參數(shù)資料
型號(hào): HD74LVC74
廠商: Hitachi,Ltd.
英文描述: Dual D-type Flip Flops with Preset and Clear
中文描述: 雙D型人字拖與預(yù)置和清除
文件頁(yè)數(shù): 7/9頁(yè)
文件大?。?/td> 48K
代理商: HD74LVC74
HD74LVC74
7
Waveforms
Input CLR
GND
10 %
10 %
t
w
90 %
V
ref
t
f
t
r
t
f
t
r
90 %
V
ref
10 %
10 %
90 %
V
ref
10 %
t
r
t
f
90 %
V
ref
t (H)
Input PR
GND
90 %
90 %
V
ref
t
rec
t (L)
t
w
t
rec
10 %
t
r
90 %
V
ref
10 %
90 %
V
ref
t (H)
t
f
t (H)
t (L)
t (L)
t
PHL
t
PLH
GND
GND
V
OH
V
OL
t
PLH
t
PHL
t
PLH
t
PHL
t
PLH
t
PHL
V
OH
V
OL
Input CK
Input D
Output Q
Output Q
10 %
V
IH
V
ref
V
2.7 V
1.5 V
IH
V
ref
Symbol
V
CC
= 2.7 V,
3.3
±
0.3 V
V
CC
= 5.0
±
0.5 V
V
CC
50%V
CC
V
IH
V
IH
V
IH
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
V
ref
Notes:
1.
2.
3.
t
r
= 2.5 ns, t
f
= 2.5 ns
Clock pulse input waveform : PRR = 10 MHz, duty cycle 50%
Data input waveform : PRR = 5 MHz, duty cycle 50%
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