
SN54/74LS192 • SN54/74LS193
AC WAVEFORMS
CPU or CPD
Q
1.3 V
tPHL
1.3 V
Figure 1
tW
1.3 V
tPLH
1.3 V
CPU or CPD
TCU or TCD
tPHL
1.3 V
tPLH
1.3 V
Figure 2
Pn
1.3 V
tw
PL 1.3 V
tPLH
Qn
1.3 V
tPHL
Figure 4
Pn
1.3 V
1.3 V
ts(H)
PL
th(H)
1.3 V
ts(L)
th(L)
Qn
Q=P
Q=P
* The shaded areas indicate when the input is permitted
* to change for predictable output performance
Figure 6
Pn
Qn
1.3 V
tPHL
1.3 V
tPLH
NOTE: PL = LOW
Figure 3
PL
CPU or CPD
Q
tW
tPHL
1.3 V
trec
1.3 V
1.3 V
Figure 5
MR
CPU or CPD
Q
tW
tPHL
1.3 V
trec
1.3 V
1.3 V
Figure 7
FAST AND LS TTL DATA
5-357