Datasheet

SN54F74, SN74F74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOPS
WITH CLEAR AND PRESET
SDFS046A – MARCH 1987 – REVISED OCTOBER 1993
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
switching characteristics (see Note 3)
PARAMETER
FROM
(
INPUT
)
TO
(
OUTPUT
)
V
CC
= 5 V,
C
L
= 50 pF,
R
L
= 500 Ω,
T
A
= 25°C
V
CC
= 4.5 V to 5.5 V,
C
L
= 50 pF,
R
L
= 500Ω,
T
A
= MIN to MAX
†
UNIT
(INPUT)
(OUTPUT)
′F74 SN54F74 SN74F74
MIN TYP MAX MIN MAX MIN MAX
f
max
100 145 80 100 MHz
t
PLH
CLK
QorQ
3 4.9 6.8 3.8 8.5 3 7.8
ns
t
PHL
CLK
Q
or
Q
3.6 5.8 8 4.4 10.5 3.6 9.2
ns
t
PLH
PRE or CLR
QorQ
2.4 4.2 6.1 3.2 8 2.4 7.1
ns
t
PHL
PRE
or
CLR
Q
or
Q
2.7 6.6 9 3.5 11.5 2.7 10.5
ns
†
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.
NOTE 3: Load circuits and waveforms are shown in Section 1.