M54HC240 ST Microelectronics, M54HC240 Datasheet - Page 6

• Manufacturer Part Number: M54HC240
• Description: HC240: INVERTED - HC241/244 NON INVERTED OCTAL BUS BUFFER WITH 3 STATE OUTPUTS
• Manufacturer: ST Microelectronics

M54/M74HC240/241/244
AC ELECTRICAL CHARACTERISTICS (C
(*) C
(Refer to Test Circuit). Average operting current can be obtained by the following equation. I
TEST CIRCUIT I
6/12
Symbol
C
C
t
t
t
t
t
t
PD
t
t
C
TLH
THL
PLH
PHL
PZH
PHZ
PZL
PLZ
OUT
PD
IN
(*)
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
Output Transition
Time
Propagation
Delay Time
Output Enable
Time
Output Disable
Time
Input Capacitance
Output
Capacitance
Power Dissipation
Capacitance
Parameter
HC240
CC
(Opr.)
V
(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
CC
Test Conditions
(pF)
150
150
C
50
50
50
50
L
HC241/244
HC240
R
R
R
L
L
L
= 1K
= 1K
= 1K
L
= 50 pF, Input t
Min.
54HC and 74HC
T
A
Typ.
= 25
25
36
12
10
51
17
14
48
16
14
63
21
18
32
15
14
10
31
33
7
6
5
o
C
Max.
130
125
165
125
60
12
10
90
18
15
26
22
25
21
33
28
25
21
10
CC
r
(opr) = C
= t
Value
f
-40 to 85
Min.
= 6 ns)
PD
74HC
V
CC
Max.
115
165
155
205
155
75
19
13
23
20
33
28
31
26
41
35
31
26
10
o
f
C
IN
+ I
-55 to 125
CC
Min.
/8 (per circuit)
54HC
Max.
135
195
190
250
190
90
18
15
27
23
39
33
38
32
50
43
38
32
10
o
C
Unit
pF
pF
pF
ns
ns
ns
ns
ns
ns