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<strong>ITT</strong>9308<br />

MSI Dual Four-Bit Latch<br />

A.C. CHARACTERISTICS<br />

9308 SWITCHING WAVEFORMS<br />

STORING A ONE<br />

E1=GND<br />

~--13-1 ___ _<br />

12 I-;::<br />

__ Q __________-JJfL5V<br />

STORING A ZERO<br />

E1=GND<br />

1.5V-/<br />

__ I 14<br />

1.5V<br />

TIME<br />

DEFINITION<br />

LIMIT (See Note 4)<br />

MIN. TYP. MAX. UNITS<br />

"I, Min. time that data X minus - ns<br />

must be present before 4<br />

t,<br />

enable to not increase h<br />

Delay from enable to<br />

output turning <strong>of</strong>f<br />

- 22 X ns<br />

I, Min. enable pulse X 15 - ns<br />

width to store a ONE<br />

I. Min. time thai data X 5 - ns<br />

must remain constant<br />

after removal <strong>of</strong> enable<br />

t, Min. lime that data<br />

must be present before<br />

X 0 - ns<br />

enable to not increase tb<br />

I. Delay from enable - 15 X ns<br />

10 oulput turning on<br />

I, Min. enable pulse X 15 ns<br />

width to slore a ZERO<br />

I, Min. lime that data X 2 - ns<br />

must remain constant<br />

after removal <strong>of</strong> enable<br />

NOTE 4: Limits indicated by X will be shown on final data sheets.<br />

Q<br />

1.5V<br />

PIN<br />

LOADING<br />

INPUTS DO, Of, 02.0 3 1.5<br />

MR, EO,El 1.0<br />

OUTPUTS °0. 0 \. 02' 03 9.0<br />

LOADING RULES<br />

All delays are measured wilh VCC=5.0V applied 10 Pin 24 and Pin 12 grounded. Theacllve inpul is driven by a 9002 TTuL gale<br />

with the output loaded with 15 pF. All outputs are loaded with 15 pF.<br />

APPLICATIONS<br />

A_....r-,<br />

B--""-./<br />

STROBE<br />

C _~_<br />

DATA<br />

O--"L_/<br />

AND-OR ENABLE SHOWING ACTIVE LEVEL<br />

LOW ENABLE GATE UTILITY<br />

9308 4 BIT LATCH 1<br />

3-329

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