MC74LCX540_05 datasheet(2/8 Pages) ONSEMI

Part #	MC74LCX540

Description	Low-Voltage CMOS Octal Buffer Flow Through Pinout With 5 V?뭈olerant Inputs and Outputs (3?뭆tate, Inverting)

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Manufacturer	ONSEMI [ON Semiconductor]

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MC74LCX540

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Figure 1. Pinout: 20−Lead (Top View)

19

20

18

17

16

15

14

2

1

34567

VCC

13

8

12

9

11

10

OE2

O0

O1

O2

O3

O4

O5

O6

O7

OE1

D0

D1

D2

D3

D4

D5

D6

D7

GND

Figure 2. LOGIC DIAGRAM

OE1

1

D0

2

O0

18

D1

3

O1

17

D2

4

O2

16

D3

5

O3

15

D4

6

O4

14

D5

7

O5

13

D6

8

O6

12

D7

9

O7

11

OE2

19

PIN NAMES

Function

Output Enable Inputs

Data Inputs

3−State Outputs

Pins

OEn

Dn

On

TRUTH TABLE

INPUTS

OUTPUTS

OE1

OE2

Dn

On

L

H

L

H

L

X

H

X

Z

H

X

Z

H = High Voltage Level

L = Low Voltage Level

Z = High Impedance State

X = High or Low Voltage Level and Transitions are Acceptable

For ICC reasons, DO NOT FLOAT Inputs

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