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HD74HC93P Datasheet(PDF) 5 Page - Renesas Technology Corp

Part # HD74HC93P
Description  4-bit Binary Counter
PDF  8 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74HC93P Datasheet(HTML) 5 Page - Renesas Technology Corp

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HD74HC93
Rev.2.00, Oct 06, 2005 page 5 of 7
Test Circuit
VCC
Zout = 50
Ω
VCC
CL = 50 pF
QC
R0(2)
A
R0(1)
B
QA
QB
QD
CL = 50 pF
CL = 50 pF
CL = 50 pF
Note: CL includes the probe and jig capacitance.
Pulse generator
Input
Output
Output
Output
Output
Waveforms
Count
Down
QA
VCC
VOL
VOH
0 V
10%
tf
90%
tr
50%
• Waveform – 1
QC
VOL
VOH
QD
VOL
VOH
50%
50%
50%
50%
50%
50%
(Measure at tn+2)
tPHL
50%
(Measure at tn+1)
tPLH
(Measure at tn+4)
tPHL
(Measure at tn+8)
tPHL
(Measure at tn+16)
tPHL
(Measure at tn+8)
tPLH
(Measure at tn+2)
tPLH
(Measure at tn+4)
tPLH
50%
50%
QB
VOL
VOH
10%
tTHL
tTLH
tTHL
tTLH
tTHL
tTLH
tTHL
tTLH
10%
90%
10%
90%
10%
90%
10%
90%
10%
90%
10%
90%
10%
90%
10%
90%
1. Input waveform: PRR
≤ 1 MHz, Zo = 50 Ω, tr ≤ 6 ns, tf ≤ 6 ns
2. tn is reference bit time when all outputs are low.
Notes:



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