Datasheet

SN74ALVCH16270
12-BIT TO 24-BIT REGISTERED BUS EXCHANGER
WITH 3-STATE OUTPUTS
SCES028F – JULY 1995 – REVISED FEBRUARY 1999
3–56
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Function Tables
OUTPUT ENABLE
INPUTS
OUTPUTS
CLK OEA OEB A 1B, 2B
↑ H H Z Z
↑ HL ZActive
↑ 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
†
2B
0
†
L HXX1B
0
†
2B
0
†
L L ↑ LL
‡
L
L L ↑ HH
‡
H
H L ↑ L1B
0
†
L
H L ↑ H1B
0
†
H
H H X X 1B
0
†
2B
0
†
†
Output level before the indicated steady-state input
conditions were established
‡
Two CLK edges are needed to propagate data.
B-TO-A STORAGE (OEA
= L)
INPUTS
OUTPUT
CLKEN1B CLKEN2B CLK SEL 1B 2B
A
H X X H X X A
0
†
X HXLXXA
0
†
L X ↑ HLX L
L X ↑ HHX H
X L ↑ LXL L
X L ↑ L X H H
†
Output level before the indicated steady-state input conditions were
established