By utilizing both halves of the dual timer it is possible to obtain sequential timing. By connecting the output of the first half to the input of the second half via a 01 Âµ-F coupling capacitor, sequential timing may be obtained. Delay ti is determined by the first half and h by the second half delay. The first half of the timer is started by momentarily connecting pin 6 to ground
When it is timed out (determined by 1R1C1) the second half begins. Its time duration is determined by 1R2C2.