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Analog Devices Inc./Maxim Integrated MAX6807UR26-T
- Part No.:
- MAX6807UR26-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6807UR26-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MAX6807UR26-T from Maxim Integrated is an active-high, push-pull voltage supervisor IC designed for precise power supply monitoring in microcontroller-based systems. It asserts a logic-high RESET signal when VCC falls below its factory-trimmed 2.6V threshold (±2% accuracy), guarantees valid output down to VCC = 1.2V, draws only 35µA typical supply current, and operates across –40°C to +85°C - ideal for battery-powered instrumentation and portable embedded controllers.
For engineers reviewing the MAX6807UR26-T datasheet, MAX6807UR26-T pinout, MAX6807UR26-T application, or MAX6807UR26-T equivalent, this device delivers deterministic reset timing with no external components, immunity to fast VCC transients (up to 100V/µs), and stable hysteresis-controlled switching - critical for reliable µP power-up sequencing and brownout recovery in space-constrained SOT23 designs.
Technical Context
The MAX6807UR26-T implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output chatter near the 2.6V reset threshold. Its active-high push-pull output drives directly into CMOS inputs without pull-up resistors and remains valid over VCC = 1.2V to 5.5V.
It features no manual reset input (SOT23 package lacks MR pin), excludes open-drain functionality (distinguishing it from MAX6808), and shares pin compatibility only with other 3-pin SOT23 voltage detectors - not with 4-pin SOT143 or 8-pin µMAX variants of the same family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.6V ±2% (VTH− at +25°C); ensures reset assertion before system ICs drop below minimum operating voltage |
| Supply Voltage Range | 1.2V to 5.5V (–40°C to +85°C); supports single-cell Li-ion, 3.3V, and 5V rails |
| Supply Current | 35µA typical at VCC = 3.6V; enables multi-year battery life in always-on monitoring |
| RESET Output Type | Active-high, push-pull; eliminates need for external pull-up and drives high-impedance loads directly |
| Output Validity | RESET guaranteed high for VCC ≥ 1.2V; ensures deterministic state during low-VCC brownout recovery |
| Hysteresis | 0.02–0.03 × VTH−; prevents oscillation during slow-rising/falling VCC transitions near threshold |
| Transient Immunity | Immune to VCC negative transients ≤100V/µs; avoids false resets in noisy power environments |
Pinout & Package
MAX6807UR26-T is housed in a RoHS-compliant 3-pin SOT23 package (package code U3-1), with 1.3mm × 0.8mm footprint and 0.95mm height - optimized for high-density PCB layouts.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; sinks/source up to ±20mA; logic high when VCC < 2.6V |
| 2 | GND | Ground reference for internal comparator and output stage; must be low-impedance |
| 3 | VCC | Supply input; accepts 1.2V–5.5V; powers internal circuitry and drives RESET output |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.6V threshold | ±2% accuracy over temperature eliminates calibration and reduces BOM count |
| Active-high push-pull RESET | Direct interface to µP reset inputs without external pull-up or level-shifting |
| Ultra-low 35µA supply current | Enables continuous supervision in energy-harvesting and coin-cell applications |
| Internal hysteresis (20–30mV) | Prevents output chatter during marginal VCC conditions without external components |
| 100V/µs transient immunity | Rejects fast ESD-induced or switching-noise glitches on VCC line |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered handheld glucose meters requiring fail-safe power-on reset and brownout detection. IC Role / Device Role / Timing Role: Voltage supervisor asserting active-high RESET to ARM Cortex-M0 microcontroller during VCC dip below 2.6V. Use Value: Guarantees clean processor initialization before analog front-end biasing, preventing corrupted ADC readings. |
Use Scenario: DIN-rail mounted remote I/O nodes powered by 24VDC-to-3.3V isolated converters. IC Role / Device Role / Timing Role: Primary reset monitor ensuring µC restarts if 3.3V rail sags due to load transients or aging capacitors. Use Value: 35µA quiescent current minimizes standby loss; ±2% threshold ensures compliance with IEC 61000-4-11 immunity requirements. |
| Barcode Scanner Engines | Smart Energy Meters |
|
Use Scenario: Embedded laser scanner modules powered by single Li-ion cells (3.0–4.2V range). IC Role / Device Role / Timing Role: Supervises battery voltage decay and triggers controlled shutdown before EEPROM write corruption. Use Value: Active-high RESET directly controls enable pin of DC-DC converter, enabling graceful power-down sequence. |
Use Scenario: Revenue-grade electricity meters with dual-supply architecture (main + backup supercapacitor). IC Role / Device Role / Timing Role: Monitors main 3.3V rail and asserts RESET to secure MCU when voltage drops below 2.6V during grid outage. Use Value: Hysteresis prevents repeated reset toggling during capacitor discharge ramp, preserving flash endurance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB26DBZR | 2.63V threshold (±0.5%), 1.8–6V VCC range, 0.5µs propagation delay, SOT23-3 | Higher accuracy and faster response; requires tighter layout for noise immunity | Preferred where sub-1% threshold tolerance is mandated by safety standards (e.g., IEC 61508) |
| TPS3808G33DBVR | 3.08V fixed threshold, adjustable via external resistor, 1.5–6V VCC, 200ms watchdog timer option | Includes programmable delay and watchdog capability; larger footprint (SOT23-6) | Select when system requires both power-on reset and periodic health-check timeout functionality |
Compared with TLV803EB26DBZR and TPS3808G33DBVR, the MAX6807UR26-T offers lower quiescent current (35µA vs. 450nA–1.8µA) and simpler integration (no external RC timing), making it optimal for ultra-low-power, cost-sensitive reset-only use cases without watchdog needs.
