m54hc148k1 STMicroelectronics, m54hc148k1 Datasheet - Page 5

• Manufacturer Part Number: m54hc148k1
• Description: 8 To 3 Line Priority Encoder
• Manufacturer: STMicroelectronics

AC ELECTRICAL CHARACTERISTICS (C
CAPACITIVE CHARACTERISTICS
1) C
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
t
t
t
t
t
t
Symbol
Symbol
PLH
PLH
PLH
PLH
PLH
TLH
C
C
PD
PD
IN
t
t
t
t
t
t
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
THL
PHL
PHL
PHL
PHL
PHL
Output Transition
Time
Propagation Delay
Time (In - A0, A1,
A2)
Propagation Delay
Time (In - EO, GS)
Propagation Delay
Time (EI -EO)
Propagation Delay
Time (EI -GS)
Propagation Delay
Time (EI - A0, A1,
A2)
Input Capacitance
Power Dissipation
Capacitance (note
1)
Parameter
Parameter
V
V
(V)
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
(V)
5.0
5.0
CC
CC
Test Condition
Test Condition
L
= 50 pF, Input t
Min.
Min.
T
T
A
A
r
Typ.
Typ.
= 25°C
= 25°C
30
60
19
16
60
19
16
40
14
12
40
14
12
40
14
12
60
= t
8
7
5
f
= 6ns)
Max.
Max.
150
150
115
115
115
75
15
13
30
26
30
26
23
20
23
20
23
20
10
Value
Value
Min.
Min.
-40 to 85°C
-40 to 85°C
CC(opr)
= C
Max.
Max.
190
190
145
145
145
95
19
16
38
32
38
32
29
25
29
25
29
25
10
PD
x V
-55 to 125°C
-55 to 125°C
Min.
Min.
CC
x f
IN
M54HC148
Max.
Max.
+ I
110
225
225
175
175
175
22
19
45
38
45
38
35
30
35
30
35
30
10
CC
Unit
Unit
pF
pF
ns
ns
ns
ns
ns
ns
5/10