Datasheet

CD54AC74, CD74AC74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SCHS231D – SEPTEMBER 1998 – REVISED DECEMBER 2002
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics over recommended operating free-air temperature range,
V
CC
= 1.5 V, C
L
= 50 pF (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
–55°C to
125°C
–40°C to
85°C
UNIT
(INPUT)
(OUTPUT)
MIN MAX MIN MAX
f
max
9 10 MHz
t
PLH
CLK
QQ
125 114
ns
t
PHL
CLK
Q
or
Q
125 114
ns
t
PLH
PRE or CLR
QorQ
132 120
ns
t
PHL
PRE
or
CLR
Q
or
Q
144 131
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
(INPUT)
TO
(OUTPUT)
–55°C to
125°C
–40°C to
85°C
UNIT
(INPUT)
(OUTPUT)
MIN MAX MIN MAX
f
max
79 90 MHz
t
PLH
CLK
QQ
3.5 14 3.6 12.7
ns
t
PHL
CLK
Q
or
Q
3.5 14 3.6 12.7
ns
t
PLH
PRE or CLR
QorQ
3.7 14.7 3.8 13.4
ns
t
PHL
PRE
or
CLR
Q
or
Q
4 16.1 4.1 14.6
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 5 V ± 0.5 V (unless otherwise noted) (see Figure 1)
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
–55°C to
125°C
–40°C to
85°C
UNIT
(INPUT)
(OUTPUT)
MIN MAX MIN MAX
f
max
110 125 MHz
t
PLH
CLK
QQ
2.5 10 2.6 9.1
ns
t
PHL
CLK
Q
or
Q
2.5 10 2.6 9.1
ns
t
PLH
PRE or CLR
QorQ
2.6 10.5 2.7 9.5
ns
t
PHL
PRE
or
CLR
Q
or
Q
2.9 11.5 3 10.4
ns
operating characteristics, T
A
= 25°C
PARAMETER TYP UNIT
C
pd
Power dissipation capacitance 55 pF