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Analog Devices Inc./Maxim Integrated MAX6332UR23D3
- Part No.:
- MAX6332UR23D3
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6332UR23D3.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,191
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Product details
Overview
The MAX6332UR23D3 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 guaranteed operation down to 0.7V and a 100ms minimum reset timeout period. It delivers ultra-low 3.3µA supply current at 2.5V and supports critical μP power monitoring in space-constrained portable systems.
For engineers reviewing the MAX6332UR23D3 datasheet, MAX6332UR23D3 pinout, MAX6332UR23D3 application, or MAX6332UR23D3 equivalent, key selection criteria include its active-high push/pull output, factory-trimmed 2.30V reset threshold, 100ms timeout, 0.7V operating limit, and SOT23-3 footprint compatibility with MAX809/MAX6326 families.
Technical Context
This device implements a precision voltage comparator with hysteresis and an internal timer to generate a fixed-duration active-high reset pulse after VCC recovers above the threshold. Its reset assertion logic remains valid down to VCC = 0.7V, enabling reliable brownout detection in low-voltage embedded systems.
The comparator rejects fast transients on VCC-up to 24µs at 10V/ms slew rate-and features factory-trimmed thresholds with ±1.8% tolerance at +25°C and ±3% over –40°C to +125°C. The push/pull output drives high to 0.8×VCC at 200µA source current and sinks to ≤0.3V at 1.2mA load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.30V ±1.8% at +25°C; ensures reliable reset initiation during 2.5V supply brownout |
| Reset Timeout Period | 100ms minimum; guarantees sufficient processor initialization time after power recovery |
| Supply Voltage Range | 0.7V to 5.5V; supports operation through deep brownout and battery-depleted states |
| Supply Current | 3.3µA typical at 2.5V; enables multi-year battery life in always-on monitoring circuits |
| Operating Temperature | –40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| Output Type | Active-high push/pull; eliminates external pull-up resistor and simplifies interface to μP reset inputs |
| VCC Transient Immunity | Rejects negative-going transients ≤24µs at 10V/ms; prevents false resets from switching noise |
Pinout & Package
MAX6332UR23D3 is housed in a RoHS-compliant 3-pin SOT23-3 package (outline 21-0051) with 0.95mm pitch, optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output driver; must be low-impedance connection |
| 2 | RESET | Active-high push/pull output; asserts high during VCC undervoltage and for 100ms after recovery |
| 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 severe brownout, ensuring μP never escapes reset before stable VCC |
| Factory-trimmed 2.30V threshold | Eliminates external resistor network and calibration; reduces BOM count and layout area |
| 100ms minimum reset timeout | Guarantees full processor boot sequence completion before release, preventing firmware lockup |
| 3.3µA supply current at 2.5V | Minimizes quiescent power draw in battery-backed systems without sacrificing reset accuracy |
| SOT23-3 footprint | Provides pin compatibility with MAX809/MAX6326 families, enabling drop-in replacement in existing designs |
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: Supervisory circuit asserting active-high RESET to hold microcontroller in reset until Li-ion battery voltage stabilizes above 2.30V. Use Value: Prevents corrupted memory writes and sensor misreads during battery voltage sag, extending field reliability beyond 5 years. |
Use Scenario: DIN-rail mounted programmable logic controllers exposed to 24VDC rail fluctuations in factory automation. IC Role / Device Role / Timing Role: Reset supervisor monitoring 3.3V LDO output derived from noisy 24V bus, triggering 100ms reset pulse on transient dips. Use Value: Eliminates spurious controller reboots caused by motor switching noise, reducing unplanned downtime by >99.5%. |
| Automotive Body Control Units | Smart Energy Meters |
Use Scenario: Under-hood BCMs powered from vehicle battery subject to cold-crank voltage drops below 1.0V. IC Role / Device Role / Timing Role: Active-high reset generator maintaining valid RESET signal down to 0.7V VCC, compatible with automotive-grade μP reset inputs. Use Value: Ensures deterministic startup after engine cranking, meeting ISO 16750-2 pulse 4a compliance without external biasing. |
Use Scenario: Revenue-grade electricity meters with tamper-detection circuitry requiring fail-safe reset during AC line interruptions. IC Role / Device Role / Timing Role: Primary supervisor monitoring backup supercapacitor voltage, asserting RESET for ≥100ms upon discharge below 2.30V. Use Value: Guarantees secure cryptographic state preservation and meter register integrity during grid outage events. |
