MC74AC161 Datasheet, PDF (9/12 Pages) ON Semiconductor – Synchronous Presettable Binary Counter

MC74AC161 MC74ACT161 MC74AC163 MC74ACT163
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT161
74ACT161
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 Count
Frequency
5.0 115 125
100
MHz
3-3
tPLH
tPHL
tPLH
Propagation Delay
CP to Qn (PE Input HIGH or LOW)
Propagation Delay
CP or Qn (PE Input HIGH or LOW)
Propagation Delay
CP to TC
5.0 1.5 8.0 9.5 1.5 10.5
ns
3-6
5.0 1.5 8.0 10.5 1.5 11.5
ns
3-6
5.0 2.0 11.0 11.0 1.5 12.5
ns
3-6
tPHL
Propagation Delay
CP to TC
5.0 1.5 11.0 12.5 1.5 13.5
ns
3-6
tPLH
Propagation Delay
CET to TC
5.0 1.5 7.5 8.5 1.5 10.0
ns
3-6
tPHL
Propagation Delay
CET to TC
5.0 1.5 8.0 9.5 1.5 10.5
ns
3-6
tPHL
tPHL
Propagation Delay
MR to Qn
Propagation Delay
MR to TC
5.0 1.5 8.0 10.0 1.5 11.0
ns
3-6
5.0 2.5 10.0 13.5 2.0 14.5
ns
3-6
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
AC CHARACTERISTICS (For Figures and Waveforms — See Section 3)
74ACT163
74ACT163
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 Count
Frequency
5.0 120 140
105
MHz
3-3
tPLH
tPHL
tPLH
Propagation Delay
CP to Qn (PE Input HIGH or LOW)
Propagation Delay
CP to Qn (PE Input HIGH or LOW)
Propagation Delay
CP to TC
5.0 1.5 5.5 10.0 1.5 11.0
ns
3-6
5.0 1.5 6.0 11.0 1.5 12.0
ns
3-6
5.0 2.5 7.0 11.5 2.0 13.5
ns
3-6
tPHL
Propagation Delay
CP to TC
5.0 3.0 8.0 13.5 2.0 15.0
ns
3-6
tPLH
Propagation Delay
CET to TC
5.0 2.0 5.5 9.0 1.5 10.5
ns
3-6
tPHL
Propagation Delay
CET to TC
5.0 2.0 6.0 10.0 2.0 11.0
ns
3-6
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
FACT DATA
5-9