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.