74LCX240 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

74LCX240

LOW VOLTAGE CMOS OCTAL BUS BUFFER (3-STATE INV.) WITH 5V TOLERANT INPUTS AND OUTPUTS

STMicroelectronics 

74LCX240

Figure 2: Input And Output Equivalent Circuit

Table 2: Pin Description

Table 3: Truth Table

PIN N°

1

2, 4, 6, 8

9, 7, 5, 3

11, 13, 15,

17

18, 16, 14,

12

19

10

20

SYMBOL NAME AND FUNCTION

1G

1A1 to 1A4

2Y1 to 2Y4

2A1 to 2A4

Output Enable Input

Data Inputs

Data Outputs

Data Inputs

1Y1 to 1Y4 Data Outputs

2G

GND

VCC

Output Enable Input

Ground (0V)

Positive Supply Voltage

Table 4: Absolute Maximum Ratings

INPUT

G

An

L

L

L

H

H

X

X : Don’t Care

Z : High Impedance

OUTPUT

Yn

H

L

Z

Symbol

VCC

VI

VO

VO

IIK

IOK

IO

ICC

IGND

Tstg

TL

Parameter

Supply Voltage

DC Input Voltage

DC Output Voltage (OFF State)

DC Output Voltage (High or Low State) (note 1)

DC Input Diode Current

DC Output Diode Current (note 2)

DC Output Current

DC Supply Current per Supply Pin

DC Ground Current per Supply Pin

Storage Temperature

Lead Temperature (10 sec)

Value

Unit

-0.5 to +7.0

V

-0.5 to +7.0

V

-0.5 to +7.0

V

-0.5 to VCC + 0.5

V

- 50

mA

- 50

mA

± 50

mA

± 100

mA

± 100

mA

-65 to +150

°C

300

°C

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is

not implied

1) IO absolute maximum rating must be observed

2) VO < GND

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