參數(shù)資料
型號: HD74HCT138
廠商: Hitachi,Ltd.
英文描述: 3-to-8-line Decoder/Demultiplexer
中文描述: 3至8線解碼器/解復用器
文件頁數(shù): 3/8頁
文件大小: 47K
代理商: HD74HCT138
HD74HCT138
3
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 supply
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
PHL
time
18
35
44
ns
A, B or C to output
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
TLH
t
THL
Cin
19
30
38
ns
4.5
17
30
38
ns
4.5
G
1
to output
17
30
38
ns
4.5
17
35
44
ns
4.5
G
2A
or G
2B
to output
17
30
38
ns
4.5
Output rise/fall
time
5
15
19
ns
4.5
Input capacitance
5
10
10
pF
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