HD74HC442 Datasheet, PDF (2/12 Pages) Hitachi Semiconductor – Quad. Tridirectional Bus Transceiver(with noninverted/inverted 3-state outputs)

HD74HC442/HD74HC443HD74HC444
Function Table
Inputs
Transfers Between Buses
CS S₁ S₀ GA GB GC HD74HC442
H
X
X
X
X
X
None
HD74HC443
None
X
H
HXX
X None
None
X
X
XHH
H None
None
X
L
L
XH
H None
None
X
L
HHX
H None
None
X
H
L
HH
X None
None
L
L
L XL
L
A → B, A → C
A → B, A → C
L
L
H
L
X
L
B → C, B → A
B → C, B → A
L
HLLL
X C → A, C → B
C → A, C → B
L
L
L XL
H A→B
A→B
L
L
H
HX
L
B→C
B→C
L
H
L
L
H
X
C→A
C→A
L
L
L
X
H
L
A→C
A→C
L
L
H
L
X
H
B→A
B→A
L
H L HL
X C→B
C→B
HD74HC444
None
None
None
None
None
None
A → B, A → C
B → C, B → A
C → A, C → B
A→B
B→C
C→A
A→C
B→A
C→B
2