m54hc251k STMicroelectronics, m54hc251k Datasheet - Page 5

• Manufacturer Part Number: m54hc251k
• Description: 8 Bit Sipo Shift Register
• 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
Symbol
Symbol
PLH
PZL
PLZ
TLH
t
C
C
PD
PHL
PD
IN
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
Output Transition
Time
Propagation Delay
Time
(D - Y, W)
Propagation Delay
Time
(A, B, C -Y, W)
High Impedance
Output Enable
Time
High Impedance
Output Disable
Time
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
(V)
5.0
5.0
CC
CC
Test Condition
Test Condition
R
R
L
L
= 1 K
= 1 K
L
= 50 pF, Input t
Min.
Min.
T
T
A
A
r
Typ.
Typ.
= 25°C
= 25°C
30
64
16
14
80
20
17
36
11
26
13
11
62
= t
8
7
9
5
f
= 6ns)
Max.
Max.
130
160
75
15
13
26
22
32
27
90
18
15
85
17
14
10
Value
Value
Min.
Min.
-40 to 85°C
-40 to 85°C
CC(opr)
= C
Max.
Max.
165
200
105
115
95
19
16
33
28
40
34
23
20
21
18
10
PD
x V
-55 to 125°C
-55 to 125°C
Min.
Min.
CC
x f
IN
M54HC251
Max.
Max.
+ I
115
195
240
135
130
23
20
39
33
48
41
27
23
26
22
10
CC
Unit
Unit
pF
pF
ns
ns
ns
ns
ns
5/10