Datasheet

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SN74ALVCH16270
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
SCES028G – JULY 1995 – REVISED AUGUST 2004
FUNCTION TABLES
line space
OUTPUT ENABLE
INPUTS OUTPUTS
CLK OEA OEB A 1B, 2B
↑ H H Z Z
↑ H L Z Active
↑ L H Active Z
↑ L L Active Active
A-TO-B STORAGE (OEB = L)
INPUTS OUTPUTS
CLKENA1 CLKENA2 CLK A 1B 2B
L H X X 1B
0
(1)
2B
0
(1)
L H X X 1B
0
(1)
2B
0
(1)
L L ↑ L L
(2)
L
L L ↑ H H
(2)
H
H L ↑ L 1B
0
(1)
L
H L ↑ H 1B
0
(1)
H
H H X X 1B
0
(1)
2B
0
(1)
(1) Output level before the indicated steady-state input conditions were
established
(2) Two CLK edges are needed to propagate data.
B-TO-A STORAGE (OEA = L)
INPUTS
OUTPUT
A
CLKEN1B CLKEN2B CLK SEL 1B 2B
H X X H X X A
0
(1)
X H X L X X A
0
(1)
L X ↑ H L X L
L X ↑ H H X H
X L ↑ L X L L
X L ↑ L X H H
(1) Output level before the indicated steady-state input conditions were established
2