m54hc245k1 STMicroelectronics, m54hc245k1 Datasheet - Page 5

• Manufacturer Part Number: m54hc245k1
• Description: Octal Bus Transceiver 3-state Hc245 Non Inverting Hc640 Inverting, Hc643 Inverting/non Inverting
• 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
C
C
C
PD
I/OUT
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
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
(V)
CC
CC
Test Condition
Test Condition
(pF)
150
150
C
50
50
50
50
L
R
R
R
L
L
L
L
DIR, G
An, Bn
= 1 K
= 1 K
= 1 K
= 50 pF, Input t
Min.
Min.
T
T
A
A
r
Typ.
Typ.
= 25°C
= 25°C
25
33
12
10
48
16
14
48
16
14
63
21
18
37
17
15
13
39
= t
7
6
5
f
= 6ns)
Max.
Max.
120
150
180
150
60
12
10
90
18
15
24
20
30
26
36
31
30
26
10
CC(opr)
Value
Value
Min.
Min.
-40 to 85°C
-40 to 85°C
= C
Max.
Max.
PD
150
190
225
190
115
75
19
13
23
20
30
26
38
32
45
38
38
32
10
x V
CC
-55 to 125°C
-55 to 125°C
Min.
Min.
x f
IN
+ I
M54HC245
CC
Max.
Max.
135
180
225
270
225
90
18
15
27
23
36
31
45
38
54
46
45
38
10
/8 (per circuit)
Unit
Unit
pF
pF
pF
ns
ns
ns
ns
ns
ns
5/10