SN54-74LS192 ONSEMI [ON Semiconductor], SN54-74LS192 Datasheet - Page 7

• Manufacturer Part Number: SN54-74LS192
• Description: PRESETTABLE BCD/DECADE UP/DOWN COUNTER PRESETTABLE 4-BIT BINARY UP/DOWN COUNTER
• Manufacturer: ONSEMI [ON Semiconductor]

* The shaded areas indicate when the input is permitted
*
P n
PL
Q n
to change for predictable output performance
CP U or CP D
TC U or TC D
PL
Q n
P n
t s(H)
Q = P
1.3 V
t PLH
t w
1.3 V
1.3 V
Figure 2
Figure 4
Figure 6
1.3 V
1.3 V
t h(H)
t PHL
CP U or CP D
t s(L)
SN54/74LS192 SN54/74LS193
Q = P
1.3 V
t PHL
1.3 V
Q
1.3 V
t PLH
t h(L)
FAST AND LS TTL DATA
1.3 V
AC WAVEFORMS
Figure 1
5-7
1.3 V
t PHL
CP U or CP D
CP U or CP D
t W
PL
MR
t PLH
Q
Q n
P n
Q
1.3 V
NOTE: PL = LOW
1.3 V
1.3 V
t PHL
t PHL
Figure 3
Figure 5
Figure 7
1.3 V
t W
t W
t PHL
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
1.3 V
t rec
t rec
t PLH