MC74HC139AN 查看數據表（PDF） - ON Semiconductor
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MC74HC139AN Datasheet PDF : 10 Pages
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MC74HC139A
tf
90%
50%
SELECT 10%
OUTPUT Y
tTHL
tPHL
90%
50%
10%
tr
tPLH
VCC
GND
tTLH
Figure 3. Switching Waveform
INPUT A
tPLH
OUTPUT Y
VALID
50%
50%
VALID
tPHL
Figure 4. Switching Waveform
VCC
GND
TEST POINT
DEVICE
UNDER
TEST
OUTPUT
CL*
* Includes all probe and jig capacitance
Figure 5. Test Circuit
http://onsemi.com
5
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