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74ALS574A 数据表(PDF) 7 Page - NXP Semiconductors

部件名 74ALS574A
功能描述  Latch flip-flop
Download  13 Pages
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制造商  PHILIPS [NXP Semiconductors]
网页  http://www.nxp.com
标志 PHILIPS - NXP Semiconductors

74ALS574A 数据表(HTML) 7 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
74ALS573B/74ALS574A
Latch/flip-flop
1991 Feb 08
7
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
UNIT
MIN
MAX
tPLH
tPHL
Propagation delay
Dn to Qn
Waveform 3
2.0
2.0
10.0
10.0
ns
tPLH
tPHL
Propagation delay
E to Qn
74ALS573B
Waveform 2
4.0
4.0
12.0
12.0
ns
tPZH
tPZL
Output enable time
to High or Low level
74ALS573B
Waveform 6
Waveform 7
2.0
4.0
9.0
11.0
ns
tPHZ
tPLZ
Output disable time
from High or Low level
Waveform 6
Waveform 7
1.0
2.0
9.0
11.0
ns
fMAX
Maximum clock frequency
Waveform 1
45
MHz
tPLH
tPHL
Propagation delay
CP to Qn
Waveform 1
3.0
4.0
12.0
12.0
ns
tPZH
tPZL
Output enable time
to High or Low level
74ALS574A
Waveform 6
Waveform 7
2.0
4.0
9.0
11.0
ns
tPHZ
tPLZ
Output disable time
from High or Low level
Waveform 6
Waveform 7
1.0
2.0
9.0
11.0
ns
AC SETUP CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
Tamb = 0°C to +70°C
VCC = +5.0V ± 10%
CL = 50pF, RL = 500Ω
UNIT
MIN
MAX
tsu(H)
tsu(L)
Setup time, High or Low
Dn to E
Waveform 4
6.0
6.0
ns
th(H)
th(L)
Hold time, High or Low
Dn to E
74ALS573B
Waveform 4
6.0
6.0
ns
tw(H)
E Pulse width, High
Waveform 1
10.0
ns
tsu(H)
tsu(L)
Setup time, High or Low
Dn to CP
Waveform 5
6.0
6.0
ns
th(H)
th(L)
Hold time, High or Low
Dn to CP
74ALS574A
Waveform 5
1.0
1.0
ns
tw(H)
tw(L)
CP Pulse width,
High or Low
Waveform 5
8.0
12.0
ns


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