SL74HC109
Dual J-K Flip-Flop with Set and Reset
High-Performance Silicon-Gate CMOS
The SL74HC109 is identical in pinout to the LS/ALS109. The device
inputs are compatible with standard CMOS outputs, with pullup
resistors, they are compatible with LS/ALSTTL outputs.
This device consists of two J-K flip-flops with individual set, reset,
and clock inputs. Changes at the inputs are reflected at the outputs
with the next low-to-high transition of the clock. Both Q to Q outputs
ORDERING INFORMATION
are available from each flip-flop.
SL74HC109N Plastic
SL74HC109D SOIC
·
Outputs Directly Interface to CMOS, NMOS, and TTL
·
Operating Voltage Range: 2.0 to 6.0 V
°
°
T
A
= -55 to 125 C for all packages
·
·
m
Low Input Current: 1.0 A
High Noise Immunity Characteristic of CMOS Devices
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
Outputs
Set
L
Reset
H
Clock
X
J
K
X
X
X
L
Q
Q
L
X
X
X
L
H
L
H*
H
L
L
X
H
H*
H
L
X
H
H
H
H
H
H
L
H
H
L
L
Toggle
No Change
H
H
H
X
H
H
X
H
L
PIN 16=VCC
H
L
No Change
PIN 8 = GND
X = Don’t care
*Both outputs will remain high as long as Set and
Reset are low, but the output states are
unpredictable if Set and Reset go high
simultaneously.
System Logic
Semiconductor
SLS