SL74HC273

System Logic

Semiconductor

SLS

Octal D Flip-Flop with Common Clock and Reset

High-Performance Silicon-Gate CMOS

The SL74HC273 is identical in pinout to the LS/ALS273. The device

inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

This device consists of eight D flip-flops with common Clock and

Reset inputs. Each flip-flop is loaded with a low-to-high transition of

the Clock input. Reset is asynchronous and active low.

• 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

ORDERING INFORMATION

SL74HC273N Plastic

SL74HC273D SOIC

° to 125° C for all packages

FUNCTION TABLE

Inputs

Output

Reset

Clock

D

Q

L

X

X

L

H

H

H

H

L

L

H

L

X

no change

H

X

no change

X = don’t care

LOGIC DIAGRAM

PIN 10 = GND

PIN ASSIGNMENT