My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6332UR20D3+
- Part No.:
- MAX6332UR20D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6332UR20D3+.pdf
- Description:
- MAX6332 3-PIN, ULTRA-LOW-VOLTAGE
- Quantity:
- Payment:
- Shipping:
Inventory:6,941
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6332UR20D3+ 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 2.00V (±2% over temperature), maintains reset for ≥100ms after VCC recovers, operates down to 0.7V supply, draws only 3.3µA typical current at 2.5V, and is housed in a 3-pin SOT23 package for space-constrained embedded power monitoring.
For engineers reviewing the MAX6332UR20D3+ datasheet, MAX6332UR20D3+ pinout, MAX6332UR20D3+ application, or MAX6332UR20D3+ equivalent, this page delivers verified functional identity, exact reset threshold and timeout, guaranteed low-voltage operation to 0.7V, SOT23-3 pin mapping, and validated alternatives for brownout detection in battery-powered controllers and automotive ECUs.
Technical Context
The MAX6332UR20D3+ 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 timing circuitry generating a minimum 100ms reset pulse width. Its push/pull output drives high actively during reset assertion and releases to high-impedance when deasserted.
It features transient immunity-rejecting VCC glitches ≤24µs at 10V/ms slew rate-and guarantees valid RESET output state down to VCC = 0.7V. No external components are required, and it interfaces directly with µP reset inputs without pull-up or pull-down resistors under normal operating conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.00V ±1.8% (25°C), ±3% (–40°C to +125°C); ensures reliable brownout detection at nominal 1.8V/2.5V rails |
| Reset Timeout Period | ≥100ms; holds processor in reset long enough for stable power recovery and clock stabilization |
| Supply Voltage Range | 0.7V to 5.5V; enables operation during deep brownout and supports wide-input industrial supplies |
| Supply Current | 3.3µA typical at 2.5V/25°C; minimizes quiescent drain in always-on battery-backed systems |
| Output Type | Active-high push/pull; drives RESET high during fault, eliminates need for external pull-up resistor |
| VCC Propagation Delay | 24µs max (VCC falling at 10V/ms); ensures fast response to rapid supply collapse |
| Operating Temperature | –40°C to +125°C; qualified for under-hood automotive and industrial control environments |
Pinout & Package
MAX6332UR20D3+ is packaged in a RoHS-compliant 3-pin SOT23 (U3+1) surface-mount package with 0.95mm pitch, footprint compatible with industry-standard 3-pin supervisory IC layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output stage; must be connected to system ground plane |
| 2 (RESET) | Active-high reset output | Drives high during VCC undervoltage or timeout; sinks current when deasserted (high-Z release) |
| 3 (VCC) | Supply input | Power source for internal circuitry; monitored for reset generation; accepts 0.7V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 0.7V operating supply | Enables reset assertion even during severe brownout, before most µPs lose functionality |
| Factory-trimmed 2.00V threshold | Eliminates external resistor divider; reduces BOM count and layout area in 1.8V/2.5V systems |
| 100ms minimum reset timeout | Guarantees sufficient hold time for oscillator startup and firmware initialization on cold boot |
| Push/pull active-high output | Directly drives CMOS reset inputs without pull-up; simplifies interface with Intel/ARM µPs requiring active-high reset |
| Transient-immune comparator | Rejects <24µs supply glitches-prevents spurious resets in noisy automotive or motor-control environments |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power monitoring during engine cranking where battery voltage dips to 6–9V across 12V rail. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-high RESET until stabilized 3.3V LDO output reaches 2.00V and sustains for ≥100ms. Use Value: Prevents controller lockup or corrupted EEPROM writes during cranking-induced brownout. |
Use Scenario: Monitoring 1.8V core supply of CAN-enabled microcontroller in door module. IC Role / Device Role / Timing Role: Active-high reset supervisor ensuring MCU remains held until post-cranking supply settles. Use Value: Guarantees deterministic boot sequence after ignition transients, meeting ISO 16750-2 pulse 4 requirements. |
| Portable Medical Sensor Node | Smart Energy Meter MCU |
Use Scenario: Coin-cell–powered glucose monitor waking from deep sleep with marginal VCC. IC Role / Device Role / Timing Role: Low-current (3.3µA) reset supervisor detecting 1.8V rail collapse and holding MCU reset until full recovery. Use Value: Extends usable battery life while ensuring safe restart after low-power wake events. |
Use Scenario: Monitoring backup supercapacitor-supplied 2.5V rail during AC mains failure. IC Role / Device Role / Timing Role: Precision 2.00V threshold detector initiating secure shutdown and RTC preservation sequence. Use Value: Enables accurate energy logging continuity by preventing partial writes during power transition. |
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 | 1.6V reset threshold, 240ms timeout, same SOT23-3 package and push/pull active-low output | Requires level-shifting or µP with active-low reset input; not drop-in due to polarity mismatch | Select when system design uses active-low reset architecture and requires longer timeout |
| TPS3808G18DBVR | 1.8V threshold, 200ms timeout, 1.5µA current, but active-low open-drain output and different pinout (GND/OUT/VCC) | Needs external pull-up and PCB layout change; incompatible pin mapping prevents direct replacement | Choose for ultra-low current designs where open-drain flexibility and higher accuracy (0.5%) justify redesign |
Compared with MAX809TRD3+T and TPS3808G18DBVR, the MAX6332UR20D3+ offers unique active-high push/pull output at 2.00V threshold with minimal 3.3µA consumption-enabling direct interface with modern ARM Cortex-M MCUs requiring no external components or polarity inversion.
