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Analog Devices Inc./Maxim Integrated MAX6332UR24D1-T
- Part No.:
- MAX6332UR24D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6332UR24D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,467
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Product details
Overview
MAX6332UR24D1-T from Maxim Integrated is an ultra-low-voltage, push/pull active-high microprocessor supervisory circuit in a 3-pin SOT23 package. It monitors 1.8V–3.3V power supplies, asserts a high-level RESET signal when VCC falls below 2.40V (±1.8% at +25°C), and holds it for ≥1ms after VCC recovers-ensuring reliable boot sequencing in battery-powered controllers and portable instrumentation.
For engineers reviewing the MAX6332UR24D1-T datasheet, MAX6332UR24D1-T pinout, MAX6332UR24D1-T application, or MAX6332UR24D1-T equivalent, key selection criteria include its 0.7V minimum operating voltage, 3.3µA supply current, factory-trimmed 2.4V reset threshold, and guaranteed RESET validity down to VCC = 0.7V-critical for low-power embedded systems with brownout resilience requirements.
Technical Context
The MAX6332UR24D1-T implements a precision bandgap-based reset comparator with ±1.8% initial accuracy at +25°C and ±3% over –40°C to +125°C. Its internal timeout generator delivers a fixed ≥1ms reset pulse width, independent of external components.
Designed for direct integration into space-constrained μP systems, it features rail-to-rail push/pull output drive (VOH = 0.8×VCC, VOL ≤ 0.3V), immunity to fast VCC transients (<24µs at 10V/ms), and guaranteed functional operation from VCC = 0.7V-enabling robust reset assertion during deep brownouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±1.8% at +25°C; ensures precise 2.4V supply monitoring for 2.5V logic domains |
| Reset Timeout Period | ≥1ms minimum; guarantees sufficient hold time for μP initialization without external timing components |
| Supply Voltage Range | 0.7V to 5.5V; supports operation during severe brownouts and compatibility with 1.8V/2.5V/3.3V rails |
| Supply Current | 3.3µA typical at 2.5V; enables multi-year battery life in always-on monitoring applications |
| Operating Temperature | –40°C to +125°C; qualified for industrial and automotive under-hood environments |
| Output Type | Active-high push/pull; drives high-impedance μP reset inputs directly without pull-up resistors |
| VCC Falling Propagation Delay | 24µs maximum; rejects sub-25µs supply glitches while responding promptly to sustained undervoltage |
Pinout & Package
Supplied in a RoHS-compliant 3-pin SOT23 package (U3+1 outline, 90-0179 land pattern), the MAX6332UR24D1-T uses a compact footprint ideal for portable and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Active-high push/pull output; asserts high during VCC undervoltage and ≥1ms recovery window |
| 3 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.7V operating voltage | Enables reset assertion even during extreme brownout conditions where most supervisors fail |
| Factory-trimmed 2.4V reset threshold | Eliminates external resistor networks and calibration; reduces BOM count and layout area |
| 1ms minimum reset timeout | Meets JEDEC JESD76 requirements for μP power-on reset duration without timing capacitors |
| 3.3µA supply current | Reduces quiescent power in always-on monitoring circuits-critical for coin-cell and energy-harvesting designs |
| Transient-immune reset comparator | Rejects <24µs negative VCC spikes, preventing spurious resets in noisy power environments |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and ECG patches requiring continuous power monitoring during intermittent charging cycles. IC Role / Device Role / Timing Role: Active-high reset supervisor ensuring μC remains held in reset until stable 2.4V rail is established post-battery insertion or charge recovery. Use Value: 0.7V operating capability prevents false wake-up during low-battery discharge; 3.3µA ICC extends single-charge runtime by >15% versus higher-current alternatives. |
Use Scenario: DIN-rail mounted programmable logic controller modules exposed to wide ambient temperature swings and 24VDC field power fluctuations. IC Role / Device Role / Timing Role: Primary power-good monitor asserting active-high RESET to ARM Cortex-M7 core during 24V-to-3.3V DC/DC startup and brownout events. Use Value: –40°C to +125°C qualification ensures deterministic reset behavior across industrial temperature range; 2.4V threshold matches 2.5V LDO output tolerance. |
| Smart Energy Meters | Automotive Body Control Modules |
Use Scenario: ANSI C12.20-compliant electricity meters with dual-supply (3.3V logic, 1.8V RTC) and tamper-detection circuitry. IC Role / Device Role / Timing Role: Dedicated 2.4V supervisor for main μP domain, coordinating with separate 1.8V supervisor to sequence power-up of metering ASIC and secure bootloader. Use Value: Pin-compatible replacement for MAX809 simplifies legacy design refresh; 1ms timeout satisfies ANSI requirement for minimum reset pulse width. |
