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Analog Devices Inc./Maxim Integrated MAX6806XR46
- Part No.:
- MAX6806XR46
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806XR46.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:685
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Product details
Overview
MAX6806XR46 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-low push-pull RESET output, guaranteed operation down to VCC = 1.0V, 35µA supply current, and internal hysteresis - enabling reliable brownout detection in portable battery-powered equipment and critical µP power monitoring applications.
For engineers reviewing the MAX6806XR46 datasheet, MAX6806XR46 pinout, MAX6806XR46 application, or MAX6806XR46 equivalent, this device serves as a low-power, high-accuracy supervisory solution for 5V digital systems requiring deterministic reset assertion during power-up, power-down, and transient events without external components.
Technical Context
The MAX6806XR46 implements a precision bandgap-based voltage comparator with built-in hysteresis (VHYST = 0.02–0.03 × VTH−), ensuring stable reset transitions during supply ramping. Its reset logic asserts RESET low when VCC falls below 4.6V (±2% at +25°C) and deasserts immediately upon VCC rising above the hysteresis-adjusted threshold (VTH+ ≈ 4.623V).
This variant uses a 3-pin SC70 package with no manual reset input; RESET is push-pull active-low, sinking up to 1mA at VCC = 2.0V (VOL ≤ 0.4V), and sourcing capability is not supported. It operates across −40°C to +85°C with supply current stable from 1.0V to 5.5V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.60V ±2% (4.508V–4.692V at +25°C); ensures reset assertion before 5V system ICs drop below minimum operating voltage. |
| Supply Voltage Range | 1.0V to 5.5V; supports valid RESET output even during deep brownout down to 1V, critical for low-voltage retention. |
| Supply Current | 35µA typical at VCC = 3.6V; enables multi-year battery life in portable instrumentation and barcode scanners. |
| RESET Output Type | Active-low push-pull; drives CMOS inputs directly without pull-up resistor, simplifying interface to µP reset pins. |
| Hysteresis | 0.02–0.03 × VTH− (≈92–138mV); prevents output chatter near threshold during slow-ramping or noisy supplies. |
| Operating Temp | −40°C to +85°C; qualified for industrial embedded controllers and intelligent instruments deployed in uncontrolled environments. |
| Reset Delay | 30µs typical (VCC falling at 1mV/µs); provides fast, deterministic response to supply collapse without added timing circuitry. |
Pinout & Package
MAX6806XR46 is housed in a 3-pin SC70 package (outline 21-0075), measuring 2.0mm × 2.1mm × 0.95mm, optimized for space-constrained portable electronics. No manual reset (MR) or NC pins are present.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output; sinks current when asserted; valid logic low down to VCC = 1.0V. |
| 2 | GND | Analog ground reference; must be connected to system ground plane for accurate threshold sensing. |
| 3 | VCC | Power supply input; monitors same rail as protected system; accepts 1.0V–5.5V with full functionality. |
Key Features
| Feature | Design Value |
|---|---|
| ±2% threshold accuracy | Guarantees reset assertion within 92mV of 4.6V at +25°C, eliminating need for calibration or trimming in 5V ±5% systems. |
| No external components | Integrates reference, comparator, hysteresis, and output driver - reduces BOM count and PCB area vs. discrete solutions. |
| Immunity to VCC transients | Rejects negative-going supply glitches <100µs wide (depending on overdrive), preventing false resets in electrically noisy environments. |
| Low 35µA quiescent current | Enables continuous supervision in always-on battery-backed systems without compromising runtime. |
| SC70 footprint compatibility | Matches industry-standard 3-pin SC70 land pattern (90-0208), supporting automated placement and reflow in high-volume manufacturing. |
Applications
| Portable/Battery-Powered Equipment | Critical µP and µC Power Monitoring |
|---|---|
|
Use Scenario: Handheld barcode scanner powered by single-cell Li-ion (3.0–4.2V nominal) with firmware watchdog requiring clean reset on undervoltage. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-low RESET to µP reset pin when battery sags below 4.6V during high-current decode bursts. Use Value: Prevents erratic firmware execution by guaranteeing reset before µP enters undefined state, using only 35µA standby current. |
Use Scenario: Industrial PLC controller with 5V backplane where power integrity must be verified before boot sequence initiation. IC Role / Device Role / Timing Role: Primary reset generator monitoring main 5V rail; asserts RESET until VCC stabilizes >4.6V with 30µs delay. Use Value: Eliminates need for RC timing network, improving reset timing consistency across temperature (±30ppm/°C tempco). |
| Intelligent Instruments | Computers |
|
Use Scenario: Portable multimeter with segmented LCD and microcontroller, requiring reliable power-on reset independent of battery aging. IC Role / Device Role / Timing Role: Precision threshold detector replacing zener-based reset circuits; immune to supply ripple due to internal hysteresis. Use Value: Maintains ±2% threshold accuracy over −40°C to +85°C, ensuring consistent reset behavior across field operating conditions. |
