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HD74LS193P Scheda tecnica(PDF) 8 Page - Renesas Technology Corp

Il numero della parte HD74LS193P
Spiegazioni elettronici  Synchronous Up / Down Decade Counter (dual clock lines)
PDF  12 Pages
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Produttore elettronici  RENESAS [Renesas Technology Corp]
Homepage  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS193P Scheda tecnica(HTML) 8 Page - Renesas Technology Corp

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HD74LS193
Rev.2.00, Feb.18.2005, page 8 of 11
Waveforms 2
ƒ
max, tPLH, tPHL, (Count Down)
Borrow
Outputs
Count
Down
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
1.3V
tTHL
tw (H)
tw (L)
tTLH
QA
QB
QC
QD
tPHL
tPHL
tPHL
tPHL
tPHL
(Measure before 1 clock of tn + 0)
(Measure
at tn + 0)
(Measure
at tn + 0)
(Measure
at tn + 0)
(Measure
at tn + 0)
(Measure
at tn + 0)
(Measure at tn + 1)
(Measure at tn + 2)
(Measure at tn + 4)
(Measure at tn + 8)
tPLH
tPLH
tPLH
tPLH
tPLH
VOH
VOL
VOH
VOL
VOH
VOL
VOH
VOL
VOH
VOL
0V
3V
10% 10%
90% 90%
Notes:
1.
Input pulse; tTLH
≤ 7 ns, t
THL
≤ 7 ns, PRR = 1 MHz, duty cycle 50%
2.
for
ƒ
max tTLH , tTHL
≤ 2.5 ns.
3.
tn is reference bit time when all outputs are high.



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