74ACT245M STMicroelectronics, 74ACT245M Datasheet - Page 4

• Manufacturer Part Number: 74ACT245M
• Description: OCTAL BUS TRANSCEIVER 3-STATE
• Manufacturer: STMicroelectronics

74ACT245
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
4/9
Symb ol
Symb ol
t
t
t
PLH
PZL
PZH
L
L
T
= 50 pF or equivalent (includes jigand probe capacitance)
= R
= Z
C
PD
t
t
t
t
t
t
C
C
PLH
PHL
PZH
PHZ
PZL
PLZ
, t
, t
PD
, t
IN
OUT
i/o
1
isdefined as the value of the IC’sinternal equivalent capacitance which is calculated fromthe operating current consumption without load. (Referto
PLZ
= 500 orequivalent
PHL
PHZ
of pulse generator (typically 50 )
Propagation Delay Time
Output Enable Time
Output Disable Time
Input Capacitance
I/O Capacitance
Power Dissipation
Capacitance (note 1)
Parameter
Parameter
T EST
V
5.0
5.0
5.0
V
(V)
(V)
5.0
5.0
5.0
CC
CC
(*)
(*)
(*)
Test Co nditions
T est Con ditio n
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
= 25
T yp.
= 25
T yp.
f
5.5
6.5
7.5
IN
10
23
5
r
+ I
= t
CC
o
o
/n (per circuit)
f
C
C
Valu e
Valu e
Max.
Max.
=3 ns)
10.0
10.0
8.0
SW IT CH
-40 to 85
-40 to 85
Min.
Min.
Open
Open
2V
1.5
1.5
1.5
CC
Max.
Max.
12.0
11.0
9.0
o
o
C
C
Un it
Un it
pF
pF
pF
ns
ns
ns