74VHC161 Fairchild Semiconductor, 74VHC161 Datasheet - Page 3

• Manufacturer Part Number: 74VHC161
• Description: 4-Bit Binary Counter with Asynchronous Clear
• Manufacturer: Fairchild Semiconductor

Mode Select Table
H
L
X
Block Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
LOW Voltage Level
HIGH Voltage Level
Immaterial
MR
H
H
H
H
L
PE
X
H
H
H
L
CET CEP
X
X
H
X
L
X
X
H
X
L
Reset (Clear)
Load (P
Count (Increment)
No Change (Hold)
No Change (Hold)
Action on the Rising
Clock Edge (
n
Q
n
)

)
3
State Diagram
www.fairchildsemi.com