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Analog Devices Inc./Maxim Integrated MAX6332UR16D3+T
- Part No.:
- MAX6332UR16D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX6332UR16D3+T.pdf
- Description:
- IC MPU/RESET CIRC 1.60V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,194
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Product details
Overview
MAX6332UR16D3+T from Maxim Integrated is a push/pull, active-high microprocessor supervisory circuit in SOT23-3 package, designed for 1.8V–3.3V digital systems. It monitors VCC and asserts RESET when voltage falls below 1.60V (±1.8% at +25°C), maintains reset for ≥100ms after recovery, operates down to 0.7V supply, and draws only 3.0–6.0µA at 1.8V - enabling reliable power-on/brownout reset in battery-powered controllers and embedded instrumentation.
For engineers reviewing the MAX6332UR16D3+T datasheet, MAX6332UR16D3+T pinout, MAX6332UR16D3+T application, or MAX6332UR16D3+T equivalent, key selection criteria include its 1.6V factory-trimmed reset threshold, 100ms minimum timeout, active-high push/pull output, guaranteed operation to 0.7V, and SOT23-3 footprint compatibility with MAX809/MAX6326 families.
Technical Context
The MAX6332UR16D3+T implements a precision bandgap-based reset comparator with factory-trimmed 1.60V threshold (±1.8% at +25°C, ±3% over –40°C to +125°C) and internal timing capacitor for fixed 100ms reset timeout. Its push/pull output drives high during reset assertion and low otherwise, with VOH = 0.8×VCC (ISOURCE = 1µA to 200µA) and VOL ≤ 0.3V (ISINK = 500µA to 1.2mA).
It features transient immunity up to 24µs at 10V/ms VCC fall rate, operates across –40°C to +125°C, and guarantees valid RESET/RESET states down to VCC = 0.7V - unlike open-drain variants requiring external pull-ups. No external components are needed beyond optional 100kΩ pull-up for VCC = 0 validity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.60V ±1.8% at +25°C; ensures reliable brownout detection for 1.8V logic rails |
| Reset Timeout Period | ≥100ms; provides sufficient hold time for μP initialization after power recovery |
| Supply Voltage Range | 0.7V to 5.5V; supports ultra-low-voltage operation during battery depletion |
| Supply Current | 3.0–6.0µA at 1.8V; enables multi-year operation in coin-cell-powered devices |
| Output Type | Active-high push/pull; eliminates need for external pull-up resistor in most μP interfaces |
| Operating Temperature | –40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| VCC Falling Propagation Delay | 24µs at 10V/ms; rejects fast transients while responding promptly to sustained undervoltage |
Pinout & Package
SOT23-3 package: 1.45mm × 1.45mm × 1.1mm body, 0.95mm pitch, gull-wing leads. RoHS-compliant lead-free finish (+T suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output driver; must be connected directly to system ground plane |
| 2 | RESET | Active-high push/pull output; drives high during reset assertion (VCC < 1.60V) and low otherwise; compatible with CMOS μP reset inputs |
| 3 | VCC | Power supply input; accepts 0.7V–5.5V; powers internal comparator and output stage; decoupling capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.60V threshold | Eliminates external resistor network; achieves ±1.8% accuracy at room temperature without calibration |
| 100ms minimum reset timeout | Guarantees μP core and peripherals fully stabilize before release from reset state |
| 0.7V minimum operating voltage | Ensures reset remains asserted through deep brownout conditions where μP would otherwise malfunction |
| 3.3µA typical supply current | Reduces quiescent power in always-on monitoring circuits; extends battery life in portable equipment |
| Transient-immune comparator | Rejects sub-24µs negative VCC glitches, preventing spurious resets in noisy power environments |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
Use Scenario: PLC I/O modules powered by 2.5V DC-DC converters subject to load transients and thermal cycling. IC Role / Device Role / Timing Role: Monitors 2.5V rail and asserts active-high RESET to ARM Cortex-M4 controller during undervoltage events. Use Value: Prevents firmware corruption by holding processor in reset until stable 2.5V is restored for ≥100ms - matching boot ROM timing requirements. |
Use Scenario: Handheld glucose meter using CR2032 coin cell with voltage decay from 3.0V to 1.8V over battery life. IC Role / Device Role / Timing Role: Supervises 1.8V LDO output and triggers reset when cell voltage drops below 1.60V threshold. Use Value: Enables safe shutdown before ADC reference drift compromises measurement accuracy - leveraging 0.7V operational floor. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: BCM microcontroller operating from 3.3V supply exposed to cold-crank transients (–0.5V to +4.5V). IC Role / Device Role / Timing Role: Provides brownout reset with 24µs glitch immunity to prevent erratic CAN message transmission during engine start. Use Value: Maintains deterministic reset behavior across –40°C to +125°C ambient, meeting AEC-Q100 Grade 1 requirements. |
