tc74hct540af TOSHIBA Semiconductor CORPORATION, tc74hct540af Datasheet - Page 4

• Manufacturer Part Number: tc74hct540af
• Description: Octal Bus Buffer With Ttl Input Level
• Manufacturer: TOSHIBA Semiconductor CORPORATION

AC Characteristics
Output transition time
Propagation delay
time
(TC74HCT540A)
Propagation delay
time
(TC74HCT541A)
Output enable time
Output disable time
Input capacitance
Output 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
(input: t
t
t
t
t
C
t
t
t
t
t
t
C
TLH
THL
pZH
pHZ
pLH
pHL
pLH
pHL
pZL
pLZ
OUT
PD
PD
IN
(Note) TC74HCT541A
･ V
CC
r
R
R
TC74HCT540A
･ f
= t
L
L
IN
= 1 k Ω
= 1 k Ω
f
+ I
= 6 ns)
CC
⎯
⎯
⎯
/8 (per bit)
Test Condition
⎯
⎯
CL (pF) V
150
150
150
50
50
50
50
50
4
CC
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
4.5
5.5
(V)
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
Ta = 25°C
TC74HCT540,541AP/AF
Typ.
12
17
14
14
11
19
16
18
16
23
21
18
16
10
35
31
7
6
9
5
Max
12
11
20
18
26
24
23
21
29
27
30
27
36
33
30
27
10
⎯
⎯
⎯
Ta = − 40~85°C
Min
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
⎯
2007-10-01
Max
15
14
25
23
33
30
29
27
36
33
38
35
45
41
38
35
10
⎯
⎯
⎯
Unit
pF
pF
pF
ns
ns
ns
ns
ns