SN54BCT652, SN74BCT652
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCBS038A – AUGUST 1989 – REVISED NOVEMBER 1993
BUS B
3
21
OEAB OEBA
L
L
1
23
2
CLKAB CLKBA SAB
X
X
X
22
SBA
L
3
21
OEAB OEBA
H
H
1
CLKAB
X
23
CLKBA
X
2
SAB
L
BUS B
22
SBA
X
REAL-TIME TRANSFER
BUS A TO BUS B
1
CLKAB
L
X
L
23
CLKBA
L
L
X
2
SAB
H
X
H
BUS B
22
SBA
H
H
X
TRANSFER STORED DATA
TO A AND/OR B
BUS A
REAL-TIME TRANSFER
BUS B TO BUS A
BUS B
BUS A
3
OEAB
X
L
L
21
OEBA
H
X
H
1
23
2
CLKAB CLKBA SAB
↑
X
↑
X
↑
↑
X
X
X
22
SBA
X
X
X
3
OEAB
H
L
H
21
OEBA
L
L
H
STORAGE FROM
A, B, OR A AND B
Figure 1. Bus-Management Functions
Pin numbers shown are for the DW, JT, NT, and W packages.
2–2
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
BUS A
BUS A