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參數(shù)資料
| 型號(hào)： | HD74LVC244AFPEL-E |
| 元件分類(lèi)： | 總線(xiàn)收發(fā)器 |
| 英文描述： | LVC/LCX/Z SERIES, DUAL 4-BIT DRIVER, TRUE OUTPUT, PDSO20 |
| 封裝： | SOP-20 |
| 文件頁(yè)數(shù)： | 4/7頁(yè) |
| 文件大小： | 189K |
| 代理商： | HD74LVC244AFPEL-E |
HD74LVC244A
Rev.4.00 Jul. 27, 2004 page 4 of 6
Switching Characteristics
Ta = –40 to 85°C
Typ
—
—
—
—
—
—
—
—
—
—
—
—
3.0
15.0
Item
Propagation delay time
Symbol
t
PLH
t
PHL
V
CC
(V)
2.7
3.3±0.3
5.0±0.5
2.7
3.3±0.3
5.0±0.5
2.7
3.3±0.3
5.0±0.5
2.7
3.3±0.3
5.0±0.5
2.7
2.7
Min
—
1.5
—
—
1.5
—
—
1.5
—
—
—
—
—
—
Max
7.5
6.5
5.0
9.0
8.0
6.5
8.0
7.0
6.0
—
1.0
1.0
—
—
Unit
ns
From
(Input)
A
To
(Output)
Y
Output enable time
t
ZH
t
ZL
ns
G
Y
Output disable time
t
ZH
t
LZ
ns
G
Y
Between output pins skew
*1
t
OSLH
t
OSHL
ns
Input capacitance
Output capacitance
Note:
1. This parameter is characterized but not tested.
tos
LH
= | t
PLHm
- t
PLHn
|, tos
HL
= | t
PHLm
- t
PHLn
|
C
IN
C
O
pF
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
Vcc=2.7V,
3.3±0.3V
Vcc=5.0±0.5V
Note:
1.
C
L
includes probe and jig capacitance.
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