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Analog Devices Inc./Maxim Integrated MAX6806XR26-T
- Part No.:
- MAX6806XR26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806XR26-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:13,407
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Product details
Overview
MAX6806XR26-T 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 portable instrumentation.
For engineers reviewing the MAX6806XR26-T datasheet, MAX6806XR26-T pinout, MAX6806XR26-T application, or MAX6806XR26-T equivalent, key selection criteria include its SC70-3 package, 35µA quiescent current, internal hysteresis, immunity to VCC transients, and compatibility with low-voltage µP reset interfaces requiring valid logic levels at near-dead-battery conditions.
Technical Context
The MAX6806XR26-T implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−), ensuring stable reset assertion/deassertion during supply ramp-up and brownout events. Its push-pull output drives CMOS inputs directly without external pullup components.
It operates across −40°C to +85°C with supply voltage range 1.0V to 5.5V, and its reset delay is ≤30µs for VCC falling at 1mV/µs. The device includes no manual reset input (SC70-3 package lacks MR pin), distinguishing it from SOT143 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.60V ±2% (VTH−), accurate enough to monitor 2.5V ±5% supplies before system ICs drop below minimum operating voltage |
| Supply Voltage Range | 1.0V to 5.5V - enables use in ultra-low-power wake-up circuits and single-cell Li-ion or alkaline systems |
| Quiescent Current | 35µA typical at VCC = 3.6V - minimizes battery drain in always-on monitoring applications |
| RESET Output Type | Active-low push-pull - eliminates need for external pullup resistor and ensures fast, rail-to-rail logic transitions |
| Reset Delay | ≤30µs (VCC falling at 1mV/µs) - provides rapid response to supply collapse without excessive latency |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable equipment environments |
| Threshold Tempco | 30ppm/°C - ensures stable trip point across temperature, critical for precision power sequencing |
Pinout & Package
MAX6806XR26-T is housed in a 3-pin SC70 package (outline 21-0075), footprint-compatible with SOT23 but smaller (1.25mm × 0.85mm). This RoHS-compliant, tape-and-reel packaged device supports high-density PCB layouts in space-constrained portable designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (active-low) | Push-pull output asserted low when VCC < 2.6V; sinks/sourcing capability supports direct drive of µP reset pins |
| 2 | GND | Ground reference for internal comparator and output stage; must be low-impedance for noise immunity |
| 3 | VCC | Power supply input; valid from 1.0V to 5.5V; internal circuitry remains functional and RESET valid down to 1.0V |
Key Features
| Feature | Design Value |
|---|---|
| ±2% accurate reset threshold | Guarantees detection before downstream ICs (e.g., 2.5V µCs) exit specification - no calibration or trimming required |
| Internal hysteresis (0.02–0.03×VTH−) | Prevents output chatter during slow or noisy VCC ramps, eliminating need for external RC networks |
| 35µA supply current | Enables multi-year battery life in always-on supervisory roles, such as smart sensor nodes or metering devices |
| RESET valid to VCC = 1.0V | Ensures deterministic reset state even during deep brownout - critical for data retention and safe shutdown in µP systems |
| Immunity to negative-going VCC transients | Rejects sub-100µs dips up to ~100mV below threshold, reducing false resets in electrically noisy environments |
Applications
| Portable Medical Monitors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered ECG or glucose meters requiring fail-safe shutdown before memory corruption occurs. IC Role / Device Role / Timing Role: Precision supply monitor asserting reset prior to µC brownout, enabling controlled flash write abort and SRAM retention. Use Value: 2.6V threshold aligns with 2.5V system rails; 1.0V RESET validity ensures reset remains asserted until full power collapse. |
Use Scenario: DIN-rail mounted I/O modules exposed to 24V DC supply ripple and transient coupling. IC Role / Device Role / Timing Role: Primary power supervisor detecting undervoltage on 3.3V logic rail derived from switching regulator. Use Value: ±2% accuracy and 30ppm/°C tempco maintain trip consistency across wide ambient ranges; transient immunity prevents spurious resets. |
| Barcode Scanner Handhelds | Smart Energy Meters |
|
Use Scenario: Intermittent-use handheld scanners powered by rechargeable Li-ion cells with steep discharge curves. IC Role / Device Role / Timing Role: Low-quiescent-current voltage detector triggering controlled sleep/wake and preventing boot failure at end-of-discharge. Use Value: 35µA ICC extends standby time; SC70-3 footprint saves board area in compact ergonomic housings. |
Use Scenario: Revenue-grade meters operating unattended for 15+ years with backup supercapacitor holdup. IC Role / Device Role / Timing Role: Primary reset generator for metrology SoC, ensuring clean startup after capacitor discharge recovery. Use Value: Guaranteed RESET assertion at VCC ≥ 1.0V enables reliable restart even after extended low-voltage holdup periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB26DBZR | 2.63V threshold (±1%), SOT23-3, 300nA IQ, open-drain output | Requires external pullup; lower IQ suits ultra-low-power sleep modes, but lacks push-pull drive strength | Select when nanowatt standby dominates over reset drive capability and board space allows pullup resistor |
| TPS3808G33DBVR | 3.3V threshold, SOT23-6, 1.1µA IQ, adjustable delay, push-pull output | Higher threshold and programmable delay suit 3.3V systems needing timing control; larger package and higher cost | Select when system requires configurable reset timeout or operates from 3.3V rail with tighter supply tolerance |
Compared with TLV803EB26DBZR and TPS3808G33DBVR, the MAX6806XR26-T delivers optimal balance of precision (±2%), low-cost push-pull drive, minimal board area (SC70-3), and proven robustness in portable 2.5V/2.6V systems - making it ideal where deterministic reset behavior and space efficiency are prioritized over ultra-low IQ or configurability.
