MC74AC378 Datasheet, PDF (4/7 Pages) Motorola, Inc – PARALLEL D REGISTER WITH ENABLE

MC74AC378 MC74ACT378
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
fmax
Maximum Clock
Frequency
3.3 125
5.0 160
110
MHz
3-3
145
tPLH
Propagation Delay
CP to Qn
tPHL
Propagation Delay
CP to Qn
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
3.3 2.5
5.0 1.5
3.3 2.5
5.0 1.5
11
2.5 12.5
ns
3-6
8.0 1.5 9.0
10.5 2.5 11
ns
3-6
7.5 1.5 8.0
AC OPERATING REQUIREMENTS
Symbol
Parameter
ts
Setup Time, HIGH or LOW
Dn to CP
th
Hold Time, HIGH or LOW
Dn to CP
ts
Setup Time, HIGH or LOW
E to CP
th
Hold Time, HIGH or LOW
E to CP
tw
CP Pulse Width
HIGH or LOW
* Voltage Range 3.3 V is 3.3 V ±0.3 V.
Voltage Range 5.0 V is 5.0 V ±0.5 V.
74AC
74AC
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Typ
Guaranteed Minimum
3.3
3.0
3.5
ns
3-9
5.0
2.0
2.5
3.3
2.0
2.0
ns
3-9
5.0
2.0
2.0
3.3
2.0
2.0
ns
3-9
5.0
2.0
2.0
3.3
2.0
2.0
ns
3-9
5.0
2.0
2.0
3.3
4.5
5.5
ns
3-6
5.0
3.5
4.0
FACT DATA
5-4