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Analog Devices Inc./Maxim Integrated MAX6801UR26D1+T
- Part No.:
- MAX6801UR26D1+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6801UR26D1+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,747
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Product details
Overview
MAX6801UR26D1+T from Maxim Integrated is a precision 2.63V reset supervisor IC with push/pull active-low RESET output, 1ms minimum timeout, and guaranteed operation down to VCC = 0.7V. It monitors 2.85V–5.0V power supplies in microprocessor systems, asserts reset during brownout, and holds reset for ≥1ms after VCC recovers - used in portable battery-powered controllers requiring ultra-low quiescent current.
For engineers reviewing the MAX6801UR26D1+T datasheet, MAX6801UR26D1+T pinout, MAX6801UR26D1+T application, or MAX6801UR26D1+T equivalent, key selection criteria include factory-trimmed 2.63V threshold accuracy (±1.8% at +25°C), 4µA supply current at 3V, SOT23-3 package compatibility, and push/pull drive capability supporting direct interface to μP reset inputs without external pull-up.
Technical Context
The MAX6801UR26D1+T implements a precision bandgap-based voltage comparator with hysteresis and an internal timer circuit to generate a fixed-duration active-low reset pulse. Its reset assertion logic is fully specified from -40°C to +125°C, with propagation delay under 30µs during VCC fall at 10V/ms.
It features transient-immune reset detection that ignores fast VCC glitches up to ~100µs depending on overdrive, and guarantees valid RESET/RESET states down to VCC = 0.7V - critical for reliable brownout recovery in low-voltage embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.8% at +25°C; ensures precise brownout detection before system instability |
| Reset Timeout Period | 1ms minimum; provides sufficient hold time for μP initialization and clock stabilization |
| Supply Current | 4µA typical at VCC = 3.0V; enables multi-year battery life in always-on monitoring applications |
| Operating Voltage Range | 0.7V to 5.5V; supports valid reset assertion even during deep brownout or partial power loss |
| Output Type | Push/pull active-low RESET; drives μP reset pin directly without external pull-up resistor |
| Temperature Range | -40°C to +125°C; qualified for automotive and industrial environments without derating |
| VOL (RESET asserted) | ≤0.4V at ISINK = 50µA; guarantees solid logic-low level for noise-immune reset signaling |
Pinout & Package
MAX6801UR26D1+T is housed in a RoHS-compliant 3-pin SOT23 package (outline 21-0051), with 1.3mm × 2.9mm footprint and 0.95mm height - optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Active-low push/pull reset output; sinks current when asserted, sources weakly when deasserted |
| 3 | VCC | Power supply input; powers internal circuitry and defines reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 2.63V threshold | Eliminates external resistor network and calibration; reduces BOM count and layout area |
| 1ms minimum reset timeout | Meets μP power-on reset timing requirements for ARM Cortex-M0/M3 and PIC16F families |
| 4µA supply current at 3V | Enables integration into energy-harvesting and coin-cell-powered sensor nodes |
| Valid RESET down to VCC = 0.7V | Ensures deterministic reset behavior during gradual battery discharge or cold-start conditions |
| Transient immunity up to 100µs | Rejects switching noise from DC-DC converters without false triggering |
Applications
| Portable Medical Sensors | Industrial PLC Controllers |
|---|---|
Use Scenario: Wearable ECG patch operating from single CR2032 battery with gradual voltage decay. IC Role / Device Role / Timing Role: Supervises VCC and asserts active-low RESET to MSP430FR59xx MCU when voltage drops below 2.63V. Use Value: 4µA quiescent current extends battery life beyond 2 years; 1ms timeout satisfies TI MCU's tPOR requirement. |
Use Scenario: DIN-rail mounted PLC module exposed to wide ambient temperature swings (-40°C to +85°C). IC Role / Device Role / Timing Role: Monitors 3.3V system rail and triggers hardware reset of STM32H743 during AC line sags. Use Value: Guaranteed operation to +125°C junction temperature prevents thermal shutdown-induced reset failures. |
| Automotive Body Control Modules | Smart Meter Power Monitoring |
Use Scenario: Door module powered by vehicle battery with load-dump transients and cold-crank dips. IC Role / Device Role / Timing Role: Provides brownout reset to NXP S32K144 during cranking events where VCC falls to 2.5V. Use Value: 2.63V threshold avoids nuisance resets during 2.8V dips; 30µs propagation delay ensures fast response. |
Use Scenario: Electricity meter with backup supercapacitor maintaining RTC and memory during mains outage. IC Role / Device Role / Timing Role: Detects main supply failure and initiates controlled shutdown sequence via active-low RESET signal. Use Value: Valid RESET down to 0.7V allows full use of supercapacitor energy before final cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1+T | 2.93V threshold, same 1ms timeout, identical SOT23-3 pinout and push/pull output | Higher threshold better suited for 3.3V systems; less margin for 2.85V rails | Select when system nominal VCC is ≥3.0V and tighter 2.93V trip point improves noise immunity |
| TPS3801K33DBVR | 2.93V threshold, 200ms timeout default, open-drain output requiring pull-up | Larger timeout and different output structure require schematic revision and layout change | Choose only if longer reset hold time is required and board redesign is acceptable |
Compared with MAX809TRD1+T and TPS3801K33DBVR, the MAX6801UR26D1+T offers the lowest reset threshold (2.63V) and lowest quiescent current (4µA), making it optimal for 2.85V–3.0V battery-powered systems where early brownout detection and ultra-low power are critical.
