MC74AC244, MC74ACT244
DC CHARACTERISTICS
74AC
Symbol
Parameter
V
CC
(V)
T
A
= +25°C
Typ
V
IH
Minimum High Level Input Voltage
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
3.0
4.5
5.5
V
OL
Maximum Low Level Output Voltage
3.0
4.5
5.5
3.0
4.5
5.5
I
IN
I
OZ
Maximum Input Leakage Current
Maximum 3−State Current
5.5
5.5
1.5
2.25
2.75
1.5
2.25
2.75
2.99
4.49
5.49
−
−
−
0.002
0.001
0.001
−
−
−
−
−
74AC
T
A
=
−40°C to +85°C
Unit
Conditions
Guaranteed Limits
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.56
3.86
4.86
0.1
0.1
0.1
0.36
0.36
0.36
±0.1
±0.5
2.1
3.15
3.85
0.9
1.35
1.65
2.9
4.4
5.4
2.46
3.76
4.76
0.1
0.1
0.1
0.44
0.44
0.44
±1.0
±5.0
V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
V
OUT
= 0.1 V
or V
CC
− 0.1 V
I
OUT
= −50
mA
V
IL
Maximum Low Level Input Voltage
V
V
OH
Minimum High Level Output Voltage
V
V
*V
IN
= V
IL
or V
IH
−12 mA
I
OH
−24 mA
−24 mA
I
OUT
= 50
mA
V
V
*V
IN
= V
IL
or V
IH
12 mA
I
OL
24 mA
24 mA
V
I
= V
CC
, GND
V
I
(OE) = V
IL
, V
IH
V
I
= V
CC
, GND
V
O
= V
CC
, GND
V
OLD
= 1.65 V Max
V
OHD
= 3.85 V Min
V
IN
= V
CC
or GND
mA
mA
I
OLD
I
OHD
I
CC
†Minimum Dynamic Output Current
5.5
5.5
−
−
−
−
−
8.0
75
−75
80
mA
mA
mA
Maximum Quiescent Supply Current
5.5
*All outputs loaded; thresholds on input associated with output under test.
†Maximum test duration 2.0 ms, one output loaded at a time.
NOTE: I
IN
and I
CC
@ 3.0 V are guaranteed to be less than or equal to the respective limit @ 5.5 V V
CC
.
AC CHARACTERISTICS
(For Figures and Waveforms − See AND8277/D at www.onsemi.com)
74AC
Symbol
Parameter
V
CC
*
(V)
Min
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation Delay
Data to Output
Propagation Delay
Data to Output
Output Enable Time
Output Enable Time
Output Disable Time
Output Disable Time
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
3.3
5.0
2.0
1.5
2.0
1.5
2.0
1.5
2.5
1.5
3.0
2.5
2.5
2.0
T
A
= +25°C
C
L
= 50 pF
Typ
6.5
5.0
6.5
5.0
6.0
5.0
7.5
5.5
7.0
6.5
7.5
6.5
Max
9.0
7.0
9.0
7.0
10.5
7.0
10.0
8.0
10.0
9.0
10.5
9.0
74AC
T
A
= −40°C to +85°C
C
L
= 50 pF
Min
1.5
1.0
2.0
1.0
1.5
1.5
2.0
1.5
1.5
1.0
2.5
2.0
Max
10.0
7.5
10.0
7.5
11.0
8.0
11.0
8.5
10.5
9.5
11.5
9.5
ns
ns
ns
ns
ns
ns
3−5
3−5
3−7
3−8
3−7
3−8
Unit
Figure
No.
*Voltage Range 3.3 V is 3.3 V
±0.3
V.
*Voltage Range 5.0 V is 5.0 V
±0.5
V.
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