74lvth273 Fairchild Semiconductor, 74lvth273 Datasheet - Page 2

• Manufacturer Part Number: 74lvth273
• Description: Low Voltage Octal D-type Flip-flop With Clear
• Manufacturer: Fairchild Semiconductor

www.fairchildsemi.com
Connection Diagram
Functional Description
The LVTH273 consists of eight positive-edge-triggered flip-flops with individual D-type inputs. The buffered Clock and Clear
are common to all flip-flops. The eight flip-flops will store the state of their individual D-type inputs that meet the setup and
hold time requirements on the LOW-to-HIGH Clock (CP) transition. When the Clock is either HIGH or LOW, the D-input sig-
nal has no effect at the output. When the Clear (CLR) is LOW, all Outputs will be forced LOW.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
2
Pin Descriptions
Truth Table
H
L

X
O
o
LOW Voltage Level
HIGH Voltage Level
Immaterial
Previous O
LOW-to-HIGH Transition
D
CP
CLR
O
0
0
–D
–O
D
H
L
X
X
7
7
n
Pin Names
o
before HIGH-to-LOW of CP
Inputs
H or L
CP


X
Data Inputs
Clock Pulse Input
Clear
Outputs
CLR
H
H
H
L
Description
Outputs
O
O
H
L
L
n
o