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參數(shù)資料
| 型號(hào)： | HD74LVC240A |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal Buffers / Line Drivers with 3-state Outputs(三態(tài)輸出的八緩沖器/線驅(qū)動(dòng)器) |
| 中文描述： | 八路緩沖器/線路驅(qū)動(dòng)器，三態(tài)輸出（三態(tài)輸出的八緩沖器/線驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 5/7頁(yè) |
| 文件大小： | 48K |
| 代理商： | HD74LVC240A |
HD74LVC240A
5
Switching Characteristics
Ta = –40 to 85
°
C
Item
Symbol V
CC
(V)
t
PLH
t
PHL
Min
Typ
Max Unit
From (Input)
To (Output)
Propagation delay time
2.7
—
—
7.5
ns
A
<
3.3
±
0.3
5.0
±
0.5
2.7
1.5
—
6.5
ns
—
—
5.0
ns
Output enable time
t
ZH
t
ZL
—
—
9.0
ns
*
<
3.3
±
0.3
5.0
±
0.5
2.7
1.5
—
8.0
ns
—
—
6.5
ns
Output disable time
t
HZ
t
LZ
—
—
8.0
ns
*
<
3.3
±
0.3
5.0
±
0.5
2.7
1.5
—
7.0
ns
—
—
6.0
ns
Between outut pins skew
*1
t
OSLH
t
OSHL
—
—
—
ns
3.3
±
0.3
5.0
±
0.5
2.7
—
—
1.0
ns
—
—
1.0
ns
Input capacitance
C
IN
C
O
—
3.0
—
pF
Output capacitance
Note:
1. This parameter is characterized but not tested.
tos
LH
= | t
PLHm
- t
PLHn
|, tos
HL
= | t
PHLm
- t
PHLn
|
2.7
—
15.0 —
pF
Test Circuit
V
CC
V
CC
S
1G, 2G
Input
Pulse generator
Z = 50
Output
500
C =
50 pF
450
OPEN
*1
See under table
GND
S1
50 Scope
1A1 to 2A4
1Y1 to 2Y4
Symbol
S1
t / t
t / t
t / t
PHL
OPEN
GND
6 V
HZ
LZ
OPEN
GND
2
×
Vcc
3.3
±
0.3V
Vcc=5.0
±
0.5V
Note:
1.
C
L
includes probe and jig capacitance.
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