參數(shù)資料
型號: 74VHCT573ASJX
廠商: Fairchild Semiconductor
文件頁數(shù): 2/9頁
文件大?。?/td> 0K
描述: IC LATCH OCTAL D 3STATE 20SOP
標(biāo)準(zhǔn)包裝: 2,000
系列: 74VHCT
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: 4.5 V ~ 5.5 V
獨(dú)立電路: 1
延遲時(shí)間 - 傳輸: 5.1ns
輸出電流高,低: 8mA,8mA
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC
包裝: 帶卷 (TR)
74VHCT573A
Octal
D-T
ype
Latc
h
with
3-ST
A
TE
Outputs
1997 Fairchild Semiconductor Corporation
www.fairchildsemi.com
74VHCT573A Rev. 1.3
2
Logic Symbol
IEEE/IEC
Truth Table
H
= HIGH Voltage Level
L
= LOW Voltage Level
X
= Immaterial
Z
= High Impedance
Functional Description
The VHCT573A contains eight D-type latches with
3-STATE output buffers. 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 buffers are
controlled by the Output Enable (OE) input. When OE is
LOW, the buffers are enabled. When OE is HIGH the
buffers are in the high impedance mode, but, this does
not interfere 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.
Inputs
Outputs
OE
LE
D
On
LH
H
LHL
L
LL
X
O0
HX
X
Z
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