MAX809TEUR+T

MAX809TEUR+T is the European Tape & Reel version of the MAX809 microprocessor supervisor from Maxim Integrated. The MAX809 family consists of low‑power voltage‑monitor/reset devices that supervise a system supply and generate a reset signal for a microcontroller when Vcc falls below a fixed trip threshold. It provides a defined reset window during power‑up and brown‑out, ensuring reliable MCU startup. Variants offer different trip thresholds and reset‑output polarities; some versions include a manual reset input. Key benefits: very low quiescent current, fast response to voltage changes, and no external components required for basic operation. Typical pins are Vcc, GND, and RESET (with possible MR/pin depending on variant). Applications include MCU/FPGA resets during power‑up/power‑down, brown‑out protection in embedded and battery-powered systems. The +T suffix simply indicates the Tape & Reel packaging; verify the exact threshold, polarity, and pinout for your specific MAX809TEUR+T part in the datasheet before design.

Equivalent products to MAX809TEUR+T (voltage supervisor/reset IC) include:
- TI TLV803/TLV803-Q1
- TI TPS3700/TPS3701; TPS383x
- Microchip MCP1315/MCP1316/MCP1317
- Onsemi NCP301/NCP303
- Analog Devices ADM803/ADM804
Note: pick the variant with the same reset-threshold (e.g., 2.93V, 4.63V) and the same MR/reset input requirements; packaging may differ.

Here are the key features of MAX809TEUR+T (microprocessor reset/voltage supervisor in TEUR+T packaging):
- Monitors Vcc and generates a reset signal when supply falls outside safe range (power-on and brown-out reset).
- Fixed-threshold variants available (typical options around 2.9V for 3.3V systems and ~4.6V for 5V systems).
- Reset output: active-low reset (RESET#); available in configurations with push-pull or open-drain outputs depending on variant.
- Manual reset input (MR) to force a reset externally.
- Power-on reset pulse to ensure proper MCU startup after power-up/down.
- Very low quiescent current (suitable for battery-powered/low-power apps).
- Wide supply voltage range (approximately 2.7V to 5.5V).
- Extended operating temperature: -40°C to +125°C.
- 8-pin package in TEUR+T (Tape and Reel; RoHS compliant) footprints.
Ideal for: microcontrollers, processors, memories, FPGAs where reliable reset and brown-out protection are required.

Pin count: 8 pins (SOIC/DIP). Function: MAX809TEUR+T is a microprocessor supervisory/reset circuit. It monitors Vcc and generates a reset signal for a microcontroller, ensuring proper reset during power-up/brown-out. It also provides a manual reset input to force a reset; the reset output is typically active-low.

- Manufacturer: Maxim Integrated (now part of Analog Devices, Inc.)
- What kind of company: A semiconductor company that designs and manufactures analog and mixed-signal integrated circuits, including supervisory/reset ICs like the MAX809.

MAX809TEUR+T 是低成本的电压监控与复位芯片，用于对微控制器/处理器进行上电复位和欠压保护。典型应用包括：
- 嵌入式系统的上电/低电压复位生成
- 对MCU/CPU等数字逻辑的可靠复位控制
- 电池供电设备、消费电子、汽车电子、通信设备等对供电波动敏感的场景
- 支持手动复位接口的强制复位需求

SOT-23-3 (SC-70-3) surface-mount package. The +T suffix indicates Tape & Reel packaging.