Datasheet

SN54HC574, SN74HC574
OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH 3-STATE OUTPUTS
SCLS148F − DECEMBER 1982 − REVISED AUGUST 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
timing requirements over recommended operating free-air temperature range (unless otherwise
noted)
V
T
A
= 25°C SN54HC574 SN74HC574
UNIT
V
CC
MIN MAX MIN MAX MIN MAX
UNIT
2 V 6 4 5
f
clock
Clock frequency
4.5 V
30 20 24
MHz
f
clock
Clock
frequency
6 V 38 24 28
MHz
2 V 80 120 100
t
w
Pulse duration, CLK high or low
4.5 V
16 24 20
ns
t
w
Pulse
duration,
CLK
high
or
low
6 V 14 20 17
ns
2 V 100 150 125
t
su
Setup time, data before CLK↑
4.5 V
20 30 25
ns
t
su
Setup
time,
data
before
CLK↑
6 V 17 26 21
ns
2 V 5 5 5
t
h
Hold time, data after CLK↑
4.5 V
5 5 5
ns
h
,
6 V 5 5 5
switching characteristics over recommended operating free-air temperature range, C
L
= 50 pF
(unless otherwise noted) (see Figure 1)
PARAMETER
FROM TO
V
T
A
= 25°C SN54HC574 SN74HC574
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
V
CC
MIN TYP MAX MIN MAX MIN MAX
UNIT
2 V 6 11 4 5
f
max
4.5 V 30 36 20 24
MHz
f
max
6 V 36 40 24 28
MHz
2 V 90 180 270 225
t
p
d
CLK Any Q
4.5 V 28 36 54 45
ns
t
pd
CLK
Any
Q
6 V 24 31 46 38
ns
2 V 77 150 225 190
t
en
OE Any Q
4.5 V 26 30 45 38
ns
t
en
OE
Any
Q
6 V 23 26 38 32
ns
2 V 52 150 225 190
t
dis
OE Any Q
4.5 V 24 30 45 38
ns
t
dis
OE
Any
Q
6 V 22 26 38 32
ns
2 V 28 60 90 75
t
t
Any Q
4.5 V 8 12 18 15
ns
t
yQ
6 V 6 10 15 13