IN74HC244A Просмотр технического описания (PDF) - Integral Corp.
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IN74HC244A Datasheet PDF : 5 Pages
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IN74HC244A
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns)
Symbol
Parameter
tPLH, tPHL Maximum Propagation Delay, A to YA or B to
YB (Figures 1 and 3)
tPLZ, tPHZ Maximum Propagation Delay , Output Enable to
YA or YB (Figures 2 and 4)
tPZL, tPZH Maximum Propagation Delay , Output Enable to
YA or YB (Figures 2 and 4)
tTLH, tTHL Maximum Output Transition Time, Any Output
(Figures 1 and 3)
CIN
COUT
Maximum Input Capacitance
Maximum Three-State Output Capacitance
(Output in High-Impedance State)
VCC
Guaranteed Limit
V 25 °C ≤85°C ≤125°C Unit
to
-55°C
2.0 96
4.5 18
6.0 15
115
135
ns
23
27
20
23
2.0 110
140
165
ns
4.5 22
28
33
6.0 19
24
28
2.0 110
140
165
ns
4.5 22
28
33
6.0 19
24
28
2.0 60
75
90
ns
4.5 12
15
18
6.0 10
13
15
-
10
10
10
pF
-
15
15
15
pF
Power Dissipation Capacitance (Per Buffer)
CPD Used to determine the no-load dynamic power
consumption:
PD=CPDVCC2f+ICCVCC
Typical @25°C,VCC=5.0 V
34
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Figure 3. Test Circuit
294
Figure 4. Test Circuit
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