m54hc257k1 STMicroelectronics, m54hc257k1 Datasheet - Page 5

• Manufacturer Part Number: m54hc257k1
• Description: Hc258quad 2channel Multiplexer 3-state, Inverting Hc257 Quad 2 Channel Multiplexer 3-state
• 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
Channel)
t
t
t
t
t
Symbol
Symbol
PLH
PZL
PLZ
TLH
PLH
C
C
C
PD
OUT
PD
IN
t
t
t
t
t
PZH
PHZ
is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
THL
PHL
PHL
Output Transition
Time
Propagation Delay
Time
(A, B - Y)
Propagation Delay
Time
(SELECT - Y)
High Impedance
Output Enable
Time
High Impedance
Output Disable
Time
Input Capacitance
Output
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
2.0
4.5
6.0
2.0
4.5
6.0
(V)
CC
CC
Test Condition
Test Condition
150
150
150
50
50
50
50
50
R
R
R
L
L
L
L
= 1 K
= 1 K
= 1 K
= 50 pF, Input t
Min.
Min.
T
T
A
A
r
Typ.
Typ.
= 25°C
= 25°C
25
45
13
11
62
18
15
45
13
11
62
18
15
40
12
10
57
17
14
28
14
13
10
47
= t
7
6
5
f
= 6ns)
Max.
Max.
100
140
100
140
150
140
110
60
12
10
20
17
28
24
20
17
28
24
22
19
30
26
28
24
10
Value
Value
Min.
Min.
-40 to 85°C
-40 to 85°C
CC(opr)
= C
Max.
Max.
125
175
125
175
140
190
175
75
15
13
25
21
35
30
25
21
35
30
28
24
38
32
35
30
10
PD
x V
-55 to 125°C
-55 to 125°C
Min.
Min.
CC
x f
IN
M54HC257
Max.
Max.
+ I
150
210
150
210
165
225
210
90
19
15
30
26
42
36
30
26
42
36
33
28
45
38
42
36
10
CC
/4 (per
Unit
Unit
pF
pF
pF
ns
ns
ns
ns
ns
ns
ns
ns
5/10