tc74hc251af TOSHIBA Semiconductor CORPORATION, tc74hc251af Datasheet - Page 6

• Manufacturer Part Number: tc74hc251af
• Description: 8-channel Multiplexer
• Manufacturer: TOSHIBA Semiconductor CORPORATION

AC Characteristics
Output transition time
Propagation delay
time
(D-Y)
Propagation delay
time
(D-W)
Propagation delay
time
(A, B, C-Y)
Propagation delay
time
(A, B, C-W)
3-state output enable
time
3-state output disable
time
Input capacitance
Power dissipation
capacitance
Note:
Characteristics
C
current consumption without load.
Average operating current can be obtained by the equation:
PD
I
is defined as the value of the internal equivalent capacitance which is calculated from the operating
CC
(opr) = C
Symbol
(C
t
t
t
t
C
t
t
t
t
t
t
t
t
t
t
C
TLH
THL
pZH
pHZ
pLH
pHL
pLH
pHL
pLH
pHL
pLH
pHL
pZL
pLZ
PD
PD
IN
L
(Note)
･V
= 50 pF, input: t
CC
･f
IN
+ I
CC
Test Condition
⎯
⎯
⎯
⎯
⎯
⎯
⎯
r
= t
⎯
⎯
f
= 6 ns)
6
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
(V)
CC
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Ta = 25°C
Typ.
30
65
17
14
70
18
15
80
23
19
80
23
19
40
13
10
25
13
11
69
8
7
5
Max
TC74HC251AP/AF
140
140
180
180
105
105
75
15
13
28
24
28
24
36
31
36
31
21
19
21
19
10
⎯
Ta = − 40~85°C
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
2007-10-01
Max
175
175
225
225
130
130
95
19
16
35
30
35
30
45
38
45
38
26
22
26
22
10
⎯
Unit
pF
pF
ns
ns
ns
ns
ns
ns
ns