My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX811SEUS/GG8
- Part No.:
- MAX811SEUS/GG8
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- -
- Datasheet:
-
MAX811SEUS/GG8.pdf
- Description:
- IC SUPERVISOR
- Quantity:
- Payment:
- Shipping:
Inventory:2,292
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX811SEUS/GG8 from Maxim Integrated is an active-low microprocessor supervisory IC that monitors 3.08V supply voltage, asserts reset for ≥140ms after power-up, and features a debounced manual reset input (MR) with internal 20kΩ pull-up. It operates from 1.2V to 5.5V, draws only 2.7–10µA, and guarantees valid RESET output down to VCC = 1V - used in battery-powered controllers and portable instrumentation.
For engineers reviewing the MAX811SEUS/GG8 datasheet, MAX811SEUS/GG8 pinout, MAX811SEUS/GG8 application, or MAX811SEUS/GG8 equivalent, key selection criteria include its 3.08V reset threshold accuracy (±0.05V over –40°C to +85°C), SOT143-4 package footprint, MR-driven reset timing (10µs minimum pulse width), and guaranteed reset assertion during brownout conditions below VTH.
Technical Context
The MAX811SEUS/GG8 implements a precision bandgap-based voltage comparator with 30ppm/°C tempco to detect VCC falling below 3.08V nominal threshold, triggering an open-drain active-low RESET output. Its internal timer ensures minimum 140ms reset timeout after VCC recovery, independent of supply ramp rate.
Manual reset is initiated by pulling MR low; reset remains asserted for tRP (140–560ms) after MR returns high. The device ignores transients ≤100ns on MR and ≤20µs on VCC (for 125mV overdrive), providing immunity against noise-induced false resets in embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08V nominal (2.55–3.15V over –40°C to +85°C); ensures reliable reset before downstream logic fails at 3V ±10%. |
| Supply Current | 2.7–10µA at VCC = 3.6V; enables multi-year operation on coin-cell batteries in portable equipment. |
| Reset Timeout | 140–560ms min; satisfies μP power-on reset timing requirements per Intel/Motorola specifications. |
| MR Pulse Width | ≥10µs; supports fast mechanical switch bounce filtering without external RC network. |
| VCC Transient Immunity | Rejects ≤20µs negative glitches ≥125mV below VTH; prevents false resets in noisy industrial environments. |
| RESET Validity Range | Guaranteed low state down to VCC = 1V; maintains deterministic reset behavior during deep brownout. |
| Operating Temp | –40°C to +85°C; qualified for industrial-grade embedded control and automotive body electronics. |
Pinout & Package
MAX811SEUS/GG8 is housed in a 4-pin SOT143 (U4+1) surface-mount package measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and RoHS-compliant lead-free finish (GG8 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | Return path for all internal circuitry; must be connected to system ground plane for stable threshold reference. |
| RESET (Pin 2) | Active-low open-drain reset output | Drives μP reset pin low during fault; requires external pull-up to VCC for logic-high state when inactive. |
| MR (Pin 3) | Manual reset input | Active-low; internally pulled up to VCC via 20kΩ resistor; accepts TTL/CMOS levels or momentary switch to GND. |
| VCC (Pin 4) | Supply voltage input | Accepts 1.2–5.5V; powers internal comparator and timer; also serves as voltage monitoring source. |
Key Features
| Feature | Design Value |
|---|---|
| Pre-trimmed 3.08V threshold | Eliminates factory calibration; achieves ±0.05V tolerance over full temperature range without external components. |
| Integrated MR debounce | Removes need for external RC filter or Schmitt trigger; supports direct connection to mechanical pushbutton. |
| Low-VCC reset validity | Ensures RESET remains asserted even as VCC collapses to 1V - critical for orderly shutdown in battery-depleted states. |
| Transient-immune comparator | Rejects fast VCC dips (≤20µs, ≥125mV) common in switching regulator noise or ESD events. |
| SOT143 footprint compatibility | Enables drop-in replacement with other 4-pin supervisory ICs (e.g., MAX809, TPS3808) using same PCB land pattern. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable glucose monitor operating from CR2032 coin cell with variable discharge profile. IC Role / Device Role / Timing Role: Voltage supervisor asserting reset if battery drops below 3.08V, preventing corrupted sensor readings or flash writes. Use Value: 2.7µA quiescent current extends battery life beyond 2 years; 140ms reset pulse ensures full μC initialization before data acquisition. | Use Scenario: DIN-rail mounted analog input module exposed to 24VDC supply ripple and ESD events. IC Role / Device Role / Timing Role: Brownout detector rejecting <20µs transients while asserting reset during sustained undervoltage. Use Value: 30ppm/°C tempco maintains threshold stability across –40°C to +85°C ambient; MR pin allows field-service reset without power cycle. |
| Smart Energy Meters | Automotive Body Control Units |
