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Analog Devices Inc./Maxim Integrated MAX6806XR26
- Part No.:
- MAX6806XR26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806XR26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,100
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Product details
Overview
MAX6806XR26 from Maxim Integrated is a precision voltage detector IC designed for power-supply monitoring in microprocessor-based systems. It features a factory-preset 2.6V ±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 intelligent instruments.
For engineers reviewing the MAX6806XR26 datasheet, MAX6806XR26 pinout, MAX6806XR26 application, or MAX6806XR26 equivalent, this device serves as a low-quiescent-current (35µA), hysteresis-equipped supervisory circuit for critical µP power monitoring where supply stability, manual-reset capability (in SOT143), and transient immunity are required.
Technical Context
The MAX6806XR26 implements a comparator-based reset architecture with internal hysteresis (VHYST = 0.02–0.03 × VTH−), ensuring stable switching during supply ramp-up/down without oscillation. Its reset assertion is purely voltage-triggered - no timeout delay - with immediate response to VCC crossing the falling threshold (VTH− = 2.548V to 2.652V at +25°C).
It operates across −40°C to +85°C, supports VCC from 1.0V to 5.5V, and delivers RESET logic levels compatible with CMOS inputs: VOL ≤ 0.3V at ISINK = 20µA/VCC = 1.0V and VOH ≥ 0.8×VCC at ISOURCE = 2.0mA/VCC = 5.0V. The SC70-3 package enables space-constrained portable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.60V ±2% (VTH−); 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 portable equipment |
| RESET Output Type | Active-low, push-pull; drives CMOS inputs directly without external pullup |
| VCC Operating Range | 1.0V to 5.5V; valid reset assertion down to 1.0V supports deep brownout detection |
| Hysteresis | 0.02–0.03 × VTH−; prevents chatter near threshold during slow-ramping supplies |
| Tempco | 30ppm/°C; maintains threshold accuracy over full industrial temperature range |
| Transient Immunity | Immune to negative-going VCC transients ≤100µs at 100mV overdrive; reduces false resets |
Pinout & Package
MAX6806XR26 is housed in a 3-pin SC70 package (outline 21-0075), footprint-compatible with SOT23 but 30% smaller. Pin 1 = RESET (active-low push-pull), Pin 2 = GND, Pin 3 = VCC.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output; sinks current when VCC < VTH−; valid down to VCC = 1.0V |
| 2 | GND | Ground reference for internal comparator and output stage; must be low-impedance |
| 3 | VCC | Supply input; powers internal circuitry and defines reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Precision Reset Threshold | 2.6V ±2% over −40°C to +85°C - eliminates need for external trimming or calibration |
| No External Components | Self-contained detector - no resistors, capacitors, or references required for basic operation |
| Low Supply Current | 35µA typical - extends battery life in portable/bar-code scanner applications |
| Push-Pull Output Drive | Direct CMOS compatibility - no pullup resistor needed, reducing BOM count and board area |
| SC70-3 Miniature Package | 1.25mm × 0.85mm footprint - ideal for space-constrained handheld and wearable devices |
Applications
| Portable/Battery-Powered Equipment | Bar-Code Scanners |
|---|---|
|
Use Scenario: Power management in handheld scanners with single-cell Li-ion or alkaline batteries. IC Role / Device Role / Timing Role: Voltage supervisor detecting brownout before MCU lockup during battery discharge. Use Value: Prevents corrupted memory writes and firmware crashes by asserting reset at 2.6V ±2%, matching typical 2.5V system rails. |
Use Scenario: Embedded controller in cordless bar-code scanners requiring reliable cold-start and low-voltage recovery. IC Role / Device Role / Timing Role: Precision reset generator ensuring deterministic boot sequence after battery insertion or wake-up. Use Value: 35µA quiescent current minimizes standby drain; SC70-3 package fits tight PCB layouts. |
| Critical µP and µC Power Monitoring | Intelligent Instruments |
|
Use Scenario: Industrial microcontroller units operating in unregulated 3.3V or 5V environments subject to line transients. IC Role / Device Role / Timing Role: Fault-tolerant reset source immune to sub-100µs negative VCC spikes. Use Value: Internal hysteresis and transient immunity eliminate false resets, improving system uptime. |
Use Scenario: Portable test equipment (e.g., multimeters, data loggers) requiring accurate power-on reset and battery-level warning. IC Role / Device Role / Timing Role: Primary supervisory IC validating VCC before enabling ADC, display, and communication peripherals. Use Value: Guaranteed RESET validity down to VCC = 1.0V allows graceful shutdown sequencing before complete power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US26D3-T | Same 2.6V threshold, ±1.5% accuracy, 1.8µA supply current, SOT143-4 with MR input | Lower ICC enables ultra-low-power applications; MR pin adds user-initiated reset capability | Select when manual reset or <10µA ICC is required - not pin-compatible with SC70-3 |
| TLV803EB26DBZR | 2.63V threshold, ±2.5% accuracy, 0.5µA ICC, SOT23-3, open-drain output | Ultra-low ICC suits energy-harvesting systems; open-drain requires external pullup | Select for micropower designs where push-pull drive is not mandatory - different output topology |
Compared with MAX6806XR26, MAX6315US26D3-T offers tighter threshold accuracy and MR functionality in SOT143 but lacks SC70-3 packaging; TLV803EB26DBZR provides 70× lower ICC but requires external pullup and has looser tolerance - trade-offs exist in accuracy, power, and interface compatibility.
