Datasheet

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Timing Requirements
Switching Characteristics
Switching Characteristics
Operating Characteristics
SN74AUC74
DUAL POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP
WITH CLEAR AND PRESET
SCES483A AUGUST 2003 REVISED MARCH 2005
over recommended operating free-air temperature range (unless otherwise noted) (see Figure 1 )
V
CC
= 1.2 V V
CC
= 1.5 V V
CC
= 1.8 V V
CC
= 2.5 V
V
CC
= 0.8 V
± 0.1 V ± 0.1 V ± 0.15 V ± 0.2 V
UNIT
TYP MIN MAX MIN MAX MIN MAX MIN MAX
f
clock
Clock frequency 100 225 250 300 350 MHz
CLK high or low 4.6 1.3 0.6 0.5 0.5
t
w
Pulse duration CLR low 6.6 2 1.5 1.5 1.5 ns
PRE low 4.8 1.8 1.5 1.5 1.5
Data 2.3 1 0.6 0.6 0.7
Setup time before
t
su
CLR inactive 0 0 0 0 0.3 ns
CLK
PRE inactive 0 0 0 0.2 0.3
t
h
Hold time, data after CLK 2.1 0.3 0.3 0.3 0.3 ns
over recommended operating free-air temperature range, C
L
= 15 pF (unless otherwise noted) (see Figure 1 )
V
CC
= 1.2 V V
CC
= 1.5 V V
CC
= 1.8 V V
CC
= 2.5 V
V
CC
= 0.8 V
FROM TO
± 0.1 V ± 0.1 V ± 0.15 V ± 0.2 V
PARAMETER UNIT
(INPUT) (OUTPUT)
TYP MIN MAX MIN MAX MIN TYP MAX MIN MAX
f
max
100 225 250 300 350 MHz
CLK 9.5 1.3 4 0.7 2.5 0.5 1.2 2.1 0.5 1.4
t
pd
CLR Q or Q 10.5 1.5 4.1 1.1 2.9 0.9 1.4 2.4 0.7 1.6 ns
PRE 12 1.6 4.7 1.1 2.8 0.9 1.4 2.4 0.7 1.6
over recommended operating free-air temperature range, C
L
= 30 pF (unless otherwise noted) (see Figure 1 )
V
CC
= 1.8 V V
CC
= 2.5 V
FROM TO
± 0.15 V ± 0.2 V
PARAMETER UNIT
(INPUT) (OUTPUT)
MIN TYP MAX MIN MAX
f
max
300 350 MHz
CLK 1.2 1.9 2.8 1 2.2
t
pd
CLR Q or Q 1.3 2.1 3 1.1 2.4 ns
PRE 1.3 2.1 3.1 1.1 2.5
T
A
= 25 ° C
V
CC
= 0.8 V V
CC
= 1.2 V V
CC
= 1.5 V V
CC
= 1.8 V V
CC
= 2.5 V
TEST
PARAMETER UNIT
CONDITIONS
TYP TYP TYP TYP TYP
Power dissipation
C
pd
f = 10 MHz 36 36 36 37 41 pF
capacitance
4