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Analog Devices Inc./Maxim Integrated MAX6801UR46D3+
- Part No.:
- MAX6801UR46D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6801UR46D3+.pdf
- Description:
- MAX6801 3-PIN, LOW-POWER MICROPR
- Quantity:
- Payment:
- Shipping:
Inventory:1,137
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Product details
Overview
MAX6801UR46D3+ from Maxim Integrated is a push/pull active-low microprocessor supervisory circuit in 3-pin SOT23 package, monitoring VCC supply at 4.63V reset threshold with 100ms minimum timeout, ultra-low 4µA supply current, and guaranteed RESET validity down to 0.7V - used for reliable power-on/brownout reset in portable and automotive control systems.
For engineers reviewing the MAX6801UR46D3+ datasheet, MAX6801UR46D3+ pinout, MAX6801UR46D3+ application, or MAX6801UR46D3+ equivalent, key selection criteria include factory-trimmed 4.63V threshold accuracy (±3% over -40°C to +125°C), 100ms reset pulse width, push/pull output drive capability, and SOT23-3 footprint compatibility with legacy supervisors.
Technical Context
The MAX6801UR46D3+ integrates a precision voltage comparator with hysteresis and an internal timer to generate a clean, glitch-immune active-low RESET signal when VCC falls below 4.63V, holding it asserted for ≥100ms after VCC recovers above threshold. Its BiCMOS process ensures stable operation across -40°C to +125°C.
Reset assertion is immune to fast transients ≤30µs (at 100mV overdrive), and the push/pull output delivers VOL ≤0.4V at 1.2mA sink load while maintaining VOH ≥0.8×VCC when not asserted - enabling direct interface with CMOS µP reset inputs without external pullups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V (factory-trimmed, ±3% over -40°C to +125°C) - ensures precise brownout detection for 4.5–5.0V systems |
| Reset Timeout | 100ms minimum - guarantees sufficient hold time for µP initialization and peripheral stabilization |
| Supply Current | 4µA typical at +25°C - enables multi-year battery life in portable equipment |
| Operating Voltage Range | 0.7V to 5.5V - supports valid reset assertion even during deep brownout or partial power loss |
| Output Type | Active-low push/pull - eliminates need for external pullup resistor and provides strong low-state drive |
| VCC Transient Immunity | Rejects transients ≤30µs at 100mV overdrive - prevents false resets from noise or switching spikes |
| Package | SOT23-3 - 2.92mm × 1.3mm footprint compatible with space-constrained PCB layouts |
Pinout & Package
MAX6801UR46D3+ is housed in a RoHS-compliant 3-pin SOT23 package (outline U3-1, land pattern 90-0179), with gull-wing leads and 0.95mm pitch. The compact 2.92mm × 1.3mm body height of 1.02mm enables high-density placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference 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 fault; high-impedance state not supported; no external pullup required |
| 3 | VCC | Supply input - powers internal circuitry and defines monitored voltage rail; operates down to 0.7V |
Key Features
| Feature | Design Value |
|---|---|
| Precision 4.63V reset threshold | Factory-trimmed to ±3% over full temperature range - eliminates manual calibration and external resistive dividers |
| 100ms minimum reset timeout | Guaranteed timing independent of external components - ensures µP core and peripherals fully initialize before release |
| 0.7V operating supply limit | Valid RESET/RESET assertion down to 0.7V VCC - supports robust reset behavior during severe brownout conditions |
| 4µA typical supply current | Enables integration into always-on battery-backed subsystems without measurable drain impact |
| Push/pull active-low output | Provides strong low-state drive (≤0.4V @ 1.2mA) and high-state level (≥0.8×VCC) - interfaces directly with standard CMOS reset inputs |
Applications
| Battery-Powered Data Loggers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Long-term environmental monitoring using coin-cell or Li-ion battery with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring clean µC boot after cold start or voltage sag during sensor sampling. Use Value: 4µA quiescent current extends battery life beyond 5 years; 4.63V threshold aligns with nominal 4.8V Li-ion cutoff to prevent data corruption. |
Use Scenario: Power management in door module ECUs exposed to load dump and battery disconnect events. IC Role / Device Role / Timing Role: Brownout detector asserting RESET during 12V system dips below 4.63V, holding for ≥100ms post-recovery. Use Value: Guaranteed operation to -40°C/+125°C and transient immunity prevent spurious resets during engine cranking or alternator ripple. |
| Industrial PLC I/O Subsystems | Medical Portable Diagnostic Devices |
|
Use Scenario: Isolated digital I/O expansion cards requiring deterministic reset coordination with host controller. IC Role / Device Role / Timing Role: Local VCC monitor providing synchronized reset pulse to FPGA and isolated transceivers upon rail instability. Use Value: Push/pull output eliminates external pullup, reducing BOM count; SOT23-3 footprint fits tight spacing between isolation barriers. |
