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Analog Devices Inc./Maxim Integrated MAX6327XR22+T
- Part No.:
- MAX6327XR22+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6327XR22+T.pdf
- Description:
- IC MPU/RESET CIRC 2.20V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MAX6327XR22+T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit designed to monitor VCC supply voltage and assert a reset signal during power-up, brownout, or power-down events. It features a factory-trimmed 2.20V reset threshold (±1.5% at +25°C, ±2.5% over -40°C to +85°C), 100ms minimum reset timeout, ultra-low 1µA max supply current, and guaranteed operation down to 1V VCC. It is used in portable battery-powered systems requiring reliable, low-power reset supervision.
For engineers reviewing the MAX6327XR22+T datasheet, MAX6327XR22+T pinout, MAX6327XR22+T application, or MAX6327XR22+T equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in Maxim's official specifications for the SC70-3 packaged device with R22 suffix.
Technical Context
The MAX6327XR22+T implements a precision bandgap-based reset comparator with hysteresis (6.3mV) and internal timing circuitry to guarantee ≥100ms reset assertion after VCC rises above 2.20V. Its active-high push-pull RESET output drives high (≥0.8·VCC) when asserted and low (≤0.4V at 1.2mA sink) when deasserted, eliminating external pull-up components.
It operates across the full industrial temperature range (-40°C to +85°C) with supply current stable under varying VCC (1.2V–5.5V) and temperature, and rejects fast VCC transients via built-in immunity design - confirmed by Maximum Transient Duration vs. Reset Threshold Overdrive characterization curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.20V (factory-trimmed, ±1.5% at +25°C; ±2.5% over -40°C to +85°C) - ensures precise brownout detection for 2.5V/3V systems. |
| Reset Timeout | 100ms minimum - guarantees sufficient processor initialization time after power stabilization. |
| Supply Current | 1.0µA maximum at VCC = 3.0V - enables multi-year battery life in portable instrumentation. |
| Output Type | Active-high push-pull - directly drives µP reset pins without external pull-up resistors. |
| VCC Operating Range | 1.2V to 5.5V - supports supervision of low-voltage logic rails and legacy 5V systems. |
| Reset Hysteresis | 6.3mV - prevents oscillation near threshold during slow VCC ramp-up or noise. |
| Operating Temperature | -40°C to +85°C - qualified for industrial embedded and automotive-adjacent environments. |
Pinout & Package
MAX6327XR22+T is housed in a 3-pin SC70-3 package (outline X3-2, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, RoHS-compliant with lead-free plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output stage; must be connected to system ground plane for accurate threshold sensing. |
| 2 (RESET) | Active-high push-pull reset output | Drives high (≥0.8·VCC) when VCC < 2.20V or during timeout; drives low (≤0.4V) when VCC > 2.20V and timeout complete - directly interfaces µP reset input. |
| 3 (VCC) | Supply voltage input | Power source and monitored rail; accepts 1.2V–5.5V; internal circuitry remains functional down to 1.0V for fail-safe state retention. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1µA supply current | Enables integration into always-on battery-backed systems without measurable drain impact. |
| Factory-trimmed 2.20V threshold | Eliminates external resistor networks or calibration; meets tight tolerance requirements for 2.5V I/O domains. |
| 100ms minimum reset pulse width | Guarantees full µP core and peripheral initialization before release - no external timing capacitor needed. |
| Push-pull active-high output | Reduces BOM count and PCB area by removing pull-up resistor; compatible with standard µP reset inputs. |
| VCC transient immunity | Rejects sub-100µs negative glitches on VCC (per Typical Operating Characteristics), preventing spurious resets. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered handheld glucose meters and ECG monitors that remain in sleep mode for months between measurements. IC Role / Device Role / Timing Role: Supervises 2.5V analog front-end and 3.0V MCU supply; asserts active-high RESET until stable power is confirmed post-wake. Use Value: 1µA max ICC extends shelf life and field runtime; 2.20V threshold aligns precisely with brownout point of low-voltage ADC references. |
Use Scenario: DIN-rail mounted programmable logic controller modules operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Monitors 3.3V FPGA configuration rail and 5V I/O expander supply; provides glitch-immune reset during AC line sags or relay switching transients. Use Value: 6.3mV hysteresis and transient rejection prevent false resets; -40°C to +85°C rating ensures reliability across ambient extremes. |
| Smart Energy Meters | Automotive Body Control Units |
|
Use Scenario: ANSI C12.20-certified electricity meters with dual-supply SoCs (1.8V core, 3.3V interface) and long-term tamper-proof logging. IC Role / Device Role / Timing Role: Primary reset supervisor for 3.3V domain; coordinates with secondary supervisor for cross-rail sequencing. Use Value: Pin-compatible footprint with MAX809 simplifies qualification; tape-and-reel packaging supports high-volume SMT assembly. |
Use Scenario: Non-safety-critical body electronics (power windows, lighting control) powered from vehicle battery (9V–16V nominal, with cranking dips to 6V). IC Role / Device Role / Timing Role: Resets microcontroller upon battery recovery after cold-crank event; tolerates VCC down to 1.2V during dip. Use Value: Guaranteed correct state at 1V VCC ensures deterministic reset behavior even during deep undervoltage; SC70-3 saves space in dense BCM layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 2.32V reset threshold, same SC70-3 package, 1.0µA ICC, but only specified for VCC ≥ 1.0V (no 1V guarantee); ±2% threshold accuracy. | Lacks guaranteed 1V operation and tighter 2.20V threshold; suitable where margin allows higher trip point. | Select MAX809TRD3+T only if system brownout threshold is ≥2.3V and 1V fail-safe behavior is not required. |
| TPS3808G12QDBVRQ1 | 2.20V threshold, AEC-Q100 Grade 2 qualified (-40°C to +105°C), 1.8µA ICC, open-drain output - requires external pull-up. | Designed for automotive environments with extended temp range; open-drain limits direct µP compatibility without added component. | Choose TPS3808G12QDBVRQ1 when AEC-Q100 compliance and +105°C operation are mandatory, and board layout accommodates pull-up. |
Compared with MAX6327XR22+T, MAX809TRD3+T offers looser threshold accuracy and no 1V guarantee, while TPS3808G12QDBVRQ1 adds automotive qualification but introduces open-drain complexity - making MAX6327XR22+T optimal for industrial/portable designs needing precise 2.20V, 1µA, and push-pull simplicity.
