
Philips Semiconductors
Product specification
74ALS573B/74ALS574A
Latch/flip-flop
1991 Feb 08
7
AC ELECTRICAL CHARACTERISTICS
LIMITS
SYMBOL
PARAMETER
TEST CONDITION
T
amb
= 0
°
C to +70
°
C
V
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
MAX
t
PLH
t
PHL
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
f
MAX
t
PLH
t
PHL
t
PZH
t
PZL
t
PHZ
t
PLZ
Propagation delay
Dn to Qn
Waveform 3
2.0
2.0
10.0
10.0
ns
Propagation delay
E to Qn
74ALS573B
Waveform 2
4.0
4.0
12.0
12.0
ns
Output enable time
to High or Low level
Waveform 6
Waveform 7
2.0
4.0
9.0
11.0
ns
Output disable time
from High or Low level
Waveform 6
Waveform 7
1.0
2.0
9.0
11.0
ns
Maximum clock frequency
Waveform 1
45
MHz
Propagation delay
CP to Qn
Waveform 1
3.0
4.0
12.0
12.0
ns
Output enable time
to High or Low level
74ALS574A
Waveform 6
Waveform 7
2.0
4.0
9.0
11.0
ns
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
T
amb
= 0
°
C to +70
°
C
V
CC
= +5.0V
±
10%
C
L
= 50pF, R
L
= 500
UNIT
MIN
MAX
t
su
(H)
t
su
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
su
(H)
t
su
(L)
t
h
(H)
t
h
(L)
t
w
(H)
t
w
(L)
Setup time, High or Low
Dn to E
Waveform 4
6.0
6.0
ns
Hold time, High or Low
Dn to E
74ALS573B
Waveform 4
6.0
6.0
ns
E Pulse width, High
Waveform 1
10.0
ns
Setup time, High or Low
Dn to CP
Waveform 5
6.0
6.0
ns
Hold time, High or Low
Dn to CP
74ALS574A
Waveform 5
1.0
1.0
ns
CP Pulse width,
High or Low
Waveform 5
8.0
12.0
ns