IN74AC643
AC ELECTRICAL CHARACTERISTICS
(C
L
=50pF,Input t
r
=t
f
=3.0 ns)
V
CC*
Symbol
Parameter
V
Guaranteed Limits
25
°C
Min
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
C
IN
C
OUT
Propagation Delay, A to B or B to A
(Figure 1)
Propagation Delay, A to B or B to A
(Figure 1)
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
Propagation Delay, Direction or Output
Enable to A or B (Figure 2)
Maximum Input Capacitance
Maximum Tree-State I/O Capacitance
(Output in High-Impedance State0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
5.0
5.0
1.5
1.5
1.5
1.5
2.5
1.5
2.5
1.5
2.0
1.5
2.0
1.5
4.5
15
Max
8.5
6.5
8.5
6.5
12.5
9.5
12.5
9.5
12.0
9.0
12.0
9.5
-40°C to
85°C
Min
1.0
1.0
1.0
1.0
2.0
1.0
2.0
1.0
1.0
1.0
1.5
1.0
4.5
15
Max
9.5
7.5
9.5
7.5
13.5
10.0
13.5
10.0
12.5
10.0
13.5
10.5
ns
ns
ns
ns
ns
ns
pF
pF
Unit
Typical @25°C,V
CC
=5.0 V
C
PD
*
Power Dissipation Capacitance
45
pF
Voltage Range 3.3 V is 3.3 V
±0.3
V
Voltage Range 5.0 V is 5.0 V
±0.5
V
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Rev. 00
IKSEMICON [ IK SEMICON CO., LTD ]
