74LVC245A(2004) Просмотр технического описания (PDF) - STMicroelectronics

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производитель

74LVC245A
(Rev.:2004)

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

STMicroelectronics 

74LVC245A

Figure 2: Input And Output Equivalent Circuit

Table 2: Pin Description

Table 3: Truth Table

PIN N°

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

Table 4: Absolute Maximum Ratings

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

Symbol

Parameter

VCC Supply Voltage

VI

DC Input Voltage

VO

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

VO

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

IIK

DC Input Diode Current

IOK

DC Output Diode Current (note 2)

IO

DC Output Current

ICC or IGND DC VCC or Ground Current per Supply Pin

Tstg Storage Temperature

TL

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

-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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