My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6333UR25D3-T
- Part No.:
- MAX6333UR25D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6333UR25D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,831
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX6333UR25D3-T from Maxim Integrated is a push/pull, active-low microprocessor supervisory circuit in SOT23-3 package, designed for 2.5V power-rail monitoring with factory-trimmed 2.50V reset threshold (±1.8% at +25°C), 100ms minimum reset timeout, and guaranteed operation down to VCC = 0.7V. It delivers ultra-low 3.3µA supply current at 2.5V and supports critical μP reset assertion during brownout, power-up, and power-down in space-constrained embedded systems.
For engineers reviewing the MAX6333UR25D3-T datasheet, MAX6333UR25D3-T pinout, MAX6333UR25D3-T application, or MAX6333UR25D3-T equivalent, this device serves as a precision, low-power, single-function reset supervisor for 2.5V digital systems requiring stable reset timing, transient immunity, and validated operation across -40°C to +125°C.
Technical Context
This IC implements a dedicated voltage-monitoring comparator with hysteresis and an internal timer for fixed-duration reset assertion. The reset threshold is factory-trimmed to 2.50V (±1.8% at +25°C, ±3% over full temperature range) and remains valid down to VCC = 0.7V. Its push/pull output drives RESET low during fault conditions and actively pulls high when deasserted.
The device features built-in immunity to fast VCC transients-capable of ignoring negative glitches up to 24µs at 10V/ms slew rate-and guarantees monotonic reset behavior without external components. It operates across the full industrial temperature range (-40°C to +125°C) with fully specified electrical characteristics including supply current, output voltage levels, and propagation delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.50V ±1.8% at +25°C; ±3% over -40°C to +125°C - ensures precise 2.5V rail supervision with minimal false triggering |
| Reset Timeout Period | 100ms minimum - provides sufficient hold time for μP initialization after power recovery |
| Supply Current | 3.3µA typical at VCC = 2.5V - enables battery-powered and ultra-low-power system integration |
| Operating Voltage Range | 0.7V to 5.5V - supports valid reset assertion even during deep brownout conditions |
| Output Type | Active-low push/pull - eliminates need for external pull-up resistor and ensures fast, controlled RESET deassertion |
| Temperature Range | -40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| VCC Falling Propagation Delay | 24µs - ensures rapid response to supply collapse without excessive delay |
Pinout & Package
MAX6333UR25D3-T is housed in a 3-pin SOT23-3 package (outline 21-0051, land pattern 90-0179), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for PCB area-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output stage; must be connected directly to system ground plane |
| 2 | RESET | Active-low push/pull output; sinks current when asserted (VOL ≤ 0.4V @ 50µA), sources current when deasserted (VOH ≥ 0.8×VCC) |
| 3 | VCC | Power supply input (0.7V–5.5V); powers internal comparator, timer, and output driver; also monitored rail |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.50V Reset Threshold | Factory-trimmed to ±1.8% at +25°C and ±3% over full temperature range - eliminates manual calibration and improves system reliability |
| 100ms Minimum Reset Timeout | Guaranteed minimum duration ensures μP completes power-on self-test and register initialization before release |
| 0.7V Minimum Operating Voltage | Valid RESET/RESET output state maintained down to VCC = 0.7V - supports robust brownout detection in low-VCC systems |
| 24µs VCC-Falling Response | Fast propagation delay enables timely reset assertion during rapid supply collapse, preventing erratic μP behavior |
| 3.3µA Supply Current at 2.5V | Ultra-low quiescent current extends battery life in portable equipment and reduces thermal load in dense layouts |
Applications
| Industrial PLC Controllers | Medical Diagnostic Handhelds |
|---|---|
Use Scenario: Programmable logic controllers operating in harsh factory environments with fluctuating 2.5V I/O rails. IC Role / Device Role / Timing Role: Monitors 2.5V supply and asserts active-low RESET to halt CPU execution during undervoltage events. Use Value: Prevents corrupted logic states and firmware crashes by guaranteeing 100ms reset hold time after VCC recovers above 2.50V. |
Use Scenario: Portable ultrasound or glucose meters powered by coin-cell batteries with regulated 2.5V analog front-end supplies. IC Role / Device Role / Timing Role: Supervises 2.5V rail powering ADCs and sensors; asserts RESET if battery sag drops VCC below 2.50V. Use Value: Enables reliable cold-start and brownout recovery with only 3.3µA quiescent draw, preserving battery runtime. |
| Automotive Body Control Modules | Smart Energy Meters |
Use Scenario: Under-dash ECUs exposed to wide temperature swings (-40°C to +125°C) and load-dump transients. IC Role / Device Role / Timing Role: Provides fail-safe reset signaling for 2.5V microcontroller core voltage under thermal and supply stress. Use Value: Maintains valid reset output down to 0.7V and rejects transients up to 24µs - critical for ASIL-B functional safety compliance. |
