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Analog Devices Inc./Maxim Integrated MAX6800UR26D3-T
- Part No.:
- MAX6800UR26D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6800UR26D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
MAX6800UR26D3-T from Maxim Integrated is a push/pull active-high microprocessor supervisory circuit in 3-pin SOT23 package, monitoring VCC from 2.85V to 5.0V with factory-trimmed 2.63V reset threshold and guaranteed 100ms minimum reset timeout period. It asserts RESET high during brownout and maintains valid output down to VCC = 0.7V, supporting critical power-up sequencing in portable and industrial μP systems.
For engineers reviewing the MAX6800UR26D3-T datasheet, MAX6800UR26D3-T pinout, MAX6800UR26D3-T application, or MAX6800UR26D3-T equivalent, key selection criteria include active-high push/pull output structure, 2.63V precision reset threshold, 100ms timeout, ultra-low 4µA supply current, and guaranteed operation at VCC ≥ 0.7V across –40°C to +125°C.
Technical Context
The MAX6800UR26D3-T implements a precision bandgap-based reset comparator with ±1.8% threshold accuracy at +25°C and ±3% over full temperature range, immune to fast VCC transients up to 30µs (depending on overdrive). Its internal timing circuit ensures monotonic 100ms (min) reset assertion after VCC rises above 2.63V.
This device operates without external components and requires no adjustment-its reset threshold and timeout are factory-programmed. The push/pull output drives high (VOH ≥ 0.8×VCC) when asserted and sinks low (VOL ≤ 0.4V at 1.2mA) when deasserted, enabling direct interface with CMOS inputs without pull resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.8% at +25°C; enables reliable brownout detection for 2.85V–3.3V logic rails |
| Reset Timeout Period | 100ms (min); ensures sufficient μP initialization time before release |
| Supply Current | 4µA typical at VCC = 3.0V; supports multi-year battery life in portable equipment |
| Operating Voltage Range | 0.7V to 5.5V; guarantees correct RESET state even during deep brownout |
| Output Type | Push/pull active-high RESET; eliminates need for external pullup resistor |
| Temperature Range | –40°C to +125°C; qualified for automotive under-hood and industrial control environments |
| VCC Transient Immunity | Rejects negative glitches <30µs at 100mV overdrive; prevents false resets in noisy power rails |
Pinout & Package
MAX6800UR26D3-T is housed in a RoHS-compliant 3-pin SOT23 package (outline 21-0051, land pattern 90-0179), with 1.3mm × 2.9mm footprint and 0.95mm height-ideal for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output stage; must be low-impedance connection to system ground plane |
| 2 (RESET) | Active-high push/pull reset output | Drives high (≥0.8×VCC) during reset assertion; sinks low (<0.4V @ 1.2mA) when released; directly interfaces μP reset input |
| 3 (VCC) | Power supply input | Monitored rail input; accepts 0.7V–5.5V; powers internal circuitry and defines VOH level |
Key Features
| Feature | Design Value |
|---|---|
| Precision factory-trimmed threshold | 2.63V with ±1.8% tolerance at +25°C ensures accurate 2.85V system monitoring without calibration |
| Guaranteed operation down to 0.7V VCC | Maintains valid RESET output state during deep brownout-critical for fail-safe shutdown sequencing |
| No external components required | Integrates comparator, reference, timer, and driver-reduces BOM count and board area vs discrete solutions |
| 100ms minimum reset timeout | Provides ample time for flash memory initialization and PLL lock in modern μPs before release |
| Ultra-low quiescent current | 4µA typical at 3.0V enables use in always-on battery-backed systems without significant drain |
Applications
| Industrial PLC Controllers | Portable Medical Monitors |
|---|---|
|
Use Scenario: Power-up sequencing and brownout recovery in programmable logic controllers operating in harsh factory environments. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to hold CPU in reset until 3.3V rail stabilizes above 2.63V for ≥100ms. Use Value: Prevents corrupted firmware execution during unstable power conditions, meeting IEC 61000-4-11 immunity requirements. |
Use Scenario: Battery-powered ECG and pulse oximeter devices requiring long shelf life and reliable cold-start behavior. IC Role / Device Role / Timing Role: Active-high reset generator ensuring microcontroller remains held until Li-ion battery voltage exceeds 2.63V post-wake-up. Use Value: 4µA supply current extends battery runtime; 0.7V operational limit supports reset assertion even as battery discharges to endpoint. |
| Automotive Body Control Modules | Smart Energy Meters |
|
Use Scenario: Reset supervision for microcontrollers in BCMs exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Monitors 5V supply derived from vehicle battery; asserts RESET high during cranking-induced brownout (down to 6V). Use Value: ±3% threshold stability over –40°C to +125°C ensures consistent behavior across ambient extremes; transient immunity avoids spurious resets. |
