tc74hct540af TOSHIBA Semiconductor CORPORATION, tc74hct540af Datasheet - Page 4
tc74hct540af
Manufacturer Part Number
tc74hct540af
Description
Octal Bus Buffer With Ttl Input Level
Manufacturer
TOSHIBA Semiconductor CORPORATION
Datasheet
1.TC74HCT540AF.pdf
(7 pages)
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