Samsung S-2400 Service Manual page 39

IC Internal Diagram
AC Electrical Characteristics
e e e
V 5 0V t t
CC r f
AC Electrical Characteristics
e
g
V 5 0V 10% t
CC
Symbol
t t Maximum Output
PHL PLH
Propagation Delay
t Maximum Output
PZL
Enable Time
t Maximum Output
PZH
Enable Time
t t Maximum Output
PHZ PLZ
Disable Time
t t Maximum Output
THL TLH
Rise and Fall Time
C Maximum Input
IN
Capacitance
C Maximum Output Input
OUT
Capacitance
C Power Dissipation
PD
Capacitance
Note 5 C determines the no load power consumption P
PD
Samsung Electronics
MM74HCT245
e
6 ns T 25 C (unless otherwise specified)
A
Symbol Parameter
t t Maximum Output
PHL PLH
Propagation Delay
t t Maximum Output
PZL PZH
Enable Time
t t Maximum Output
PLZ PHZ
Disable Time
MM74HCT245
e e
t 6 ns (unless otherwise specified)
r f
Parameter Conditions
e
C 50 pF
L
e
C 150 pF
L
e
R 1 kX
L
e
C 50 pF
L
e
R 1 kX
L
e
C 50 pF
L
e
R 1 kX
L
e
C 50 pF
L
e
C 50 pF
L
(Note 5) G
GND G
e
D
Conditions Typ
e
C 45 pF 16
L
e
C 45 pF 29
L
e
R 1 kX
L
e
C 5 pF 20
L
e
R 1 kX
L
e
T 25 C
A
Typ Guaranteed Limits
17 23
24 30
31 42
23 33
21 30
8 12
10 15
20 25
e
V 7
CC
e
100
a
2
C V f I V and the no load dynamic current consumption I
PD CC CC CC
3
Guaranteed
Units
Limit
20 ns
40 ns
25 ns
74HCT
e
T 125 C
A
e b
T 40 to 85 C
A
29 34
38 45
53 63
41 49
38 45
15 18
15 15
25 25
e
C V
S PD
http
Units
ns
ns
ns
ns
ns
ns
pF
pF
pF
pF
a
f I
CC CC
www national com
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