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N74F844D 데이터 시트보기 (PDF) - Philips Electronics
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N74F844D
Bus interface latches
Philips Electronics
N74F844D Datasheet PDF : 18 Pages
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Philips Semiconductors
Bus interface latches
Product specification
74F841/74F842/74F843/
74F845/74F846
AC ELECTRICAL CHARACTERISTICS for 74F841/74F842
SYMBOL
PARAMETER
TEST
CONDITION
t
PLH
Propagation delay
t
PHL
Dn to Qn
t
PLH
Propagation delay
t
PHL
LE to Qn
74F841
Waveform 1, 2
Waveform 1, 2
t
PLH
Propagation delay
t
PHL
Dn to Qn
t
PLH
Propagation delay
t
PHL
LE to Qn
74F842
Waveform 1, 2
Waveform 1, 2
t
PZH
Output enable time
t
PZL
High or Low-level OEn to Qn or Qn
Waveform 5
Waveform 6
t
PHZ
Output disable time
t
PLZ
High or Low-level OEn to Qn or Qn
Waveform 5
Waveform 6
LIMITS
T
amb
= +25
°
C
V
CC
= +5.0V
C
L
= 50pF, R
L
= 500
Ω
MIN TYP MAX
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
Ω
MIN
MAX
2.0
4.0
7.5
2.0
8.0
2.5
4.5
7.5
2.5
8.0
4.5
6.5
9.5
4.0
10.0
4.0
6.0
9.0
3.5
9.5
3.5
5.5
8.5
4.5
9.0
3.0
5.0
8.0
4.0
8.5
5.0 7.0 10.0
3.0
10.5
4.5
6.5
9.0
3.0
9.5
2.5
4.5
8.0
2.0
8.5
4.0
6.0
9.5
3.0
10.5
1.0
4.5
8.0
1.0
8.5
1.0
5.0
8.0
1.0
8.5
UNIT
ns
ns
ns
ns
ns
ns
AC SETUP REQUIREMENTS for 74F841/74F842
SYMBOL
PARAMETER
TEST
CONDITION
t
s
(H)
t
s
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
h
(H)
t
h
(L)
t
w
(H)
Setup time, High or Low
Dn to LE
Hold time, High or Low
Dn to LE
LE pulse width, High
Hold time, High or Low
Dn to LE
LE pulse width, High
74F841
74F842
Waveform 4
Waveform 4
Waveform 4
Waveform 4
Waveform 4
LIMITS
T
amb
= +25
°
C
V
CC
= +5.0V
C
L
= 50pF, R
L
= 500
Ω
MIN
TYP
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
Ω
MIN
MAX
0.0
1.0
0.0
1.0
2.5
3.0
3.0
4.0
3.5
4.0
3.0
3.5
3.5
4.5
3.0
3.0
UNIT
ns
ns
ns
ns
ns
1999 Jun 23
11
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