參數(shù)資料
型號: 935215970112
廠商: NXP SEMICONDUCTORS
元件分類: 總線收發(fā)器
英文描述: ALS SERIES, OCTAL 1-BIT DRIVER, TRUE OUTPUT, PDSO20
封裝: PLASTIC, SSOP2-20
文件頁數(shù): 11/16頁
文件大?。?/td> 180K
代理商: 935215970112
Philips Semiconductors
Product specification
74ALS573B/74ALS574A
Latch/flip-flop
1991 Feb 08
4
LOGIC DIAGRAM – 74ALS573B
VCC = Pin 20
GND = Pin 10
D0
D
E
Q
Q0
2
19
D1
D
E
Q
Q1
3
18
D2
D
E
Q
Q2
4
17
D3
D
E
Q
Q3
5
16
D4
D
E
Q
Q4
6
15
D5
D
E
Q
Q5
7
14
D6
D
E
Q
Q6
8
13
D7
D
E
Q
Q7
9
12
11
E
SC00109
1
OE
FUNCTION TABLE – 74ALS573B
INPUTS
OUTPUTS
INTERNAL
OPERATING MODE
OE
E
Dn
REGISTER
Q0 – Q7
OPERATING MODE
L
H
L
Enable and read register
L
H
Enable and read register
L
l
L
Latch and read register
L
h
H
Latch and read register
L
X
NC
Hold
H
L
X
NC
Z
Disable outputs
H
Dn
Z
Disable outputs
H = High-voltage level
h
= High state must be present one setup time before the High-to-Low enable transition
L
= Low-voltage level
l
= Low state must be present one setup time before the High-to-Low enable transition
NC= No change
X = Don’t care
Z = High impedance “off” state
↓ = High-to-Low enable transition
LOGIC DIAGRAM – 74ALS574A
VCC = Pin 20
D0
D
CP Q
Q0
2
19
D1
D
CP Q
Q1
3
18
D2
D
CP Q
Q2
4
17
D3
D
CP Q
Q3
5
16
D4
D
CP Q
Q4
6
15
D5
D
CP Q
Q5
7
14
D6
D
CP Q
Q6
8
13
D7
D
CP Q
Q7
9
12
11
OE
CP
GND = Pin 10
SC00110
1
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