M54HCT273

M74HCT273

February 1993

OCTAL D TYPE FLIP FLOP WITH CLEAR

B1R

(Plastic Package)

ORDER CODES :

M54HCT273F1R

M74HCT273M1R

M74HCT273B1R

M74HCT273C1R

F1R

(Ceramic Package)

M1R

(Micro Package)

C1R

(Chip Carrier)

PIN CONNECTIONS (top view)

NC =

No Internal

Connection

.

HIGH SPEED

.

LOW POWER DISSIPATION

.

COMPATIBLE WITH TTL OUTPUTS

.

OUTPUT DRIVE CAPABILITY

10 LSTTL LOADS

.

SYMMETRICAL OUTPUT IMPEDANCE

.

BALANCED PROPAGATION DELAYS

.

PIN AND FUNCTION COMPATIBLE WITH

54/74LS273

The M54/74HCT273 is a high speed CMOS OCTAL

D-TYPE FLIP FLOP WITH CLEAR fabricated in sili-

con gate C

speed performance of LSTTL combined with true

CMOS low power consumption. Information signals

applied to D inputs are transferred to the Q outputs

on the positive-going edge of the clock pulse.

When the CLEAR input is held low, the Q output are

in the low logic level independent of the other inputs.

All inputs are equipped with protection circuits

against static discharge and transient excess volt-

age. This integrated circuit has input and output

characteristics that are fully compatible with 54/74

LSTTL logic families. M54/74HCT devices are de-

signed to directly interface HSC

TTL and NMOS components. They are also plug in

replacements for LSTTL devices giving a reduction

of power consumption. All inputs are equipped with

protection circuits against static discharge and tran-

sient excess voltage.

DESCRIPTION

INPUT AND OUTPUT EQUIVALENT CIRCUIT

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