Availability
MAX6327XR22+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart energy meters requiring stable component supply, long-lifecycle support, and RoHS-compliant SC70 packaging.
Supply support for MAX6327XR22+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 industrial, computing, and communications markets, with emphasis on power management, sensing, and interface solutions.
The MAX6327XR22+T belongs to Maxim's µP supervisory circuit product line, engineered specifically for low-power, high-accuracy reset generation in battery-operated and industrial embedded systems - prioritizing supply current, threshold precision, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of MAX6327XR22+T and how tightly is it specified?
The MAX6327XR22+T has a factory-trimmed nominal reset threshold of 2.20V. At +25°C, it is guaranteed within ±1.5% (2.167V to 2.233V). Over the full -40°C to +85°C operating range, the threshold remains within ±2.5% (2.145V to 2.250V). This precision eliminates need for external calibration and ensures consistent brownout response in 2.5V systems.
Does MAX6327XR22+T support operation below 2.5V, and what is its minimum functional VCC?
Yes, MAX6327XR22+T is fully specified down to 1.2V VCC and guaranteed to maintain correct reset state (i.e., assert RESET when VCC falls below 2.20V) even at 1.0V. This makes it suitable for ultra-low-voltage applications such as energy-harvesting nodes or backup power domains where supply may dip below standard logic rails.
How does the active-high push-pull output of MAX6327XR22+T simplify system design compared to open-drain alternatives?
The active-high push-pull output of MAX6327XR22+T drives both high and low states internally - delivering ≥0.8·VCC when asserted and ≤0.4V when deasserted - so no external pull-up resistor is needed. This reduces BOM count, saves PCB area, avoids pull-up leakage errors, and ensures faster, more deterministic reset release than open-drain equivalents like MAX6328.
Is MAX6327XR22+T pin-compatible with other members of the MAX632x family or legacy supervisors?
Yes, MAX6327XR22+T shares identical SC70-3 pinout (GND, RESET, VCC) with all MAX6326/MAX6327/MAX6328 variants and is pin-compatible with MAX803/MAX809/MAX810 in the same package. This allows drop-in replacement where active-high reset and 2.20V threshold meet system requirements - no PCB redesign needed.
What is the guaranteed reset timeout duration of MAX6327XR22+T, and how is it maintained across temperature?
MAX6327XR22+T guarantees a minimum reset timeout of 100ms after VCC rises above the 2.20V threshold, with typical values ranging from 100ms to 280ms depending on temperature and process variation. The internal timer is designed to remain stable across -40°C to +85°C, ensuring reliable µP initialization regardless of ambient conditions.
MAX6327XR22+T 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:
- 2.2V
- 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
MAX6327XR22+T FAQ
1.How can I place an order for MAX6327XR22+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327XR22+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 MAX6327XR22+T reliable?
The price and inventory of MAX6327XR22+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327XR22+T is usually 5 days.
3.What payment methods are accepted for MAX6327XR22+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327XR22+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327XR22+T?
MAX6327XR22+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327XR22+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 MAX6327XR22+T?
For technical support, including MAX6327XR22+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327XR22+T requirements.
6.How does Aetrix verify that MAX6327XR22+T is sourced from the original manufacturer or authorized distributors?
All MAX6327XR22+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 MAX6327XR22+T meets industry standards.
7.What is the process for return or replacement of MAX6327XR22+T?
All MAX6327XR22+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327XR22+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 MAX6327XR22+T part is unused and in its original packaging.
Return procedure for MAX6327XR22+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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