Philips Semiconductors

Product specification

74ALVT16543

2.5V/3.3V 16-bit registered transceiver (3-State)

1998 Feb 13

4

LOGIC DIAGRAM

D

LE

Q

D

LE

Q

DETAIL A

nB0

nB1

nA1

nB2

nA2

nB3

nA3

nB4

nA4

nB5

nA5

nB6

nA6

nB7

nA7

DETAIL A X 7

nOEAB

nEAB

nLEAB

nOEBA

nEBA

nLEBA

nA0

SH00039

FUNCTION TABLE

INPUTS

OUTPUTS

STATUS

nOEXX

nEXX

nLEXX

nAx or nBx

nBx or nAx

STATUS

H

X

X

X

Z

Disabled

X

H

X

X

Z

Disabled

L

L

↑

↑

L

L

h

l

Z

Z

Disabled + Latch

L

L

L

L

↑

↑

h

l

H

L

Latch + Display

L

L

L

L

L

L

H

L

H

L

Transparent

L

L

H

X

NC

Hold

H = High voltage level

h

= High voltage level one set-up time prior to the Low-to-High transition of nLEXX or nEXX (XX = AB or BA)

L

= Low voltage level

l

= Low voltage level one set-up time prior to the Low-to-High transition of nLEXX or nEXX (XX = AB or BA)

X = Don’t care

↑ = Low-to-High transition of nLEXX or nEXX (XX = AB or BA)

NC= No change

Z = High impedance or “off ” state