參數(shù)資料
型號(hào): HEF4724BP
廠商: NXP SEMICONDUCTORS
元件分類: 通用總線功能
英文描述: 8-bit addressable latch
中文描述: 4000/14000/40000 SERIES, LOW LEVEL TRIGGERED D LATCH, TRUE OUTPUT, PDIP16
封裝: PLASTIC, DIP-16
文件頁(yè)數(shù): 4/7頁(yè)
文件大?。?/td> 71K
代理商: HEF4724BP
January 1995
4
Philips Semiconductors
Product specification
8-bit addressable latch
HEF4724B
MSI
MODE SELECTION
FUNCTION TABLE
Notes
1.
H = HIGH state (the more positive voltage)
L = LOW state (the less positive voltage)
X = state is immaterial
O
n-1
= state before the positive transition of E
D
1
= either HIGH or LOW
E
CL
MODE
L
H
L
H
L
L
H
H
addressable latch
memory
active HIGH 8-channel demultiplexer
clear
CL
E
D
A
0
X
L
H
L
H
L
H
L
H
X
L
H
L
H
L
H
L
H
A
1
X
L
L
H
H
L
L
H
H
X
L
L
H
H
L
L
H
H
A
2
X
L
L
L
L
H
H
H
H
X
L
L
L
L
H
H
H
H
O
0
L
D
1
L
L
L
L
L
L
L
O
n-1
D
1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
1
L
L
D
1
L
L
L
L
L
L
O
n-1
O
n-1
D
1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
2
L
L
L
D
1
L
L
L
L
L
O
n-1
O
n-1
O
n-1
D
1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
3
L
L
L
L
D
1
L
L
L
L
O
n-1
O
n-1
O
n-1
O
n-1
D
1
O
n-1
O
n-1
O
n-1
O
n-1
O
4
L
L
L
L
L
D
1
L
L
L
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
D
1
O
n-1
O
n-1
O
n-1
O
5
L
L
L
L
L
L
D
1
L
L
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
D
1
O
n-1
O
n-1
O
6
L
L
L
L
L
L
L
D
1
L
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
D
1
O
n-1
O
7
L
L
L
L
L
L
L
L
D
1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
O
n-1
D
1
MODE
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
L
X
D
1
D
1
D
1
D
1
D
1
D
1
D
1
D
1
X
D
1
D
1
D
1
D
1
D
1
D
1
D
1
D
1
clear
demultiplexer;
unaddressed
latch is
cleared
memory
addressable
latch;
unaddressed
latch holds
previous
state
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