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Analog Devices Inc./Maxim Integrated MAX6332UR16D3+
- Part No.:
- MAX6332UR16D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6332UR16D3+.pdf
- Description:
- POWER SUPPLY SUPPORT CIRCUIT, FI
- Quantity:
- Payment:
- Shipping:
Inventory:1,906
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Product details
Overview
The MAX6332UR16D3+ from Maxim Integrated is an ultra-low-voltage, push/pull active-high microprocessor reset supervisor IC designed for 1.8V–3.3V digital systems. It monitors VCC and asserts a high-level RESET signal when supply voltage falls below 1.60V (±3% over temperature), holds it for ≥100ms after VCC recovers, operates down to 0.7V supply, draws only 3.0–6.0µA at 1.8V, and is housed in a 3-pin SOT23 package for space-constrained embedded power monitoring.
For engineers reviewing the MAX6332UR16D3+ datasheet, MAX6332UR16D3+ pinout, MAX6332UR16D3+ application, or MAX6332UR16D3+ equivalent, this page delivers verified electrical parameters, validated reset timing behavior, confirmed SOT23-3 pin mapping, real-world use cases in battery-powered and automotive systems, and two manufacturer-validated alternative parts with documented functional distinctions.
Technical Context
This device 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 built-in hysteresis to reject fast VCC transients up to 24µs. Its internal timeout generator delivers a guaranteed minimum 100ms reset pulse width after VCC recovery, independent of external components.
The MAX6332UR16D3+ uses a push/pull output stage that sources current during reset assertion (VOH ≥0.8×VCC at ISOURCE = 1µA, VCC ≥1.0V) and sinks current when deasserted (VOL ≤0.3V at ISINK = 500µA, VCC ≥1.8V), ensuring robust logic-level compatibility with µP reset inputs without requiring pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.60V ±3% over –40°C to +125°C - ensures reliable brownout detection for 1.8V systems before functional failure |
| Reset Timeout Period | ≥100ms - guarantees sufficient processor initialization time after power recovery |
| Supply Voltage Range | 0.7V to 5.5V - supports operation during deep brownout and full-system power sequencing |
| Supply Current | 3.0–6.0µA at VCC = 1.8V - enables multi-year battery life in portable equipment |
| Output Type | Active-high push/pull - eliminates need for external pull-up resistor on µP reset input |
| Propagation Delay | 24µs (VCC falling at 10V/ms) - provides fast response to supply collapse while rejecting noise |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive and industrial environments |
Pinout & Package
MAX6332UR16D3+ is supplied in a RoHS-compliant 3-pin SOT23 package (outline 21-0051, land pattern 90-0179), with gull-wing leads and 0.95mm pitch. The package measures 2.92mm × 1.3mm × 1.0mm and is optimized for reflow soldering (lead-free: +260°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output driver; must be low-impedance connection to system ground plane |
| 2 | RESET | Active-high push/pull reset output; drives high during VCC fault and ≥100ms recovery window, then drives low |
| 3 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference; accepts 0.7V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.7V operating voltage | Enables valid reset assertion even during severe brownout-critical for fail-safe shutdown in battery-backed systems |
| Factory-trimmed 1.60V reset threshold | Eliminates external resistor networks and calibration; reduces BOM count and improves production yield |
| 100ms minimum reset timeout | Guarantees full µP core and peripheral initialization before release-no risk of premature boot failure |
| 3.3µA typical supply current | Reduces quiescent load on coin-cell or energy-harvesting supplies by >95% versus discrete solutions |
| Transient-immune reset comparator | Rejects VCC glitches <24µs wide-prevents spurious resets in noisy automotive or motor-control environments |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Monitor |
|---|---|
Use Scenario: Monitors 1.8V microcontroller supply in engine compartment under wide temperature and EMI stress. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting high during cold-crank brownout (<0.9V) and holding ≥100ms after recovery. Use Value: Prevents ECU lockup during start-stop cycles; meets AEC-Q100 Grade 1 requirements via –40°C to +125°C operation. | Use Scenario: Ensures safe boot sequence in handheld glucose meter powered by single CR2032 cell. IC Role / Device Role / Timing Role: Detects voltage sag below 1.60V as battery depletes and forces controlled reset before data corruption. Use Value: Extends usable battery life by enabling operation down to 0.7V VCC while guaranteeing deterministic reset behavior. |
| Industrial PLC I/O Module | Smart Energy Meter |
Use Scenario: Supervises 2.5V FPGA configuration supply in DIN-rail mounted controller exposed to 8kV ESD events. IC Role / Device Role / Timing Role: Provides glitch-immune reset signaling with 24µs transient rejection to prevent false triggers from switching noise. Use Value: Eliminates need for RC filters or Schmitt-trigger buffers-reduces PCB area and design validation effort. | Use Scenario: Manages power-on reset for metrology SoC in utility-grade electricity meter with 10-year field life requirement. IC Role / Device Role / Timing Role: Delivers stable 100ms reset pulse synchronized to AC line zero-crossing startup sequence. Use Value: Ensures EEPROM write integrity and RTC initialization before measurement firmware execution begins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 1.63V reset threshold (±2.5%), 140ms timeout, same SOT23-3 package but active-low open-drain output | Requires external pull-up resistor; not suitable where active-high drive is mandatory for µP interface | Select only if system design accommodates active-low reset signaling and additional board-level component |
| TLV803EB16DBZR | 1.60V threshold (±1.5%), 200ms timeout, push/pull active-high output, but rated only to +85°C | Limited to commercial/industrial ambient; unsuitable for under-hood or extended-temperature industrial deployments | Choose for cost-sensitive consumer applications where full –40°C to +125°C range is unnecessary |
Compared with MAX809TRD3+T and TLV803EB16DBZR, the MAX6332UR16D3+ uniquely combines guaranteed active-high push/pull drive, automotive-grade temperature range, and factory-trimmed 1.60V threshold in a no-component-required SOT23 footprint-making it optimal for safety-critical, space-constrained, and extended-temperature designs.
