SLS SL74HC109D, SL74HC109N Datasheet

SL74HC109

Semiconductor

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
are available from each flip-flop.

•

Outputs Directly Interface to CMOS, NMOS, and TTL

•

Operating Voltage Range: 2.0 to 6.0 V

•

Low Input Current: 1.0 µA

•

High Noise Immunity Characteristic of CMOS Devices

LOGIC DIAGRAM

ORDERING INFORMATION

SL74HC109N Plastic

SL74HC109D SOIC

TA = -55° to 125° C for all packages

PIN ASSIGNMENT

PIN 16=V CC

PIN 8 = GND

FUNCTION TABLE

Inputs Outputs

Set Reset Clock J K Q Q

L H X X X H L

H L X X X L H

L L X X X H* H*
H H L L L H
H H H L Toggle
H H L H No Change
H H H H H L
H H L X X No Change

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.

SLS

System Logic

SL74HC109

Semiconductor

MAXIMUM RATINGS*

Symbol Parameter Value Unit

V CC DC Supply Voltage (Referenced to GND) -0.5 to +7.0 V
V IN DC Input Voltage (Referenced to GND) -1.5 to V CC +1.5 V

V OUT DC Output Voltage (Referenced to GND) -0.5 to V CC +0.5 V

IIN DC Input Current, per Pin

IOUT DC Output Current, per Pin

ICC DC Supply Current, V CC and GND Pins

±

20 mA

±

25 mA

±

50 mA

PD Power Dissipation in Still Air, Plastic DIP+

SOIC Package+

750
500

Tstg Storage Temperature -65 to +150

TL Lead Temperature, 1 mm from Case for 10 Seconds

260

(Plastic DIP or SOIC Package)

*

Maximum Ratings are those values beyond which damage to the device may occur.
Functional operation should be restricted to the Recommended Operating Conditions.
+Derating - Plastic DIP: - 10 mW/°C from 65° to 125°C

SOIC Package: : - 7 mW/°C from 65° to 125°C

RECOMMENDED OPERATING CONDITIONS

Symbol Parameter Min Max Unit

V CC DC Supply Voltage (Referenced to GND) 2.0 6.0 V

V IN, VOUT DC Input Voltage, Output Voltage (Referenced to GND) 0 V CC V

TA Operating Temperature, All Package Types -55 +125

tr, tf Input Rise and Fall Time (Figure 1) V CC =2.0 V

V CC =4.5 V
V CC =6.0 V

0

1000
0
0

500
400

mW

°

C

°

C

°

C

ns

This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum rated
voltages to this high-impedance circuit. For proper operation, VIN and VOUT should be constrained to the range
GND≤(V IN or VOUT)≤V CC.

Unused inputs must always be tied to an appropriate logic voltage level (e.g., either GND or VCC).
Unused outputs must be left open.

System Logic

SLS