1/11

April 2001

s

HIGH SPEED:

s

LOW POWER DISSIPATION:

s

HIGH NOISE IMMUNITY:

s

50

Ω TRANSMISSION LINE DRIVING

CAPABILITY

s

SYMMETRICAL OUTPUT IMPEDANCE:

s

BALANCED PROPAGATION DELAYS:

s

OPERATING VOLTAGE RANGE:

s

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 574

s

IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The 74AC574 is an advanced high-speed CMOS

OCTAL D-TYPE FLIP-FLOP with 3 STATE

OUTPUTS NON INVERTING fabricated with

sub-micron silicon gate and double-layer metal

These 8 bit D-Type Flip-Flop are controlled by a

clock input (CK) and an output enable input (OE).

On the positive transition of the clock, the Q

outputs will be set to the logic that were setup at

the D inputs.

While the (OE) input is low, the 8 outputs will be in

a normal logic state (high or low logic level); while

OE is in high level, the outputs will be in a high

impedance state.

The output control does not affect the internal

operation of flip-flops; that is, the old data can be

retained or the new data can be entered even

while the outputs are off.

All

inputs

and

outputs

are

equipped

with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

74AC574

OCTAL D-TYPE FLIP-FLOP

WITH 3 STATE OUTPUTS (NON INVERTED)

PIN CONNECTION AND IEC LOGIC SYMBOLS

ORDER CODES

PACKAGE

TUBE

T & R

DIP

74AC574B

SOP

74AC574M

74AC574MTR

TSSOP

74AC574TTR

TSSOP

DIP

SOP