Datasheet

SN74F112
DUAL NEGATIVE-EDGE-TRIGGERED J-K FLIP-FLOP
WITH CLEAR AND PRESET
SDFS048A – D2932, MARCH 1987 – REVISED OCTOBER 1993
2–3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
recommended operating conditions
MIN NOM MAX UNIT
V
CC
Supply voltage 4.5 5 5.5 V
V
IH
High-level input voltage 2 V
V
IL
Low-level input voltage 0.8 V
I
IK
Input clamp current –18 mA
I
OH
High-level output current –1 mA
I
OL
Low-level output current 20 mA
T
A
Operating free-air temperature 0 70 °C
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP
MAX UNIT
V
IK
V
CC
= 4.5 V, I
I
= –18 mA 1.2 V
V
OH
V
CC
= 4.5 V, I
OH
= – 1 mA 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 V
I
I
V
CC
= 5.5 V, V
I
= 7 V 0.1 mA
I
IH
V
CC
= 5.5 V, V
I
= 2.7 V 20 µA
J or K – 0.6
I
IL
PRE or CLR
V
CC
= 5.5 V, V
I
= 0.5 V
–3
mA
CLK – 2.4
I
OS
V
CC
= 5.5 V, V
O
= 0 –60 –150 mA
I
CC
V
CC
= 5.5 V, See Note 2 12 19 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 all outputs open, the Q and Q
outputs alternately high and the clock input grounded at the time of measurement.
timing requirements over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted)
V
CC
= 5 V,
T
A
= 25°C
MIN MAX UNIT
MIN MAX
f
clock
Clock frequency 0 110 0 100 MHz
t
Pulse duration
CLK high or low 4.5 5
ns
t
w
P
u
lse
d
u
ration
CLR or PRE low 4.5 5
ns
t
Setu
p
time data before CLK
High 4 5
ns
t
su
Set
u
p
time
,
data
before
CLK
Low 3 3.5
ns
t
h
Hold time data after CLK
High 0 0
ns
t
h
Hold
time
,
data
after
CLK
Low 0 0
ns
t
su
Setup time, inactive state, data before CLK
§
CLR or PRE high 4 5 ns
§
Inactive-state state setup time is also referred to as recovery time.