Datasheet
SN54AC574, SN74AC574
OCTAL D-TYPE EDGE-TRIGGERED FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCAS541E − OCTOBER 1995 − REVISED OCTOBER 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 SN54AC574 SN74AC574
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
f
clock
Clock frequency 75 55 60 MHz
t
w
Pulse duration, CLK high or low 6 7.5 7 ns
t
su
Setup time, data before CLK↑ 2.5 6.5 3 ns
t
h
Hold time, data after CLK↑ 1.5 2.5 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 SN54AC574 SN74AC574
UNIT
MIN MAX MIN MAX MIN MAX
UNIT
f
clock
Clock frequency 95 85 85 MHz
t
w
Pulse duration, CLK high or low 4 5 5 ns
t
su
Setup time, data before CLK↑ 1.5 3.5 2 ns
t
h
Hold time, data after CLK↑ 1.5 2.5 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
TO TO
T
A
= 25°C SN54AC574 SN74AC574
UNIT
PARAMETER
TO
(INPUT)
TO
(OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
max
75 112 55 60 MHz
t
PLH
CLK
Q
3.5 8.5 13.5 1 16.5 3.5 15
ns
t
PHL
CLK Q
3.5 7.5 12 1 15 3.5 13.5
ns
t
PZH
OE
Q
2.5 7 11 1 13 2.5 12
ns
t
PZL
OE
Q
3 6.5 10.5 1 12.5 3 11.5
ns
t
PHZ
OE
Q
3.5 7.5 12 1 14 2.5 13
ns
t
PLZ
OE
Q
2 5.5 9 1 10.5 1.5 10
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
TO TO
T
A
= 25°C SN54AC574 SN74AC574
UNIT
PARAMETER
TO
(INPUT)
TO
(OUTPUT)
MIN TYP MAX MIN MAX MIN MAX
UNIT
f
max
95 153 85 85 MHz
t
PLH
CLK
Q
2 6 9.5 1.5 11.5 2 11
ns
t
PHL
CLK Q
2 5.5 8.5 1.5 10.5 2 9.5
ns
t
PZH
OE
Q
2 5 8.5 1.5 9.5 2 9
ns
t
PZL
OE
Q
2 5 8 1.5 9.5 1.5 9
ns
t
PHZ
OE
Q
2 6 9.5 1.5 11.5 1.5 10.5
ns
t
PLZ
OE
Q
1 4.5 7.5 1.5 9 1 8.5
ns
operating characteristics, V
CC
= 5 V, T
A
= 25°C
PARAMETER TEST CONDITIONS TYP UNIT
C
pd
Power dissipation capacitance C
L
= 50 pF, f = 1 MHz 40 pF