UNISONIC TECHNOLOGIES CO., LTD

U74LVC563

CMOS IC

www.unisonic.com.tw

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Copyright © 2011 Unisonic Technologies Co., Ltd

QW-R502-681.A

OCTAL TRANSPARENT D-TYPE

LATCHES WITH 3-STATE OUTPUTS

DESCRIPTION

The U74LVC563 is a octal transparent D-TYPE latches with 3-state

outputs. When the latch-enable (LE) is high, the Q outputs follow the

complements of the D inputs. When LE is low, the Q outputs are latched at

the inverses of the levels set up at the D inputs.

When the output-enable ( OE ) input is high, the Q outputs are in a

high-impedance state, and the outputs neither load nor drive the bus lines.

The high-impedance state and increased drive provide the capability to drive

bus lines without interface or pull-up components. While the outputs are in

the high-impedance state, old data can be retained or new data can be

entered, i.e. OE does not affect the internal operations of the latches. When

OE is low, the Q outputs are in a normal logic state (high or low levels).

The U74LVC563 is designed for 1.65V to 3.6V operation. Inputs can be

driven from either 3.3V or 5V devices, so the U74LVC563 can be used in a

mixed 3.3V/5V system environment.

To ensure the high-impedance state during power up or power down,

OE

the resistor is determined by the current-sinking capability of the driver.

FEATURES

* Wide supply voltage range from 1.65V to 3.6V

* Up to 5.5V inputs accept voltages

* ±24mA output driver at 3V

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

U74LVC563L-P20-R

U74LVC563G-P20-R

TSSOP-20

Tape Reel

U74LVC563L-P20-T

U74LVC563G-P20-T

TSSOP-20

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