Datasheet

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MM74HCT138
AC Electrical Characteristics
T
A
= 25°C, V
CC
= 5.0V, t
r
= t
f
= 6 ns, C
L
= 15 pF (unless otherwise specified)
AC Electrical Characteristics
V
CC
= 5V ± 10%, C
L
= 50 pF, t
r
= t
f
= 6 ns (unless otherwise specified)
Note 6: 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
Limit
t
PHL
Maximum Propagation Delay, A, B, or C to Output 20 35 ns
t
PLH
Maximum Propagation Delay, A, B, or C to Output 13 25 ns
t
PHL
Maximum Propagation Delay, G1 to Y Output 14 25 ns
t
PLH
Maximum Propagation Delay, G1 to Y Output 13 25 ns
t
PHL Maximum Propagation Delay, G2A or G2B to Y Output
17 30 ns
t
PLH Maximum Propagation Delay, G2A or G2B to Y Output
13 25 ns
Symbol Parameter Conditions
T
A
= 25°CT
A
= −40 to 85°CT
A
= −55 to 125°C
Units
Typ Guaranteed Limits
t
PHL
Maximum Propagation Delay 24 40 50 60 ns
A, B, or C to Output
t
PLH
Maximum Propagation Delay 18 30 38 45 ns
A, B, or C to Output
t
PHL
Maximum Propagation Delay 17 30 38 45 ns
G1 to Y Output
t
PLH
Maximum Propagation Delay 20 30 38 45 ns
G1 to Y Output
t
PHL
Maximum Propagation Delay 23 35 43 52 ns
G2A or G2B to Y Output
t
PLH
Maximum Propagation Delay 18 30 38 45 ns
G2A or G2B to Y Output
t
THL
, t
TLH
Maximum Output 15 19 22 ns
Rise and Fall Time
C
IN
Input Capacitance 5 10 10 pF
C
PD
Power Dissipation 55 pF
Capacitance (Note 6)