74F646_04 Datasheet, PDF (4/6 Pages) Fairchild Semiconductor – Octal Transceiver/Register with 3-STATE Outputs

AC Electrical Characteristics
Symbol
Parameter
f_MAX
t_PLH
t_PHL
t_PLH
t_PHL
t_PLH
t_PHL
t_PZH
t_PZL
t_PHZ
t_PLZ
t_PZH
t_PZL
t_PHZ
t_PLZ
Maximum Clock Frequency
Propagation Delay
Clock to Bus
Propagation Delay
Bus to Bus
Propagation Delay
SBA or SAB to A or B
Enable Time
OE to A or B
Disable Time
OE to A or B
Enable Time
DIR to A or B
Disable Time
DIR to A or B
AC Operating Requirements
T_A = +25°C
V_CC = +5.0V
C_L = 50 pF
Min
Max
90
2.0
7.0
2.0
8.0
1.0
7.0
1.0
6.5
2.0
8.5
2.0
8.0
2.0
8.5
2.0
12.0
1.0
7.5
2.0
9.0
2.0
14.0
2.0
13.0
1.0
9.0
2.0
11.0
T_A = −55°C to +125°C
V_CC = +5.0V
C_L = 50 pF
Min
Max
75
2.0
8.5
2.0
9.5
1.0
8.0
1.0
8.0
2.0
11.0
2.0
10.0
2.0
10.0
2.0
13.5
1.0
9.0
2.0
11.0
2.0
16.0
2.0
15.0
1.0
10.0
2.0
12.0
T_A = 0°C to +70°C
V_CC = +5.0V
C_L = 50 pF
Min
Max
90
2.0
8.0
2.0
9.0
1.0
7.5
1.0
7.0
2.0
9.5
2.0
9.0
2.0
9.0
2.0
12.5
1.0
8.5
2.0
9.5
2.0
15.0
2.0
14.0
1.0
9.5
2.0
11.5
Symbol
Parameter
t_S(H)
t_S(L)
t_H(H)
t_H(L)
t_W(H)
t_W(L)
Setup Time, HIGH or LOW
Bus to Clock
Hold Time, HIGH or LOW
Bus to Clock
Clock Pulse Width
HIGH or LOW
T_A = +25°C
V_CC = +5.0V
Min
Max
5.0
5.0
2.0
2.0
5.0
5.0
T_A = −55°C to +125°C
V_CC = +5.0V
Min
Max
5.0
5.0
2.5
2.5
5.0
5.0
T_A = 0°C to +70°C
V_CC = +5.0V
Min
Max
5.0
5.0
2.0
2.0
5.0
5.0
Units
MHz
ns
ns
ns
ns
ns
ns
ns
Units
ns
ns
ns
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