Availability
MAX6806XR26 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, bar-code scanners, and critical µP power monitoring requiring stable component supply, consistent parametric performance, and long-term industrial lifecycle support.
Supply support for MAX6806XR26 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 demanding industrial, computing, and communications applications.
The MAX6806 family delivers high-accuracy, low-power voltage supervision for microprocessor systems - engineered specifically for reliable power-on reset, brownout protection, and transient-immune operation in space- and power-constrained designs.
FAQ
What is the exact reset threshold voltage of MAX6806XR26 and how tightly is it specified?
The MAX6806XR26 has a factory-trimmed nominal reset threshold of 2.60V, guaranteed over temperature and process to ±2% (2.548V to 2.652V at +25°C). This accuracy is maintained across the full −40°C to +85°C operating range with a tempco of only 30ppm/°C, making it suitable for systems using 2.5V ±5% or 3.3V ±10% supplies.
Does MAX6806XR26 support manual reset functionality?
No, MAX6806XR26 does not support manual reset. It is packaged in SC70-3, which contains only RESET, GND, and VCC pins. Manual reset (MR) is available only on the 4-pin SOT143 variants (e.g., MAX6806US26-T), which include an internal 80kΩ pulldown resistor on the MR input.
What is the minimum VCC voltage at which MAX6806XR26 guarantees valid RESET output?
MAX6806XR26 guarantees valid RESET output down to VCC = 1.0V. Specifically, the RESET pin remains a logic low (VOL ≤ 0.3V) when sinking 20µA at VCC = 1.0V. Below 1.0V, the output becomes high-impedance - a design consideration for systems requiring reset assertion all the way to ground.
Can MAX6806XR26 be used with microcontrollers that have bidirectional reset pins?
MAX6806XR26 is not recommended for direct interfacing with µPs having bidirectional reset I/O (e.g., Motorola 68HC11), because its push-pull output can cause contention. For such applications, use MAX6808XR26-T instead - its open-drain RESET output avoids conflict when the µP drives the line high during normal operation.
What package type and footprint does MAX6806XR26 use, and is it RoHS-compliant?
MAX6806XR26 uses the 3-pin SC70 package (outline 21-0075), measuring 1.25mm × 0.85mm with 0.65mm lead pitch. It is RoHS-compliant and supplied in tape-and-reel format (2500-piece minimum order quantity). The top mark "AAB" identifies the 2.6V variant in SC70.
MAX6806XR26 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
MAX6806XR26 FAQ
1.How can I place an order for MAX6806XR26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806XR26 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 MAX6806XR26 reliable?
The price and inventory of MAX6806XR26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806XR26 is usually 5 days.
3.What payment methods are accepted for MAX6806XR26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806XR26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806XR26?
MAX6806XR26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806XR26 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 MAX6806XR26?
For technical support, including MAX6806XR26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806XR26 requirements.
6.How does Aetrix verify that MAX6806XR26 is sourced from the original manufacturer or authorized distributors?
All MAX6806XR26 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 MAX6806XR26 meets industry standards.
7.What is the process for return or replacement of MAX6806XR26?
All MAX6806XR26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806XR26, 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 MAX6806XR26 part is unused and in its original packaging.
Return procedure for MAX6806XR26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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