Datasheet > U74HCT540

U74HCT540

更新时间： 2024-11-29 17:02:07

品牌	Logo	应用领域
友顺 - UTC		/
页数	文件大小	规格书
5页	199K
描述
-0.5V

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数据手册

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U74HCT540 数据手册

UNISONIC TECHNOLOGIES CO., LTD

U74HCT540

Preliminary

CMOS IC

OCTAL BUFFERS AND LINE

DRIVERS WITH 3-STATE

OUTPUTS



DESCRIPTION

The UTC U74HCT540 contains octal buffers and line drivers.

There are designed to have the performance of the ’HCT240 devices

and a pinout with inputs and outputs on opposite sides of the

package. This arrangement greatly facilitates printed circuit board

layout.

The 3-state control gate is

a 2-input NOR. If either

output-enable ( OE1 or OE2 ) input is high, all eight outputs are in

the high-impedance state. The U74HCT540 devices provide inverted

data at the outputs.

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

down, OE should be tied to V_CCthrough a pull-up resistor; the

minimum value of the resistor is determined by the current-sinking

capability of the driver.



FEATURES

* Operation Voltage Range: 4.5V~5.5V

* Low Power Consumption, 80µA Max. I_CC

* Typical t_pd=12ns

*±6mA Output Drive at 5V

* Low Input Current of 1µA Max

* Inputs Are TTL Voltage Compatible

* High-Current 3-State Outputs Interface Directly With System Bus or

Can Drive Up To 15 LSTTL Loads

* Data Flow-Through Pinout (All Inputs on Opposite Side From

Outputs)

 ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

U74HCT540L-S20-R

U74HCT540L-P20-R

U74HCT540G-S20-R

U74HCT540G-P20-R

SOP-20

Tape Reel

TSSOP-20

www.unisonic.com.tw

1 of 5

QW-R502-C100.a

12 3 4 5

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