IN74HC244A
AC ELECTRICAL CHARACTERISTICS
(C
L
=50pF,Input t
r
=t
f
=6.0 ns)
V
CC
Symbol
Parameter
V
Guaranteed Limit
25
°C
to
-55°C
96
18
15
110
22
19
110
22
19
60
12
10
10
15
≤85°C
≤125°C
Unit
t
PLH
, t
PHL
Maximum Propagation Delay, A to YA or B to
YB (Figures 1 and 3)
Maximum Propagation Delay , Output Enable to
YA or YB (Figures 2 and 4)
Maximum Propagation Delay , Output Enable to
YA or YB (Figures 2 and 4)
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
Maximum Input Capacitance
Maximum Three-State Output Capacitance
(Output in High-Impedance State)
Power Dissipation Capacitance (Per Buffer)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
-
-
115
23
20
140
28
24
140
28
24
75
15
13
10
15
135
27
23
165
33
28
165
33
28
90
18
15
10
15
ns
t
PLZ
, t
PHZ
ns
t
PZL
, t
PZH
ns
t
TLH
, t
THL
ns
C
IN
C
OUT
pF
pF
Typical @25°C,V
CC
=5.0 V
34
pF
C
PD
Used to determine the no-load dynamic power
consumption:
P
D
=C
PD
V
CC2
f+I
CC
V
CC
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Figure 3. Test Circuit
Figure 4. Test Circuit
294
INTEGRAL [ INTEGRAL CORP. ]
