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DESCRIPTION/ORDERING INFORMATION (CONTINUED)

GQN OR ZQN PACKAGE

(TOP VIEW)

1

2

3

4

A

B

C

D

E

DIR

OE

A1

B1

To Seven Other Channels

1

2

19

18

Pin numbers shown are for the DB, DGV, DW, N, NS, PW, and RGY packages.

SN74LVC245A

OCTAL BUS TRANSCEIVER

WITH 3-STATE OUTPUTS

SCAS218T – JANUARY 1993 – REVISED FEBRUARY 2005

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of this device as a translator in

a mixed 3.3-V/5-V system environment.

preventing damaging current backflow through the device when it is powered down.

TERMINAL ASSIGNMENTS

1

2

3

4

A

A1

DIR

OE

B

A3

B2

A2

B1

C

A5

A4

B4

B3

D

A7

B6

A6

B5

E

GND

A8

B8

B7

FUNCTION TABLE

INPUTS

OPERATION

OE

DIR

L

L

B data to A bus

L

H

A data to B bus

H

X

Isolation

LOGIC DIAGRAM (POSITIVE LOGIC)

2