Datasheet
SN54AHC574, SN74AHC574
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS244I – OCTOBER 1995 – REVISED JULY 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
T
A
= 25°C SN54AHC574 SN74AHC574
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
t
w
Pulse duration, CLK high or low 5 5 5 ns
t
su
Setup time, data before CLK↑
3.5 3.5 3.5 ns
t
h
Hold time, data after CLK↑ 1.5 1.5 1.5 ns
timing requirements over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
T
A
= 25°C SN54AHC574 SN74AHC574
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
t
w
Pulse duration, CLK high or low 5 5 5 ns
t
su
Setup time, data before CLK↑
3 3 3 ns
t
h
Hold time, data after CLK↑ 1.5 1.5 1.5 ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO LOAD
T
A
= 25°C SN54AHC574 SN74AHC574
UNIT
PARAMETER
(INPUT) (OUTPUT) CAPACITANCE
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
C
L
= 15 pF 80* 125* 65* 65
MHz
f
max
C
L
= 50 pF 50 75 45 45
MHz
t
PLH
CLK
Q
C
L
=15
p
F
8.5* 13.2* 1* 15.5* 1 15.5
ns
t
PHL
CLK
Q
C
L
=
15
pF
8.5* 13.2* 1* 15.5* 1 15.5
ns
t
PZH
OE
Q
C
L
=15
p
F
8.2* 12.8* 1* 15* 1 15
ns
t
PZL
OE
Q
C
L
=
15
pF
8.2* 12.8* 1* 15* 1 15
ns
t
PHZ
OE
Q
C
L
=15
p
F
8.5* 13* 1* 15* 1 15
ns
t
PLZ
OE
Q
C
L
=
15
pF
8.5* 13* 1* 15* 1 15
ns
t
PLH
CLK
Q
C
L
=50
p
F
11 16.7 1 19 1 19
ns
t
PHL
CLK
Q
C
L
=
50
pF
11 16.7 1 19 1 19
ns
t
PZH
OE
Q
C
L
=50
p
F
10.7 16.3 1 18.5 1 18.5
ns
t
PZL
OE
Q
C
L
=
50
pF
10.7 16.3 1 18.5 1 18.5
ns
t
PHZ
OE
Q
C
L
=50
p
F
11 15 1 17 1 17
ns
t
PLZ
OE
Q
C
L
=
50
pF
11 15 1 17 1 17
ns
t
sk(o)
C
L
= 50 pF 1.5** 1.5 ns
∗
On products compliant to MIL-PRF-38535, this parameter is not production tested.
∗∗
On products compliant to MIL-PRF-38535, this parameter does not apply.