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Analog Devices Inc./Maxim Integrated MAX6332UR20D3-T
- Part No.:
- MAX6332UR20D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6332UR20D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,230
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Product details
Overview
MAX6332UR20D3-T from Maxim Integrated is a push/pull, active-high microprocessor supervisory circuit in SOT23-3 package, designed for 1.8V–3.3V systems. It monitors VCC and asserts a high-level RESET signal when supply voltage falls below 2.00V (±1.8% at +25°C), maintaining it for ≥100ms after VCC recovers-ensuring reliable power-on reset in battery-powered controllers and embedded microcontrollers.
For engineers reviewing the MAX6332UR20D3-T datasheet, MAX6332UR20D3-T pinout, MAX6332UR20D3-T application, or MAX6332UR20D3-T equivalent, key selection criteria include its 2.0V factory-trimmed threshold, 100ms minimum timeout, 0.7V operational lower limit, ultra-low 3.3µA supply current at 2.5V, and guaranteed RESET validity down to VCC = 0.7V with push/pull output structure.
Technical Context
The MAX6332UR20D3-T implements a precision bandgap-based reset comparator with factory-trimmed 2.00V threshold (±1.8% at +25°C, ±3% over –40°C to +125°C) and internal timeout timer generating ≥100ms active-high reset pulse. Its push/pull output drives high during reset assertion and low otherwise, eliminating external pull-up components.
It operates across full industrial temperature range (–40°C to +125°C), supports VCC from 0.7V to 5.5V, and rejects fast transients via comparator overdrive immunity-verified by maximum transient duration curves up to 100µs at 20mV overdrive. Reset propagation delay is ≤24µs for VCC falling at 10V/ms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.00V ±1.8% at +25°C; ensures precise brownout detection for 2.0V nominal rails |
| Reset Timeout Period | ≥100ms; guarantees sufficient processor initialization time after power recovery |
| Supply Voltage Range | 0.7V to 5.5V; enables operation during deep brownout and compatibility with 1.8V/2.5V/3.3V systems |
| Supply Current | 3.3µA typical at 2.5V; minimizes quiescent drain in always-on battery monitoring |
| Output Type | Push/pull active-high RESET; eliminates need for external pull-up resistor and simplifies interface |
| Operating Temperature | –40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| VCC Falling Propagation Delay | ≤24µs at 10V/ms; ensures rapid response to supply collapse without false triggering |
Pinout & Package
MAX6332UR20D3-T is housed in a 3-pin SOT23-3 package (outline 21-0051, land pattern 90-0179), with gull-wing leads and RoHS-compliant lead-free finish (indicated by "+T" suffix option). The compact 2.92mm × 1.3mm footprint supports space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output driver; must be connected to system ground plane |
| 2 | RESET | Active-high push/pull output; driven high during reset assertion (VCC < 2.00V) and low otherwise |
| 3 | VCC | Power supply input; powers internal circuitry and defines monitored rail; accepts 0.7V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.00V reset threshold | Eliminates external resistor network and calibration; reduces BOM count and layout area |
| 100ms minimum reset timeout | Meets JEDEC JESD78 reliability requirements for microcontroller initialization timing |
| 0.7V minimum operating voltage | Ensures valid reset state during deep brownout conditions before system shutdown |
| 3.3µA supply current at 2.5V | Extends battery life in portable instrumentation and wireless sensor nodes |
| Transient-immune reset comparator | Rejects <100µs negative glitches up to 20mV amplitude-no external filtering required |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: Microcontroller-based programmable logic controllers require deterministic reset during AC line sags or backup battery transitions. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to hold CPU in reset until 3.3V rail stabilizes above 2.00V for ≥100ms. Use Value: Prevents firmware corruption during undervoltage events; eliminates need for discrete RC reset networks. |
Use Scenario: Battery-powered ECG or SpO₂ monitors operate on single-cell Li-ion (2.7–4.2V) and must retain memory integrity during low-battery cutoff. IC Role / Device Role / Timing Role: Monitors 2.5V LDO output and triggers 100ms active-high reset to halt data acquisition and save state before shutdown. Use Value: Guarantees clean processor halt at VCC = 0.7V-enabling safe nonvolatile memory write completion. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: BCMs experience load-dump transients and cold-crank voltage dips; reset must ignore sub-100µs glitches while detecting sustained brownout. IC Role / Device Role / Timing Role: Push/pull RESET output directly interfaces with MCU's active-high reset pin, providing glitch-immune supervision over –40°C to +125°C. Use Value: Meets AEC-Q100 Grade 1 thermal requirements and avoids spurious resets during engine cranking. |
Use Scenario: Meters with real-time clocks and metrology ICs require fail-safe reset during mains interruption or capacitor backup discharge. IC Role / Device Role / Timing Role: Monitors 3.3V system rail and asserts high-level RESET for ≥100ms upon crossing 2.00V threshold during capacitor decay. Use Value: Ensures accurate energy accumulation registers are frozen before power loss-meeting IEC 62053 accuracy mandates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR20D3-T | Same 2.00V threshold and 100ms timeout, but specified only to +85°C (not +125°C); lower ICC (2.5µA) | Limited to commercial/industrial ambient; unsuitable for under-hood automotive use | Select MAX6332UR20D3-T when extended temperature operation (–40°C to +125°C) is required |
| TPS3123E18DBVR | 2.0V threshold, 200ms timeout, 1.8V min VCC, but open-drain active-low output; higher ICC (8µA) | Requires external pull-up; incompatible with active-high MCU reset inputs without level translation | Choose MAX6332UR20D3-T for direct active-high interface and lower quiescent current in battery-sensitive designs |
Compared with MAX6326UR20D3-T and TPS3123E18DBVR, the MAX6332UR20D3-T uniquely combines 125°C operation, push/pull active-high output, and sub-4µA supply current-making it optimal for thermally demanding, low-power microcontroller reset applications where board space and external components must be minimized.
