MC74AC194 Datasheet, PDF (4/7 Pages) Motorola, Inc – 4-Bit Bidirectional Universal Shift Register

MC74AC194 MC74ACT194
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74AC
74AC
Symbol
Parameter
VCC* TA = +25°C
(V) CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Min Max Min Max
fmax
Maximum Input
Frequency
3.3 130
115
MHz
3-3
5.0 210
150
tPLH
Propagation Delay
CP to Q
3.3 2.0 14.5 1.5 16.0
ns
3-6
5.0 2.0 12.5 1.5 14.0
tPHL
Propagation Delay
CP to Q
3.3 2.0 14.5 1.5 16.0
ns
3-6
5.0 2.0 12.5 1.5 14.0
tPHL
Propagation Delay
Reset to Q
3.3 2.0 11.0 1.5 12.0
ns
3-6
5.0 2.0 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
ts
Setup Time,
Pn to Clock
th
Hold Time,
Pn to Clock
ts
Setup Time, Sn to CP
th
Hold Time,
Sn to CP
ts
Setup Time,
DSR or DSL to Clock
th
Hold Time,
DSR or DSL to Clock
tw
CP Pulse Width
tw
MR Pulse Width
trec
Recovery TIme
MR to CP
* 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
Unit
CL = 50 pF
Fig.
No.
Guaranteed Minimum
3.3
4.0
5.0
2.5
5.0
ns
3-9
3.5
3.3
3.5
5.0
2.0
3.3
5.5
5.0
4.0
4.0
ns
3-9
2.5
6.5
ns
3-9
5.0
3.3
3.5
5.0
2.0
3.3
5.5
5.0
4.0
4.0
ns
3-9
2.5
6.0
ns
3-9
4.5
3.3
1.5
5.0
2.0
3.3
5.5
5.0
4.0
2.0
ns
3-9
2.5
6.0
ns
3-6
4.5
3.3
5.5
5.0
4.0
6.0
ns
3-9
4.5
3.3
1.5
5.0
1.0
1.5
ns
3-9
1.0
FACT DATA
5-4