My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6806UR26
- Part No.:
- MAX6806UR26
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806UR26.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:1,175
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6806UR26 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 operates down to VCC = 1.0V - enabling reliable brownout detection in battery-powered controllers and portable instrumentation.
For engineers reviewing the MAX6806UR26 datasheet, MAX6806UR26 pinout, MAX6806UR26 application, or MAX6806UR26 equivalent, key selection criteria include reset threshold accuracy, supply-current efficiency (35µA typ), VCC operating range (1.0V–5.5V), and compatibility with low-voltage µP reset interfaces requiring guaranteed logic-low assertion below 1V.
Technical Context
The MAX6806UR26 implements a precision bandgap-based voltage comparator with internal hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output oscillation during supply transients. Its reset assertion is triggered solely by VCC falling below the 2.6V threshold - no timeout delay or watchdog function is included.
It uses a push-pull output stage capable of sinking ≥20µA at VCC = 1.0V (VOL ≤ 0.3V) and sourcing up to 2.0mA at VCC = 5.0V (VOH ≥ 0.8×VCC), eliminating external pull-up components. The device is rated for operation from −40°C to +85°C and supports transient immunity up to 100V/µs on VCC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.60V ±2% (VTH−), ensuring accurate detection of 2.5V ±5% supply regulation loss |
| Supply Voltage Range | 1.0V to 5.5V - enables valid RESET assertion even during deep brownout or single-cell Li-ion discharge |
| Supply Current | 35µA typical at VCC = 3.6V - minimizes quiescent load in always-on power-monitoring circuits |
| RESET Output Type | Active-low push-pull - drives µP reset pins directly without external pull-up resistor |
| Hysteresis | 0.02–0.03 × VTH− - prevents chatter near threshold during slow-rising/falling VCC |
| Operating Temperature | −40°C to +85°C - qualified for industrial and portable equipment environments |
| VCC Transient Immunity | Rated to 100V/µs - suppresses false resets from ESD or switching noise on supply rail |
Pinout & Package
MAX6806UR26 is housed in a 3-pin SOT23 package (U3-1 outline), with pin 1 = RESET (active-low push-pull), pin 2 = GND, pin 3 = VCC. No manual reset (MR) or NC pins are present in this variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RESET) | Active-low reset output | Drives µP reset pin low when VCC < 2.6V; sinks current to guarantee logic-low state down to VCC = 1.0V |
| 2 (GND) | Ground reference | Common return path for internal comparator and output stage; must be low-impedance for stable threshold accuracy |
| 3 (VCC) | Supply input | Power source for internal circuitry; also monitored for reset condition; accepts 1.0V–5.5V with full functionality |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.6V threshold | ±2% accuracy over temperature ensures consistent reset point across −40°C to +85°C without calibration |
| Push-pull RESET output | Eliminates need for external pull-up resistor - simplifies BOM and PCB layout in space-constrained designs |
| Low 35µA supply current | Enables continuous monitoring in battery-backed systems with multi-year operational life |
| Valid RESET down to VCC = 1.0V | Guarantees clean system reset before µP enters undefined state during deep undervoltage conditions |
| Immunity to VCC transients | Withstands 100V/µs supply edge rates - avoids spurious resets in noisy industrial or automotive power environments |
Applications
| Portable/Battery-Powered Equipment | Intelligent Instruments |
|---|---|
Use Scenario: Handheld barcode scanner powered by single-cell Li-ion battery (2.7V–4.2V). IC Role / Device Role / Timing Role: Monitors battery voltage decay and asserts reset before µC fails due to insufficient supply headroom. Use Value: Prevents corrupted memory writes or erratic firmware execution during final 0.5V of discharge cycle. | Use Scenario: Digital multimeter with real-time display and data logging. IC Role / Device Role / Timing Role: Ensures clean power-on initialization and detects supply sag during high-current analog front-end sampling. Use Value: Eliminates display glitches and measurement errors caused by marginal VCC during transient loads. |
| Critical µP and µC Power Monitoring | Controllers |
Use Scenario: Industrial PLC controller with ARM Cortex-M4 core running real-time control loop. IC Role / Device Role / Timing Role: Provides deterministic reset signal when 3.3V supply drops below 2.6V due to overload or regulator fault. Use Value: Guarantees safe shutdown and restart sequence - preventing unsafe actuator states or memory corruption. | Use Scenario: HVAC zone controller using low-power MSP430 MCU with EEPROM storage. IC Role / Device Role / Timing Role: Detects brownout during AC line sags and triggers controlled save-and-halt before VCC falls below 2.5V. Use Value: Preserves configuration integrity and avoids EEPROM write corruption during power collapse. |
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%), 300ms minimum reset pulse width, open-drain output | Requires external pull-up; fixed timeout adds delay not present in MAX6806UR26's immediate assertion | Select when longer reset hold time is required for slow-start µPs or when open-drain flexibility is needed |
| TPS3808G33DBVR | 3.3V threshold (±0.5%), adjustable delay (0–10s), push-pull output, 1.8V–6.0V VCC range | Higher threshold and programmable delay make it unsuitable for 2.6V brownout detection without redesign | Choose only if system requires higher reset voltage or configurable reset timing - not a direct functional substitute |
Compared with TLV803EB26DBZR and TPS3808G33DBVR, the MAX6806UR26 delivers immediate, threshold-only reset assertion at precisely 2.6V with zero added delay and no external components - critical for fast-response, low-voltage embedded systems where timing predictability and component count are design priorities.
