74LVC543AD Просмотр технического описания (PDF) - Philips Electronics
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74LVC543AD Datasheet PDF : 12 Pages
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Philips Semiconductors
Octal D-type registered transceiver (3-State)
Product specification
74LVC543A
LOGIC DIAGRAM
OEBA
EBA
LEBA
OEAB
EAB
LEAB
LE
D
An
Bn
LE
D
8 IDENTICAL
CHANNELS
TO 7 OTHER CHANNELS
SW00215
FUNCTION TABLE
OPERATING MODES
Disabled
OEXX
H
INPUTS
EXX
LEXX
X
X
DATA
X
Disabled
X
H
X
X
Disabled + Latch
L
↑
L
h
L
↑
L
l
Latch + Display
L
L
↑
h
L
L
↑
l
Transparent
L
L
L
H
L
L
L
L
Hold
(do nothing)
L
L
H
X
NOTES:
XX =
H=
L=
h=
l=
X=
↑=
NC =
Z=
AB for A-to-B direction, BA for B-to-A direction
High voltage level
Low voltage level
High state must be present one setup time before the Low-to-High transition of LEAB, LEBA, EAB, EBA
Low state must be present one setup time before the Low-to-High transition of LEAB, LEBA, EAB, EBA
Don’t care
Low-to-High level transition
No change
High impedance OFF state
OUTPUTS
Z
Z
Z
Z
H
L
H
L
NC
1998 Jul 31
4
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