The TLC555 is a precision timing device used for
general-purpose timing applications up to 2.1 MHz. All inputs are level sensitive,
not edge-triggered inputs.
Pin numbers are for all packages
except PW and FK. RESET overrides TRIG, which overrides THRES (when CONT pin is
2/3 VDD).
The resistance of R resistors vary
with VDD and temperature. The resistors match each other very well
across VDD and temperature for a temperature-stable control-voltage
ratio.