Availability
MAX6801UR26D1+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC controllers, automotive body control modules, and smart meter power monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6801UR26D1+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) designs high-performance analog and mixed-signal ICs for industrial, automotive, communications, and computing applications - emphasizing precision, reliability, and power efficiency.
The MAX6800/MAX6801/MAX6802 family delivers compact, low-power microprocessor supervisory circuits targeting space- and energy-constrained embedded systems requiring accurate, glitch-immune power monitoring.
FAQ
What is the exact reset threshold voltage for MAX6801UR26D1+T?
The MAX6801UR26D1+T has a factory-trimmed reset threshold of 2.63V, with tolerance of ±1.8% at +25°C and ±3% over the full -40°C to +125°C temperature range. This value is confirmed in Table 1 of the official datasheet and applies specifically to the "26" suffix variant. The MAX6801UR26D1+T uses this precise threshold to trigger reset before system-level instability occurs in 2.85V supply rails.
Does MAX6801UR26D1+T support operation at VCC = 0.7V?
Yes, the MAX6801UR26D1+T is guaranteed to maintain correct RESET/RESET logic states down to VCC = 0.7V, as stated in both the General Description and Absolute Maximum Ratings sections. This ensures deterministic reset assertion during deep brownout conditions - a key differentiator from alternatives like the MAX6802, which requires VCC ≥ 1.0V. The MAX6801UR26D1+T achieves this via its push/pull output architecture.
What is the reset timeout duration for MAX6801UR26D1+T?
The MAX6801UR26D1+T provides a minimum reset timeout period of 1ms, as indicated by the "D1" suffix in its part number. Electrical Characteristics specify tRP = 1ms (min), 1.5ms (typ), and 2ms (max) at +25°C. This fixed-duration pulse ensures sufficient hold time for microprocessor initialization while minimizing unnecessary system downtime - critical for real-time embedded applications using the MAX6801UR26D1+T.
Is MAX6801UR26D1+T pin-compatible with other supervisory ICs?
Yes, the MAX6801UR26D1+T is pin-compatible with the MAX809/MAX810, MAX6326/MAX6327/MAX6328, and MAX6346/MAX6347/MAX6348 families in the 3-pin SOT23 package. Pin 1 is GND, Pin 2 is RESET (active-low push/pull), and Pin 3 is VCC - matching the standard supervisor pinout. This allows drop-in replacement in existing designs without PCB modification, provided the reset threshold and timeout meet system requirements for the MAX6801UR26D1+T.
What is the supply current consumption of MAX6801UR26D1+T?
The MAX6801UR26D1+T draws only 4µA typical supply current at VCC = 3.0V and +25°C, rising to 5µA at VCC = 5.0V. This ultra-low quiescent current is verified in the Electrical Characteristics table and enables multi-year operation from primary batteries - a core design goal of the MAX6801UR26D1+T for portable and remote sensing applications where power budget is severely constrained.
MAX6801UR26D1+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6801UR26D1+T FAQ
1.How can I place an order for MAX6801UR26D1+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6801UR26D1+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 MAX6801UR26D1+T reliable?
The price and inventory of MAX6801UR26D1+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6801UR26D1+T is usually 5 days.
3.What payment methods are accepted for MAX6801UR26D1+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6801UR26D1+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6801UR26D1+T?
MAX6801UR26D1+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6801UR26D1+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 MAX6801UR26D1+T?
For technical support, including MAX6801UR26D1+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6801UR26D1+T requirements.
6.How does Aetrix verify that MAX6801UR26D1+T is sourced from the original manufacturer or authorized distributors?
All MAX6801UR26D1+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 MAX6801UR26D1+T meets industry standards.
7.What is the process for return or replacement of MAX6801UR26D1+T?
All MAX6801UR26D1+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6801UR26D1+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 MAX6801UR26D1+T part is unused and in its original packaging.
Return procedure for MAX6801UR26D1+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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