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參數(shù)資料
| 型號： | HD74HCT688 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | Octal D-Type Edge Triggered Flip-Flops with 3-State Outputs 20-CDIP -55 to 125 |
| 中文描述： | 8位數(shù)值比較 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大?。?/td> | 55K |
| 代理商： | HD74HCT688 |
HD74HCT688
4
DC Characteristics
Ta = 25
°
C
Ta = –40 to
+85
°
C
Test Conditions
Item
Symbol
Min Typ Max Min
Max
Unit
V
CC
(V)
4.5 to
5.5
Input voltage
V
IH
2.0
—
—
2.0
—
V
V
IL
—
—
0.8
—
0.8
V
4.5 to
5.5
Output voltage
V
OH
4.4
—
—
4.4
—
V
4.5
Vin = V
IH
or V
IL
I
OH
= –20
μ
A
4.18 —
—
4.13
—
4.5
I
OH
= –4 mA
V
OL
—
—
0.1
—
0.1
V
4.5
Vin = V
IH
or V
IL
I
OL
= 20
μ
A
—
—
0.26 —
0.33
4.5
I
OL
= 4 mA
Input current
Iin
—
—
±
0.1 —
±
1.0
μ
A
μ
A
5.5
Vin = V
CC
or GND
Vin = V
CC
or GND, Iout = 0
μ
A
Quiescent current
I
CC
—
—
4.0
—
40
5.5
AC Characteristics
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Ta = 25
°
C
Ta = –40 to
+85
°
C
Test Conditions
Item
Symbol
Min Typ Max Min
Max
Unit
V
CC
(V)
4.5
Propagation delay t
PLH
time
—
17
42
—
53
ns
Por Q to output
t
PHL
t
PLH
t
PHL
t
TLH
t
THL
Cin
—
19
42
—
53
4.5
—
9
24
—
30
ns
4.5
Enable to output
—
12
24
—
30
4.5
Output rise/fall
time
—
5
15
—
19
ns
4.5
Input capacitance
—
5
10
—
10
pF
—
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