Availability
MAX6332UR20D3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6332UR20D3-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, and computing applications.
The MAX6332 series belongs to Maxim's precision supervisory circuits product line, engineered for ultra-low-voltage, low-power microprocessor reset in space-constrained and thermally harsh environments.
FAQ
What is the factory-trimmed reset threshold voltage for MAX6332UR20D3-T?
The MAX6332UR20D3-T has a factory-trimmed reset threshold of 2.00V, with tolerance of ±1.8% at +25°C and ±3% over the full operating temperature range (–40°C to +125°C). This value is confirmed in Table 1 of the official datasheet and applies specifically to the "UR20" suffix variant. The threshold is set using laser trimming during production and does not require external adjustment.
Does MAX6332UR20D3-T support operation below 1.0V supply voltage?
Yes, the MAX6332UR20D3-T is fully specified to operate down to 0.7V VCC, and its RESET output remains valid (high during reset assertion) throughout this range. This capability is explicitly guaranteed per the Absolute Maximum Ratings and Electrical Characteristics tables, distinguishing it from open-drain variants like MAX6334 that require ≥1.0V for correct state retention.
What is the minimum reset timeout period for MAX6332UR20D3-T?
The MAX6332UR20D3-T provides a minimum reset timeout period of 100ms, as indicated by the "D3" suffix in its part number. This value is guaranteed across –40°C to +125°C and is independent of VCC within the 0.7V–5.5V range. Typical timeout is 150ms, with maximum 200ms, per the tRP specification in the Electrical Characteristics table.
Is MAX6332UR20D3-T pin-compatible with other supervisory ICs?
Yes, the MAX6332UR20D3-T is pin-compatible with MAX809/MAX810 and MAX6326/MAX6327/MAX6328 in the SOT23-3 package. Pin 1 is GND, Pin 2 is RESET (active-high push/pull), and Pin 3 is VCC-matching the same physical layout and terminal function. However, output polarity and timeout differ, so functional verification is required before drop-in replacement.
What is the supply current consumption of MAX6332UR20D3-T at 1.8V VCC?
At 1.8V VCC and TA = +25°C, the MAX6332UR20D3-T draws 3.0µA typical supply current (ICC), with a maximum of 6.0µA. This value is measured with no load on the RESET output and reflects the device's ultra-low-power design optimized for battery-backed systems and always-on monitoring applications.
MAX6332UR20D3-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:
- 2V
- 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
MAX6332UR20D3-T FAQ
1.How can I place an order for MAX6332UR20D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR20D3-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 MAX6332UR20D3-T reliable?
The price and inventory of MAX6332UR20D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR20D3-T is usually 5 days.
3.What payment methods are accepted for MAX6332UR20D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6332UR20D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6332UR20D3-T?
MAX6332UR20D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR20D3-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 MAX6332UR20D3-T?
For technical support, including MAX6332UR20D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR20D3-T requirements.
6.How does Aetrix verify that MAX6332UR20D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6332UR20D3-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 MAX6332UR20D3-T meets industry standards.
7.What is the process for return or replacement of MAX6332UR20D3-T?
All MAX6332UR20D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR20D3-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 MAX6332UR20D3-T part is unused and in its original packaging.
Return procedure for MAX6332UR20D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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