Use Scenario: Revenue-grade meter with real-time clock and flash memory requiring clean power-up sequencing after AC line interruption. IC Role / Device Role / Timing Role: Generates ≥100ms active-high reset pulse to initialize metrology SoC and secure bootloader. Use Value: Guarantees EEPROM write completion and RTC synchronization before application code execution begins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR16D3+T | Same 1.60V threshold and 100ms timeout, but push/pull active-low output | Requires μP with active-low reset input; incompatible with active-high-only interfaces | Select when legacy design uses active-low reset signaling and board layout cannot accommodate level-shifting |
| TLV803EA16DBZR | 1.60V threshold, 140ms timeout, 0.9V min VCC, 0.5µA ICC, SOT23-3 | Lower supply current and deeper undervoltage operation, but no guaranteed 0.7V functionality or transient immunity spec | Prefer for ultra-low-power IoT sensors where 140ms timeout suffices and VCC rarely dips below 0.9V |
Compared with MAX6332UR16D3+T, MAX6326UR16D3+T offers identical supervision accuracy but inverted logic polarity, while TLV803EA16DBZR trades guaranteed 0.7V operation and transient rejection for lower quiescent current - making MAX6332UR16D3+T optimal for robustness-critical brownout protection in harsh environments.
Availability
MAX6332UR16D3+T is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, automotive body electronics, smart energy meters, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6332UR16D3+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 industrial, automotive, communications, and computing applications.
The MAX6332 family delivers ultra-low-voltage, low-power microprocessor supervisory circuits optimized for reliable reset generation in space-constrained, battery-sensitive, and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage for MAX6332UR16D3+T?
The MAX6332UR16D3+T has a factory-trimmed nominal reset threshold of 1.60V, with tolerance of ±1.8% 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 UR16D3 variant, ensuring precise brownout detection for 1.8V logic systems without external calibration.
Does MAX6332UR16D3+T support operation below 1.0V supply voltage?
Yes, MAX6332UR16D3+T is guaranteed to function correctly down to 0.7V supply voltage, maintaining valid active-high RESET output state throughout this range. This capability is explicitly specified in the Absolute Maximum Ratings and Electrical Characteristics tables, distinguishing it from the MAX6334 variant (min 1.0V) and enabling use in deep-battery-depletion scenarios.
What is the reset timeout period for MAX6332UR16D3+T?
The MAX6332UR16D3+T provides a minimum reset timeout period of 100ms after VCC rises above the 1.60V threshold. This value is factory-programmed and confirmed in the Electrical Characteristics table under "Reset Active Timeout Period" for the D3 suffix, ensuring sufficient hold time for microprocessor initialization sequences in safety-critical applications.
Is MAX6332UR16D3+T pin-compatible with MAX809?
Yes, MAX6332UR16D3+T is pin-compatible with MAX809 in the SOT23-3 package, sharing identical pin 1 (GND), pin 2 (RESET), and pin 3 (VCC) assignments. The datasheet explicitly states "Pin-Compatible with MAX809/MAX810", confirming mechanical and functional interoperability for drop-in replacement in existing layouts - provided the active-high output matches the host μP's reset polarity requirement.
What is the maximum supply current draw of MAX6332UR16D3+T at 1.8V?
The MAX6332UR16D3+T draws a maximum supply current of 6.0µA at VCC = 1.8V and TA = +25°C, with typical consumption at 3.0µA. This specification is documented in the Electrical Characteristics table under "Supply Current (ICC)" and reflects true quiescent current - critical for extending battery life in always-on monitoring applications such as portable instrumentation and remote sensors.
MAX6332UR16D3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX6332UR16D3+T FAQ
1.How can I place an order for MAX6332UR16D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR16D3+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 MAX6332UR16D3+T reliable?
The price and inventory of MAX6332UR16D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR16D3+T is usually 5 days.
3.What payment methods are accepted for MAX6332UR16D3+T?
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4.How is shipping managed for MAX6332UR16D3+T?
MAX6332UR16D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR16D3+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 MAX6332UR16D3+T?
For technical support, including MAX6332UR16D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR16D3+T requirements.
6.How does Aetrix verify that MAX6332UR16D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6332UR16D3+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 MAX6332UR16D3+T meets industry standards.
7.What is the process for return or replacement of MAX6332UR16D3+T?
All MAX6332UR16D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR16D3+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 MAX6332UR16D3+T part is unused and in its original packaging.
Return procedure for MAX6332UR16D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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