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M74AC574B

OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT NON INVERTING

STMicroelectronics 

®

74AC574

OCTAL D-TYPE FLIP FLOP

WITH 3 STATE OUTPUT NON INVERTING

s HIGH SPEED:

fMAX = 220 MHz (TYP.) at VCC = 5V

s LOW POWER DISSIPATION:

ICC = 8 µA (MAX.) at TA = 25 oC

s HIGH NOISE IMMUNITY:

VNIH = VNIL = 28% VCC (MIN.)

s 50Ω TRANSMISSION LINE DRIVING

CAPABILITY

s SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 24 mA (MIN)

s BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s OPERATING VOLTAGE RANGE:

VCC (OPR) = 2V to 6V

s PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 574

s IMPROVED LATCH-UP IMMUNITY

DESCRIPTION

The AC574 is an advanced high-speed CMOS

OCTAL D-TYPE FLIP FLOP with 3 STATE

OUTPUT NON INVERTING fabricated with

sub-micron silicon gate and double-layer metal

wiring C2MOS technology.

These 8 bit D-Type flip-flops are controlled by a

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

On the positive transition of the clock, the Q

DIP

SOP

TSSOP

PACKAGE

DIP

SOP

TSSOP

ORDER CODES

T UB E

T&R

M74AC574B

M74AC574M M74AC574MTR

M74AC574TTR

outputs will be set to logic state 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)

and while high level the outputs will be in a high

impedance state.

The output control does not affect the internal

operation of flip flop; 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.

PIN CONNECTION AND IEC LOGIC SYMBOLS

February 2000

1/11

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