74ACT240 STMicroelectronics, 74ACT240 Datasheet - Page 4

• Manufacturer Part Number: 74ACT240
• Description: OCTAL BUS BUFFER WITH 3 STATE OUTPUTS INVERTED
• Manufacturer: STMicroelectronics

74ACT240
4/8
AC ELECTRICAL CHARACTERISTICS (C
(*) Voltage range is 5V 0.5V
CAPACITIVE CHARACTERISTICS
1) C
Test Circuit). Average operating current can be obtained by the following equation. I
TEST CIRCUIT
C
R
R
Symbol
Symbol
t
t
t
PLH
PZL
PZH
L
L
T
= 50 pF or equivalent (includes jig and probe capacitance)
= R
=Z
C
t
t
C
PD
t
t
t
t
C
PZH
PHZ
PLH
PHL
PZL
PLZ
OUT
, t
, t
, t
PD
IN
1
OUT
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to
PLZ
= 500 or equivalent
PHL
PHZ
of pulse generator (typically 50 )
Propagation Delay Time
Output Enable Time
Output Disable Time
Input Capacitance
Output Capacitance
Power Dissipation
Capacitance (note 1)
Parameter
Parameter
TEST
V
5.0
5.0
5.0
V
(V)
(V)
5.0
5.0
5.0
CC
CC
(*)
(*)
(*)
Test Con dition s
T est Cond ition
L
= 50 pF, R
L
CC
= 500 , Input t
(opr) = C
Min.
Min.
PD
1.5
1.5
1.5
V
T
T
CC
A
A
Typ.
Typ.
f
= 25
= 25
IN
5.0
6.0
6.5
21
4
8
+ I
r
= t
CC
/n (per circuit)
o
o
f
C
C
Value
Value
Max.
Max.
=3 ns)
10.0
7.5
8.5
SWITCH
-40 to 85
-40 to 85
Min .
Min .
Open
Open
2V
1.5
1.5
1.5
CC
Max.
Max.
10.5
8.5
9.5
o
o
C
C
Unit
Unit
ns
ns
pF
pF
pF
ns