with other members of the MAX632x family or legacy supervisors?
Yes, MAX6327XR30 shares identical SC70-3 pinout (GND/RESET/VCC) with all MAX6326/MAX6327/MAX6328 variants and is pin-compatible with MAX809/MAX810 in the same package. However, output polarity differs: MAX6327XR30 is active-high push-pull, whereas MAX6326/MAX6328 are active-low-requiring logic-level verification before substitution.
MAX6327XR30 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:
- 3V
- 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
MAX6327XR30 FAQ
1.How can I place an order for MAX6327XR30 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327XR30 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 MAX6327XR30 reliable?
The price and inventory of MAX6327XR30 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327XR30 is usually 5 days.
3.What payment methods are accepted for MAX6327XR30?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327XR30 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327XR30?
MAX6327XR30 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327XR30 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 MAX6327XR30?
For technical support, including MAX6327XR30 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327XR30 requirements.
6.How does Aetrix verify that MAX6327XR30 is sourced from the original manufacturer or authorized distributors?
All MAX6327XR30 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 MAX6327XR30 meets industry standards.
7.What is the process for return or replacement of MAX6327XR30?
All MAX6327XR30 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327XR30, 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 MAX6327XR30 part is unused and in its original packaging.
Return procedure for MAX6327XR30:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6327XR30 Tags
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MIC826SYMT-TR
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