Availability
MAX6806UR26 is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, critical µP and µC power monitoring, and controllers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6806UR26 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 series belongs to Maxim's precision voltage detector product line, engineered specifically for accurate, low-power supply monitoring in µP/µC systems where minimal BOM count and guaranteed reset validity down to 1V are essential.
FAQ
What is the exact reset threshold voltage of the MAX6806UR26?
The MAX6806UR26 has a factory-trimmed nominal reset threshold of 2.60V with ±2% accuracy over temperature (−40°C to +85°C). At +25°C, the specified range is 2.548V to 2.652V for VCC falling. This threshold is optimized for detecting failure of 2.5V ±5% supplies before downstream ICs exit their operational voltage window.
Does the MAX6806UR26 provide a reset timeout or delay period?
No, the MAX6806UR26 does not include a reset timeout or programmable delay. Its RESET output asserts immediately when VCC falls below the 2.6V threshold and deasserts immediately when VCC rises above the hysteresis-adjusted threshold (VTH+ ≈ 2.626V). This behavior differs from supervisory circuits like the MAX63xx family and suits applications needing instantaneous response to supply faults.
Can the MAX6806UR26 operate with a 1.8V supply?
Yes, the MAX6806UR26 is fully functional with VCC as low as 1.0V. At 1.8V, it maintains guaranteed RESET output performance: VOL ≤ 0.4V when sinking 1.0mA, and ICC remains at 35µA typical. This makes it suitable for use with modern low-voltage µPs and SoCs that operate down to 1.8V or 1.2V rails.
Is the MAX6806UR26 pin-compatible with other devices in the MAX6806/MAX6807/MAX6808 family?
Yes - all 3-pin SOT23 variants (e.g., MAX6806UR26, MAX6807UR26, MAX6808UR26) share identical pinout: pin 1 = RESET/RESET, pin 2 = GND, pin 3 = VCC. However, output logic polarity and drive type differ: MAX6806UR26 is active-low push-pull, MAX6807UR26 is active-high push-pull, and MAX6808UR26 is active-low open-drain. Swapping requires schematic and firmware review.
What is the maximum VCC slew rate the MAX6806UR26 can tolerate without false triggering?
The MAX6806UR26 is rated for VCC slew rates up to 100V/µs without generating spurious reset pulses. This specification is validated per the Electrical Characteristics table and confirmed in Figure 3 of the datasheet, which plots maximum allowable negative-going transient duration versus reset-comparator overdrive. A 0.1µF ceramic capacitor placed close to the VCC pin further enhances immunity.
MAX6806UR26 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
MAX6806UR26 FAQ
1.How can I place an order for MAX6806UR26 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806UR26 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 MAX6806UR26 reliable?
The price and inventory of MAX6806UR26 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806UR26 is usually 5 days.
3.What payment methods are accepted for MAX6806UR26?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806UR26 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806UR26?
MAX6806UR26 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806UR26 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 MAX6806UR26?
For technical support, including MAX6806UR26 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806UR26 requirements.
6.How does Aetrix verify that MAX6806UR26 is sourced from the original manufacturer or authorized distributors?
All MAX6806UR26 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 MAX6806UR26 meets industry standards.
7.What is the process for return or replacement of MAX6806UR26?
All MAX6806UR26 units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806UR26, 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 MAX6806UR26 part is unused and in its original packaging.
Return procedure for MAX6806UR26:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6806UR26 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
