參數(shù)資料
型號: 74VHC373N
廠商: Fairchild Semiconductor
文件頁數(shù): 2/9頁
文件大?。?/td> 0K
描述: IC LATCH OCT D 3STATE 20DIP
標準包裝: 18
系列: 74VHC
邏輯類型: D 型透明鎖存器
電路: 8:8
輸出類型: 三態(tài)
電源電壓: 2 V ~ 5.5 V
獨立電路: 1
延遲時間 - 傳輸: 5ns
輸出電流高,低: 8mA,8mA
工作溫度: -40°C ~ 85°C
安裝類型: 通孔
封裝/外殼: 20-DIP(0.300",7.62mm)
供應(yīng)商設(shè)備封裝: 20-DIP
包裝: 管件
74VHC373
Octal
D-T
ype
Latc
h
with
3-ST
A
TE
Outputs
1993 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHC373 Rev. 1.3
2
Logic Symbol
IEEE/IEC
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
Z
= High Impedance
X
= Immaterial
O0 = Previous O0 before HIGH-to-LOW transition of
Latch Enable
Functional Description
The
VHC373
contains
eight
D-type
latches
with
3-STATE standard outputs. When the Latch Enable (LE)
input is HIGH, data on the Dn inputs enters the latches.
In this condition the latches are transparent, i.e., a latch
output will change state each time its D input changes.
When LE is LOW, the latches store the information that
was present on the D 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 inter-
fere with entering new data into the latches.
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.
Figure 1.
Inputs
Outputs
LE
OE
Dn
On
XHX
Z
HL
L
HLH
H
LL
X
O0
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