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Home » NEWEST Products » New by Category » Semiconductors » Switch ICs » SR1 Switch ICs - STMicroelectronics
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STMicroelectronics SR1 Switch ICs

STMicroelectronics SR1 Switch ICs

STMicroelectronics SR1 switch ics provide a useful feature which ensures that inadvertent short reset push-button closures do not cause system resets. This is done by implementing an extended Smart Reset input delay time (tSRC), 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 (tSRC). The reset output (RST) is asserted after the Smart Reset input is held active for the selected tSRC delay time. The RSToutput remains asserted either until the SRinput goes to inactive logic level (i.e. neither fixed nor minimum reset pulse width is set) or the output reset pulse duration is fixed for tREC (i.e. factory-programmed). The device fully operates over a broad VCC range from 2.0V to 5.5V.


Key Features
  • Operating voltage range 2V to 5.5V
  • Low supply current 1µA
  • Integrated test mode
  • Single Smart Reset push-button input with fixed extended reset setup delay (tSRC) from 0.5s to 10s in 0.5s steps (typ.), option with internal input pull-up resistor
  • Push-button controlled reset pulse duration
    • Option 1: fully push-button controlled, no fixed or minimum pulse width guaranteed
    • Option 2: defined output reset pulse duration (tREC), factory-programmed
  • Single reset output
    • Active low or active high
    • Push-pull or open drain with optional pull-up resistor
  • Fixed Smart Reset input logic voltage levels
  • Operating temperature: -40°C to +85°C
  • UDFN6 package 1.00mm x 1.45mm
  • ECOPACK2 (RoHS compliant, Halogen-Free)

Applications
  • Wearable
  • Activity tracker
  • Smartwatch
  • Smartglasses

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