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Analog Devices Inc./Maxim Integrated MAX6332UR23D3+T
- Part No.:
- MAX6332UR23D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6332UR23D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,297
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Product details
Overview
The MAX6332UR23D3+T from Maxim Integrated is a push/pull, active-high microprocessor supervisory circuit in SOT23-3 package, designed to monitor 1.8V–3.3V power supplies and assert RESET when VCC falls below 2.30V (±1.8% at +25°C), with a guaranteed 100ms minimum timeout after recovery. It operates down to 0.7V supply and draws only 3.0–6.0µA at 1.8V, enabling reliable reset generation in ultra-low-power embedded systems.
For engineers reviewing the MAX6332UR23D3+T datasheet, MAX6332UR23D3+T pinout, MAX6332UR23D3+T application, or MAX6332UR23D3+T equivalent, key selection criteria include its active-high push/pull output, factory-trimmed 2.30V threshold, 100ms reset timeout, 0.7V operating limit, and SOT23-3 footprint compatibility with MAX809/MAX6326 families.
Technical Context
This device implements a precision bandgap-based voltage comparator with hysteresis and an internal timer for fixed-duration reset assertion. The reset comparator ignores transients ≤24µs at 10V/ms slew rate, ensuring immunity to fast supply glitches. Its push/pull output drives high (≥0.8×VCC) during reset and low (≤0.3V at 1.2mA sink) otherwise, eliminating external pull-up components.
The MAX6332UR23D3+T is fully specified across –40°C to +125°C, with reset threshold tolerance tightened to ±3% over temperature and supply current stable across voltage and temperature. Its 3-pin topology integrates all supervision logic-no external capacitors, resistors, or trimming required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.30V ±1.8% at +25°C; ±3% over –40°C to +125°C - ensures precise brownout detection for 2.3V nominal rails |
| Reset Timeout Period | 100ms minimum - guarantees sufficient processor initialization time after power recovery |
| Supply Voltage Range | 0.7V to 5.5V - supports operation during deep brownout and enables use with 1.8V/2.5V/3.3V systems |
| Supply Current | 3.0–6.0µA at 1.8V - minimizes quiescent load on battery or low-power rails |
| Output Type | Active-high push/pull - directly drives CMOS inputs without external pull-up; compatible with bidirectional μP reset pins when used with pull-down |
| Operating Temperature | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Package | SOT23-3 - 2.92mm × 1.3mm footprint; pin-compatible with industry-standard 3-pin reset supervisors |
Pinout & Package
SOT23-3 package with gull-wing leads, 1.9mm body width, 0.95mm lead pitch, and RoHS-compliant lead-free finish (+T suffix). Thermal pad not present; standard reflow profile applies (260°C peak).
| 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; driven high during reset assertion and low otherwise; sinks up to 1.2mA |
| 3 | VCC | Power supply input (0.7V–5.5V); powers internal circuitry and defines reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.7V operating voltage | Enables valid reset assertion even during severe brownout conditions where most supervisors fail |
| Factory-trimmed 2.30V threshold | Eliminates external resistor networks and calibration; achieves ±1.8% accuracy at room temperature |
| 100ms minimum reset timeout | Guarantees full microcontroller initialization before release, preventing premature execution |
| Transient-immune comparator | Rejects VCC glitches ≤24µs duration, avoiding spurious resets in noisy power environments |
| No external components required | Reduces BOM count, PCB area, and qualification effort-fully functional with only VCC, GND, and RESET connections |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Power monitoring in programmable logic controllers exposed to wide ambient temperature swings and supply ripple. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to hold CPU in reset until 2.30V rail stabilizes post-brownout. Use Value: Guarantees deterministic startup at –40°C to +125°C with no external timing components, reducing design risk in safety-critical control loops. |
Use Scenario: Reset management for microcontrollers in door modules, seat controllers, and lighting ECUs powered by vehicle battery (9V–16V) with LDO regulation. IC Role / Device Role / Timing Role: Monitors regulated 2.5V/3.3V domain and asserts RESET during cold-crank voltage sag below 2.30V. Use Value: 0.7V operating limit ensures reset remains valid through deep cranking events (<6V battery), preventing firmware corruption. |
| Portable Medical Sensors | Smart Energy Meters |
Use Scenario: Battery-powered glucose monitors and pulse oximeters requiring long shelf life and reliable wake-from-reset behavior. IC Role / Device Role / Timing Role: Active-high RESET supervisor tied to 1.8V LDO output, holding MCU in reset until stable power is confirmed. Use Value: 3.0µA typical supply current extends battery life; 100ms timeout accommodates slow LDO settling in low-noise analog sections. |
