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Analog Devices Inc./Maxim Integrated MAX6806UR23+T
- Part No.:
- MAX6806UR23+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX6806UR23+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,059
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Product details
Overview
MAX6806UR23+T from Maxim Integrated is a precision voltage detector IC designed for reliable power-supply monitoring in microprocessor-based systems. It features a factory-preset 2.3V ±2% reset threshold, active-low push-pull RESET output, and guaranteed operation down to VCC = 1.0V - enabling robust brownout detection in battery-powered instrumentation and portable equipment.
For engineers reviewing the MAX6806UR23+T datasheet, MAX6806UR23+T pinout, MAX6806UR23+T application, or MAX6806UR23+T equivalent, this device serves as a low-power (35µA typ), single-supply reset supervisor with precise threshold accuracy, internal hysteresis, and SOT23-3 package compatibility for space-constrained embedded designs.
Technical Context
The MAX6806UR23+T implements a bandgap-based voltage reference and comparator with built-in hysteresis (VHYST = 0.02–0.03 × VTH−) to prevent output oscillation during supply transients. Its reset assertion is triggered solely by VCC falling below 2.3V (±2% at +25°C), with no timeout delay - output transitions within 30µs of threshold crossing.
It operates across −40°C to +85°C with supply current stable from 1.0V to 5.5V VCC, and its push-pull output drives logic loads directly without external pull-up resistors. The SOT23-3 package omits manual reset (MR) functionality - that feature is exclusive to the 4-pin SOT143 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.30V ±2% (VTH− at +25°C); ensures reset asserts before system ICs drop below minimum operating voltage. |
| Supply Voltage Range | 1.0V to 5.5V; supports valid RESET output down to 1.0V VCC - critical for deep-brownout detection. |
| Supply Current | 35µA typical at VCC = 3.6V; enables multi-year battery life in portable equipment. |
| Reset Output Type | Active-low, push-pull; eliminates need for external pull-up and interfaces directly with µP reset inputs. |
| Hysteresis | 0.02–0.03 × VTH−; prevents chatter during slow-rising/falling VCC near threshold (e.g., battery discharge). |
| Operating Temperature | −40°C to +85°C; qualified for industrial and extended-temperature embedded applications. |
| Output Drive Capability | VOL ≤ 0.3V at ISINK = 20µA, VCC = 1.0V; guarantees clean logic-low under worst-case low-VCC conditions. |
Pinout & Package
MAX6806UR23+T is housed in a RoHS-compliant 3-pin SOT23 package (package code U3-1), with 0.95mm pitch, 2.9mm × 1.6mm footprint, and tape-and-reel delivery (2500 pcs minimum).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output; sinks current when VCC < 2.3V; drives µP reset input directly. |
| 2 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection. |
| 3 | VCC | Supply input; powers internal circuitry and defines reset threshold reference; accepts 1.0V–5.5V. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.3V threshold | ±2% accuracy over temperature ensures consistent reset point across −40°C to +85°C without calibration. |
| No external components | Integrates reference, comparator, hysteresis, and push-pull driver - reduces BOM count and PCB area. |
| Low 35µA quiescent current | Minimizes battery drain in always-on monitoring circuits; enables use in energy-sensitive IoT endpoints. |
| Immunity to VCC transients | Rejects negative-going spikes ≤100mV/µs (up to 100µs duration), preventing false resets in noisy environments. |
| Valid RESET to 1.0V VCC | Guarantees logic-low output even as supply collapses - essential for orderly shutdown in low-VCC systems. |
Applications
| Portable/Battery-Powered Equipment | Bar-Code Scanners |
|---|---|
|
Use Scenario: Handheld scanner powered by single-cell Li-ion (2.7–4.2V) with firmware requiring deterministic reset on battery sag. IC Role / Device Role / Timing Role: Voltage detector asserting active-low RESET when cell voltage drops below 2.3V - triggering controlled firmware halt before data corruption. Use Value: Prevents corrupted scan buffers and flash writes during brownout, extending device reliability and field service life. |
Use Scenario: Industrial barcode reader operating from 3.3V rail derived from switching regulator with load-step-induced dips. IC Role / Device Role / Timing Role: Supervisory IC monitoring 3.3V rail and asserting immediate RESET on dip below 2.3V - independent of µP clock or watchdog. Use Value: Eliminates need for µP-level software reset handling; ensures hardware-level recovery from transient supply faults. |
| Critical µP and µC Power Monitoring | Intelligent Instruments |
|
Use Scenario: Microcontroller in medical sensor node powered from regulated 2.5V rail, where undervoltage may cause ADC misreads or memory corruption. IC Role / Device Role / Timing Role: Dedicated reset supervisor providing glitch-free, hysteresis-stabilized RESET signal synchronized to VCC collapse. Use Value: Guarantees µC enters reset state before analog front-end or memory subsystem becomes unstable - meeting IEC 62304 safety requirements. |
