74ALVCH16843DL 查看數據表（PDF） - Philips Electronics
零件编号
产品描述 (功能)
生产厂家
74ALVCH16843DL Datasheet PDF : 12 Pages
| |||
Philips Semiconductors
18-bit bus interface D-type latch (3-State)
Product specification
74ALVCH16843
PIN DESCRIPTION
PIN NUMBER
SYMBOL
1
1CLR
2
1OE
55
1PRE
56
1LE
54, 52, 51, 49, 48,
47, 45, 44, 43
3, 5, 6, 8, 9,
10, 12, 13, 14
4, 11, 18, 25,
32, 39, 46, 53
7, 22, 35, 50
27
1D0 to 1D8
1Q0 to 1Q8
GND
VCC
2OE
28
2CLR
29
2LE
30
42, 41, 40, 38, 37,
36, 34, 33, 31
15, 16, 17, 19, 20,
21, 23, 24, 26
2PRE
2D0 to 2D8
2Q0 to 2Q8
NAME AND FUNCTION
Clear input (active LOW)
Output enable input (active
LOW)
Preset input (active LOW)
Latch enable input (active
HIGH)
Data inputs
Data outputs
Ground (0V)
Positive supply voltage
Output enable input (active
LOW)
Clear input (active LOW)
Latch enable input (active
HIGH)
Preset input (active LOW)
Data inputs
Data outputs
FUNCTION TABLE
INPUTS
nPRE nCLR nOE
LE
L
X
L
X
H
L
L
X
H
H
L
H
H
H
L
H
H
H
L
H
X
X
H
H
H = HIGH voltage level
L = LOW voltage level
X = Don’t care
Z = High impedance “off” state
OUTPUT
DX
Q
X
H
X
L
L
L
H
H
X
Q0
X
Z
LOGIC SYMBOL
1
55 2
56
1CLR 1PRE 1OE 1LE
3
1Q0
1D0
54
5
1Q1
1D1
52
6
1Q2
1D2
51
8
1Q3
1D3
49
9
1Q4
1D4
48
10
1Q5
1D5
47
12
1Q6
1D6
45
13
1Q7
1D7
44
14
1Q8
1D8
43
15
2Q0
16
2Q1
17
2Q2
19
2Q3
20
2Q4
21
2Q5
23
2Q6
24
2Q7
26
2Q8
2D0
42
2D1
41
2D2
40
2D3
38
2D4
37
2D5
36
2D6
34
2D7
33
2D8
31
2CLR 2PRE 2OE 2LE
28
30 27
29
SH00144
1998 Aug 04
3
Share Link: 