Datasheet

SN54HC652, SN74HC652
OCTAL BUS TRANSCEIVERS AND REGISTERS
WITH 3-STATE OUTPUTS
SCLS151E – DECEMBER 1982 – REVISED MARCH 2003
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
BUS B
BUS A
BUS B
BUS A
BUS B
BUS A
BUS B
BUS A
OEAB
X
L
L
OEAB
LL
CLKAB
X
CLKBA
X
SAB
X
SBA
L
CLKAB
X
CLKBA
X
SAB
L
SBA
X
H
CLKAB CLKBA
X
SAB
X
SBA
X
CLKAB CLKBA SAB SBA
X
H
XX
X
X
X
H L H or L H H
↑
↑
↑↑
OEBA
OEBA
HH
OEAB OEBA
OEAB OEBA
H or L
REAL-TIME TRANSFER
BUS B TO BUS A
REAL-TIME TRANSFER
BUS A TO BUS B
STORAGE FROM
A, B, OR A AND B
TRANSFER STORED DATA
TO A AND/OR B
3 21 1 23 2 22 1 23 2 22321
3 21 23 2 22 3 21 1 2 22
1
23
Pin numbers shown are for the DW, JT, NT, and W packages.
Figure 1. Bus-Management Functions