Use Scenario: Portable multimeter with dual-supply (3.3V logic, 9V analog) and auto-ranging firmware requiring known startup state after battery insertion. IC Role / Device Role / Timing Role: Reset generator ensuring µC remains held in reset until 3.3V rail stabilizes above 2.3V - eliminating boot failures due to slow ramp. Use Value: Removes need for RC-based reset timing networks; improves first-power success rate and reduces calibration drift risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB23DBZR | 2.32V threshold, ±1% accuracy, 350nA IQ, SOT23-3; lacks hysteresis and VCC-down-to-1V guarantee. | Suitable only for ultra-low-power wake-up monitoring - not for brownout protection with fast VCC collapse. | Select TLV803EB23DBZR only if sub-µA quiescent current outweighs need for hysteresis and low-VCC reset validity. |
| TPS3808G23DBVR | 2.3V threshold, ±0.5% accuracy, 1.1µA IQ, SOT23-6; includes programmable delay and MR input - requires 6-pin layout. | Used where reset timing delay or manual reset is required - adds complexity and board area vs. MAX6806UR23+T's simplicity. | Choose TPS3808G23DBVR when design requires configurable delay or MR capability; otherwise, MAX6806UR23+T offers lower cost and smaller footprint. |
Compared with TLV803EB23DBZR and TPS3808G23DBVR, the MAX6806UR23+T delivers superior brownout resilience via guaranteed 1.0V VCC operation and built-in hysteresis - making it optimal for deterministic reset in battery-fed microcontrollers where supply collapse is rapid and uncontrolled.
Availability
MAX6806UR23+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, bar-code scanners, critical µP and µC power monitoring, and intelligent instruments requiring stable component supply and long-term industrial availability.
Supply support for MAX6806UR23+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, communications, and consumer applications.
The MAX6806 series belongs to Maxim's precision voltage supervisor product line, engineered for accurate, low-power reset generation in resource-constrained digital systems where supply integrity is mission-critical.
FAQ
What is the exact reset threshold voltage of the MAX6806UR23+T?
The MAX6806UR23+T has a factory-trimmed nominal reset threshold of 2.30V with ±2% accuracy over temperature (−40°C to +85°C). At +25°C, the guaranteed range is 2.254V to 2.346V (VTH−), and hysteresis adds ~0.046V to the rising threshold (VTH+), ensuring stable switching without chatter during supply fluctuations.
Does the MAX6806UR23+T support manual reset functionality?
No, the MAX6806UR23+T does not support manual reset. It is packaged in a 3-pin SOT23 configuration, which excludes the MR (manual reset) pin. Manual reset is only available in the 4-pin SOT143 variant (e.g., MAX6806US23-T), which integrates an internal 80kΩ pulldown resistor and accepts a logic-high pulse on the MR pin to assert reset.
Can the MAX6806UR23+T operate reliably below 1.8V supply voltage?
Yes - the MAX6806UR23+T is fully specified down to VCC = 1.0V. Its RESET output remains a valid logic-low (VOL ≤ 0.3V at 20µA sink) even at 1.0V VCC, and supply current stays within 35–60µA across 1.0V–3.6V. This makes the MAX6806UR23+T uniquely suited for single-cell Li-ion or alkaline-powered devices experiencing deep discharge.
What is the maximum transient immunity of the MAX6806UR23+T on the VCC pin?
The MAX6806UR23+T rejects negative-going VCC transients up to 100µs duration when the overdrive (VTH− − VCC) is ≤100mV, per Figure 3 in the datasheet. For example, a 50mV dip below 2.3V can last up to ~200µs without causing spurious reset - a key advantage in electrically noisy environments like motor-driven barcode scanners.
Is the MAX6806UR23+T pin-compatible with other MAX6806 variants in SOT23-3?
Yes - all MAX6806 variants in the 3-pin SOT23 package (e.g., MAX6806UR46-T, MAX6806UR26-T) share identical pinout (Pin 1: RESET, Pin 2: GND, Pin 3: VCC) and footprint. Only the reset threshold differs; electrical behavior, timing, and drive strength are consistent across the family, enabling easy threshold requalification in existing layouts.
MAX6806UR23+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:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
MAX6806UR23+T FAQ
1.How can I place an order for MAX6806UR23+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6806UR23+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 MAX6806UR23+T reliable?
The price and inventory of MAX6806UR23+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6806UR23+T is usually 5 days.
3.What payment methods are accepted for MAX6806UR23+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6806UR23+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6806UR23+T?
MAX6806UR23+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6806UR23+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 MAX6806UR23+T?
For technical support, including MAX6806UR23+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6806UR23+T requirements.
6.How does Aetrix verify that MAX6806UR23+T is sourced from the original manufacturer or authorized distributors?
All MAX6806UR23+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 MAX6806UR23+T meets industry standards.
7.What is the process for return or replacement of MAX6806UR23+T?
All MAX6806UR23+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6806UR23+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 MAX6806UR23+T part is unused and in its original packaging.
Return procedure for MAX6806UR23+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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