Datasheet

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MM74HCT240 • MM74HCT244
AC Electrical Characteristics
MM74HCT240, MM74HCT244 V
CC
5.0V, t
r
t
f
6 ns, T
A
25 C (unless otherwise specified)
AC Electrical Characteristics
MM74HCT240, MM74HCT244 V
CC
5.0V 10%, t
r
t
f
6 ns (unless otherwise specified)
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
V
CC
f I
CC
.
Symbol Parameter Conditions Typ
Guaranteed
Units
Limits
t
PHL
, t
PLH
Maximum Output C
L
45 pF 14 18 ns
Propagation Delay
t
PZL
, t
PZH
Maximum Output C
L
45 pF 20 30 ns
Enable Time R
L
1 k
t
PLZ
, t
PHZ
Maximum Output C
L
5 pF 16 25 ns
Disable Time R
L
1 k
Symbol Parameter Conditions
T
A
25 CT
A
40 to 85 CT
A
55 to 125 C
Units
Typ Guaranteed Limits
t
PHL
, t
PLH
Maximum Output C
L
50 pF 14 20 25 30 ns
Propagation Delay C
L
150 pF 20 28 35 42 ns
t
PZH
, t
PZL
Maximum Output R
L
1 k C
L
50 pF 21 30 38 45 ns
Enable Time C
L
150 pF 26 42 53 63 ns
t
PHZ
, t
PLZ
Maximum Output R
L
1 k 16 25 32 38 ns
Disable Time C
L
50 pF
t
THL
, t
TLH
Maximum Output C
L
50 pF 6 12 15 18 ns
Rise and Fall Time
C
IN
Maximum Input 10 15 15 15 pF
Capacitance
C
OUT
Maximum Output 15 20 20 20 pF
Capacitance
C
PD
Power Dissipation (per buffer)
Capacitance (Note 5) G V
CC
, G GND 5 pF
G
GND, G V
CC
90 pF