SN74LVC543A

OCTAL REGISTERED TRANSCEIVER

WITH 3STATE OUTPUTS

SCAS299H − JANUARY 1993 − REVISED AUGUST 2003

2

POST OFFICE BOX 655303

FUNCTION TABLE†

INPUTS

OUTPUT

CEAB

LEAB

OEAB

A

OUTPUT

B

H

X

X

X

Z

X

XH

X

Z

L

HL

X

B0‡

L

LL

L

L

L

L

L

H

H

† A-to-B data flow is shown; B-to-A flow control is the

same, except that it uses CEBA, LEBA, and

OEBA.

‡ Output level before the indicated steady-state

input conditions were established

logic diagram (positive logic)

OEBA

CEBA

LEBA

OEAB

CEAB

LEAB

A1

B1

To Seven Other Channels

2

23

1

13

11

14

3

22

C1

1D

C1

1D