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HD74LS193P 데이터시트(PDF) 8 Page - Renesas Technology Corp

부품명 HD74LS193P
상세설명  Synchronous Up / Down Decade Counter (dual clock lines)
PDF  12 Pages
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제조업체  RENESAS [Renesas Technology Corp]
홈페이지  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

HD74LS193P 데이터시트(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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