MC74AC14 MC74ACT14
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
74AC
Symbol
Parameter
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Typ Max Min Max
tPLH
Propagation Delay
3.3 1.5 9.5 13.5 1.5 15.0
ns
3-5
5.0 1.5 7.0 10.0 1.5 11.0
tPHL
Propagation Delay
3.3 1.5 7.5 11.5 1.5 13.0
ns
3-5
5.0 1.5 6.0 8.5 1.5 9.5
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
INPUT CHARACTERISTICS (unless otherwise specified)
Symbol
Parameter
VCC
(V)
3.0
Vt +
Maximum Positive
Threshold
4.5
5.5
3.0
Vt -
Minimum Negative
Threshold
4.5
5.5
3.0
Vh(max)
Maximum Hysteresis
4.5
5.5
3.0
Vh(min)
Minimum Hysteresis
4.5
5.5
74AC
2.2
3.2
3.9
0.5
0.9
1.1
1.2
1.4
1.6
0.3
0.4
0.5
74ACT
Test Conditions
2.0
V TA = Worst Case
0.8
V TA = Worst Case
1.2
V TA = Worst Case
0.4
V TA = Worst Case
FACT DATA
5-3