My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6801UR46D3+T
- Part No.:
- MAX6801UR46D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6801UR46D3+T.pdf
- Description:
- IC RESET MPU LOW PWR SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,648
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6801UR46D3+T from Maxim Integrated is a precision microprocessor supervisory circuit with active-low push/pull RESET output, factory-trimmed 4.63V reset threshold, and 100ms minimum reset timeout period. It monitors VCC in 2.85V–5.0V systems, asserts RESET during brownout or power-up, and guarantees valid reset signaling down to 0.7V supply voltage - ideal for industrial controllers and battery-powered instrumentation requiring reliable power-on reset.
For engineers reviewing the MAX6801UR46D3+T datasheet, MAX6801UR46D3+T pinout, MAX6801UR46D3+T application, or MAX6801UR46D3+T equivalent, key selection criteria include guaranteed 0.7V operation, 4.0µA supply current at 3.0V, ±3% temperature-stable reset threshold tolerance, and SOT23-3 compatibility with legacy MAX809/MAX6326 families.
Technical Context
The MAX6801UR46D3+T implements a precision bandgap-based reset comparator with factory-trimmed 4.63V threshold (±1.8% at +25°C, ±3% over –40°C to +125°C) and internal timing circuitry generating a minimum 100ms reset pulse after VCC recovery. Its push/pull output drives low with ≤0.4V at 50µA sink current and high with ≥0.8×VCC at 500µA source current.
Designed for immunity to fast VCC transients, it ignores glitches under 30µs at 100mV overdrive and maintains correct reset state down to 0.7V VCC. The BiCMOS process ensures stable operation across –40°C to +125°C with no external components required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V ±3% over –40°C to +125°C - ensures reliable detection of 5V rail brownout before µP malfunction |
| Reset Timeout Period | 100ms minimum - provides sufficient hold time for full µP initialization and peripheral stabilization |
| Supply Current | 4µA typical at 3.0V - enables multi-year battery life in portable monitoring devices |
| Operating Voltage Range | 0.7V to 5.5V - guarantees functional reset assertion even during deep brownout or partial power loss |
| Output Type | Active-low push/pull - eliminates need for external pullup resistor and supports direct µP RESET pin drive |
| VOL / VOH | ≤0.4V at 50µA sink / ≥0.8×VCC at 500µA source - ensures TTL/CMOS-compatible logic levels across full VCC range |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and outdoor embedded applications |
Pinout & Package
MAX6801UR46D3+T is housed in a RoHS-compliant 3-pin SOT23 package (outline 21-0051, land pattern 90-0179), with 1.3mm × 2.9mm footprint and 0.95mm height - suitable for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output stage; must be connected directly to system ground plane |
| 2 (RESET) | Active-low push/pull reset output | Drives low during VCC undervoltage or timeout; actively pulls high when deasserted - no external pullup needed |
| 3 (VCC) | Power supply input | Monitored rail input; powers internal circuitry and defines logic high level for RESET output |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.63V with ±3% tolerance over full temperature range - eliminates manual calibration and external resistive dividers |
| Ultra-low quiescent current | 4µA at 3.0V - reduces standby power in always-on battery-backed systems by >90% vs. discrete solutions |
| Transient-immune reset comparator | Rejects VCC glitches <30µs at 100mV overdrive - prevents spurious resets in noisy industrial environments |
| Guaranteed operation to 0.7V VCC | Valid RESET assertion maintained until supply collapses below 0.7V - ensures last-cycle µP reset integrity |
| SOT23-3 footprint compatibility | Pins match MAX809/MAX6326/MAX6346 families - enables drop-in replacement without PCB redesign |
Applications
| Industrial PLC Power Monitoring | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Continuous operation in factory-floor programmable logic controllers where 24V DC supplies feed local 5V regulators subject to load-switching transients. IC Role / Device Role / Timing Role: Supervises 5V rail and asserts active-low RESET to halt PLC CPU during brownout, holding reset for ≥100ms after recovery. Use Value: Prevents corrupted I/O state or firmware lockup caused by marginal VCC; 0.7V operational floor ensures reset validity through full regulator collapse. |
Use Scenario: Multi-year deployment of environmental sensors powered by coin-cell batteries, requiring ultra-low-power supervision during sleep/wake cycles. IC Role / Device Role / Timing Role: Monitors regulated 3.3V supply and triggers µC reset if battery voltage sags below 3.3V × 0.95 = ~3.14V (using 3.08V variant) - this part uses 4.63V threshold for 5V systems. Use Value: 4µA supply current extends battery life beyond 10 years; 100ms timeout accommodates slow LDO startup after deep sleep wake-up. |
| Automotive Body Control Modules | Medical Portable Diagnostic Devices |
|
Use Scenario: Under-hood BCMs exposed to wide thermal swings (–40°C to +125°C) and load-dump-induced VCC disturbances. IC Role / Device Role / Timing Role: Provides fail-safe reset for ARM Cortex-M4 host MCU, asserting RESET on 5V rail dip below 4.63V and sustaining it ≥100ms post-recovery. Use Value: ±3% threshold stability over temperature avoids false resets at extremes; 30µs transient immunity rejects alternator noise spikes. |
