Datasheet
SN54F109, SN74F109
DUAL J-K
POSITIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET
SDFS047A – MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER
TEST CONDITIONS
SN54F109 SN74F109
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP
†
MAX MIN TYP
†
MAX
UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 V
V
OH
V
CC
= 4.5 V, I
OH
= – 1 mA 2.5 3.4 2.5 3.4
V
V
OH
V
CC
= 4.75 V, I
OH
= – 1 mA 2.7
V
V
OL
V
CC
= 4.5 V, I
OL
= 20 mA 0.3 0.5 0.3 0.5 V
I
I
V
CC
= 5.5 V, V
I
= 7 V 0.1 0.1 mA
I
IH
V
CC
= 5.5 V, V
I
= 2.7 V 20 20 µA
I
IL
J, K, CLK
V
CC
=55V
V
I
=05V
– 0.6 – 0.6
mA
I
IL
PRE or CLR
V
CC
=
5
.
5
V
,
V
I
=
0
.
5
V
– 1.8 – 1.8
mA
I
OS
‡
V
CC
= 5.5 V, V
O
= 0 –60 –150 –60 –150 mA
I
CC
V
CC
= 5.5 V, See Note 2 11.7 17 11.7 17 mA
†
All typical values are at V
CC
= 5 V, T
A
= 25°C.
‡
Not more than one output should be shorted at a time, and the duration of the short circuit should not exceed one second.
NOTE 2: I
CC
is measured with J, K
, CLK, and PRE grounded then with J, K, CLK, and CLR grounded.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
V
CC
= 5 V,
T
A
= 25°C
SN54F109 SN74F109
UNIT
′F74
UNIT
MIN MAX MIN MAX MIN MAX
f
clock
Clock frequency 0 100 0 70 0 90 MHz
t
Pulse duration
CLK high, PRE or CLR low 4 4 4
ns
t
w
P
u
lse
d
u
ration
CLK low 5 5 5
ns
Setup time data before CLK↑
High 3 3 3
t
su
S
e
t
up
ti
me,
d
a
t
a
b
e
f
ore
CLK↑
Low 3 3 3
ns
su
Setup time, inactive-state before CLK↑
§
PRE or CLR to CLK 2 2 2
t
h
Hold time data after CLK↑
High 1 1 1
ns
t
h
Hold
time
,
data
after
CLK↑
Low 1 1 1
ns
§
Inactive-state setup time is also referred to as recovery time.
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)
′F109 SN54F109 SN74F109
MIN TYP MAX MIN MAX MIN MAX
f
max
100 150 70 90 MHz
t
PLH
CLK
QorQ
3 4.9 7 3 9 3 8
ns
t
PHL
CLK
Q
or
Q
3.6 5.8 8 3.6 10.5 3.6 9.2
ns
t
PLH
PRE or CLR
QorQ
2.4 4.8 7 2.4 9 2.4 8
ns
t
PHL
PRE
or
CLR
Q
or
Q
2.7 6.6 9 2.7 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.