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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.

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Select	Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CLP) Filter the results in the table by unit price based on your quantity.	Qty.	RoHS	ECAD Model	Type	Mounting Style	Package / Case	Threshold Voltage	Number of Inputs Monitored	Output Type	Manual Reset	Watchdog Timers	Battery Backup Switching	Reset Delay Time	Supply Voltage - Max	Minimum Operating Temperature	Maximum Operating Temperature	Series	Packaging
	Supervisory Circuits 4 pin Smart Reset SR1PAAU STMicroelectronics 1: $1.424 6.080In Stock	Mfr. Part # SR1PAAU Mouser Part # 511-SR1PAAU	STMicroelectronics	Supervisory Circuits 4 pin Smart Reset Learn More about STMicroelectronics stmicro sr1 switch ics	Datasheet	6.080In Stock	Cut Tape $1.424 $1.078 $990 $839 $800 Reel $799 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	7.5 s	5.5 V	- 40 C	+ 85 C	SR1	Reel, Cut Tape, MouseReel
	Supervisory Circuits 4 pin Smart Reset SR1LARU STMicroelectronics 1: $1.686 4.180In Stock	Mfr. Part # SR1LARU Mouser Part # 511-SR1LARU	STMicroelectronics	Supervisory Circuits 4 pin Smart Reset Learn More about STMicroelectronics stmicro sr1 switch ics	Datasheet	4.180In Stock	Cut Tape $1.686 $1.276 $1.162 $1.026 View Reel $820 $965 $927 $886 $820 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	6 s	5.5 V	- 40 C	+ 85 C	SR1	Reel, Cut Tape, MouseReel
	Supervisory Circuits 4 pin Smart Reset SR1CARU STMicroelectronics 1: $1.743 2.853In Stock	Mfr. Part # SR1CARU Mouser Part # 511-SR1CARU	STMicroelectronics	Supervisory Circuits 4 pin Smart Reset Learn More about STMicroelectronics stmicro sr1 switch ics	Datasheet	2.853In Stock	Cut Tape $1.743 $1.276 $1.151 $1.021 Reel $835 View $959 $922 $905 $824 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	1.5 s	5.5 V	- 40 C	+ 85 C	SR1	Reel, Cut Tape, MouseReel
	Supervisory Circuits 4 pin Smart Reset SR1PBBU STMicroelectronics 1: $1.743 1.394In Stock	Mfr. Part # SR1PBBU Mouser Part # 511-SR1PBBU	STMicroelectronics	Supervisory Circuits 4 pin Smart Reset Learn More about STMicroelectronics stmicro sr1 switch ics	Datasheet	1.394In Stock	Cut Tape $1.743 $1.276 $1.162 $1.025 Reel $850 View $964 $927 $918 $821 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	7.5 s	5.5 V	- 40 C	+ 85 C	SR1	Reel, Cut Tape, MouseReel
	Supervisory Circuits 4 pin Smart Reset SR1HARU STMicroelectronics 1: $1.743 4.395In Stock	Mfr. Part # SR1HARU Mouser Part # 511-SR1HARU	STMicroelectronics	Supervisory Circuits 4 pin Smart Reset	Datasheet	4.395In Stock	Cut Tape $1.743 $1.276 $1.162 $1.026 Reel $845 View $965 $927 $918 $812 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	4 s	5.5 V	- 40 C	+ 85 C	SR1	Reel, Cut Tape, MouseReel
	Supervisory Circuits 4 pin Smart Reset SR1PARU STMicroelectronics 1: $1.754 186In Stock	Mfr. Part # SR1PARU Mouser Part # 511-SR1PARU	STMicroelectronics	Supervisory Circuits 4 pin Smart Reset Learn More about STMicroelectronics stmicro sr1 switch ics	Datasheet	186In Stock	Cut Tape $1.754 $1.287 $1.162 $1.030 View Reel $859 $967 $930 $918 $859 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	7.5 s	5.5 V	- 40 C	+ 85 C	SR1	Reel, Cut Tape, MouseReel
	Supervisory Circuits CONDITIONING & INTERFACES SR1UARU STMicroelectronics 1: $1.435 2.038In Stock 3.000On Order	Mfr. Part # SR1UARU Mouser Part # 511-SR1UARU	STMicroelectronics	Supervisory Circuits CONDITIONING & INTERFACES Learn More about STMicroelectronics stmicro sr1 switch ics	Datasheet	2.038In Stock 3.000On Order	Cut Tape $1.435 $1.036 $938 $828 Reel $690 View $776 $745 $722 $652 MouseReel Available	Min.: 1 Mult.: 1 : 3.000			Voltage Supervisory	SMD/SMT	DFN-6	5.5 V	1 Input	Active Low, Open Drain	No Manual Reset	No Watchdog	No Backup	10 s	5.5 V	- 40 C	+ 85 C	SR1UARU	Reel, Cut Tape, MouseReel