HD74ACT161 Datasheet, PDF (7/14 Pages) Hitachi Semiconductor – Synchronous Presettable Binary Counter

HD74ACT161/HD74ACT163
AC Operating Requirements: HD74ACT161
Item
Set-up time, HIGH or LOW
P_n to CP
Hold time, HIGH or LOW
P_n to CP
Setup time, HIGH or LOW
MR to CP
Symbol
t _su
Ta = +25°C
C_L = 50 pF
V_CC (V)*¹ Typ
5.0
4.0
t_h
5.0
–5.0
t _su
5.0
4.0
Hold time, HIGH or LOW
t_h
MR to CP
5.0
–5.5
Setup time, HIGH or LOW
t _su
PE to CP
5.0
4.0
Hold time, HIGH or LOW
t_h
PE to CP
5.0
–5.5
Setup time, HIGH or LOW
t _su
CEP or CET to CP
5.0
2.5
Hold time, HIGH or LOW
t_h
CEP or CET to CP
5.0
–3.0
Clock pulse width (Load)
t_w
HIGH or LOW
5.0
2.0
Clock pulse width (Count)
t_w
HIGH or LOW
5.0
2.0
MR pulse width, LOW
t_w
5.0
3.0
Recovery time MR to CP
t _rec
5.0
0
Note: 1. Voltage Range 5.0 is 5.0 V ± 0.5 V
Ta = –40°C
to +85°C
C_L = 50 pF
Guaranteed Minimum
9.5
11.5
0
0
8.5
9.5
–0.5
–0.5
8.5
9.5
–0.5
–0.5
5.5
6.5
0
0
3.0
3.5
3.0
3.5
3.0
7.5
0
0.5
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Capacitance
Item
Input capacitance
Power dissipation capacitance
Symbol
C_IN
C_PD
Typ
4.5
45.0
Unit
pF
pF
Condition
V_CC = 5.5 V
V_CC = 5.0 V
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