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 rated only to +85°C; lower temperature grade. | Not qualified for under-hood automotive or extended industrial use above +85°C. | Select MAX6326UR23D3-T only for cost-sensitive commercial applications with ambient <85°C. |
| TLV803EC23DBZR | 2.32V threshold (±2%), 140ms timeout, 0.8V min VCC, 0.9µA ICC; different timing and lower current. | Lacks guaranteed 0.7V operation and has longer timeout; better for ultra-low-power, not brownout-critical systems. | Choose TLV803EC23DBZR where sub-1µA quiescent current outweighs 0.7V brownout coverage. |
Compared with MAX6332UR23D3, MAX6326UR23D3-T sacrifices automotive temperature range for lower cost, while TLV803EC23DBZR trades brownout robustness for ultra-low ICC-making MAX6332UR23D3 optimal for high-reliability, wide-temperature, low-VCC reset assurance.
Availability
MAX6332UR23D3 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6332UR23D3 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 operating down to 0.7V.
FAQ
What is the exact reset threshold voltage for MAX6332UR23D3?
The MAX6332UR23D3 features 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 confirmed in Table 1 of the official datasheet and applies exclusively to the UR23D3 variant.
Does MAX6332UR23D3 support operation below 1.0V VCC?
Yes, MAX6332UR23D3 is guaranteed to maintain correct reset assertion and deassertion behavior down to VCC = 0.7V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This capability is unique to the MAX6332/MAX6333 variants-not shared by the MAX6334 open-drain version.
What is the reset timeout period for MAX6332UR23D3?
The MAX6332UR23D3 provides a minimum reset timeout period of 100ms after VCC rises above the 2.30V threshold. This value is factory-programmed and verified across temperature; typical duration is 150ms, with maximum 200ms per the Electrical Characteristics table.
Is MAX6332UR23D3 pin-compatible with MAX809?
Yes, MAX6332UR23D3 uses the same SOT23-3 pinout (GND, RESET, VCC) and is explicitly stated in the datasheet to be pin-compatible with MAX809/MAX810 and MAX6326/MAX6327/MAX6328-enabling direct replacement without PCB modification in legacy designs.
What output structure does MAX6332UR23D3 use?
MAX6332UR23D3 employs an active-high push/pull output stage. When asserted, RESET is driven high to ≥0.8×VCC; when deasserted, it is actively pulled low to ≤0.3V at 1.2mA sink current-eliminating the need for an external pull-down resistor.
MAX6332UR23D3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- 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 FAQ
1.How can I place an order for MAX6332UR23D3 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR23D3 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 reliable?
The price and inventory of MAX6332UR23D3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR23D3 is usually 5 days.
3.What payment methods are accepted for MAX6332UR23D3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6332UR23D3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6332UR23D3?
MAX6332UR23D3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR23D3 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?
For technical support, including MAX6332UR23D3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR23D3 requirements.
6.How does Aetrix verify that MAX6332UR23D3 is sourced from the original manufacturer or authorized distributors?
All MAX6332UR23D3 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 meets industry standards.
7.What is the process for return or replacement of MAX6332UR23D3?
All MAX6332UR23D3 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR23D3, 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 part is unused and in its original packaging.
Return procedure for MAX6332UR23D3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6332UR23D3 Tags
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MIC826SYMT-TR
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APX803S-31SA-7
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APX803L20-29SA-7
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V6340RSP3B+
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EM6325CXSP5B-2.9+
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MCP120T-300I/TT
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MCP130T-315I/TT
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MCP120T-475I/TT
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MCP120T-315I/TT
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