Use Scenario: CAN-connected door module with LIN transceiver, LED drivers, and EEPROM, powered from vehicle battery (9V–16V) via buck regulator. IC Role / Device Role / Timing Role: Reset generator for Infineon AURIX TC3xx safety MCU, asserting high-level RESET during cold-crank (6.5V) and load-dump recovery. Use Value: Guaranteed RESET validity down to VCC = 0.7V ensures deterministic state capture during cranking dips; SOT23-3 footprint minimizes PCB real estate in tight module housings. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1-T | 2.63V reset threshold, 140ms timeout, same SOT23-3 package and push/pull output | Higher threshold suits 3.3V systems; longer timeout accommodates slower power supplies | Select when system requires tighter margin above 2.5V rail or extended reset hold for FPGA configuration |
| TPS3808G125DBVR | 2.5V threshold, 200ms timeout, adjustable delay via capacitor, 1.5µA ICC | Lower quiescent current but requires external timing component; not pin-compatible | Choose for ultra-low-power applications where board space allows capacitor placement and longer reset is acceptable |
Compared with MAX809TRD1-T and TPS3808G125DBVR, the MAX6332UR24D1-T offers the optimal balance of precise 2.4V threshold matching 2.5V LDO outputs, minimal 1ms timeout for fast-boot systems, and zero external components-making it ideal for cost-sensitive, space-constrained portable and industrial controllers.
Availability
MAX6332UR24D1-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6332UR24D1-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) is a semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, automotive, communications, and computing applications.
The MAX6332 series belongs to Maxim's precision supervisory circuit product line, engineered specifically for ultra-low-voltage, low-power microprocessor reset applications in battery-operated and harsh-environment systems.
FAQ
What is the exact reset threshold voltage of the MAX6332UR24D1-T?
The MAX6332UR24D1-T has a factory-trimmed nominal reset threshold of 2.40V, with ±1.8% tolerance at +25°C and ±3% over the full –40°C to +125°C operating range. This value is confirmed in Table 1 of the official datasheet and applies specifically to the "UR24" suffix variant of the MAX6332 family.
Does the MAX6332UR24D1-T require any external components to function?
No, the MAX6332UR24D1-T operates autonomously with no external components required. Its internal precision voltage reference, comparator, and timeout generator eliminate the need for external resistors, capacitors, or trimming networks-reducing BOM cost and PCB area while improving reliability.
What is the minimum supply voltage at which the MAX6332UR24D1-T guarantees correct reset output behavior?
The MAX6332UR24D1-T guarantees correct RESET output state down to VCC = 0.7V across the full temperature range, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic reset assertion during deep brownout conditions where other supervisors may fail.
Is the MAX6332UR24D1-T pin-compatible with other common reset ICs?
Yes, the MAX6332UR24D1-T is pin-compatible with the MAX809/MAX810 and MAX6326/MAX6327/MAX6328 families in the SOT23-3 package. Pin 1 = GND, Pin 2 = RESET (active-high), Pin 3 = VCC-enabling drop-in replacement in existing layouts designed for those parts.
What does the "D1" suffix in MAX6332UR24D1-T indicate?
Within the MAX6332 naming convention, the "D1" suffix specifies a nominal reset timeout period of 1ms minimum. The "D2" and "D3" variants provide 20ms and 100ms minimum timeouts respectively-allowing designers to select the precise reset duration needed for their target microprocessor's boot requirements.
MAX6332UR24D1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.4V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6332UR24D1-T FAQ
1.How can I place an order for MAX6332UR24D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR24D1-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 MAX6332UR24D1-T reliable?
The price and inventory of MAX6332UR24D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR24D1-T is usually 5 days.
3.What payment methods are accepted for MAX6332UR24D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6332UR24D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6332UR24D1-T?
MAX6332UR24D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR24D1-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 MAX6332UR24D1-T?
For technical support, including MAX6332UR24D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR24D1-T requirements.
6.How does Aetrix verify that MAX6332UR24D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6332UR24D1-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 MAX6332UR24D1-T meets industry standards.
7.What is the process for return or replacement of MAX6332UR24D1-T?
All MAX6332UR24D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR24D1-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 MAX6332UR24D1-T part is unused and in its original packaging.
Return procedure for MAX6332UR24D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6332UR24D1-T Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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