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部品番号
コンポーネント説明
HD74LS191FPEL データシートの表示(PDF) - Renesas Electronics
部品番号
コンポーネント説明
メーカー
HD74LS191FPEL
Synchronous Up / Down 4-bit Binary Counter (single clock line)
Renesas Electronics
HD74LS191FPEL Datasheet PDF : 11 Pages
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10
HD74LS191
Waveforms 2
Load
→
Q, Data
→
Q
3V
Load
1.3V
1.3V
0V
Data
(A to D)
1.3V
3V
1.3V
0V
Output Q
1.3V
1.3V
1.3V
1.3V
V
OH
V
OL
t
PLH
t
PHL
t
PLH
t
PHL
Note: Conditions on other inputs are irrelevant.
Waveforms 3
G
→
Ripple CK, CK
→
Ripple CK, Down / Up
→
Ripple CK, Down / Up
→
Max / Min
3V
Load
0V
Down/Up
3V
1.3V
1.3V
0V
Clock
3V
1.3V
1.3V
0V
3V
G
t
PHL
t
PLH
0V
t
PHL
t
PLH
Ripple/Clock
1.3V 1.3V
1.3V 1.3V
t
PLH
t
PHL
V
OH
V
OL
Max/Min
1.3V
1.3V
V
OH
V
OL
Rev.2.00, Feb.18.2005, page 8 of 10
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