HD74ALVCH16270 Datasheet, PDF (2/13 Pages) Hitachi Semiconductor – 12-bit to 24-bit Registered Bus Exchanger with 3-state Outputs

HD74ALVCH16270
Function Table
Inputs
CLK
↑
↑
↑
↑
OEA
H
H
L
L
OEB
H
L
H
L
Outputs
A
Z
Z
Active
Active
Output enable
1B, 2B
Z
Active
Z
Active
Inputs
CLKENA1
L
L
L
L
H
H
H
CLKENA2
H
H
L
L
L
L
H
CLK
↑
↑
↑
↑
↑
↑
X
Outputs
A
1B
L
L ^*2
H
H ^*2
L
L ^*2
H
H ^*2
L
1B₀ ^*1
H
1B₀ ^*1
X
1B₀ ^*1
A-to-B storage (OEB = L)
2B
2B₀ ^*1
2B₀ ^*1
L
H
L
H
2B₀ ^*1
Inputs
CLKEN1B CLKEN2B CLK
SEL
1B
2B
H
X
X
H
X
X
X
H
X
L
X
X
L
X
↑
H
L
X
L
X
↑
H
H
X
X
L
↑
L
X
L
X
L
↑
L
X
H
B-to-A storage (OEA = L)
Output A
A₀ ^*1
A₀ ^*1
L
H
L
H
H : High level
L : Low level
X : Immaterial
Z : High impedance
↑ : Low to high transition
Notes: 1. Output level before the indicated steady state input conditions were established.
2. Two CLK edges are needed to propagate data.