MC74AC259, MC74ACT259
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6
AC CHARACTERISTICS (For Figures and Waveforms See Section 3 of the ON Semiconductor FACT Data Book, DL138/D)
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
TA = +25°C
CL = 50 pF
TA = 40°C
to +85
°C
CL = 50 pF
Min
Typ
Max
Min
Max
tPLH
Propagation Delay
3.3
2.0
9.0
14.5
1.5
17.0
ns
35
Dn to Qn
5.0
2.0
6.5
10.0
1.5
11.5
tPHL
Propagation Delay
3.3
2.0
9.0
13.5
1.5
16.0
ns
35
Dn to Qn
5.0
2.0
6.0
9.5
1.5
11.0
tPLH
Propagation Delay
3.3
2.0
10.5
15.0
1.5
17.5
ns
36
E to Qn
5.0
2.0
7.0
10.5
1.5
12.5
tPHL
Propagation Delay
3.3
2.0
8.0
12.5
1.5
15.0
ns
36
E to Qn
5.0
2.0
7.5
9.0
1.5
11.0
tPLH
Propagation Delay
3.3
2.0
12.0
19.0
1.5
22.5
ns
36
Address to Qn
5.0
2.0
8.0
13.0
1.5
15.5
tPHL
Propagation Delay
3.3
2.0
10.0
16.0
1.5
19.0
ns
36
Address to Qn
5.0
2.0
7.0
11.0
1.5
13.0
tPHL
Propagation Delay
3.3
2.0
8.0
12.0
1.5
13.5
ns
37
MR to Q
5.0
2.0
6.0
9.0
1.5
10.0
*Voltage Range 3.3 V is 3.3 V
±0.3 V.
*Voltage Range 5.0 V is 5.0 V
±0.5 V.
AC OPERATING REQUIREMENTS
Symbol
Parameter
VCC*
(V)
74AC
Unit
Fig.
No.
TA = +25°C
CL = 50 pF
TA = 40°C to +85°C
CL = 50 pF
Typ
Guaranteed Minimum
ts
Setup Time, HIGH or LOW
3.3
3.5
4.5
ns
39
Dn to E
5.0
2.5
3.5
th
Hold Time, HIGH or LOW
3.3
2.5
ns
39
Dn to E
5.0
2.0
ts
Setup Time
3.3
7.0
9.0
ns
36
Address to E
5.0
4.0
6.0
th
Hold Time
3.3
2.0
ns
36
Address to E
5.0
2.0
tw
Minimum Pulse
3.3
6.0
6.5
ns
36
Width MR
5.0
5.5
6.0
tw
Minimum Pulse
3.3
6.5
7.0
ns
36
Width E
5.0
5.5
6.0
*Voltage Range 3.3 V is 3.3 V
±0.3 V.
*Voltage Range 5.0 V is 5.0 V
±0.5 V.