Use Scenario: Tamper-resistant metering ICs requiring secure power-on initialization and fault-safe shutdown. IC Role / Device Role / Timing Role: Generates 100ms active-high reset pulse to initialize metrology ASIC and secure bootloader after AC/DC converter stabilization. Use Value: Push/pull output eliminates external pullup, reducing component count in certified meter designs; 2.63V threshold matches 3.3V LDO output margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326LTRD3-T | Same 3-pin SOT23, 2.63V threshold, 100ms timeout-but open-drain active-low output | Requires external pullup; incompatible with μP reset pins expecting active-high signal | Select only if system design accommodates active-low reset and pullup resistor |
| TLV803EB26DBZR | 2.63V threshold, 140ms timeout, push/pull active-high-but higher 8µA ICC and narrower –40°C to +85°C temp range | Limited to commercial-grade applications; insufficient for extended-temperature industrial use | Acceptable for cost-sensitive consumer designs where extended temperature is not required |
Compared with MAX6800UR26D3-T, MAX6326LTRD3-T demands layout changes due to active-low/open-drain interface, while TLV803EB26DBZR sacrifices temperature range and quiescent current efficiency-making MAX6800UR26D3-T optimal for high-reliability, low-power, extended-temperature embedded systems.
Availability
MAX6800UR26D3-T is available at Aetrix Electronics and suitable for industrial PLC controllers, portable medical monitors, automotive body control modules, and smart energy meters requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6800UR26D3-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 precision analog and mixed-signal ICs for demanding industrial, automotive, and computing applications, emphasizing reliability, integration, and low-power operation.
The MAX6800 family delivers single-function, pin-compatible μP supervisory circuits optimized for space-constrained, battery-sensitive, and high-temperature systems-replacing discrete reset solutions with guaranteed performance and zero external components.
FAQ
What is the reset output polarity and drive type of MAX6800UR26D3-T?
The MAX6800UR26D3-T features an active-high push/pull RESET output. When VCC falls below 2.63V, it drives RESET high; when VCC rises above threshold, it holds RESET high for ≥100ms before driving low. This eliminates need for external pullup resistors and simplifies interface with μP reset inputs expecting active-high signals.
Does MAX6800UR26D3-T remain functional at very low supply voltages?
Yes-MAX6800UR26D3-T is guaranteed to maintain correct RESET state down to VCC = 0.7V across –40°C to +125°C. Its internal circuitry remains operational and asserts valid high-level RESET even during deep brownout, making it suitable for battery-end-of-life detection and fail-safe shutdown.
What is the accuracy of the 2.63V reset threshold over temperature?
The MAX6800UR26D3-T reset threshold is specified as 2.63V ±1.8% at +25°C and ±3% over the full –40°C to +125°C range. This tight tolerance ensures consistent brownout detection across environmental conditions without requiring system-level calibration or margining.
Can MAX6800UR26D3-T replace MAX809 in existing designs?
MAX6800UR26D3-T is pin-compatible with MAX809 but differs in output polarity: MAX809 provides active-low reset, while MAX6800UR26D3-T is active-high. Direct replacement requires verifying μP reset pin logic compatibility; if the host μP expects active-low, a level-shifting solution or alternative part is needed.
Is MAX6800UR26D3-T suitable for automotive applications?
Yes-MAX6800UR26D3-T is rated for –40°C to +125°C and meets automotive-grade reliability requirements. Its 100ms reset timeout, 2.63V threshold, and VCC transient immunity support use in body control modules, infotainment power supervisors, and other under-hood or cabin applications where robust power monitoring is essential.
MAX6800UR26D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- 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 High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6800UR26D3-T FAQ
1.How can I place an order for MAX6800UR26D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6800UR26D3-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 MAX6800UR26D3-T reliable?
The price and inventory of MAX6800UR26D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6800UR26D3-T is usually 5 days.
3.What payment methods are accepted for MAX6800UR26D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6800UR26D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6800UR26D3-T?
MAX6800UR26D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6800UR26D3-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 MAX6800UR26D3-T?
For technical support, including MAX6800UR26D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6800UR26D3-T requirements.
6.How does Aetrix verify that MAX6800UR26D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6800UR26D3-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 MAX6800UR26D3-T meets industry standards.
7.What is the process for return or replacement of MAX6800UR26D3-T?
All MAX6800UR26D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6800UR26D3-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 MAX6800UR26D3-T part is unused and in its original packaging.
Return procedure for MAX6800UR26D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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