Use Scenario: Handheld ultrasound or glucose meters requiring FDA-grade reliability and guaranteed power-on initialization sequence. IC Role / Device Role / Timing Role: Ensures microcontroller enters known state at power-up by holding RESET active until 5V rail stabilizes above 4.63V for ≥100ms. Use Value: Push/pull output eliminates external components - reducing BOM count and failure modes critical for medical certification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UT46D3+T | Same 4.63V threshold and 100ms timeout, but open-drain output requiring external pullup | Requires additional 100kΩ pullup resistor; less suitable for µPs with weak internal pullups | Select when interfacing with bidirectional reset pins (e.g., Motorola 68HC11) or shared reset buses |
| MAX809TRD3+T | 4.63V threshold, 240ms timeout, push/pull output, but higher 12µA supply current | Longer reset hold time may delay system boot; higher ICC increases battery drain in portable use | Select when extended reset duration is required for complex FPGA configuration or multi-stage power sequencing |
Compared with MAX6801UR46D3+T, MAX6326UT46D3+T trades push/pull simplicity for bus-sharing flexibility, while MAX809TRD3+T offers longer timeout at the cost of triple the quiescent current - making MAX6801UR46D3+T optimal for space- and power-constrained 5V µP systems needing precise 100ms reset hold.
Availability
MAX6801UR46D3+T is available at Aetrix Electronics and suitable for industrial PLCs, battery-powered data loggers, and automotive body control modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6801UR46D3+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 and mixed-signal ICs for industrial, automotive, and communications applications, emphasizing high reliability and low power.
The MAX6800/MAX6801/MAX6802 family delivers single-function, ultra-low-power µP reset supervision with factory-trimmed thresholds - targeting cost-sensitive, space-constrained embedded systems needing guaranteed brownout protection.
FAQ
What is the exact reset threshold voltage of MAX6801UR46D3+T and how stable is it over temperature?
The MAX6801UR46D3+T has a factory-trimmed nominal reset threshold of 4.63V, with ±1.8% tolerance at +25°C and ±3% over the full –40°C to +125°C operating range. This stability ensures consistent brownout detection across automotive and industrial environments without recalibration.
Does MAX6801UR46D3+T require any external components to function?
No. The MAX6801UR46D3+T operates autonomously with only VCC, GND, and RESET connections. Its push/pull output eliminates the need for an external pullup resistor, and its internal precision reference and timing circuitry remove requirements for capacitors or resistors - reducing BOM count and board area.
What is the minimum supply voltage at which MAX6801UR46D3+T guarantees valid RESET assertion?
The MAX6801UR46D3+T guarantees correct RESET assertion and deassertion functionality down to 0.7V VCC, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures reliable last-cycle reset behavior during deep brownout conditions before complete power loss.
How does the 100ms reset timeout period of MAX6801UR46D3+T benefit system initialization?
The 100ms minimum reset timeout period of MAX6801UR46D3+T ensures the microprocessor remains held in reset long enough for all power rails, clocks, and peripherals to stabilize after power-up or brownout recovery - preventing race conditions, memory corruption, or undefined startup states in complex embedded systems.
Is MAX6801UR46D3+T pin-compatible with other common reset ICs?
Yes. The MAX6801UR46D3+T uses the standard 3-pin SOT23 package and shares identical pinout (GND, RESET, VCC) with MAX809/MAX810, MAX6326/MAX6327/MAX6328, and MAX6346/MAX6347/MAX6348 - enabling direct replacement without PCB layout changes.
MAX6801UR46D3+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.63V
- 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
MAX6801UR46D3+T FAQ
1.How can I place an order for MAX6801UR46D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6801UR46D3+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 MAX6801UR46D3+T reliable?
The price and inventory of MAX6801UR46D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6801UR46D3+T is usually 5 days.
3.What payment methods are accepted for MAX6801UR46D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6801UR46D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6801UR46D3+T?
MAX6801UR46D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6801UR46D3+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 MAX6801UR46D3+T?
For technical support, including MAX6801UR46D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6801UR46D3+T requirements.
6.How does Aetrix verify that MAX6801UR46D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6801UR46D3+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 MAX6801UR46D3+T meets industry standards.
7.What is the process for return or replacement of MAX6801UR46D3+T?
All MAX6801UR46D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6801UR46D3+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 MAX6801UR46D3+T part is unused and in its original packaging.
Return procedure for MAX6801UR46D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6801UR46D3+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…
