Logic Diagram

TLF5206 – 5

Theory of Operation

TLF5206 – 6

j

POSITIVE EDGE TRIGGER

m

POSITIVE EDGE RE-TRIGGER (PULSE LENGTHENING)

k

NEGATIVE EDGE TRIGGER

n

RESET PULSE SHORTENING

l

POSITIVE EDGE TRIGGER

o

CLEAR TRIGGER

FIGURE 1

TRIGGER OPERATION

As shown in

Figure 1 and the logic diagram before an input

trigger occurs the one shot is in the quiescent state with the

ger is recognized which turns on comparator C1 and N-

the output of comparator C1 changes state and transistor

N1 turns off Comparator C1 then turns off while at the

same time comparator C2 turns on With transistor N1 off

4