Datasheet

SN74FB2033K
8-BIT TTL/BTL REGISTERED TRANSCEIVER
SCBS472G – MAY 1994 – REVISED SEPTEMBER 2001
5–53
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Function Tables
FUNCTION
INPUTS
OEA OEB OEB OMODE1 OMODE0 IMODE1 IMODE0 LOOPBACK
FUNCTION/MODE
L L X X X X X X
L XH X X X X X
Isolation
X H L L L X X X AI to B, buffer mode
X H L L H X X X AI to B, flip-flop mode
X H L H X X X X AI to B, latch mode
H L X X X L L L
H XH X X L L L
B to AO, buffer mode
H L X X X L H L
H XH X X L H L
B to AO, flip-flop mode
H L X X X H X L
H XH X X H X L
B to AO, latch mode
H L X X X L L H
H XH X X L L H
AI to AO, buffer mode
H L X X X L H H
H XH X X L H H
AI to AO, flip-flop mode
H L X X X H X H
H XH X X H X H
AI to AO, latch mode
H H L X X X X L AI to B, B to AO
ENABLE/DISABLE
INPUTS OUTPUTS
OEA OEB OEB AO B
L X X Hi Z
H X X Active
X LL Inactive (H)
X LH Inactive (H)
X HL Active
X H H Inactive (H)
BUFFER
INPUT OUTPUT
L H
H L
LATCH
INPUTS
CLK/LE DATA
OUTPUT
H L H
H HL
L X Q
0