74ALVT16841 데이터 시트보기 (PDF) - Philips Electronics
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74ALVT16841 Datasheet PDF : 14 Pages
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Philips Semiconductors
2.5V/3.3V 20-bit bus interface latch (3-State)
Product specification
74ALVT16841
PIN DESCRIPTION
PIN NUMBER
SYMBOL
55, 54, 52, 51, 49,
48, 47, 45, 44, 43
42, 41, 40, 38, 37,
36, 34, 33, 31, 30
1D0 – 1D9
2D0 – 2D9
2, 3, 5, 6, 8, 9, 10,
12, 13, 14
15, 16, 17, 19, 20,
21, 23, 24, 26, 27
1Q0 – 1Q9
2Q0 – 2Q9
1, 28
1OE, 2OE
56, 29
4, 11, 18, 25, 32,
39, 46, 53
7, 22, 35, 50
1LE, 2LE
GND
VCC
LOGIC DIAGRAM
FUNCTION
Data inputs
Data outputs
Output enable inputs
(active-Low)
Latch enable inputs
(active rising edge)
Ground (0V)
Positive supply
voltage
FUNCTION TABLE
INPUTS
OUTPUTS
nOE nLE nDx nQ0 – nQ9
OPERATING MODE
L
H
L
L
L
H
H
H
Transparent
L
↓
l
L
L
↓
h
H
Latched
HX
X
Z
High impedance
L
H=
h=
L=
l=
↓=
NC=
X=
Z=
L
X
NC
Hold
High voltage level
High voltage level one set-up time prior to the High-to-Low LE
transition
Low voltage level
Low voltage level one set-up time prior to the High-to-Low LE
transition
High-to-Low LE transition
No change
Don’t care
High impedance “off” state
nD0
nD1
nD2
nD3
nD4
nD5
nD6
nD7
nD8
nD9
nLE
nOE
D
LQ
D
LQ
D
LQ
D
LQ
D
LQ
D
LQ
D
LQ
D
LQ
D
LQ
D
LQ
nQ0
nQ1
nQ2
nQ3
nQ4
nQ5
nQ6
nQ7
nQ8
nQ9
SH00024
1998 Feb 13
4
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