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Analog Devices Inc./Maxim Integrated MAX811TEUS+TG05
- Part No.:
- MAX811TEUS+TG05
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX811TEUS+TG05.pdf
- Description:
- IC SUPERVISOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,990
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Product details
Overview
MAX811TEUS+TG05 from Maxim Integrated is a low-power microprocessor supervisory circuit that monitors 3.08V supply voltage, asserts an active-low reset signal for ≥140ms after power-up, and features a debounced manual reset input-used in portable battery-powered equipment, controllers, and intelligent instruments to prevent μP code execution errors during brownout or power-down.
For engineers reviewing the MAX811TEUS+TG05 datasheet, MAX811TEUS+TG05 pinout, MAX811TEUS+TG05 application, or MAX811TEUS+TG05 equivalent, key selection criteria include reset threshold accuracy (±0.03V at +25°C), guaranteed RESET validity down to VCC = 1V, 2.7µA typical supply current at 3.6V, and SOT143 package compatibility with space-constrained embedded designs.
Technical Context
The MAX811TEUS+TG05 implements a precision bandgap-based voltage comparator with internal hysteresis and a monostable timeout circuit to generate a minimum 140ms reset pulse after VCC rises above its 3.08V threshold. Its MR input includes a 20kΩ internal pull-up resistor and supports TTL/CMOS logic levels.
Reset assertion is immune to transients ≤20µs wide when VCC dips 125mV below threshold (per MAX81_T/S/R family spec), and the device guarantees valid RESET output state over full -40°C to +85°C temperature range without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V nominal, ±0.03V tolerance at +25°C - ensures reliable detection of 3.3V supply droop before system ICs fail |
| Supply Current | 2.7µA typical at 3.6V - enables multi-year operation on coin-cell batteries in portable monitoring systems |
| Reset Timeout | 140ms minimum - satisfies μP power-on reset timing requirements per Intel/Motorola specifications |
| VCC Range | 1.2V to 5.5V operating - supports valid reset assertion during deep brownout down to 1.2V |
| MR Input Threshold | 0.25 × VCC low / 0.7 × VCC high - compatible with 3.3V CMOS logic without level-shifting |
| Reset Propagation Delay | 0.5µs max from MR deassertion - ensures deterministic reset release timing in real-time control loops |
| Tempco | 30ppm/°C - maintains <±1.5% threshold drift across -40°C to +85°C industrial temperature range |
Pinout & Package
The MAX811TEUS+TG05 is housed in a 4-pin SOT143 package (package code U4+1, outline 21-0052), measuring 2.9mm × 1.6mm × 1.1mm, with GND and VCC on opposing corners for optimal noise immunity in compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for all internal comparators and reset timer - must connect to low-impedance system ground plane |
| 2 | RESET | Active-low open-drain reset output - sinks up to 1.2mA at VCC = VTH(MIN); requires external pull-up for μP interface |
| 3 | MR | Manual reset input with 20kΩ internal pull-up - driven low by momentary switch or logic to initiate controlled system reset |
| 4 | VCC | Primary supply input - powers internal circuitry and serves as reference for reset threshold detection |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 3.08V threshold monitor | Eliminates external resistor divider and reference IC, reducing BOM count and layout area in 3.3V systems |
| Guaranteed RESET validity to VCC = 1V | Ensures deterministic reset state during deep undervoltage conditions where μP may still retain register contents |
| 20kΩ internal MR pull-up | Removes need for external pull-up resistor, simplifying manual reset implementation with momentary switches |
| 140ms min reset timeout | Meets JEDEC JESD8-12B requirement for minimum reset pulse width in embedded microcontroller applications |
| Transient immunity (≤20µs @ 125mV dip) | Prevents false resets from ESD-induced supply glitches or switching noise in motor-control or industrial I/O modules |
Applications
| Industrial Controllers | Portable Medical Monitors |
|---|---|
Use Scenario: PLC I/O modules powered from 3.3V DC-DC converters subject to load transients during relay actuation. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM Cortex-M4 μP during 3.3V rail collapse. Use Value: Prevents firmware lockup by guaranteeing ≥140ms reset hold time after 3.08V threshold breach, even under -40°C cold-start conditions. | Use Scenario: Battery-powered ECG recorder using coin-cell supply with gradual voltage decay over weeks of operation. IC Role / Device Role / Timing Role: Voltage monitor detecting end-of-life battery drop below 3.08V to trigger graceful shutdown sequence. Use Value: 2.7µA supply current extends usable battery life by >20% versus discrete supervisor solutions, while 30ppm/°C tempco ensures accuracy across body-worn temperature ranges. |
| Smart Energy Meters | Automated Test Equipment |
Use Scenario: Revenue-grade meter with isolated 3.3V auxiliary supply powering metrology SoC and communication interface. IC Role / Device Role / Timing Role: Brownout detector initiating secure boot reinitialization when AC line sag causes 3.3V rail dip. Use Value: Immunity to ≤20µs transients prevents nuisance resets during switching events, while MR pin allows factory calibration reset via test fixture. | Use Scenario: Benchtop DMM with FPGA-based digital subsystem requiring synchronized reset upon power application. IC Role / Device Role / Timing Role: Power-on supervisor generating precise 140ms reset pulse aligned to 3.3V rail stabilization. Use Value: Eliminates need for RC timing network, improving production test yield and reducing calibration drift over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G30DBVR | 3.0V fixed threshold, 350ms reset timeout, 1.4µA supply current, SOT23-5 package | Longer reset pulse and lower quiescent current, but requires 5-pin layout and lacks MR input | Select when extended reset duration improves system reliability and manual reset is unnecessary |
| ADM6710L30ARJZ-R7 | 3.0V threshold, 200ms timeout, 1.5µA supply current, 4-pin SOT-143, no MR input | Same footprint and supply current advantage, but no manual reset capability limits field serviceability | Choose for cost-sensitive portable designs where MR functionality is omitted to reduce component count |
Compared with TPS3808G30DBVR and ADM6710L30ARJZ-R7, the MAX811TEUS+TG05 uniquely combines 3.08V precision threshold, integrated MR input, and SOT143 footprint-enabling compact, serviceable, and thermally stable supervision in battery-critical applications without layout redesign.