Use Scenario: ANSI C12.20-compliant meter with dual-supply (3.3V MCU + 5V metrology ASIC) and cold-start requirement. IC Role / Device Role / Timing Role: Primary reset generator synchronized to 3.3V rail; MR tied to tamper-detection switch. Use Value: Guaranteed RESET low to VCC = 1V ensures deterministic reset during capacitor discharge phase; SOT143 saves space on dense meter PCB. | Use Scenario: Door module powered from vehicle battery with load-dump and jump-start transients. IC Role / Device Role / Timing Role: Supervisory guard for 3.3V domain controlling window motor drivers and LIN transceivers. Use Value: Internal 20kΩ MR pull-up eliminates discrete resistor; 140ms timeout exceeds ISO 16750-2 cold-cranking reset duration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | Same 3.08V threshold, but no manual reset (MR) input; SOT23-3 package. | Lacks field-service reset capability; unsuitable where operator-initiated reboot is required. | Select MAX809SEUR+T only if board space is constrained and MR functionality is unnecessary. |
| TPS3808G30DBVR | 3.0V threshold (±0.5%), 1.8–6.0V operation, 160ms reset timeout, no internal MR pull-up. | Requires external pull-up on MR; tighter VTH tolerance (±0.5%) but higher ICC (12µA typical). | Choose TPS3808G30DBVR when higher accuracy is prioritized over ultra-low current or integrated MR biasing. |
Compared with MAX809SEUR+T and TPS3808G30DBVR, the MAX811SEUS/GG8 uniquely combines 3.08V precision, integrated MR pull-up, and sub-10µA supply current in a 4-pin SOT143 - making it optimal for space-constrained, battery-operated systems requiring both automatic and manual reset control.
Availability
MAX811SEUS/GG8 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX811SEUS/GG8 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 computing applications, with emphasis on power management and reliability.
The MAX811SEUS/GG8 belongs to the MAX811/MAX812 family of micropower voltage supervisors - engineered specifically for robust power-on reset and brownout protection in battery-powered and noise-prone embedded systems.
FAQ
What is the exact reset threshold voltage for MAX811SEUS/GG8?
The MAX811SEUS/GG8 has a nominal reset threshold of 3.08V, with guaranteed limits of 3.00V (min) to 3.15V (max) over the full operating temperature range of –40°C to +85°C. This value is laser-trimmed at wafer test and specified in the Electrical Characteristics table under "MAX81_T" variant.
Does MAX811SEUS/GG8 require an external pull-up resistor on the RESET pin?
Yes, the MAX811SEUS/GG8 features an open-drain active-low RESET output (Pin 2), which requires an external pull-up resistor to VCC to establish a defined logic-high state when reset is inactive. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements.
Can MAX811SEUS/GG8 operate with a 1.8V supply?
No - the MAX811SEUS/GG8 is not specified for 1.8V operation. Its minimum operating VCC is 1.2V, but its 3.08V reset threshold requires a supply ≥3.08V to function as intended. For 1.8V systems, consider the MAX809 series with 1.6V or 1.8V thresholds.
What is the purpose of the MR pin on MAX811SEUS/GG8, and how is it used?
The MR (Manual Reset) pin (Pin 3) on MAX811SEUS/GG8 is an active-low input with internal 20kΩ pull-up to VCC. Driving MR low initiates a reset pulse lasting ≥140ms after MR returns high. It supports direct connection to a momentary switch to GND, eliminating need for external debounce circuitry.
Is MAX811SEUS/GG8 pin-compatible with other MAX811 variants like MAX811TEUS/GG8?
Yes - all MAX811 variants (including MAX811SEUS/GG8 and MAX811TEUS/GG8) share identical SOT143-4 pinout, electrical interface, and timing behavior. Only the reset threshold differs (3.08V vs. 2.93V); no PCB layout change is needed when substituting within the same package and temperature grade.
MAX811SEUS/GG8 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- -
- Number of Voltages Monitored:
- -
- Voltage - Threshold:
- -
- Output:
- -
- Reset:
- -
- Reset Timeout:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX811SEUS/GG8 FAQ
1.How can I place an order for MAX811SEUS/GG8 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX811SEUS/GG8 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 MAX811SEUS/GG8 reliable?
The price and inventory of MAX811SEUS/GG8 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX811SEUS/GG8 is usually 5 days.
3.What payment methods are accepted for MAX811SEUS/GG8?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX811SEUS/GG8 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX811SEUS/GG8?
MAX811SEUS/GG8 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX811SEUS/GG8 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 MAX811SEUS/GG8?
For technical support, including MAX811SEUS/GG8 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX811SEUS/GG8 requirements.
6.How does Aetrix verify that MAX811SEUS/GG8 is sourced from the original manufacturer or authorized distributors?
All MAX811SEUS/GG8 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 MAX811SEUS/GG8 meets industry standards.
7.What is the process for return or replacement of MAX811SEUS/GG8?
All MAX811SEUS/GG8 units undergo pre-shipment inspection (PSI). If there is an issue with MAX811SEUS/GG8, 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 MAX811SEUS/GG8 part is unused and in its original packaging.
Return procedure for MAX811SEUS/GG8:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX811SEUS/GG8 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…
