MC74HCT138A
http://onsemi.com
4
AC ELECTRICAL CHARACTERISTICS (V
CC
= 5.0 V ± 10%, C
L
= 50 pF, Input t
r
= t
f
= 6.0 ns)
Symbo
Parameter
Guaranteed Limit
Unit
– 55 to
25_C
v 85_C v 125_C
t
PLH
,
t
PHL
Maximum Propagation Delay, Input A to Output Y
(Figures 1 and 4)
30 38 45 ns
t
PLH
,
t
PHL
Maximum Propagation Delay, CS1 to Output Y
(Figures 2 and 4)
27 34 41 ns
t
PLH
,
t
PHL
Maximum Output Transition Time, CS2 or CS3 to Output Y
(Figures 3 and 4)
30 38 45 ns
t
TLH
,
t
THL
Maximum Output Transition Time, Any Output
(Figures 2 and 4)
15 19 22 ns
t
r
, t
f
Maximum Input Rise and Fall Time 500 500 500 ns
C
in
Maximum Input Capacitance 10 10 10 pF
NOTE:For propagation delays with loads other than 50 pF, and information on typical parametric values, see Chapter 2 of the ON
Semiconductor High−Speed CMOS Data Book (DL129/D).
C
PD
Power Dissipation Capacitance (Per Enabled Output)*
Typical @ 25°C, V
CC
= 5.0 V
pF
51
* Used to determine the no−load dynamic power consumption: P
D
= C
PD
V
CC
2
f + I
CC
V
CC
. For load considerations, see Chapter 2 of the
ON Semiconductor High−Speed CMOS Data Book (DL129/D).
A0
A1
A2
CS3
CS2
CS1
1
2
3
4
5
6
15
14
13
12
11
10
9
7
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y0