Availability
MAX811TEUS+TG05 is available at Aetrix Electronics and suitable for industrial controllers, portable medical monitors, smart energy meters, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX811TEUS+TG05 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 industrial, automotive, and communications markets, with emphasis on power management and sensor interface solutions.
The MAX811/MAX812 product line delivers ultra-low-power, single-function voltage supervisors optimized for space-constrained μP systems requiring guaranteed reset timing and manual reset capability without external components.
FAQ
What is the exact reset threshold voltage of the MAX811TEUS+TG05?
The MAX811TEUS+TG05 has a nominal reset threshold voltage of 3.08V, with a guaranteed range of 3.00V to 3.15V over the full -40°C to +85°C operating temperature range. This threshold is factory-trimmed and specified in the Electrical Characteristics table under "MAX81_T" variant, matching the "T" suffix in the part number. The device uses a precision bandgap reference to maintain ±0.03V accuracy at +25°C.
Does the MAX811TEUS+TG05 provide manual reset functionality?
Yes, the MAX811TEUS+TG05 includes a dedicated manual reset input (MR) on Pin 3. A logic-low signal on MR asserts the active-low RESET output for the duration of the low pulse plus a guaranteed 140ms timeout period after MR returns high. An internal 20kΩ pull-up resistor allows MR to be left unconnected if unused, and the input accepts standard 3.3V CMOS logic levels without external biasing.
What is the supply current consumption of the MAX811TEUS+TG05 at 3.6V?
The MAX811TEUS+TG05 draws 2.7µA typical supply current at VCC = 3.6V and TA = +25°C, with a maximum of 10µA over the full -40°C to +85°C temperature range. This ultra-low quiescent current is confirmed in the Electrical Characteristics table under "MAX81_R/S/T" conditions and makes the MAX811TEUS+TG05 suitable for multi-year battery operation in portable instrumentation.
Is the MAX811TEUS+TG05 compatible with 3.3V microprocessors?
Yes, the MAX811TEUS+TG05 is specifically designed for 3.3V systems: its 3.08V reset threshold provides appropriate margin above the 3.3V ±5% regulation limit, and its MR input thresholds (0.25×VCC low / 0.7×VCC high) ensure direct compatibility with 3.3V CMOS logic. The RESET output is open-drain and requires an external pull-up to 3.3V for proper interfacing with μP reset inputs.
What package type does the MAX811TEUS+TG05 use, and is it RoHS-compliant?
The MAX811TEUS+TG05 uses a 4-pin SOT143 package (outline 21-0052, land pattern 90-0183), measuring 2.9mm × 1.6mm × 1.1mm. The "+" in the part number suffix "+TG05" explicitly denotes lead(Pb)-free, RoHS-compliant construction per Maxim Integrated's packaging standards, verified in the Ordering Information section of the datasheet.
MAX811TEUS+TG05 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX811TEUS+TG05 FAQ
1.How can I place an order for MAX811TEUS+TG05 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX811TEUS+TG05 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 MAX811TEUS+TG05 reliable?
The price and inventory of MAX811TEUS+TG05 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX811TEUS+TG05 is usually 5 days.
3.What payment methods are accepted for MAX811TEUS+TG05?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX811TEUS+TG05 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX811TEUS+TG05?
MAX811TEUS+TG05 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX811TEUS+TG05 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 MAX811TEUS+TG05?
For technical support, including MAX811TEUS+TG05 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX811TEUS+TG05 requirements.
6.How does Aetrix verify that MAX811TEUS+TG05 is sourced from the original manufacturer or authorized distributors?
All MAX811TEUS+TG05 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 MAX811TEUS+TG05 meets industry standards.
7.What is the process for return or replacement of MAX811TEUS+TG05?
All MAX811TEUS+TG05 units undergo pre-shipment inspection (PSI). If there is an issue with MAX811TEUS+TG05, 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 MAX811TEUS+TG05 part is unused and in its original packaging.
Return procedure for MAX811TEUS+TG05:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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