Availability
MAX6332UR20D3+ is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical sensor nodes, smart energy meters, and battery-backed real-time clock systems requiring stable component supply across extended temperature ranges.
Supply support for MAX6332UR20D3+ 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 analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6332UR20D3+ belongs to Maxim's µP supervisory circuit product line, engineered specifically for reliable power-on/brownout reset generation in low-voltage embedded systems with stringent size and current constraints.
FAQ
What is the exact reset threshold voltage of the MAX6332UR20D3+?
The MAX6332UR20D3+ has a factory-trimmed reset threshold of 2.00V, with tolerance of ±1.8% 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 specifically to the "UR20" suffix variant. The MAX6332UR20D3+ uses this precise threshold to detect undervoltage on 1.8V or 2.5V rails without external calibration.
Does the MAX6332UR20D3+ provide an active-high or active-low reset output?
The MAX6332UR20D3+ provides an active-high push/pull reset output, meaning RESET goes high during undervoltage and remains high for ≥100ms after VCC recovers above 2.00V. This distinguishes it from the MAX6333 (active-low push/pull) and MAX6334 (active-low open-drain). The MAX6332UR20D3+ does not require an external pull-up resistor and directly interfaces with µPs specifying active-high reset.
What is the minimum supply voltage at which the MAX6332UR20D3+ guarantees correct reset behavior?
The MAX6332UR20D3+ guarantees correct reset assertion and deassertion down to VCC = 0.7V, as explicitly stated in the General Description and Absolute Maximum Ratings sections. This ultra-low operating voltage allows the MAX6332UR20D3+ to maintain supervision capability deeper into brownout than most competing supervisors, making it suitable for fail-safe operation in critical embedded systems.
Is the MAX6332UR20D3+ pin-compatible with the MAX809 series?
Yes-the MAX6332UR20D3+ is pin-compatible with the MAX809/MAX810 family in the SOT23-3 package, sharing identical pin 1 (GND), pin 2 (RESET), and pin 3 (VCC) assignments. However, output polarity differs: MAX809 outputs active-low RESET, while the MAX6332UR20D3+ outputs active-high RESET. System-level validation is required to confirm compatibility with the target µP's reset input logic level.
What is the guaranteed reset timeout period for the MAX6332UR20D3+?
The MAX6332UR20D3+ guarantees a minimum reset timeout period of 100ms after VCC rises above the 2.00V threshold, as indicated by the "D3" suffix in its part number. This value is tested and specified across –40°C to +125°C and ensures sufficient hold time for microprocessor clock stabilization and firmware initialization before release.
MAX6332UR20D3+ 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:
- 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+ FAQ
1.How can I place an order for MAX6332UR20D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6332UR20D3+ 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+ reliable?
The price and inventory of MAX6332UR20D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6332UR20D3+ is usually 5 days.
3.What payment methods are accepted for MAX6332UR20D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6332UR20D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6332UR20D3+?
MAX6332UR20D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6332UR20D3+ 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+?
For technical support, including MAX6332UR20D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6332UR20D3+ requirements.
6.How does Aetrix verify that MAX6332UR20D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6332UR20D3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6332UR20D3+?
All MAX6332UR20D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6332UR20D3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6332UR20D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6332UR20D3+ Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
