MC74AC161 Datasheet, PDF (11/12 Pages) ON Semiconductor – Synchronous Presettable Binary Counter

MC74AC161 MC74ACT161 MC74AC163 MC74ACT163
AC OPERATING REQUIREMENTS
Symbol
Parameter
ts
Setup Time, HIGH or LOW
Pn to CP
th
Hold Time, HIGH or LOW
Pn to CP
ts
Setup Time, HIGH or LOW
SR to CP
th
Hold Time, HIGH or LOW
SR to CP
ts
Setup Time, HIGH or LOW
PE to CP
th
Hold Time, HIGH or LOW
PE to CP
ts
Setup Time, HIGH or LOW
CEP or CET to CP
th
Hold Time, HIGH or LOW
CEP or CET to CP
tw
Clock Pulse Width
HIGH or LOW
tw
Clock Pulse Width (Count)
HIGH or LOW
* Voltage Range 5.0 V is 5.0 V ±0.5 V.
74ACT163
74ACT163
VCC*
(V)
TA = +25°C
CL = 50 pF
TA = –40°C
to +85°C
CL = 50 pF
Unit
Fig.
No.
Typ
Guaranteed Minimum
5.0 4.0
10.0
12.0
ns
3-9
5.0 –5.0
0.5
0.5
ns
3-9
5.0 4.0
10.0
11.5
ns
3-9
5.0 –5.5
–0.5
–0.5
ns
3-9
5.0 4.0
8.5
10.5
ns
3-9
5.0 –5.5
–0.5
0
ns
3-9
5.0 2.5
5.5
6.5
ns
3-9
5.0 –3.0
0
0.5
ns
3-9
5.0 2.0
3.5
3.5
ns
3-6
5.0 2.0
3.5
3.5
ns
3-6
CAPACITANCE
Symbol
Parameter
CIN
CPD
Input Capacitance
Power Dissipation Capacitance
Value
Typ
Unit
4.5
pF
45
pF
Test Conditions
VCC = 5.0 V
VCC = 5.0 V
FACT DATA
5-11