MC74HC259A Просмотр технического описания (PDF) - ON Semiconductor
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MC74HC259A Datasheet PDF : 9 Pages
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MC74HC259A
SWITCHING WAVEFORMS
VCC
DATA IN
GND
tr
DATA IN
tPLH
OUTPUT Q
90%
50%
10%
90%
50%
10%
tTLH
Figure 2.
tf
VCC
GND
tPHL
tTHL
ADDRESS
SELECT
OUTPUT Q
50%
50%
tPHL
50%
VCC
GND
VCC
GND
tPLH
Figure 3.
VCC
DATA IN
VCC
GND
DATA IN
tw
tw
GND
VCC
tw
VCC
ENABLE
50%
50% 50%
RESET
50%
GND
tPHL
tPLH
tPHL
GND
OUTPUT Q
OUTPUT Q
50%
Figure 4.
Figure 5.
DATA IN
OR 50%
ADDRESS
SELECT
ENABLE
th(H)
tsu
50%
Figure 6.
TEST POINT
VCC
GND
th(L)
tsu
VCC
OUTPUT
DEVICE
UNDER
TEST
CL*
GND
*Includes all probe and jig capacitance
Figure 7. Test Circuit
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