ADM803TAKSZ

监控电路 5V CMOS MPU IC Low Open Drain Out

Microprocessor Supervisory Circuits  in 3-Lead SC70 and SOT-23

FEATURES ADM803TAKSZ

Specified over temperature

Low power consumption: 17 μA

Precision voltage monitor: 2.5 V, 3 V, 3.3 V, 5 V options

Reset assertion down to 1 V VCC

140 ms minimum power-on reset

Open-drain RESET output (ADM803)

Push-pull RESET output (ADM809)

Push-pull RESET output (ADM810)

SC70 and SOT-23 packages

APPLICATIONS ADM803TAKSZ

Microprocessor systems

Computers

Controllers

Intelligent instruments

GENERAL DESCRIPTION ADM803TAKSZ

The ADM803/ADM809/ADM810 supervisory circuits monitor the power supply voltage in microprocessor systems. They provide a reset output during power-up, power-down, and brownout conditions. On power-up, an internal timer holds reset asserted for 240 ms. This holds the microprocessor in a reset state until conditions have stabilized. The reset output remains operational with VCC as low as 1 V. The ADM803 and ADM809 provide an active low reset signal (RESET), whereas the ADM810 provides an active high signal (RESET) output. The ADM809 and ADM810 have push-pull outputs, whereas the ADM803 has an open-drain output, which requires an external pull-up resistor.

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