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Analog Devices Inc./Maxim Integrated MAX6806UR23
- Part No.:
- MAX6806UR23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806UR23.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:4,615
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Product details
Overview
MAX6806UR23 from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It features a factory-preset 2.3V ±2% reset threshold, active-low push-pull RESET output, and guaranteed operation down to VCC = 1.0V - enabling reliable brownout detection in battery-powered embedded controllers and portable instrumentation.
For engineers reviewing the MAX6806UR23 datasheet, MAX6806UR23 pinout, MAX6806UR23 application, or MAX6806UR23 equivalent, this device serves as a low-quiescent-current (35µA typ), single-supply reset supervisor with no external components required - critical for space-constrained, low-power µP reset management in industrial and portable equipment.
Technical Context
The MAX6806UR23 implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output chatter near the 2.3V threshold during supply transients. Its push-pull output drives logic-level RESET directly without pull-up resistors.
It operates across −40°C to +85°C with supply voltage range 1.0V to 5.5V, supports fast reset assertion (30µs typical delay), and includes immunity to negative-going VCC transients up to 100mV overdrive - making it suitable for noisy, battery-backed environments where stable power sequencing is essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.30V ±2% (VTH− at +25°C); ensures reset asserts before system ICs drop below minimum operating voltage. |
| Supply Current | 35µA typical at VCC = 3.6V; enables multi-year battery life in always-on portable monitors. |
| RESET Valid Down To | VCC = 1.0V; guarantees deterministic reset state even during deep brownout or battery depletion. |
| Hysteresis | 0.02–0.03 × VTH−; eliminates false resets caused by supply ripple or noise near threshold. |
| Output Type | Active-low push-pull; drives CMOS/TTL loads directly without external pull-up. |
| Operating Temp | −40°C to +85°C; qualified for industrial and extended-temperature embedded applications. |
| Package | 3-pin SOT23; footprint-compatible with industry-standard low-profile PCB layouts. |
Pinout & Package
MAX6806UR23 is housed in a 3-pin SOT23 package (outline 21-0051), with 0.95mm pitch, 1.3mm × 2.9mm body, and RoHS-compliant lead finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low when VCC < 2.3V; sinks current to ground, sources weakly to VCC. |
| 2 | GND | Ground reference for internal comparator and output stage; must be low-impedance return path. |
| 3 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.3V threshold | ±2% accuracy over temperature ensures consistent reset timing across −40°C to +85°C. |
| No external components | Eliminates need for resistive dividers, capacitors, or pull-ups - reduces BOM count and layout area. |
| Low 35µA supply current | Minimizes standby power draw in battery-operated bar-code scanners and handheld instruments. |
| 1.0V VCC operation limit | Enables full reset functionality during deep discharge of Li-ion or alkaline cells. |
| Transient immunity | Immune to negative VCC spikes ≤100mV overdrive - avoids spurious resets in electrically noisy environments. |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
Use Scenario: Battery voltage monitoring in handheld multimeters and data loggers with Li-ion or AA/AAA cells. IC Role / Device Role / Timing Role: Voltage detector providing early-warning reset before MCU brownout or ADC reference collapse. Use Value: Prevents corrupted measurements or firmware lockup by asserting RESET at 2.3V - aligned with end-of-discharge voltage of common primary cells. |
Use Scenario: Power supervision in benchtop oscilloscopes and spectrum analyzers with dual-rail analog front-ends. IC Role / Device Role / Timing Role: Primary reset supervisor ensuring clean startup and fault recovery for FPGA-configured signal processing chains. Use Value: 30µs reset delay and 2.3V threshold match timing requirements of high-speed ADCs and DACs powered from regulated 2.5V rails. |
| Critical µP and µC Power Monitoring | Bar-Code Scanners |
Use Scenario: Reset conditioning for ARM Cortex-M0+ microcontrollers in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Standalone reset generator replacing discrete resistor-capacitor networks in space-constrained control boards. Use Value: Push-pull output drives µC reset pin directly; ±2% threshold tolerance avoids marginal reset behavior under varying load conditions. |
Use Scenario: Power integrity assurance in cordless laser bar-code scanners using intermittent high-current LED drivers. IC Role / Device Role / Timing Role: Brownout detector that triggers controlled shutdown before flash memory write corruption occurs. Use Value: 1.0V VCC operation allows reset assertion even during brief battery sag under motor/LED pulse loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR23 | Same 2.3V threshold, but adds watchdog timer and manual reset; higher ICC (1.2µA typ). | Required where system-level fault recovery beyond simple power monitoring is needed. | Select MAX6326UR23 only if watchdog timeout or MR functionality is explicitly required. |
| TPS3808G23DBVR | 2.3V threshold, ±0.5% accuracy, 1.8µA ICC, but requires external pull-up for open-drain output. | Better accuracy and lower current, but incompatible pinout and output architecture. | Choose TPS3808G23DBVR only when ultra-low ICC and tighter threshold tolerance outweigh redesign effort. |
Compared with MAX6806UR23, MAX6326UR23 adds supervisory features at higher quiescent current and cost, while TPS3808G23DBVR offers superior accuracy and efficiency but demands board-level changes due to open-drain output and different pin mapping.
