Datasheet

5-4
FAST AND LS TTL DATA
SN54/74LS390 • SN54/74LS393
DC CHARACTERISTICS OVER OPERATING TEMPERATURE RANGE (unless otherwise specified)
Sbl
P
Limits
Ui
T C di i
Symbol Parameter
Min Typ Max
Unit Test Conditions
V
IH
Input HIGH Voltage 2.0 V
Guaranteed Input HIGH Voltage for
All Inputs
V
IL
Input LOW Voltage
54 0.7
V
Guaranteed Input LOW Voltage for
V
IL
I
npu
t
LOW
V
o
lt
age
74 0.8
V
pg
All Inputs
V
IK
Input Clamp Diode Voltage –0.65 –1.5 V V
CC
= MIN, I
IN
= –18 mA
V
OH
Output HIGH Voltage
54 2.5 3.5 V
V
CC
= MIN, I
OH
= MAX, V
IN
= V
IH
V
OH
O
u
t
pu
t
HIGH
V
o
lt
age
74 2.7 3.5 V
CC
,
OH
,
IN IH
or V
IL
per Truth Table
V
OL
Output LOW Voltage
54, 74 0.25 0.4 V I
OL
= 4.0 mA
V
CC
= V
CC
MIN,
V
IN
=V
IL
or V
IH
V
OL
O
u
t
pu
t
LOW
V
o
lt
age
74 0.35 0.5 V I
OL
= 8.0 mA
V
IN
=
V
IL
or
V
IH
per Truth Table
I
IH
Input HIGH Current
20 µA V
CC
= MAX, V
IN
= 2.7 V
I
IH
I
npu
t
HIGH
C
urren
t
0.1 mA V
CC
= MAX, V
IN
= 7.0 V
I
I LOW C
MR –0.4 mA
V MAX V 0 4 V
I
IL
Input LOW Current
CP, CP
0
–1.6 mA
V
CC
= MAX, V
IN
= 0.4 V
CP
1
–2.4 mA
I
OS
Short Circuit Current (Note 1) –20 –100 mA V
CC
= MAX
I
CC
Power Supply Current 26 mA V
CC
= MAX
Note 1: Not more than one output should be shorted at a time, nor for more than 1 second.
AC CHARACTERISTICS (T
A
= 25°C, V
CC
= 5.0 V)
Sbl
P
Limits
Ui
T C di i
Symbol Parameter
Min Typ Max
Unit Test Conditions
f
MAX
Maximum Clock Frequency
CP
0
to Q
0
25 35 MHz
C15F
f
MAX
Maximum Clock Frequency
CP
1
to Q
1
20 MHz
C15F
t
PLH
t
PHL
Propagation Delay,
CP
to Q
0
LS393
12
13
20
20
ns
C15F
t
PLH
t
PHL
CP
0
to Q
0
LS390
12
13
20
20
ns
C15F
t
PLH
t
PHL
CP to Q
3
LS393
40
40
60
60
ns
C
L
= 15 pF
t
PLH
t
PHL
CP
0
to Q
2
LS390
37
39
60
60
ns
L
p
t
PLH
t
PHL
CP
1
to Q
1
LS390
13
14
21
21
ns
t
PLH
t
PHL
CP
1
to Q
2
LS390
24
26
39
39
ns
t
PLH
t
PHL
CP
1
to Q
3
LS390
13
14
21
21
ns
t
PHL
MR to Any Output LS390/393 24 39 ns