
SN54 / 74LS298
AC WAVEFORMS
I0 I1*
1.3 V
ts(L)
CP
1.3 V
th(L)
tW(L)
tPHL
1.3 V
th(H)
ts(H)
tW(H)
tPLH
1.3 V
Q
1.3 V
1.3 V
S*
1.3 V
ts(L)
CP
1.3 V
Q
*The shaded areas indicate when the input is permitted to
*change for predictable output performance.
Figure 1
th(L) = 0
1.3 V
th(H) = 0
ts(H)
1.3 V
Q = I0
Q = I1
Figure 2
FAST AND LS TTL DATA
5-476