Availability
MAX6806UR23 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, critical µP and µC power monitoring, and bar-code scanners requiring stable component supply and long-term industrial availability.
Supply support for MAX6806UR23 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, communications, and consumer applications - emphasizing reliability, integration, and low-power operation.
The MAX6806 family delivers compact, low-cost voltage supervision for microprocessor systems - targeting applications where predictable reset behavior, minimal external components, and robust transient immunity are mandatory.
FAQ
What is the exact reset threshold voltage of the MAX6806UR23?
The MAX6806UR23 has a factory-trimmed nominal reset threshold of 2.30V with ±2% accuracy over temperature (−40°C to +85°C). At +25°C, the guaranteed range is 2.254V to 2.346V (VTH−), and hysteresis is 0.02–0.03 × VTH− - ensuring stable switching without oscillation near the trip point. This value is fixed and not user-adjustable.
Does the MAX6806UR23 require any external components to function?
No, the MAX6806UR23 operates autonomously with no external components required. Its internal precision voltage reference, comparator, and push-pull output eliminate the need for external resistors, capacitors, or pull-up networks. Only VCC, GND, and the RESET load (e.g., µC reset pin) are needed - simplifying design and reducing PCB area.
Can the MAX6806UR23 assert reset when VCC drops below 1.0V?
No - the MAX6806UR23 guarantees valid RESET output only down to VCC = 1.0V. Below 1.0V, the internal circuitry ceases to operate and RESET becomes high-impedance. For applications requiring reset assertion all the way to 0V, an external pulldown resistor (e.g., 100kΩ) on the RESET line is recommended to maintain a defined logic-low state.
Is the MAX6806UR23 pin-compatible with other devices in the MAX6806 family?
Yes - all 3-pin SOT23 variants in the MAX6806 family (e.g., MAX6806UR46, MAX6806UR26) share identical pinout (Pin 1: RESET, Pin 2: GND, Pin 3: VCC). The MAX6806UR23 can be substituted for other UR_-T variants on the same footprint, provided the 2.3V threshold meets system requirements.
What is the maximum supply voltage rating for the MAX6806UR23?
The MAX6806UR23 has an absolute maximum VCC rating of +6.0V, but its specified operating range is 1.0V to 5.5V. Operation above 5.5V risks exceeding electrical limits and is not guaranteed. For 5V systems, the 2.3V threshold provides safe margin against undervoltage faults while allowing full rail utilization.
MAX6806UR23 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 Low
- Reset Timeout:
- 30µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX6806UR23 FAQ
1.How can I place an order for MAX6806UR23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806UR23 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 MAX6806UR23 reliable?
The price and inventory of MAX6806UR23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806UR23 is usually 5 days.
3.What payment methods are accepted for MAX6806UR23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806UR23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806UR23?
MAX6806UR23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806UR23 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 MAX6806UR23?
For technical support, including MAX6806UR23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806UR23 requirements.
6.How does Aetrix verify that MAX6806UR23 is sourced from the original manufacturer or authorized distributors?
All MAX6806UR23 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 MAX6806UR23 meets industry standards.
7.What is the process for return or replacement of MAX6806UR23?
All MAX6806UR23 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806UR23, 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 MAX6806UR23 part is unused and in its original packaging.
Return procedure for MAX6806UR23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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