參數(shù)資料
型號： M74HC139TTR
廠商： 意法半導(dǎo)體
英文描述： DUAL 2 TO 4 DECODER/DEMULTIPLEXER
中文描述： 雙2至4譯碼器/解復(fù)用器
文件頁數(shù)： 4/9頁
文件大?。?/td> 239K
代理商： M74HC139TTR
AC ELECTRICAL CHARACTERISTICS
(C
L
= 50 pF, Input t
r
= t
f
= 6 ns)
Symbol
Parameter
Test Conditions
Value
-40 to 85
o
C
74HC
Min.
Unit
V
CC
(V)
T
A
= 25
o
C
54HC and 74HC
Min.
Typ.
30
-55 to 125
o
C
54HC
Min.
Max.
75
15
13
130
26
22
110
22
19
10
Max.
95
19
16
165
33
28
140
28
24
10
Max.
110
22
19
195
39
33
165
33
28
10
t
TLH
t
THL
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
ns
8
7
t
PLH
PHL
Propagation
Delay Time
(A, B - Y)
45
15
13
39
13
11
5
46
ns
t
PLH
t
PHL
Propagation
Delay Time
(G - Y)
ns
C
IN
Input Capacitance
Power Dissipation
Capacitance
pF
C
PD
(*)
pF
(*) C
PD
isdefined asthe value ofthe IC’sinternal equivalent capactance which is calculated from the operating current consumption without load.
(Refer to Test Circuit).Average operting current can be obtained by thefollowingequation. I
CC
(opr) = C
PD
V
CC
f
IN
+ I
CC
TEST CIRCUIT I
CC
(Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHINGCHARACTERISTICSTEST.
SWITCHING CHARACTERISTICS TEST CIR-
CUIT
M54/M74HC139
4/9
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