SN54ALS109A, SN54AS109A, SN74ALS109A, SN74AS109A
DUAL J-K
POSITIVE-EDGE-TRIGGERED FLIP-FLOPS
WITH CLEAR AND PRESET
SDAS198B – APRIL 1982 – REVISED AUGUST 1995
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
†
Supply voltage, V
CC
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, V
I
7 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, T
A
: SN54AS109A –55°C to 125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SN74AS109A 0°C to 70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range –65°C to 150°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
recommended operating conditions
SN54AS109A SN74AS109A
MIN NOM MAX MIN NOM MAX
V
CC
Supply voltage 4.5 5 5.5 4.5 5 5.5 V
V
IH
High-level input voltage 2 2 V
V
IL
Low-level input voltage 0.8 0.8 V
I
OH
High-level output current –2 –2 mA
I
OL
Low-level output current 20 20 mA
f
clock
* Clock frequency 0 90 0 105 MHz
PRE or CLR low 4 4
t
w
* Pulse duration
CLK high
4 4
ns
CLK low 5.5 5.5
*
Data 5.5 5.5
su
etup t
me
e
ore
PRE or CLR inactive 2 2
t
h
* Hold time after CLK↑ Data 0 0 ns
T
A
Operating free-air temperature –55 125 0 70 °C
* On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested.
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
SN54AS109A SN74AS109A
MIN TYP
‡
MAX MIN TYP
‡
MAX
V
IK
V
CC
= 4.5 V, I
I
= –18 mA –1.2 –1.2 V
V
OH
V
CC
= 4.5 V to 5.5 V, I
OH
= –2 mA V
CC
–2 V
CC
–2 V
V
OL
V
CC
= 4.5 V, I
OL
= 20 mA 0.25 0.5 0.25 0.5 V
I
I
V
CC
= 5.5 V, V
I
= 7 V 0.1 0.1 mA
CLK, J, or K
20 20
IH
PRE or CLR
CC
=
.
,
I
=
.
40 40
µ
CLK, J, or K
–0.5 –0.5
IL
PRE or CLR
CC
=
.
,
I
=
.
–1.8 –1.8
I
O
§
V
CC
= 5.5 V, V
O
= 2.25 V –30 –112 –30 –112 mA
I
CC
V
CC
= 5.5 V, See Note 1 11.5 17 11.5 17 mA
‡
All typical values are at V
CC
= 5 V, T
A
= 25°C.
§
The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, I
OS
.
NOTE 1: I
CC
is measured with J, K
, CLK, and PRE grounded, then with J, K, CLK, and CLR grounded.
