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SNx4HCT273 Octal D-Type Flip-Flops With Clear

1 Features

•Operating voltage range of 4.5 V to 5.5 V

•Outputs can drive up to 10 LSTTL loads

•Low power consumption, 80 µA maximum ICC

•Typical tpd = 12 ns

•±4 mA output drive at 5 V

•Low input current of 1 µA maximum

•Inputs are TTL-voltage compatible

•Contain eight D-type flip-flops

•Direct clear input

2 Applications

•Buffer or storage registers

•Shift registers

•Pattern generators

3 Description

These devices are positive-edge-triggered D-type flip-

flops with a common enable input. The ’HCT273

devices are similar to the ’HCT377 devices, but

feature a common clear enable (CLR) input instead

of a latched clock.

Device Information(1)

PART NUMBERPACKAGEBODY SIZE (NOM)

SN74HCT273DWSOIC (20)12.80 mm × 7.50 mm

SN74HCT273DBSSOP (20)7.20 mm × 5.30 mm

SN74HCT273NPDIP (20)25.40 mm × 6.35 mm

SN74HCT273NSSO (20)15.00 mm × 5.30 mm

SN74HCT273PWTSSOP (20)6.50 mm × 4.40 mm

(1)For all available packages, see the orderable addendum at

the end of the data sheet.

Logic Diagram, (postive logic)

Logic Diagram, Each Flip Flop (positive logic)

SN54HCT273, SN74HCT273

SCLS068F – NOVEMBER 1988 – REVISED FEBRUARY 2022

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

Produktspecifikationer