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74VHCT244AN View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
74VHCT244AN
Fairchild
Fairchild Semiconductor Fairchild
74VHCT244AN Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Noise Characteristics
Symbol
Parameter
VCC
(V)
VOLP
Quiet Output Maximum Dynamic VOL
5.0
(Note 7)
VOLV
Quiet Output Minimum Dynamic VOL
5.0
(Note 7)
VIHD
Minimum HIGH Level Dynamic Input Voltage
5.0
(Note 7)
VILD
Maximum LOW Level Dynamic Input Voltage
5.0
(Note 7)
Note 7: Parameter guaranteed by design.
TA 25qC
Typ
Limits
0.9
1.1
0.9
1.1
2.0
0.8
Units
V
V
V
V
Conditions
CL 50 pF
CL 50 pF
CL 50 pF
CL 50 pF
AC Electrical Characteristics
Symbol
Parameter
V CC
(V)
TA 25qC
TA 40qC to 85qC
Units
Min
Typ
Max
Min
Max
Conditions
tPLH
tPHL
tPZL
tPZH
tPLZ
tPHZ
tOSLH
tOSHL
CIN
Propagation Delay
Time
3-STATE Output
Enable Time
3-STATE Output
Disable Time
Output to
Output Skew
Input
Capacitance
5.0 r 0.5
5.0 r 0.5
5.0 r 0.5
5.0 r 0.5
5.4
7.4
1.0
8.5
ns
5.9
8.4
1.0
9.5
CL 15 pF
CL 50 pF
7.7
10.4
1.0
12.5
ns RL 1 k: CL 15 pF
8.2
11.4
1.0
13.5
CL 50 pF
8.8
11.4
1.0
13.0
ns RL 1 k: CL 50 pF
1.0
1.0
ns (Note 8)
4
10
10
pF VCC Open
COUT
Output
Capacitance
9
pF VCC 5.0V
CPD
Power Dissipation
18
Capacitance
pF (Note 9)
Note 8: Parameter guaranteed by design. tOSLH |tPLH max  tPLH min|; tOSHL |tPHL max  tPHL min|
Note 9: CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating current consumption without load. Average
operating current can be obtained by the equation: ICC (opr.) CPD * VCC * fIN  ICC/8 (per F/F). The total CPD when n pcs. of the Octal D Flip-Flop operates
can be calculated by the equation: CPD (total) 20  12n.
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