Use Scenario: Metering ICs and communication modems in ANSI C12.22-compliant electricity meters subject to utility grid transients. IC Role / Device Role / Timing Role: Primary reset source for dual-core meter SoC, detecting brownouts caused by lightning-induced surges on AC input. Use Value: Transient immunity (≤24µs rejection) prevents false resets during line noise, while ±3% threshold stability ensures consistent trip points over 15-year field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR23D3+T | Same 2.30V threshold and 100ms timeout, but active-low push/pull output; identical 0.7V min VCC and SOT23-3 package | Requires redesign of reset logic polarity (e.g., inverter or μP configuration change) due to active-low assertion | Select when system architecture mandates active-low reset signaling and board layout allows polarity adaptation |
| TPS3123E18DBVR | 2.63V fixed threshold (not 2.30V); 200ms timeout; 1.6V min VCC (not 0.7V); same SOT23-3 footprint | Higher trip point and longer timeout may delay system boot; 1.6V min VCC limits brownout coverage | Choose only if 2.63V threshold aligns with system rail tolerance and 0.7V operation is not required |
Compared with MAX6332UR23D3+T, MAX6326UR23D3+T offers identical supervision accuracy and low-voltage capability but requires signal inversion, while TPS3123E18DBVR trades threshold precision and brownout resilience for TI's production ecosystem support-neither is pin-compatible nor drop-in.
Availability
MAX6332UR23D3+T is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensors, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6332UR23D3+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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6332 series belongs to Maxim's ultra-low-voltage supervisory product line, engineered specifically for reliable reset generation in battery-powered and brownout-prone systems where traditional supervisors fail below 1V.
FAQ
What is the exact reset threshold voltage for MAX6332UR23D3+T?
The MAX6332UR23D3+T has a factory-trimmed nominal reset threshold of 2.30V, with ±1.8% tolerance at +25°C and ±3% over the full –40°C to +125°C operating range. This value is verified per Table 1 in the official datasheet and applies specifically to the UR23D3 variant of the MAX6332 family.
Does MAX6332UR23D3+T support operation below 1.0V supply voltage?
Yes, the MAX6332UR23D3+T is guaranteed to operate and assert valid RESET down to 0.7V VCC, unlike many competitors limited to 1.0V or higher. This capability is explicitly documented in the Absolute Maximum Ratings and Electrical Characteristics tables for the MAX6332/MAX6333 variants.
What is the reset timeout period for MAX6332UR23D3+T?
The MAX6332UR23D3+T provides a minimum reset timeout period of 100ms after VCC rises above the 2.30V threshold. This value is factory-programmed and confirmed in the Selector Guide and Electrical Characteristics table under parameter tRP for suffix "D3".
Is MAX6332UR23D3+T pin-compatible with MAX809?
Yes, the MAX6332UR23D3+T uses the same SOT23-3 package and pinout (GND, RESET, VCC) as the MAX809 family, enabling direct replacement in existing layouts-provided the active-high output matches system requirements. Pin compatibility is explicitly stated in the Benefits and Features section of the datasheet.
What is the maximum supply current draw of MAX6332UR23D3+T at 1.8V?
The MAX6332UR23D3+T draws 3.0µA (typical) to 6.0µA (maximum) supply current at VCC = 1.8V and TA = +25°C, as specified in the Electrical Characteristics table under "Supply Current (ICC)". This ultra-low current supports multi-year battery life in portable applications.
MAX6332UR23D3+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:
- 2.3V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6332UR23D3+T FAQ
1.How can I place an order for MAX6332UR23D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR23D3+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 MAX6332UR23D3+T reliable?
The price and inventory of MAX6332UR23D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR23D3+T is usually 5 days.
3.What payment methods are accepted for MAX6332UR23D3+T?
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4.How is shipping managed for MAX6332UR23D3+T?
MAX6332UR23D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR23D3+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 MAX6332UR23D3+T?
For technical support, including MAX6332UR23D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR23D3+T requirements.
6.How does Aetrix verify that MAX6332UR23D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6332UR23D3+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 MAX6332UR23D3+T meets industry standards.
7.What is the process for return or replacement of MAX6332UR23D3+T?
All MAX6332UR23D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR23D3+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 MAX6332UR23D3+T part is unused and in its original packaging.
Return procedure for MAX6332UR23D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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