MB2652 Datasheet, PDF (4/15 Pages) NXP Semiconductors – Dual octal transceiver/registers, non-inverting 3-State

Philips Semiconductors Products
Dual octal transceiver/registers,
non-inverting (3-State)
Product specification
MB2652
The following examples demonstrate the four
fundamental bus-management functions that
can be performed with the MB2652.The
select pins determine whether data is stored
or transferred through the device in real
time.The output enable pins determine the
direction of the data flow.
REAL TIME BUS TRANSFER
BUS B TO BUS A
REAL TIME BUS TRANSFER
BUS A TO BUS B
STORAGE FROM
A, B, OR A AND B
A
B
A
B
A
B
nOEAB nOEBA nCPAB nCPBA nSAB nSBA
L
L
X
X
XL
nOEAB nOEBA nCPAB nCPBA nSAB nSBA
H
H
X
X
LX
TRANSFER STORED DATA
TO A OR B
nOEAB nOEBA nCPAB nCPBA nSAB nSBA
X
H
↑
X
XX
L
X
X
↑
XX
L
H
↑
↑
XX
August 23, 1993
A
B
nOEAB nOEBA nCPAB nCPBA nSAB nSBA
H
L H|L H|L H H
4