MC74AC74, MC74ACT74
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4
DC CHARACTERISTICS
Symbol Parameter
V
CC
(V)
74AC 74AC
Unit Conditions
T
A
= +25°C
T
A
=
−40°C to
+85°C
Typ Guaranteed Limits
V
IH
Minimum High Level
Input Voltage
3.0 1.5 2.1 2.1 V
OUT
= 0.1 V
4.5 2.25 3.15 3.15 V or V
CC
− 0.1 V
5.5 2.75 3.85 3.85
V
IL
Maximum Low Level
Input Voltage
3.0 1.5 0.9 0.9 V
OUT
= 0.1 V
4.5 2.25 1.35 1.35 V or V
CC
− 0.1 V
5.5 2.75 1.65 1.65
V
OH
Minimum High Level
Output Voltage
3.0 2.99 2.9 2.9
I
OUT
= −50 mA
4.5 4.49 4.4 4.4 V
5.5 5.49 5.4 5.4
V
*V
IN
= V
IL
or V
IH
3.0 − 2.56 2.46 −12 mA
4.5 − 3.86 3.76 I
OH
−24 mA
5.5 − 4.86 4.76 −24 mA
V
OL
Maximum Low Level
Output Voltage
3.0 0.002 0.1 0.1
I
OUT
= 50 mA
4.5 0.001 0.1 0.1 V
5.5 0.001 0.1 0.1
V
*V
IN
= V
IL
or V
IH
3.0 − 0.36 0.44 12 mA
4.5 − 0.36 0.44 I
OL
24 mA
5.5 − 0.36 0.44 24 mA
I
IN
Maximum Input
Leakage Current
5.5 − ±0.1 ±1.0
mA
V
I
= V
CC
, GND
I
OLD
†Minimum Dynamic
Output Current
5.5 − − 75 mA V
OLD
= 1.65 V Max
I
OHD
5.5 − − −75 mA V
OHD
= 3.85 V Min
I
CC
Maximum Quiescent
Supply Current
5.5 − 4.0 40
mA
V
IN
= V
CC
or GND
*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
Symbol Parameter
V
CC
*
(V)
74AC 74AC
Unit
Fig.
No.
T
A
= +25°C
C
L
= 50 pF
T
A
= −40°C
to +85°C
C
L
= 50 pF
Min Typ Max Min Max
f
max
Maximum Clock
Frequency
3.3 100 125 − 95 −
MHz 3−3
5.0 140 160 − 125 −
t
PLH
Propagation Delay
C
Dn
or S
Dn
to Q
n
or Q
n
3.3 5.0 8.0 12.5 4.0 13.0
ns 3−6
5.0 3.5 6.0 9.0 3.0 10.0
t
PHL
Propagation Delay
C
Dn
or S
Dn
to Q
n
or Q
n
3.3 4.0 10.5 12.0 3.5 13.5
ns 3−6
5.0 3.0 8.0 9.5 2.5 10.5
t
PLH
Propagation Delay
C
Pn
to Q
n
or Q
n
3.3 4.5 8.0 13.5 4.0 16.0
ns 3−6
5.0 3.5 6.0 10.0 3.0 10.5
t
PHL
Propagation Delay
C
Pn
to Q
n
or Q
n
3.3 3.5 8.0 14.0 3.5 14.5
ns 3−6
5.0 2.5 6.0 10.0 2.5 10.5
*Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
