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Analog Devices Inc./Maxim Integrated MAX6800UR40D3+
- Part No.:
- MAX6800UR40D3+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6800UR40D3+.pdf
- Description:
- MAX6800 3-PIN, LOW-POWER MICROPR
- Quantity:
- Payment:
- Shipping:
Inventory:1,184
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Product details
Overview
MAX6800UR40D3+ from Maxim Integrated is a precision push/pull active-high microprocessor supervisory circuit in SOT23-3 package, monitoring VCC from 2.85V to 5.0V with factory-trimmed 4.00V reset threshold (±1.8% at +25°C, ±3% over -40°C to +125°C), 100ms minimum reset timeout, and guaranteed RESET assertion down to VCC = 0.7V - used for reliable power-on/brownout reset in embedded controllers and portable instrumentation.
For engineers reviewing the MAX6800UR40D3+ datasheet, MAX6800UR40D3+ pinout, MAX6800UR40D3+ application, or MAX6800UR40D3+ equivalent, key selection criteria include active-high output logic, 4.0V threshold tolerance across temperature, ultra-low 4–12µA supply current, and compatibility with space-constrained 3-pin SOT23 layouts requiring no external components.
Technical Context
The MAX6800UR40D3+ implements a precision bandgap-based reset comparator with factory-trimmed 4.00V threshold and hysteresis optimized for immunity to fast VCC transients (e.g., ≤30µs glitches at 100mV overdrive). Its push/pull output drives high during reset assertion and sinks up to 1.2mA at VCC ≥ 3.0V with VOL ≤ 0.3V.
It operates across -40°C to +125°C with full electrical specification, draws only 4µA at VCC = 3.0V, and maintains valid RESET output state down to VCC = 0.7V - enabling robust reset behavior during deep brownout conditions where many µPs cease operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.00V ±1.8% at +25°C; ±3% over -40°C to +125°C - ensures accurate brownout detection across industrial temperature range |
| Reset Timeout Period | 100ms minimum - provides sufficient hold time for µP initialization after power stabilization |
| Supply Current | 4µA (typ) at VCC = 3.0V - enables multi-year battery life in portable equipment |
| Operating Voltage Range | 0.7V to 5.5V - guarantees functional reset assertion even during severe undervoltage events |
| Output Type | Active-high push/pull - directly interfaces with µP reset inputs requiring high-asserted reset signal without pull-up |
| VOL / VOH | VOL ≤ 0.3V at ISINK = 1.2mA, VCC ≥ 3.0V; VOH ≥ 0.8×VCC at ISOURCE = 800µA - ensures clean logic-level drive into CMOS inputs |
| Package | SOT23-3 - 2.92mm × 1.3mm footprint ideal for compact PCB layouts |
Pinout & Package
MAX6800UR40D3+ is housed in a RoHS-compliant 3-pin SOT23 package (outline 21-0051, land pattern 90-0179), with pin 1 = GND, pin 2 = RESET (active-high push/pull), pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output stage; must be low-impedance connection to system ground plane |
| 2 (RESET) | Active-high reset output | Drives high during reset assertion (VCC < 4.00V); sinks current when deasserted; no external pull-up required |
| 3 (VCC) | Supply voltage input | Monitored power rail; accepts 0.7V–5.5V; powers internal circuitry and defines VOH level |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 4.00V with ±1.8% accuracy at +25°C - eliminates manual calibration and external resistor networks |
| Ultra-low quiescent current | 4µA typical at 3.0V - reduces standby power in always-on battery-powered systems |
| Transient-immune reset comparator | Rejects VCC glitches ≤30µs at 100mV overdrive - prevents spurious resets from switching noise |
| Guaranteed operation down to 0.7V | Valid RESET output asserted until VCC drops to 0.7V - supports reset integrity during deep brownout |
| Three timeout options | 100ms minimum pulse width - matches boot-time requirements of modern 32-bit microcontrollers |
Applications
| Industrial Controller Power Monitoring | Portable Medical Instrumentation |
|---|---|
|
Use Scenario: Monitoring 3.3V or 5V rails in PLC I/O modules subject to intermittent AC line sags and EMI-induced dips. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting reset during brownout and holding for 100ms post-recovery to ensure deterministic µC reboot. Use Value: Prevents firmware corruption by guaranteeing full reset before instruction fetch resumes, leveraging 4.00V threshold aligned with 3.3V system margin. |
Use Scenario: Battery-powered handheld glucose meters operating from single Li-ion cell (2.8–4.2V range) with strict low-power requirements. IC Role / Device Role / Timing Role: Precision VCC monitor with 4.00V threshold detecting end-of-charge drop below safe operating voltage. Use Value: Enables graceful shutdown before brownout-induced data loss, using 4µA supply current to extend battery life beyond 2 years in sleep mode. |
| Automotive Body Control Module | Smart Sensor Node Power Sequencing |
|
Use Scenario: Reset supervision for 5V domain in BCMs exposed to load-dump and cold-crank transients per ISO 7637-2. IC Role / Device Role / Timing Role: High-immunity reset generator maintaining valid output down to 0.7V during cranking events. Use Value: Ensures µC remains held in reset until VCC stabilizes above 4.00V, avoiding erratic behavior during engine start. |