Availability
MAX6807UR26-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, barcode scanner engines, and smart energy meters requiring stable component supply and long-term lifecycle support.
Supply support for MAX6807UR26-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 markets.
The MAX6806/MAX6807/MAX6808 family was engineered to replace discrete reset circuits with integrated, factory-trimmed voltage supervisors - targeting space-constrained, low-power embedded systems needing guaranteed reset behavior without design overhead.
FAQ
What is the exact reset threshold voltage of the MAX6807UR26-T?
The MAX6807UR26-T has a factory-trimmed nominal reset threshold of 2.6V with ±2% accuracy over –40°C to +85°C. At +25°C, the specified range is 2.548V to 2.652V (VTH−). This threshold is guaranteed to assert RESET high whenever VCC falls below this value, and deassert when VCC rises above VTH+ (2.6V + hysteresis).
Does the MAX6807UR26-T support manual reset functionality?
No, the MAX6807UR26-T does not support manual reset. It is packaged in a 3-pin SOT23 configuration (pins: RESET, GND, VCC) and lacks the MR (manual reset) terminal. Manual reset is only available in the 4-pin SOT143 variant (e.g., MAX6807US26-T), which includes an internal 80kΩ pulldown resistor on the MR pin.
What is the minimum VCC required for valid RESET output operation in the MAX6807UR26-T?
The MAX6807UR26-T guarantees valid RESET output down to VCC = 1.2V. Below this voltage, the push-pull driver may not maintain logic-high levels reliably. This specification ensures robust brownout detection in systems powered by partially discharged batteries or low-voltage rails, unlike the MAX6806/MAX6808 variants which guarantee operation down to 1.0V.
Can the MAX6807UR26-T be used with a 1.8V supply rail?
Yes, the MAX6807UR26-T operates over VCC = 1.2V to 5.5V, fully covering 1.8V systems. Its 2.6V reset threshold remains accurate and functional at 1.8V VCC, and the active-high RESET output will drive correctly to interface with 1.8V logic inputs - provided the driven device accepts 1.8V-compatible high-level thresholds.
How does the hysteresis of the MAX6807UR26-T improve system reliability?
The MAX6807UR26-T incorporates internal hysteresis of 0.02–0.03 × VTH− (≈52–78mV at 2.6V), creating distinct rising (VTH+) and falling (VTH−) trip points. This prevents output oscillation when VCC lingers near the threshold during slow power ramps or noise-induced fluctuations - eliminating spurious resets that could destabilize microcontroller firmware execution.
MAX6807UR26-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 High
- Reset Timeout:
- 30µs Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-µMAX
MAX6807UR26-T FAQ
1.How can I place an order for MAX6807UR26-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6807UR26-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 MAX6807UR26-T reliable?
The price and inventory of MAX6807UR26-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6807UR26-T is usually 5 days.
3.What payment methods are accepted for MAX6807UR26-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6807UR26-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6807UR26-T?
MAX6807UR26-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6807UR26-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 MAX6807UR26-T?
For technical support, including MAX6807UR26-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6807UR26-T requirements.
6.How does Aetrix verify that MAX6807UR26-T is sourced from the original manufacturer or authorized distributors?
All MAX6807UR26-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 MAX6807UR26-T meets industry standards.
7.What is the process for return or replacement of MAX6807UR26-T?
All MAX6807UR26-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6807UR26-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 MAX6807UR26-T part is unused and in its original packaging.
Return procedure for MAX6807UR26-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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