Use Scenario: Revenue-grade electricity meters with isolated 2.5V metrology rails requiring long-term calibration stability. IC Role / Device Role / Timing Role: Ensures deterministic μC reset during AC line sags or capacitor discharge events affecting 2.5V supply. Use Value: Factory-trimmed 2.50V threshold (±3% over temp) eliminates drift-related metering errors during extended field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6327UT25D3-T | Same SOT23-3 package and 2.50V threshold, but open-drain output and 1.0V minimum VCC | Requires external pull-up; not suitable where active-high drive or sub-1.0V brownout detection is needed | Select MAX6333UR25D3-T when push/pull drive, guaranteed 0.7V operation, or elimination of pull-up resistor is required |
| TPS3808G25DBVR | 2.5V threshold, 100ms timeout, but 1.8V–6.0V VCC range and 1.2µA typical ICC at 3.3V | Lower ICC benefits ultra-long-life battery apps; wider VCC range suits multi-rail designs | Choose TPS3808G25DBVR for lower quiescent current or broader supply compatibility; MAX6333UR25D3-T preferred for 0.7V brownout margin |
Compared with MAX6327UT25D3-T and TPS3808G25DBVR, the MAX6333UR25D3-T uniquely combines 0.7V operational floor, push/pull drive, and factory-trimmed 2.50V threshold in SOT23-3-making it optimal for cost-sensitive, space-constrained 2.5V systems demanding robust low-voltage reset assurance.
Availability
MAX6333UR25D3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, medical handheld diagnostics, and automotive body control modules requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6333UR25D3-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, and computing applications.
The MAX633x family delivers ultra-low-voltage, low-power supervisory circuits targeting space- and power-constrained μP systems requiring accurate, reliable reset generation without external components.
FAQ
What is the exact reset threshold voltage of the MAX6333UR25D3-T?
The MAX6333UR25D3-T has a factory-trimmed nominal reset threshold of 2.50V, 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 "UR25" suffix variant of the MAX6333UR25D3-T.
Does the MAX6333UR25D3-T support operation below 1.0V?
Yes - the MAX6333UR25D3-T is guaranteed to maintain valid RESET output down to VCC = 0.7V, unlike open-drain variants such as MAX6334 which require minimum 1.0V. This capability is explicitly stated in the General Description and Absolute Maximum Ratings sections for MAX6333 devices.
What is the reset timeout period for the MAX6333UR25D3-T?
The MAX6333UR25D3-T provides a minimum reset timeout period of 100ms, as indicated by the "D3" suffix in its part number. This value is guaranteed across temperature and process variations and is documented in the Electrical Characteristics table under parameter tRP for "MAX633_UR__D3-T" entries.
Is the MAX6333UR25D3-T pin-compatible with other MAX63xx supervisors?
Yes - the MAX6333UR25D3-T shares identical SOT23-3 pinout (GND, RESET, VCC) and footprint with MAX6326/MAX6327/MAX6328 and MAX809/MAX810 families. Pin compatibility is explicitly stated in the Benefits and Features section and verified via Pin Configuration diagrams in the datasheet.
What is the supply current consumption of the MAX6333UR25D3-T at 2.5V?
The MAX6333UR25D3-T draws 3.3µA typical supply current (ICC) at VCC = 2.5V and TA = +25°C, with a maximum of 7.0µA over temperature. This ultra-low quiescent current is measured under no-load conditions and is critical for battery-powered applications.
MAX6333UR25D3-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:
- 2.5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6333UR25D3-T FAQ
1.How can I place an order for MAX6333UR25D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6333UR25D3-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 MAX6333UR25D3-T reliable?
The price and inventory of MAX6333UR25D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6333UR25D3-T is usually 5 days.
3.What payment methods are accepted for MAX6333UR25D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6333UR25D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6333UR25D3-T?
MAX6333UR25D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6333UR25D3-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 MAX6333UR25D3-T?
For technical support, including MAX6333UR25D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6333UR25D3-T requirements.
6.How does Aetrix verify that MAX6333UR25D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6333UR25D3-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 MAX6333UR25D3-T meets industry standards.
7.What is the process for return or replacement of MAX6333UR25D3-T?
All MAX6333UR25D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6333UR25D3-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 MAX6333UR25D3-T part is unused and in its original packaging.
Return procedure for MAX6333UR25D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6333UR25D3-T 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…
