74LVC245A データシートの表示（PDF） - STMicroelectronics

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74LVC245A

LOW VOLTAGE CMOS OCTAL BUS TRANSCEIVER (NOT INVERTED) HIGH PERFORMANCE

STMicroelectronics 

74LVC245A

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

PIN No

1

2, 3, 4, 5, 6,

7, 8, 9

18, 17, 16,

15, 14, 13,

12, 11

19

10

20

SYMBOL

DIR

A1 to A8

NAME AND FUNCTION

Directional Control

Data Inputs/Outputs

B1 to B8 Data Inputs/Outputs

G

GND

VCC

Output Enable Input

Ground (0V)

Positive Supply Voltage

INPUTS

G

DIR

L

L

L

H

H

X

X : Don’t Care

Z : High Impedance

FUNCTION

OUTPUT

A BUS B BUS

OUTPUT INPUT

INPUT OUTPUT

Z

Z

Yn

A=B

B=A

Z

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

VCC Supply Voltage

-0.5 to +7.0

V

VI

DC Input Voltage

-0.5 to +7.0

V

VO

DC Output Voltage (High Impedance or VCC = 0V)

-0.5 to +7.0

V

VO

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

-0.5 to VCC + 0.5

V

IIK

DC Input Diode Current

- 50

mA

IOK

DC Output Diode Current (note 2)

- 50

mA

IO

DC Output Current

± 50

mA

ICC or IGND DC VCC or Ground Current per Supply Pin

± 100

mA

Tstg Storage Temperature

-65 to +150

°C

TL

Lead Temperature (10 sec)

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

2/9

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