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<strong>ITT</strong> SAJ110<br />

FREQUENCY DIVIDER CIRCUITS<br />

f-<br />

r------<br />

------ ---<br />

-."- ---<br />

----.<br />

-.--- --<br />

----- ---.- ----<br />

-SAJIIO - _. - ----- --- - ----,<br />

r,:~o',<br />

"<br />

lmo • .=O.4tA<br />

Fig. 13-Reset circuit for a seven stage counter<br />

r;'1 H<br />

'" n n n n n .., r::1 r.1 r.-r r.;'1<br />

L--L..J L..J L..J L..J L..J ......______.Jlw2w3w4W5w6w7L_L = TRUTH TABLE<br />

"<br />

o~~------~-~ I, °1 02 03 04~ Os 07<br />

~~-"----~-~<br />

°r----L-i _____ J I _~<br />

ci ~ H<br />

1- h-----J -L<br />

°5 i H<br />

L- :: _____ J - L<br />

06 P. H<br />

L- ~ ____ J -L<br />

° 7 H<br />

L<br />

- ~ ____-1 -L<br />

____ Re_ .. _I_P_U''''_:-:1t:::'p>'~.<br />

Fig. 14-Reset action at VI1<br />

"'ow"<br />

° L L L L L L L<br />

1 H H H H H H H<br />

2 L H H H H H H<br />

3 H L H H H H H<br />

4 L L H H H H H<br />

'5 H H L H H H H<br />

6 L H L H H H H<br />

7 H L L H H H H<br />

, . H<br />

'1:lJL.J1..JUU1.JU-___ ~-L<br />

'I<br />

0,-, 1111 nt-----.., r--1 ,;..., r--1 H<br />

~ -- ~ ~n . ~ ~ ~ ~~<br />

°2---, . r---1!r------.., ~ H<br />

~ ~] ~ ~~<br />

~ :r--- H<br />

L- I, -L<br />

o I!<br />

4-----.,----,tr--------'----_~<br />

L- II<br />

or.- r----<br />

H<br />

-L<br />

Os-------lJ---·--------_~<br />

"<br />

-:f<br />

L- I'<br />

Rese' pu, •• tp"PS<br />

°I_<br />

H<br />

-L<br />

TRUTH TABLE<br />

11<br />

°<br />

1<br />

2<br />

3<br />

4<br />

5<br />

6<br />

7<br />

°1<br />

H<br />

L<br />

H<br />

L<br />

H<br />

L<br />

.H<br />

L<br />

~ °3°4 °50s°7<br />

H H H H H H<br />

H H H H H H<br />

L H H H H H<br />

L H H H H H<br />

H L H H H H<br />

H L H H H H<br />

L L'H H H H<br />

L L H H H H<br />

Fig. 15-Reset action at VI1<br />

"high"<br />

8-60

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