My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6801UR26D3-T
- Part No.:
- MAX6801UR26D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6801UR26D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6801UR26D3-T from Maxim Integrated is a push/pull active-low microprocessor supervisory circuit in 3-pin SOT23 package, monitoring VCC supply voltage with factory-trimmed 2.63V reset threshold and guaranteed 100ms minimum reset timeout period. It asserts RESET while VCC falls below threshold and holds it for ≥100ms after VCC recovers, operating down to 0.7V supply and consuming only 4–12µA. Used in portable battery-powered equipment requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6801UR26D3-T datasheet, MAX6801UR26D3-T pinout, MAX6801UR26D3-T application, or MAX6801UR26D3-T equivalent, key selection criteria include its 2.63V precision reset threshold, 100ms timeout, push/pull active-low output structure, ultra-low 4µA supply current at 3V, and guaranteed operation down to VCC = 0.7V across –40°C to +125°C.
Technical Context
The MAX6801UR26D3-T implements a dedicated voltage-monitoring comparator with hysteresis and internal timer logic to generate a clean, glitch-immune reset pulse. Its reset assertion is synchronized to VCC falling edge with ≤30µs propagation delay, and the timeout period is factory-programmed (not adjustable), ensuring deterministic behavior without external RC components.
It features a push/pull output stage capable of sourcing ≥500µA and sinking ≥1.2mA, delivering VOL ≤0.4V at ISINK = 1.2mA (VCC ≥ 2.5V) and VOH ≥0.8×VCC at ISOURCE = 500µA (VCC ≥ 3.0V). The device ignores fast transients on VCC-up to 100µs duration for 20mV overdrive-as verified by the Maximum Transient Duration vs. Comparator Overdrive curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.8% at +25°C; ±3% over –40°C to +125°C - ensures precise brownout detection for 2.85V–5.0V systems |
| Reset Timeout Period | 100ms (min), 150ms (typ), 200ms (max) - guarantees sufficient processor initialization time after power recovery |
| Supply Current | 4µA (typ) at VCC = +3.0V - enables multi-year battery life in always-on portable devices |
| Operating Voltage Range | 0.7V to 5.5V - supports valid RESET/RESET output state even during deep brownout or partial power loss |
| Output Type | Active-low push/pull - drives standard CMOS reset inputs directly without pull-up resistor |
| Temperature Range | –40°C to +125°C - qualified for automotive under-hood and industrial embedded environments |
| VOL / VOH | VOL ≤0.4V at ISINK = 1.2mA (VCC ≥ 2.5V); VOH ≥0.8×VCC at ISOURCE = 500µA (VCC ≥ 3.0V) - ensures robust logic-level compatibility |
Pinout & Package
MAX6801UR26D3-T is housed in a RoHS-compliant 3-pin SOT23 package (outline 21-0051, land pattern 90-0179), measuring 2.9mm × 1.6mm × 1.1mm, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output driver; must be low-impedance connection to system ground plane |
| 2 | RESET | Active-low push/pull reset output; sinks current when asserted (low), sources current when deasserted (high); no external pull-up required |
| 3 | VCC | Primary power supply input; monitored voltage source; supports operation from 0.7V to 5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±1.8% tolerance at +25°C - eliminates manual calibration and external resistor networks |
| Guaranteed reset validity to 0.7V VCC | Ensures correct RESET state during deep brownout, preventing spurious release before stable power recovery |
| Transient immunity | Rejects negative-going VCC glitches up to 100µs wide (at 20mV overdrive) - avoids false resets from switching noise or ESD |
| No external components required | Integrates voltage reference, comparator, timer, and output driver - reduces BOM count and PCB area vs. discrete solutions |
| Low quiescent current | 4µA typical at 3V - extends battery runtime in always-on IoT sensors and wearables |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
|
Use Scenario: Battery-powered glucose monitors and pulse oximeters that must retain calibration and memory integrity during intermittent power loss. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-low RESET until VCC stabilizes above 2.63V and holds it ≥100ms for MCU boot sequence. Use Value: Prevents corrupted firmware execution due to marginal VCC; 4µA supply current enables >5-year CR2032 battery life in standby mode. |
Use Scenario: DIN-rail mounted programmable logic controller modules exposed to 24V DC supply fluctuations in factory automation. IC Role / Device Role / Timing Role: Brownout detector triggering controlled shutdown and safe I/O state retention when 24V rail dips below 2.63V × (24V/5V) ≈ 12.6V (with scaling). Use Value: 100ms timeout ensures deterministic state save before power collapse; –40°C to +125°C rating supports uncooled enclosures. |
| Automotive Body Control Units | Smart Energy Meters |
|
Use Scenario: Low-voltage subsystems (e.g., door module, lighting control) powered from vehicle battery with cold-cranking dips to 6V. IC Role / Device Role / Timing Role: Reset supervisor monitoring local 3.3V LDO output, asserting RESET during cranking-induced brownout and holding ≥100ms post-recovery. Use Value: 0.7V minimum operating voltage allows continued reset assertion even as local LDO collapses; push/pull output eliminates pull-up resistor in high-reliability safety path. |
