사양
| 속성 | 가치 |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Obsolete |
| Type | Simple Reset/Power-On Reset |
| NumberofVoltagesMonitored | 1 |
| Voltage-Threshold | 4.63V |
| Output | Push-Pull, Totem Pole |
| Reset | Active Low |
| ResetTimeout | 140ms Minimum |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | TO-253-4, TO-253AA |
개요
Description
MAX811LEUS+T is Maxim’s MAX811 microprocessor supervisory circuit (reset generator). It monitors the supply voltage (Vcc) and asserts a reset to a microcontroller during power-up or when Vcc falls out of spec, ensuring a safe, predictable MCU start and brown-out protection. When Vcc stabilizes, the device releases the reset after a guaranteed delay, providing a clean reset waveform.
Key points:
- Vcc monitoring with a defined reset threshold and startup delay
- Push-pull reset output suitable for direct MCU reset input
- Low quiescent current; operates typically from about 2.7V to 5.5V
- Packaging suffix LEUS and +T indicate specific package/temperature range and Tape-and-Reel packaging
Common uses: embedded systems, microcontroller start-up protection, power-fail/brown-out safety circuits. For exact voltage thresholds, timing, pinout, and whether a manual reset input is available on this variant, consult the MAX811LEUS+T datasheet.
Key points:
- Vcc monitoring with a defined reset threshold and startup delay
- Push-pull reset output suitable for direct MCU reset input
- Low quiescent current; operates typically from about 2.7V to 5.5V
- Packaging suffix LEUS and +T indicate specific package/temperature range and Tape-and-Reel packaging
Common uses: embedded systems, microcontroller start-up protection, power-fail/brown-out safety circuits. For exact voltage thresholds, timing, pinout, and whether a manual reset input is available on this variant, consult the MAX811LEUS+T datasheet.
Equivalent
MAX811LEUS+T is a voltage supervisor/reset IC. Common equivalents from other vendors include:
- Analog Devices: ADM803/ADM803A
- Texas Instruments: TPS380x/TPS381x voltage supervisors
- Microchip: MCP131/MCP132/MCP134 series
These provide similar reset outputs and timing. Ensure you match the same supply range, reset polarity, and timing/threshold options, and verify pinout/package when substituting.
- Analog Devices: ADM803/ADM803A
- Texas Instruments: TPS380x/TPS381x voltage supervisors
- Microchip: MCP131/MCP132/MCP134 series
These provide similar reset outputs and timing. Ensure you match the same supply range, reset polarity, and timing/threshold options, and verify pinout/package when substituting.
Features
Features of MAX811LEUS+T (concisely):
- Microprocessor reset supervisor with Vcc monitoring and power-on reset (POR)
- Manual reset input (MR) to force reset externally
- Reset output (active-low) with a defined POR delay
- External capacitor sets the reset timing
- Wide supply range: 2.7V to 5.5V
- Low quiescent current
- Extended temperature range: -40°C to +85°C
- 8-pin LEUS package; RoHS-compliant; Tape & Reel (+T) option
Note: These are the typical features for the MAX811 family in the LEUS+T offering. For exact electrical specs (threshold, delay, current, etc.), please consult the latest datasheet.
- Microprocessor reset supervisor with Vcc monitoring and power-on reset (POR)
- Manual reset input (MR) to force reset externally
- Reset output (active-low) with a defined POR delay
- External capacitor sets the reset timing
- Wide supply range: 2.7V to 5.5V
- Low quiescent current
- Extended temperature range: -40°C to +85°C
- 8-pin LEUS package; RoHS-compliant; Tape & Reel (+T) option
Note: These are the typical features for the MAX811 family in the LEUS+T offering. For exact electrical specs (threshold, delay, current, etc.), please consult the latest datasheet.
Pinout
- Pin count: 8 pins (LEUS package, microSOP-8, Tape & Reel).
- Function: Microprocessor supervisory/reset IC with watchdog. It monitors Vcc and asserts an active-low reset output on power-up/power-down or watchdog timeout; includes a manual reset input and a watchdog input to ensure MCU operation.
- Function: Microprocessor supervisory/reset IC with watchdog. It monitors Vcc and asserts an active-low reset output on power-up/power-down or watchdog timeout; includes a manual reset input and a watchdog input to ensure MCU operation.
Manufacturer
- Manufacturer: Maxim Integrated (the MAX811 series is from Maxim; Maxim Integrated is now part of Analog Devices).
- What kind of company: A semiconductor company that designs and markets analog and mixed-signal integrated circuits (originally fabless, outsourcing fabrication).
- What kind of company: A semiconductor company that designs and markets analog and mixed-signal integrated circuits (originally fabless, outsourcing fabrication).
Application
- Power-on reset and brown-out protection for microprocessors and digital ICs (MCUs, DSPs, FPGAs, CPLDs)
- Reset supervision in embedded and battery-powered systems
- CPU wake-up/reset for data acquisition, instrumentation, and telecom equipment
- Manual reset interface for user control or watchdog-enabled designs
- Enhancing system reliability in industrial control, consumer electronics, and automotive environments
- Reset supervision in embedded and battery-powered systems
- CPU wake-up/reset for data acquisition, instrumentation, and telecom equipment
- Manual reset interface for user control or watchdog-enabled designs
- Enhancing system reliability in industrial control, consumer electronics, and automotive environments
Package
MAX811LEUS+T comes in an 8-pin SOIC (surface-mount) package. The “+T” denotes Tape‑and‑Reel packaging.
