HD74HC85P 查看數據表（PDF） - Renesas Electronics
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HD74HC85P Datasheet PDF : 8 Pages
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HD74HC85
Test Circuit
VCC
Input
Pulse generator
Zout = 50 Ω
VCC
A3
B3
A2
B2
A1
B1
A0
B0
A<B
A=B
A>B
A>B
A=B
A<B
Output
Output
CL = 50 pF
Output
CL = 50 pF
CL = 50 pF
Note: CL includes the probe and jig capacitance.
Waveforms
tr
tf
90 %
90 %
VCC
Input
50 %
50 %
10 %
10 %
0V
tPLH
tPHL
Same-phase output
50 %
10 %
90 %
tPHL tTLH
90 %
VOH
50 %
10 %
VOL
tPLH
tTHL
Inverse-phase output
90 %
50 %
10 %
90 %
VOH
50 %
10 %
VOL
tTHL
tTLH
Notes: 1. Input waveform: PRR ≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns
2. The output are measured one at a time with one transition per measurement.
Rev.2.00, Oct 06, 2005 page 5 of 7
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