Use Scenario: Revenue-grade electricity meters requiring tamper-resistant power-fail logging and secure flash write protection. IC Role / Device Role / Timing Role: Power-fail interrupt initiator that triggers nonvolatile memory save and meter state freeze when 5V rail drops below 2.63V. Use Value: Factory-trimmed 2.63V threshold enables precise trip point matching to meter's 5V regulator dropout; 100ms timeout aligns with EEPROM write cycle timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3-T | Same 2.63V threshold and 100ms timeout, but rated only to +85°C (vs. +125°C) | Not suitable for under-hood automotive or high-temp industrial use | Select MAX809TRD3-T only for commercial-temperature consumer electronics where cost is primary constraint |
| MAX6326UT26D3-T | Identical 2.63V/100ms spec, but uses BiCMOS process with tighter ±1.5% threshold tolerance and lower 2.5µA ICC | Offers improved accuracy and longer battery life; pin-compatible drop-in replacement | Choose MAX6326UT26D3-T when higher threshold stability or sub-3µA current is required for premium portable designs |
Compared with MAX809TRD3-T, MAX6801UR26D3-T provides extended temperature range and superior transient immunity; compared with MAX6326UT26D3-T, it trades minor threshold tolerance and current savings for broader legacy design support and established qualification history.
Availability
MAX6801UR26D3-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and automotive body control units requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-aligned reliability data.
Supply support for MAX6801UR26D3-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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6800/MAX6801/MAX6802 family delivers ultra-low-power, factory-trimmed reset supervision for microprocessor-based systems where reliability, small size, and minimal external components are critical.
FAQ
What is the exact reset threshold voltage of MAX6801UR26D3-T and how tightly is it specified?
The MAX6801UR26D3-T has a factory-trimmed nominal reset threshold of 2.63V, with a tolerance of ±1.8% at +25°C and ±3% over the full –40°C to +125°C operating range. This specification is guaranteed per the Electrical Characteristics table and ensures consistent brownout detection across temperature extremes without external calibration.
Does MAX6801UR26D3-T require an external pull-up resistor on its RESET pin?
No, MAX6801UR26D3-T does not require an external pull-up resistor because it features a push/pull output stage. The RESET pin actively drives high (VOH ≥0.8×VCC) when deasserted and low (VOL ≤0.4V) when asserted, providing full rail-to-rail logic compatibility without passive components.
What is the minimum supply voltage at which MAX6801UR26D3-T guarantees correct RESET output state?
MAX6801UR26D3-T guarantees correct RESET/RESET output state down to VCC = 0.7V, as confirmed in both Absolute Maximum Ratings and Electrical Characteristics tables. This ensures reliable reset assertion during deep brownout conditions common in battery-powered systems.
How long is the reset timeout period for MAX6801UR26D3-T and is it adjustable?
The MAX6801UR26D3-T has a factory-programmed minimum reset timeout period of 100ms, with typical and maximum values of 150ms and 200ms respectively. This timeout is fixed and non-adjustable - no external capacitor or resistor is needed, simplifying design and improving timing predictability.
Is MAX6801UR26D3-T pin-compatible with other members of the MAX6800 family or legacy Maxim supervisors?
Yes, MAX6801UR26D3-T shares the same 3-pin SOT23 pinout (GND, RESET, VCC) with all MAX6800/MAX6801/MAX6802 variants and is explicitly stated as pin-compatible with MAX809/MAX810, MAX6326/MAX6327/MAX6328, and MAX6346/MAX6347/MAX6348 - enabling direct substitution in existing layouts.
MAX6801UR26D3-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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6801UR26D3-T FAQ
1.How can I place an order for MAX6801UR26D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6801UR26D3-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 MAX6801UR26D3-T reliable?
The price and inventory of MAX6801UR26D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6801UR26D3-T is usually 5 days.
3.What payment methods are accepted for MAX6801UR26D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6801UR26D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6801UR26D3-T?
MAX6801UR26D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6801UR26D3-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 MAX6801UR26D3-T?
For technical support, including MAX6801UR26D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6801UR26D3-T requirements.
6.How does Aetrix verify that MAX6801UR26D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6801UR26D3-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 MAX6801UR26D3-T meets industry standards.
7.What is the process for return or replacement of MAX6801UR26D3-T?
All MAX6801UR26D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6801UR26D3-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 MAX6801UR26D3-T part is unused and in its original packaging.
Return procedure for MAX6801UR26D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6801UR26D3-T 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…
