74ACT373MTCX-NL FAIRCHILD [Fairchild Semiconductor], 74ACT373MTCX-NL Datasheet - Page 2

• Manufacturer Part Number: 74ACT373MTCX-NL
• Description: Octal Transparent Latch with 3-STATE Outputs
• Manufacturer: FAIRCHILD [Fairchild Semiconductor]

www.fairchildsemi.com
Logic Symbols
Connection Diagram
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.
IEEE/IEC
2
Pin Descriptions
Truth Table
H
L
Z
X
O
Functional Description
The AC/ACT373 contains eight D-type latches with 3-
STATE standard outputs. When the Latch Enable (LE)
input is HIGH, data on the D
this condition the latches are transparent, i.e., a latch out-
put will change state each time its D-type input changes.
When LE is LOW, the latches store the information that
was present on the D-type inputs a setup time preceding
the HIGH-to-LOW transition of LE. The 3-STATE standard
outputs are controlled by the Output Enable (OE) input.
When OE is LOW, the standard outputs are in the 2-state
mode. When OE is HIGH, the standard outputs are in the
high impedance mode but this does not interfere with
entering new data into the latches.
0
D
LE
OE
O
LOW Voltage Level
High Impedance
HIGH Voltage Level
Immaterial
Previous O
0
0
–D
–O
LE
X
H
H
L
7
Pin Names
7
0
before HIGH-to-LOW transition of Latch Enable
Inputs
OE
H
L
L
L
Data Inputs
Latch Enable Input
Output Enable Input
3-STATE Latch Outputs
n
inputs enters the latches. In
D
H
X
X
L
Description
n
Outputs
O
O
H
Z
L
n
0