Availability
MAX6806XR26-T is available at Aetrix Electronics and suitable for portable medical monitors, industrial PLC I/O modules, barcode scanner handhelds, and smart energy meters requiring stable component supply and long-term manufacturability.
Supply support for MAX6806XR26-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 communications applications.
The MAX6806 family was engineered as a cost-effective, precision voltage supervisor for microprocessor systems requiring guaranteed reset assertion at well-defined supply thresholds - targeting portable, battery-operated, and industrial embedded designs.
FAQ
What is the exact reset threshold voltage of the MAX6806XR26-T?
The MAX6806XR26-T has a factory-trimmed nominal reset threshold of 2.60V with ±2% accuracy over temperature (−40°C to +85°C), corresponding to VTH− = 2.548V (min) to 2.652V (max) at +25°C. This value is specified for VCC falling and includes built-in hysteresis to prevent oscillation near the trip point.
Does the MAX6806XR26-T support manual reset functionality?
No, the MAX6806XR26-T 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 available only on 4-pin SOT143 variants like MAX6806US26-T, which include an internal 80kΩ pulldown resistor on the MR input.
What is the minimum supply voltage at which the MAX6806XR26-T guarantees valid RESET output?
The MAX6806XR26-T guarantees a valid active-low RESET output down to VCC = 1.0V. Below this, the output becomes high-impedance. This feature ensures deterministic reset behavior during deep brownout conditions common in single-cell battery applications.
Can the MAX6806XR26-T be used with a 1.8V microcontroller supply rail?
Yes, the MAX6806XR26-T can monitor a 1.8V rail, but only as a supervisory device - its 2.6V threshold is higher than 1.8V, so it will assert reset continuously. To supervise 1.8V systems, use a variant with lower threshold (e.g., MAX6806XR23-T at 2.3V) or select a dedicated 1.8V detector like MAX6315US29D3-T.
Is the MAX6806XR26-T pin-compatible with other packages in the MAX6806 family?
No, the MAX6806XR26-T in SC70-3 is not pin-compatible with SOT23-3, SOT143-4, µMAX-8, or SO-8 variants. Pin count, pinout, and package dimensions differ significantly - for example, SOT143 adds MR, while µMAX/SO include NC pins and different pin 1 orientation. Board layout must be redesigned for package change.
MAX6806XR26-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
MAX6806XR26-T FAQ
1.How can I place an order for MAX6806XR26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806XR26-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 MAX6806XR26-T reliable?
The price and inventory of MAX6806XR26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806XR26-T is usually 5 days.
3.What payment methods are accepted for MAX6806XR26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806XR26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806XR26-T?
MAX6806XR26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806XR26-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 MAX6806XR26-T?
For technical support, including MAX6806XR26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806XR26-T requirements.
6.How does Aetrix verify that MAX6806XR26-T is sourced from the original manufacturer or authorized distributors?
All MAX6806XR26-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 MAX6806XR26-T meets industry standards.
7.What is the process for return or replacement of MAX6806XR26-T?
All MAX6806XR26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806XR26-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 MAX6806XR26-T part is unused and in its original packaging.
Return procedure for MAX6806XR26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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