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Analog Devices Inc./Maxim Integrated MAX6806XR46-T
- Part No.:
- MAX6806XR46-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806XR46-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6806XR46-T from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It provides an active-low, push-pull RESET output with a factory-trimmed 4.6V ±2% threshold, operates down to VCC = 1.0V, draws only 35µA supply current, and features internal hysteresis for noise immunity-used in critical µP power monitoring for portable equipment and intelligent instruments.
For engineers reviewing the MAX6806XR46-T datasheet, MAX6806XR46-T pinout, MAX6806XR46-T application, or MAX6806XR46-T equivalent, this device serves as a low-power, single-supply reset supervisor with guaranteed reset assertion during brownout, power-up, and power-down sequences in battery-powered and industrial embedded systems.
Technical Context
The MAX6806XR46-T implements a precision bandgap-based voltage reference and comparator with built-in hysteresis (VHYST = 0.02–0.03 × VTH−), enabling stable switching at VCC transitions without external components. Its reset delay is 30µs under 1mV/µs VCC fall rate, and it guarantees valid RESET output down to VCC = 1.0V.
This variant belongs to the MAX6806 family with fixed 4.6V threshold and SC70-3 package. It lacks manual reset (MR) input-only present in SOT143 variants-and uses a 3-pin configuration where Pin 1 is RESET, Pin 2 is GND, and Pin 3 is VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.60V ±2% (VTH−), ensuring reliable detection of 5V supply undervoltage before system ICs drop below operational minimum. |
| Supply Voltage Range | 1.0V to 5.5V (TA = −40°C to +85°C), enabling operation during deep brownout and full-system power sequencing. |
| Supply Current | 35µA typical at VCC = 3.6V, minimizing impact on battery life in portable equipment. |
| RESET Output Type | Active-low, push-pull - drives logic-low directly without external pullup, compatible with standard µP reset inputs. |
| Hysteresis | 0.02–0.03 × VTH− (≈92–138mV), preventing output chatter near threshold during slow or noisy VCC transitions. |
| Reset Delay | 30µs (VCC falling at 1mV/µs), providing fast response to supply collapse while avoiding false triggers from transients. |
| Operating Temperature | −40°C to +85°C, qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
MAX6806XR46-T is housed in a 3-pin SC70 package (outline 21-0075), measuring 2.0mm × 1.25mm × 0.95mm, optimized for space-constrained portable designs. Tape-and-reel delivery (2500 pcs minimum) supports automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low when VCC < 4.6V; sinks current to ground and sources current to VCC internally - no external pullup required. |
| 2 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane for accurate threshold tracking. |
| 3 | VCC | Primary supply input; powers internal circuitry and defines reset threshold reference - also monitored for undervoltage condition. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% accurate reset threshold | Guarantees detection within 92mV of 4.6V across temperature, eliminating need for calibration or trimming in 5V ±5% systems. |
| No external components required | Integrates reference, comparator, hysteresis, and push-pull driver - reduces BOM count and PCB area vs. discrete supervisor solutions. |
| RESET valid down to VCC = 1.0V | Ensures deterministic reset assertion even during severe brownout or battery depletion, supporting graceful shutdown in portable devices. |
| Immunity to negative-going VCC transients | Withstands sub-µs supply dips up to 100mV overdrive without false reset, reducing need for bulk capacitance or filtering. |
| Low 35µA quiescent current | Extends battery runtime in always-on monitoring applications such as barcode scanners and handheld instruments. |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
|
Use Scenario: Power monitoring in handheld barcode scanners with Li-ion battery discharge profiles. IC Role / Device Role / Timing Role: Voltage detector asserting active-low reset when battery drops below 4.6V, halting processor execution before data corruption occurs. Use Value: Prevents firmware crash and memory corruption during low-battery operation by triggering controlled shutdown before VCC falls below µP minimum operating voltage. |
Use Scenario: Supervision of microcontroller supply in portable multimeters and environmental sensors. IC Role / Device Role / Timing Role: Precision reset generator ensuring clean boot after power-on and recovery from brownout events. Use Value: Eliminates need for RC-based reset circuits, improving startup reliability and long-term accuracy across temperature and aging. |
| Critical µP and µC Power Monitoring | Computers and Controllers |
|
Use Scenario: Reset supervision for ARM Cortex-M0+ MCU in industrial edge node with 5V rail. IC Role / Device Role / Timing Role: Monitors main 5V supply and asserts RESET until VCC stabilizes above 4.6V with 30µs delay. Use Value: Guarantees µP remains held in reset during power ramp-up, preventing spurious code execution before clock and memory are stable. |