Use Scenario: Handheld ultrasound or glucose meters with strict safety-critical boot validation requirements. IC Role / Device Role / Timing Role: Primary reset supervisor validating main 3.3V/5V rails before enabling analog front-end and display controllers. Use Value: Factory-trimmed 4.63V threshold and 100ms timeout meet IEC 62304 Class C reset timing compliance without design margin overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 4.63V threshold, 240ms min timeout, same SOT23-3 package, push/pull active-low output | Longer timeout may delay µP startup in time-sensitive systems; identical pinout and footprint | Select when longer reset hold time is acceptable and higher supply current (15µA) is tolerable |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms min timeout, 1.5µA supply current, open-drain output requiring pullup | Not suitable for 4.63V monitoring; requires external resistor and cannot replace without schematic change | Choose only if system uses 3.3V rail supervision and ultra-low current is prioritized over pin compatibility |
Compared with MAX809TRD3+T and TPS3808G33DBVR, the MAX6801UR46D3+ offers optimal balance of precise 4.63V threshold, 100ms timing, lowest quiescent current among 4.6V-class push/pull supervisors, and drop-in replacement capability for existing MAX6801 designs - making it ideal for cost- and space-constrained industrial and automotive applications.
Availability
MAX6801UR46D3+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, automotive body electronics, and industrial PLC subsystems requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6801UR46D3+ 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, communications, and computing markets, emphasizing reliability, low power, and integration.
The MAX6800/MAX6801/MAX6802 family delivers single-function, low-power µP reset supervision with factory-trimmed thresholds and robust transient immunity - targeting space- and power-constrained embedded systems where simplicity and predictability are critical.
FAQ
What is the exact reset threshold voltage for MAX6801UR46D3+?
The MAX6801UR46D3+ has a factory-trimmed reset threshold of 4.63V, with tolerance of ±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 "46" suffix variant. The MAX6801UR46D3+ maintains this accuracy without external calibration or trimming components.
Does MAX6801UR46D3+ require an external pullup resistor on the RESET pin?
No, the MAX6801UR46D3+ features a push/pull active-low output that actively drives both high and low states, eliminating the need for an external pullup resistor. Its VOH reaches ≥0.8×VCC when deasserted and VOL remains ≤0.4V at 1.2mA sink load when asserted - enabling direct connection to standard CMOS reset inputs without additional components.
What is the minimum reset timeout period specified for MAX6801UR46D3+?
The MAX6801UR46D3+ provides a minimum reset timeout period of 100ms, as indicated by the "D3" suffix in its part number. This is guaranteed over temperature and supply voltage variations, and is implemented entirely internally - no external capacitor or resistor is needed to set or adjust the timing.
Is MAX6801UR46D3+ qualified for automotive applications?
The MAX6801UR46D3+ is not explicitly automotive-qualified; its ordering information shows no "/V" suffix, which denotes AEC-Q100 qualification. It operates across -40°C to +125°C and meets industrial reliability standards, but for automotive-critical systems requiring formal qualification, the /V-grade variants (e.g., MAX6801UR46D3/V-T) should be selected instead of MAX6801UR46D3+.
Can MAX6801UR46D3+ operate reliably below 1.0V supply voltage?
Yes, the MAX6801UR46D3+ is guaranteed to maintain correct RESET/RESET logic state down to VCC = 0.7V, as stated in the General Description and Electrical Characteristics tables. This allows valid reset assertion during deep brownout conditions where other supervisors may fail - a key differentiator versus the MAX6802 (guaranteed only to 1.0V) and many competing devices.
MAX6801UR46D3+ 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:
- -
- Type:
- Power Supply Monitor
- 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+ FAQ
1.How can I place an order for MAX6801UR46D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6801UR46D3+ 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+ reliable?
The price and inventory of MAX6801UR46D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6801UR46D3+ is usually 5 days.
3.What payment methods are accepted for MAX6801UR46D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6801UR46D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6801UR46D3+?
MAX6801UR46D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6801UR46D3+ 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+?
For technical support, including MAX6801UR46D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6801UR46D3+ requirements.
6.How does Aetrix verify that MAX6801UR46D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6801UR46D3+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6801UR46D3+?
All MAX6801UR46D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6801UR46D3+, 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+ part is unused and in its original packaging.
Return procedure for MAX6801UR46D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6801UR46D3+ Tags
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MIC826SYMT-TR
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