74VHC574 datasheet(1/14 Pages) STMICROELECTRONICS

Part #	74VHC574

Description	OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUTS NON INVERTING

PDF	14 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

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November 2004

s

HIGH SPEED:

s

fMAX = 180 MHz (TYP.) at VCC = 5V

s

LOW POWER DISSIPATION:

ICC = 4 µA (MAX.) at TA=25°C

s

HIGH NOISE IMMUNITY:

VNIH = VNIL = 28% VCC (MIN.)

s

POWER DOWN PROTECTION ON INPUTS

s

SYMMETRICAL OUTPUT IMPEDANCE:

|IOH| = IOL = 8 mA (MIN)

s

BALANCED PROPAGATION DELAYS:

tPLH ≅ tPHL

s

OPERATING VOLTAGE RANGE:

VCC(OPR) = 2V to 5.5V

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PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 574

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IMPROVED LATCH-UP IMMUNITY

s

LOW NOISE: VOLP = 0.9V (MAX.)

DESCRIPTION

The 74VHC574 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

wiring C2MOS technology.

These 8 bit D-Type flip-flop is 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 states 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.

Power down protection is provided on all inputs

and 0 to 7V can be accepted on inputs with no

regard to the supply voltage. This device can be

used to interface 5V to 3V.

All

inputs

and

outputs

are

equipped

with

protection circuits against static discharge, giving

them 2KV ESD immunity and transient excess

voltage.

74VHC574

OCTAL D-TYPE FLIP FLOP

WITH 3 STATE OUTPUTS NON INVERTING

Figure 1: Pin Connection And IEC Logic Symbols

Table 1: Order Codes

PACKAGE

T & R

SOP

74VHC574MTR

TSSOP

74VHC574TTR

TSSOP

SOP

Rev. 4

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