Datasheet

CD54AC109, CD74AC109
DUAL J-K
POSITIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET
SCHS326 – JANUARY 2003
5
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)
–55°C to
125°C
–40°C to
85°C
UNIT
MIN MAX MIN MAX
f
clock
Clock frequency 71 81 MHz
t
Pulse duration
CLK high or low 7 6
ns
t
w
Pulse
duration
CLR or PRE 6.3 5.5
ns
t
su
Setup time, before CLK↑ J or K 7.7 6.8 ns
t
h
Hold time, after CLK↑ J or K 0 0 ns
t
rec
Recovery time, before CLK↑ CLR↑ or PRE↑ 3.5 3.1 ns
timing requirements over recommended operating free-air temperature range, V
CC
= 5 V ± 0.5 V
(unless otherwise noted)
–55°C to
125°C
–40°C to
85°C
UNIT
MIN MAX MIN MAX
f
clock
Clock frequency 100 114 MHz
t
Pulse duration
CLK high or low 5 4.4
ns
t
w
Pulse
duration
CLR or PRE 4.5 3.9
ns
t
su
Setup time, before CLK↑ J or K 5.5 4.8 ns
t
h
Hold time, after CLK↑ J or K 0 0 ns
t
rec
Recovery time, before CLK↑ CLR↑ or PRE↑ 2.5 2.2 ns
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
8 9 MHz
t
PLH
CLK
QQ
129 117
ns
t
PLH
CLR or PRE
Q
or
Q
153 139
ns
t
PHL
CLK
QorQ
129 117
ns
t
PHL
CLR or PRE
Q
or
Q
153 139
ns
switching characteristics over recommended operating free-air temperature range,
V
CC
= 3.3 V ± 0.3 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
71 81 MHz
t
PLH
CLK
QQ
3.6 14.4 3.7 13.1
ns
t
PLH
CLR or PRE
Q
or
Q
4.3 17.1 4.4 15.5
ns
t
PHL
CLK
QorQ
3.6 14.4 3.7 13.1
ns
t
PHL
CLR or PRE
Q
or
Q
4.3 17.1 4.4 15.5
ns