Use Scenario: Power-good signaling in compact embedded controllers for HVAC and building automation. IC Role / Device Role / Timing Role: Provides deterministic reset pulse synchronized to 5V rail stability, interfacing directly to controller reset pin. Use Value: Replaces larger supervisory ICs with integrated watchdog or POR, reducing footprint while maintaining timing integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR46-T | Same 4.6V threshold, but includes built-in watchdog timer and 200ms reset timeout; higher ICC (1.2µA typ). | Required where system-level fault recovery beyond simple reset is needed (e.g., lockup detection). | Select MAX6326UR46-T only if watchdog functionality is explicitly required; MAX6806XR46-T offers lower cost and simpler integration for pure voltage monitoring. |
| TLV809K46DBZR | 4.6V threshold, ±1% accuracy, SOT23-3 package, but RESET valid only down to VCC = 1.6V (not 1.0V). | Suitable for 3.3V/5V systems where brownout depth is limited; not recommended for deep-battery-discharge scenarios. | Choose TLV809K46DBZR for tighter threshold tolerance in non-critical brownout environments; MAX6806XR46-T preferred when reset validity to 1.0V is mandatory. |
Compared with MAX6326UR46-T and TLV809K46DBZR, the MAX6806XR46-T delivers optimal balance of ultra-low current (35µA), deep-VCC reset validity (1.0V), and minimal BOM overhead - making it ideal for cost-sensitive, battery-constrained applications requiring only precision voltage detection without added complexity.
Availability
MAX6806XR46-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, critical µP and µC power monitoring, computers, and controllers requiring stable component supply and long-term industrial availability.
Supply support for MAX6806XR46-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, computing, and consumer applications.
The MAX6806 family was designed specifically for low-power, precision voltage monitoring in microprocessor systems-emphasizing accuracy, small size, and minimal external components for portable and embedded use cases.
FAQ
What is the reset threshold voltage of the MAX6806XR46-T?
The MAX6806XR46-T has a factory-trimmed reset threshold of 4.60V ±2% (VTH−), meaning it asserts RESET when VCC falls below 4.508V and releases RESET when VCC rises above 4.692V at +25°C. This value is guaranteed across −40°C to +85°C with a tempco of 30ppm/°C, making it suitable for 5V ±5% supply monitoring.
Does the MAX6806XR46-T support manual reset functionality?
No, the MAX6806XR46-T does not support manual reset. Manual reset (MR) input is only available in the 4-pin SOT143 package variants (e.g., MAX6806US46-T). The MAX6806XR46-T uses a 3-pin SC70 package with pins dedicated solely to RESET, GND, and VCC - no MR terminal is present or internally connected.
What is the minimum supply voltage at which MAX6806XR46-T guarantees valid RESET output?
The MAX6806XR46-T guarantees valid active-low RESET output down to VCC = 1.0V, as confirmed in the Electrical Characteristics table. Below 1.0V, the output becomes high-impedance. This capability ensures reliable reset assertion during deep brownout conditions common in battery-powered applications.
Can the MAX6806XR46-T be used with a 3.3V microcontroller supply?
Yes, the MAX6806XR46-T can monitor a 5V supply while interfacing with a 3.3V µP, because its RESET output is push-pull and compatible with 3.3V logic levels. However, it is not intended to monitor a 3.3V rail directly - for that, use MAX6806 variants with 2.6V or 3.2V thresholds (e.g., MAX6806XR26-T or MAX6808XR32-T).
What package type and dimensions does the MAX6806XR46-T use?
The MAX6806XR46-T uses the 3-pin SC70 package (outline 21-0075), measuring 2.0mm × 1.25mm × 0.95mm with a 0.65mm pitch. It is supplied in tape-and-reel format with a minimum order quantity of 2500 units, optimized for high-volume automated placement in compact portable electronics.
MAX6806XR46-T 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
MAX6806XR46-T FAQ
1.How can I place an order for MAX6806XR46-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806XR46-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 MAX6806XR46-T reliable?
The price and inventory of MAX6806XR46-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806XR46-T is usually 5 days.
3.What payment methods are accepted for MAX6806XR46-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806XR46-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806XR46-T?
MAX6806XR46-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806XR46-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 MAX6806XR46-T?
For technical support, including MAX6806XR46-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806XR46-T requirements.
6.How does Aetrix verify that MAX6806XR46-T is sourced from the original manufacturer or authorized distributors?
All MAX6806XR46-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 MAX6806XR46-T meets industry standards.
7.What is the process for return or replacement of MAX6806XR46-T?
All MAX6806XR46-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806XR46-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 MAX6806XR46-T part is unused and in its original packaging.
Return procedure for MAX6806XR46-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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