Datasheet

SN74ALVCH16821
3.3-V 20-BIT BUS-INTERFACE FLIP-FLOP
WITH 3-STATE OUTPUTS
SCES037C – JULY 1995 – REVISED FEBRUARY 1999
3–280
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
(each 10-bit flip-flop)
INPUTS
OUTPUT
OE CLK D
Q
L ↑ H H
L ↑ LL
L H or L X Q
0
H X X Z
logic symbol
†
1Q1
2
1Q2
3
1Q3
5
1Q4
6
1Q5
8
1Q6
9
1Q7
10
1Q8
12
1Q9
13
1Q10
14
2Q1
15
2Q2
16
2Q3
17
2Q4
19
2Q5
20
2Q6
21
2Q7
23
2Q8
24
2Q9
26
2Q10
27
1OE
EN2
1
56
1CLK
1D
55
1D1
54
1D2
52
1D3
51
1D4
49
1D5
48
1D6
47
1D7
45
1D8
44
1D9
43
1D10
3D
42
2D1
41
2D2
40
2D3
38
2D4
37
2D5
36
2D6
34
2D7
33
2D8
31
2D9
30
2D10
EN4
28
29
2CLK
2OE
C1
C3
2
4
†
This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.