SR1PARU, Supervisory Circuits 4 pin Smart Reset

SR1 4-Pin Smart Reset™ Switch

STMicroelectronics SR1 4-Pin Smart Reset™ Switch is designed to ensure that inadvertent short reset push-button closures do not cause system resets. This is done by implementing an extended Smart Reset input delay time (t SRC ), which ensures a safe reset and eliminates the need for a specific dedicated reset button. The SR1 has one Smart Reset input (SR) with preset delayed Smart Reset setup time (t SRC ). The Reset Output (RST) is asserted after the Smart Reset input is held active for the selected t SRC delay time. The RSToutput remains asserted either until the SRinput goes to inactive logic level or the output reset pulse duration is fixed for t REC. The device fully operates over a broad V CC range from 2.0V to 5.5V.