Use Scenario: Coordinating power-up sequence between MCU and analog front-end in wireless environmental sensors. IC Role / Device Role / Timing Role: 100ms reset pulse synchronizing digital core initialization with ADC reference settling. Use Value: Eliminates need for RC timing network, reducing BOM count and improving temperature stability of reset duration. |
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 | 2.93V fixed threshold, 240ms timeout, same SOT23-3 package and push/pull active-low output | Requires inverter or µP with active-low reset input; less precise threshold alignment for 4.0V systems | Select when legacy design uses active-low reset and 2.93V threshold suffices for 3.3V rail monitoring |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, open-drain active-low output, 1.5µA supply current | Needs external pull-up; incompatible with active-high reset inputs without level-shifting | Prefer for ultra-low-power 3.3V systems where active-low interface and tighter 1.5µA ICC are critical |
Compared with MAX809TRD3+T and TPS3808G33DBVR, the MAX6800UR40D3+ uniquely delivers factory-trimmable 4.00V threshold with active-high push/pull output in SOT23-3 - eliminating external components while matching exact system voltage-margin requirements for 5V or wide-range supplies.
Availability
MAX6800UR40D3+ is available at Aetrix Electronics and suitable for industrial controller power monitoring, portable medical instrumentation, automotive body control modules, and smart sensor node power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for MAX6800UR40D3+ 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 computing applications, emphasizing reliability, low power, and integration.
The MAX6800 family delivers highly accurate, low-quiescent-current µP supervisory circuits targeting space-constrained embedded systems needing guaranteed reset behavior across extreme voltage and temperature conditions.
FAQ
What is the reset threshold voltage of MAX6800UR40D3+ and how tightly is it specified?
The MAX6800UR40D3+ has a factory-trimmed nominal reset threshold of 4.00V, specified as ±1.8% at +25°C and ±3% over the full -40°C to +125°C operating temperature range. This tight tolerance ensures consistent brownout detection across environmental conditions without external calibration, directly supporting 5V system margin requirements.
Does MAX6800UR40D3+ require external components to function?
No, the MAX6800UR40D3+ requires no external components - its precision reset threshold, 100ms timeout, and push/pull active-high output are fully integrated. Unlike RC-based supervisors, it eliminates resistor/capacitor tolerances and temperature drift, reducing BOM count and improving long-term reliability in production systems.
What is the minimum supply voltage at which MAX6800UR40D3+ guarantees valid reset output?
The MAX6800UR40D3+ guarantees correct RESET output state down to VCC = 0.7V, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures the reset signal remains asserted through deep brownout events where most microcontrollers cease operation, preventing undefined behavior.
How does the 100ms reset timeout of MAX6800UR40D3+ benefit system startup?
The 100ms minimum reset timeout of MAX6800UR40D3+ provides sufficient hold time for modern microcontrollers to complete internal PLL lock, flash initialization, and peripheral configuration before releasing reset. This eliminates race conditions that cause boot failures in complex embedded systems.
Is MAX6800UR40D3+ compatible with standard SOT23-3 PCB footprints?
Yes, MAX6800UR40D3+ uses the industry-standard SOT23-3 package (outline 21-0051) with 0.95mm pin pitch and 2.92mm × 1.3mm body size. It shares identical land pattern requirements with MAX809/MAX810 and other common 3-pin supervisors, enabling direct layout reuse across multiple designs.
MAX6800UR40D3+ 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:
- 4V
- 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
MAX6800UR40D3+ FAQ
1.How can I place an order for MAX6800UR40D3+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6800UR40D3+ 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 MAX6800UR40D3+ reliable?
The price and inventory of MAX6800UR40D3+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6800UR40D3+ is usually 5 days.
3.What payment methods are accepted for MAX6800UR40D3+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6800UR40D3+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6800UR40D3+?
MAX6800UR40D3+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6800UR40D3+ 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 MAX6800UR40D3+?
For technical support, including MAX6800UR40D3+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6800UR40D3+ requirements.
6.How does Aetrix verify that MAX6800UR40D3+ is sourced from the original manufacturer or authorized distributors?
All MAX6800UR40D3+ 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 MAX6800UR40D3+ meets industry standards.
7.What is the process for return or replacement of MAX6800UR40D3+?
All MAX6800UR40D3+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6800UR40D3+, 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 MAX6800UR40D3+ part is unused and in its original packaging.
Return procedure for MAX6800UR40D3+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6800UR40D3+ Tags
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