UNISONIC TECHNOLOGIES CO.
, LTD
USA555
LINEAR INTEGRATED CIRCUIT
PRECISION TIMERS
DESCRIPTION
The UTC USA555 monolithic timing circuit is a highly stable controller capable of producing accurate time delays or oscillation.
In the time-delay or monostable mode of operation, the timed interval is controlled by a single external resistor and capacitor network.
In the astable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor.
The threshold and trigger levels normally are two-thirds and one-third, respectively, of VCC.
These levels can be altered by use of the control-
voltage terminal.
When the trigger...