m74hct640 STMicroelectronics, m74hct640 Datasheet - Page 5

• Manufacturer Part Number: m74hct640
• Description: Ic Transcvr Tri-st 8bit 20dip
• 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
TLH
PLH
PZL
PLZ
C
C
PD
C
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)
4.5
4.5
4.5
4.5
(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
13
18
19
24
17
13
37
= t
7
5
f
= 6ns)
Max.
Max.
12
22
30
30
38
30
10
CC(opr)
Value
Value
-40 to 85°C
Min.
-40 to 85°C
Min.
= C
Max.
Max.
PD
15
28
38
38
48
38
10
x V
CC
-55 to 125°C
-55 to 125°C
Min.
Min.
x f
IN
M74HCT640
+ I
CC
Max.
Max.
18
33
45
45
57
45
10
/8 (per circuit)
Unit
Unit
pF
pF
pF
ns
ns
ns
ns
5/11