Use Scenario: Embedded x86-based thin client with legacy ISA-style reset signaling, needing TTL-compatible active-low reset pulse. IC Role / Device Role / Timing Role: Supervisory IC driving motherboard reset line; push-pull output meets 1mA sink requirement without external buffer. Use Value: Delivers guaranteed VOL ≤ 0.4V at 1mA load, ensuring noise margin compliance with Intel 82802 firmware hub specifications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326UR46-T | Same 4.6V threshold, but uses micropower 0.9µA supply current and open-drain output; lacks push-pull drive strength. | Suitable for ultra-low-power wake-on-reset systems, but requires external pull-up and cannot directly drive heavy loads. | Select when standby current is primary constraint and reset load is high-impedance (e.g., FPGA configuration pins). |
| TLV803EB26DBZR | 4.63V threshold (±0.5%), 0.5µA supply current, SOT-23 package; no hysteresis spec provided in datasheet. | Better accuracy and lower current, but hysteresis must be externally added for noisy rails; not qualified for industrial temp range. | Prefer for cost-sensitive consumer devices with clean 5V rails and no requirement for −40°C operation. |
Compared with MAX6806XR46, MAX6326UR46-T trades push-pull drive and industrial temperature support for 40× lower quiescent current, while TLV803EB26DBZR offers tighter threshold tolerance but sacrifices hysteresis assurance and extended temperature qualification - making MAX6806XR46 optimal for robust, no-compromise µP supervision in demanding environments.
Availability
MAX6806XR46 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical µP and µC power monitoring, and intelligent instruments requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6806XR46 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, computing, and communications applications, emphasizing reliability, integration, and performance in harsh environments.
The MAX6806 family delivers highly accurate, low-power voltage supervision for microprocessor systems - engineered specifically to replace discrete reset circuits in space- and power-constrained digital systems without sacrificing timing determinism or thermal stability.
FAQ
What is the exact reset threshold voltage of the MAX6806XR46 and how tightly is it specified?
The MAX6806XR46 has a nominal reset threshold of 4.60V, guaranteed over temperature and process to ±2% (4.508V to 4.692V at +25°C). This specification is tested and guaranteed across the full −40°C to +85°C operating range, with a typical tempco of 30ppm/°C - ensuring predictable reset behavior in industrial-grade applications without recalibration.
Does the MAX6806XR46 support manual reset functionality?
No, the MAX6806XR46 does not support manual reset. It is packaged in a 3-pin SC70 configuration with only RESET, GND, and VCC pins. Manual reset (MR) is only available on the 4-pin SOT143 variants (e.g., MAX6806US46-T), which include an internal 80kΩ pulldown resistor on the MR input.
What is the minimum supply voltage at which the MAX6806XR46 guarantees valid RESET output?
The MAX6806XR46 guarantees a valid active-low RESET output down to VCC = 1.0V. At this voltage, RESET remains a logic low (VOL ≤ 0.3V at 20µA sink) - enabling reliable supervision during deep brownout conditions where other supervisors may fail to assert reset.
Can the MAX6806XR46 be used with a 3.3V microcontroller reset input?
Yes, the MAX6806XR46 is fully compatible with 3.3V µP reset inputs. Its push-pull RESET output drives low to ≤0.4V at 1mA sink (VCC = 2.0V) and remains valid across VCC = 1.0V–5.5V, ensuring proper logic-level compatibility and noise margin regardless of the host µP's I/O voltage.
How does the MAX6806XR46 handle power supply transients, and what protection does it offer?
The MAX6806XR46 is immune to short-duration negative-going VCC transients - for example, it ignores 100mV overdrive glitches lasting under ~100µs (per Figure 3 in the datasheet). This immunity is achieved via internal filtering and comparator design, eliminating false resets in electrically noisy environments like motor-driven portable equipment.
MAX6806XR46 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 FAQ
1.How can I place an order for MAX6806XR46 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806XR46 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 reliable?
The price and inventory of MAX6806XR46 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806XR46 is usually 5 days.
3.What payment methods are accepted for MAX6806XR46?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806XR46 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806XR46?
MAX6806XR46 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806XR46 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?
For technical support, including MAX6806XR46 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806XR46 requirements.
6.How does Aetrix verify that MAX6806XR46 is sourced from the original manufacturer or authorized distributors?
All MAX6806XR46 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 meets industry standards.
7.What is the process for return or replacement of MAX6806XR46?
All MAX6806XR46 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806XR46, 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 part is unused and in its original packaging.
Return procedure for MAX6806XR46:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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