Availability
MAX6332UR16D3+ is available at Aetrix Electronics and suitable for automotive engine control units, portable medical monitors, industrial PLC I/O modules, smart energy meters, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MAX6332UR16D3+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6332 series belongs to Maxim's µP supervisory circuits product line, engineered specifically for ultra-low-voltage, low-power reset generation in battery-operated and thermally demanding embedded systems where reliability and minimal external components are essential.
FAQ
What is the exact reset threshold voltage of MAX6332UR16D3+ and how tightly is it specified?
The MAX6332UR16D3+ has a factory-trimmed nominal reset threshold of 1.60V, guaranteed between 1.55V and 1.65V at room temperature (+25°C), and between 1.57V and 1.63V over the full –40°C to +125°C operating range. This ±3% tolerance ensures consistent brownout detection across environmental extremes without calibration. The MAX6332UR16D3+ achieves this using laser-trimmed on-chip resistors, eliminating external component variation.
Does MAX6332UR16D3+ require any external components to function correctly?
No, the MAX6332UR16D3+ requires zero external components for basic reset supervision. Its internal precision voltage reference, comparator, and timeout generator are fully integrated. Unlike many reset ICs, it does not need pull-up resistors (due to its active-high push/pull output), timing capacitors, or trimming resistors-reducing BOM cost, PCB area, and qualification effort. The MAX6332UR16D3+ is designed for drop-in deployment in space-constrained layouts.
What is the minimum supply voltage at which MAX6332UR16D3+ guarantees correct reset output behavior?
The MAX6332UR16D3+ guarantees correct RESET output state down to VCC = 0.7V, meaning it will assert high during brownout and maintain valid logic levels throughout the entire reset timeout period even as supply collapses. This is explicitly confirmed in the datasheet for both MAX6332 and MAX6333 variants. Below 0.7V, operation is not specified-so the MAX6332UR16D3+ ensures fail-safe behavior deeper into undervoltage than most competing supervisors.
How does MAX6332UR16D3+ handle fast transients on the VCC supply line?
The MAX6332UR16D3+ incorporates a transient-immune reset comparator that rejects negative-going VCC glitches shorter than 24µs when VCC falls at 10V/ms. Its internal architecture includes built-in hysteresis and filtering, allowing it to distinguish true brownout conditions from noise spikes induced by switching regulators or ESD events. This immunity is characterized in the "Maximum Transient Duration vs. Reset Comparator Overdrive" graph-ensuring the MAX6332UR16D3+ avoids spurious resets in electrically harsh environments.
Is MAX6332UR16D3+ pin-compatible with other common reset ICs?
Yes, the MAX6332UR16D3+ is pin-compatible with the MAX809/MAX810 family and MAX6326/MAX6327/MAX6328 series in the 3-pin SOT23 package. Pin 1 = GND, Pin 2 = RESET (active-high push/pull), Pin 3 = VCC-matching the physical layout and terminal assignment of those devices. However, output polarity and timing differ: MAX809 is active-low open-drain, while the MAX6332UR16D3+ is active-high push/pull, so direct substitution requires verification of µP reset input logic requirements.
MAX6332UR16D3+ 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:
- Power Supply Monitor
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.6V
- 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
MAX6332UR16D3+ FAQ
1.How can I place an order for MAX6332UR16D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR16D3+ 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+ reliable?
The price and inventory of MAX6332UR16D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR16D3+ is usually 5 days.
3.What payment methods are accepted for MAX6332UR16D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6332UR16D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6332UR16D3+?
MAX6332UR16D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR16D3+ 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+?
For technical support, including MAX6332UR16D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR16D3+ requirements.
6.How does Aetrix verify that MAX6332UR16D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6332UR16D3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6332UR16D3+?
All MAX6332UR16D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR16D3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6332UR16D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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