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Analog Devices Inc./Maxim Integrated MAX6807UR46
- Part No.:
- MAX6807UR46
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6807UR46.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:768
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Product details
Overview
MAX6807UR46 from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It features a factory-preset 4.6V ±2% reset threshold, active-high push-pull RESET output, guaranteed operation down to VCC = 1.2V, 35µA supply current, and internal hysteresis for stable switching-used in critical µP power monitoring for portable equipment and intelligent instruments.
For engineers reviewing the MAX6807UR46 datasheet, MAX6807UR46 pinout, MAX6807UR46 application, or MAX6807UR46 equivalent, this device serves as a low-power, high-accuracy reset supervisor where precise VCC brownout detection and immediate reset assertion are required without external components.
Technical Context
The MAX6807UR46 implements a comparator-based reset architecture with built-in hysteresis (VHYST = 0.02–0.03 × VTH−), enabling distinct rising (VTH+) and falling (VTH−) trip points to prevent chatter near threshold. Its active-high push-pull output drives logic-high when VCC ≥ 1.2V and asserts reset (logic-high) during undervoltage conditions.
It operates across −40°C to +85°C, supports VCC from 1.2V to 5.5V, and delivers 30µs typical VCC-to-RESET delay under 1mV/µs ramp rate. The SOT23-3 package provides minimal footprint while maintaining full electrical performance without manual reset capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.60V ±2% (VTH− at +25°C); ensures reliable detection of 5V supply droop before system ICs fall out of spec. |
| Supply Voltage Range | 1.2V to 5.5V (−40°C to +85°C); enables use with Li-ion battery-powered systems down to end-of-discharge. |
| Supply Current | 35µA typical at VCC = 3.6V; minimizes quiescent load in always-on supervisory paths. |
| RESET Output Type | Active-high push-pull; eliminates need for external pullup and supports direct connection to µP reset inputs. |
| VCC-to-RESET Delay | 30µs typical (VCC falling at 1mV/µs); provides fast response to brownout events without excessive latency. |
| Reset Hysteresis | 0.02–0.03 × VTH−; prevents oscillation during slow-rising/falling VCC transitions near threshold. |
| Operating Temp | −40°C to +85°C; qualified for industrial-grade embedded control and portable instrumentation. |
Pinout & Package
MAX6807UR46 is housed in a 3-pin SOT23 package (U3-1 outline), with exposed pad not electrically connected. Pin 1 = RESET (active-high push-pull), Pin 2 = GND, Pin 3 = VCC. No manual reset input or NC pins - optimized for minimal board area and cost-sensitive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RESET) | Active-high push-pull output | Drives logic-high during undervoltage; sinks/source current up to ±20mA; valid for VCC ≥ 1.2V. |
| 2 (GND) | Ground reference | Return path for internal circuitry and RESET output; must be low-impedance to ensure threshold accuracy. |
| 3 (VCC) | Supply voltage input | Monitored rail; accepts 1.2V–5.5V; absolute max rating −0.3V to +6.0V; immune to transients ≤100V/µs. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% accurate reset threshold | Guarantees detection within 92mV of 4.6V at +25°C, eliminating calibration and reducing BOM count. |
| Active-high push-pull RESET | Directly interfaces with µP reset inputs requiring active-high assertion; no external pullup resistor needed. |
| 35µA supply current | Enables multi-year battery life in portable devices with continuous supervision (e.g., barcode scanners). |
| Internal hysteresis | Prevents false resets during noisy or slowly varying VCC conditions; eliminates need for external RC network. |
| VCC-down-to-1.2V operation | Ensures valid reset assertion even as battery voltage decays below typical LDO dropout, improving system robustness. |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
|
Use Scenario: Handheld barcode scanner powered by single-cell Li-ion battery with variable discharge profile. IC Role / Device Role / Timing Role: Voltage detector monitoring main 3.3V rail derived from buck converter; asserts reset if VCC drops below 4.6V due to overcurrent or battery sag. Use Value: Prevents firmware corruption during brownout by guaranteeing clean reset before µP enters undefined state. |
Use Scenario: Portable multimeter with real-time ADC sampling and LCD display. IC Role / Device Role / Timing Role: Supervisory IC ensuring µC remains held in reset until regulated 5V supply stabilizes post-power-up. Use Value: Eliminates need for RC timing network; 30µs delay ensures rapid, deterministic initialization sequence. |
| Critical µP and µC Power Monitoring | Computers |
|
Use Scenario: Industrial PLC controller with ARM Cortex-M4 core requiring strict power sequencing. IC Role / Device Role / Timing Role: Dedicated reset supervisor verifying 5V I/O rail integrity before releasing µP from reset. Use Value: ±2% threshold tolerance matches 5V ±5% supply spec, preventing premature release or late assertion. |
