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MM74HC259
AC Electrical Characteristics
(V
CC
= 5.0V, T
A
= 25°C, t
r
= t
f
= 6 ns, C
L
= 15 pF unless otherwise specified.)
AC Electrical Characteristics
t
r
= t
f
= 6 ns, C
L
= 50 pF, V
CC
= 2.0V – 6.0V
Note 5: C
PD
determines the no load dynamic power consumption, P
D
= C
PD
V
CC
2
f + I
CC
V
CC
, and the no load dynamic current consumption,
I
S
= C
PD
s V
CC
sf + I
CC
.
Symbol Parameter Conditions Typ
Guaranteed
Units
Limit
t
PHL
, t
PLH
Maximum Propagation Delay 18 32 ns
Data to Output
t
PHL
, t
PLH
Maximum Propagation Delay 20 38 ns
Select to Output
t
PHL
, t
PLH
Maximum Propagation Delay 20 35 ns
Enable to Output
t
PHL
Maximum Propagation Delay 17 27 ns
Clear to Output
t
W
Minimum Enable Pulse Width 10 16 ns
t
W
Minimum Clear Pulse Width 10 16 ns
t
r
, t
f
Maximum Input Rise and Fall Time 500 ns
t
s
Minimum Setup Time Select or 15 20 ns
Data to Enable
t
H
Minimum Hold Time Data or −20ns
Address to Enable
Symbol Parameter Conditions
V
CC
T
A
= 25°CT
A
= −40 to 85°CT
A
= −55 to 125°C
Units
Typ Guaranteed Limits
t
PHL
, t
PLH
Maximum Propagation Delay 2.0V 60 180 225 250 ns
Data to Output 4.5V 19 37 46 52 ns
6.0V 17 32 40 45 ns
t
PHL
, t
PLH
Maximum Propagation Delay 2.0V 72 220 275 310 ns
Select to Output 4.5V 21 43 54 60 ns
6.0V 18 37 46 52 ns
t
PHL
, t
PLH
Maximum Propagation Delay 2.0V 65 200 250 280 ns
Enable to Output 4.5V 27 40 50 58 ns
6.0V 23 35 44 50 ns
t
PHL
Maximum Propagation Delay 2.0V 50 150 190 210 ns
Clear to Output 4.5V 18 31 39 44 ns
6.0V 16 26 32 37 ns
t
W
Minimum Pulse Width 2.0V 80 100 120 ns
Clear or Enable 4.5V 16 20 24 ns
6.0V 14 18 20 ns
t
s
Minimum Setup Time Address 2.0V 100 125 150 ns
or Data to Enable 4.5V 20 25 28 ns
6.0V 15 19 25 ns
t
H
Minimum Hold Time Address 2.0V −10 0 0 0 ns
or Data to Enable 4.5V −20 0 0 ns
6.0V −20 0 0 ns
t
TLH
, t
THL
Maximum Output Rise 2.0V 30 75 95 110 ns
and Fall Time 4.5V 8 15 19 22 ns
6.0V 7 13 16 19 ns
C
IN
Input Capacitance 5 10 10 10 pF
C
PD
Power Dissipation (per package) 80 pF
Capacitance (Note 5)