Use Scenario: Embedded controller in legacy PC peripheral (e.g., USB-to-serial bridge) with 5V bus power. IC Role / Device Role / Timing Role: Monitors VBUS-derived 5V rail for transient-induced undervoltage events. Use Value: Immunity to negative-going VCC transients <100mV/µs ensures no spurious resets during hot-plug noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6806UR46-T | Active-low push-pull RESET output; identical threshold, hysteresis, and supply current. | Requires inverted reset logic on µP side or level-shifting circuitry. | Select when host µP accepts active-low reset and board layout already uses pull-down strategy. |
| TLV803EA46DBZR | 4.6V threshold, ±1% accuracy, 1.8V–6V VCC range, but 1.8µA typical ICC (vs. 35µA); SOT23-3 pinout. | Lower power ideal for ultra-low-duty-cycle wake-up systems; lacks transient immunity specs beyond 100V/µs. | Choose for battery lifetime-critical designs where 35µA is excessive and tighter threshold tolerance is beneficial. |
Compared with MAX6806UR46-T and TLV803EA46DBZR, the MAX6807UR46 offers optimal balance of active-high interface simplicity, industrial temperature range, and proven transient immunity-making it preferred for general-purpose 5V µP supervision where layout efficiency and reliability outweigh ultra-low-ICC requirements.
Availability
MAX6807UR46 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, critical µP and µC power monitoring, and computers requiring stable component supply and long-term industrial-grade availability.
Supply support for MAX6807UR46 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, computing, and portable applications.
The MAX6806/MAX6807/MAX6808 family delivers highly accurate, low-power voltage supervision for microprocessor systems-targeting applications where supply monitoring must be simple, reliable, and footprint-constrained.
FAQ
What is the reset threshold voltage of the MAX6807UR46?
The MAX6807UR46 has a factory-trimmed nominal reset threshold of 4.60V with ±2% accuracy over temperature (−40°C to +85°C). At +25°C, the specified range is 4.508V to 4.692V. This threshold applies to the falling VCC condition (VTH−), and internal hysteresis ensures stable switching without chatter near the trip point.
Does the MAX6807UR46 support manual reset functionality?
No, the MAX6807UR46 does not support manual reset. It is packaged in a 3-pin SOT23 configuration with only RESET, GND, and VCC terminals. Manual reset (MR) is only available on the 4-pin SOT143 variants (e.g., MAX6807US46-T), which include an internal 80kΩ pulldown resistor on the MR pin.
What is the minimum VCC required for valid RESET output operation in the MAX6807UR46?
The MAX6807UR46 guarantees valid RESET output behavior down to VCC = 1.2V. Below this voltage, the push-pull driver may not maintain proper logic levels. This specification ensures reliable reset assertion during deep battery discharge in portable systems before the µP loses functional operation.
Can the MAX6807UR46 be used with a 3.3V supply rail?
Yes, the MAX6807UR46 can monitor a 3.3V rail-but only as a supervisory device for overvoltage or brownout relative to its 4.6V threshold. It will assert RESET whenever VCC falls below 4.6V, so it is not suitable for direct 3.3V supply monitoring. For 3.3V rails, consider MAX6807UR32-T (3.2V threshold) or MAX6807UR26-T (2.6V threshold).
What package type and pinout does the MAX6807UR46 use?
The MAX6807UR46 uses a 3-pin SOT23 package (U3-1 outline) with top mark "FZDS". Pin 1 is RESET (active-high push-pull), Pin 2 is GND, and Pin 3 is VCC. It shares pin compatibility with other SOT23 voltage supervisors but is not pin-compatible with MAX6808 variants due to differing output drive architecture.
MAX6807UR46 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.6V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 30µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX6807UR46 FAQ
1.How can I place an order for MAX6807UR46 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6807UR46 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 MAX6807UR46 reliable?
The price and inventory of MAX6807UR46 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6807UR46 is usually 5 days.
3.What payment methods are accepted for MAX6807UR46?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6807UR46 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6807UR46?
MAX6807UR46 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6807UR46 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 MAX6807UR46?
For technical support, including MAX6807UR46 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6807UR46 requirements.
6.How does Aetrix verify that MAX6807UR46 is sourced from the original manufacturer or authorized distributors?
All MAX6807UR46 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 MAX6807UR46 meets industry standards.
7.What is the process for return or replacement of MAX6807UR46?
All MAX6807UR46 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6807UR46, 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 MAX6807UR46 part is unused and in its original packaging.
Return procedure for MAX6807UR46:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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