Datasheet

54ACT16543, 74ACT16543
16-BIT REGISTERED TRANSCEIVERS
WITH 3-STATE OUTPUTS
SCAS126B – MARCH 1990 – REVISED APRIL 1996
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
FUNCTION TABLE
(each octal register)
INPUTS
LATCH
STATUS
OUTPUT
BUFFERS
CEAB LEAB OEAB
STATUS
A TO B
†
BUFFERS
B1–B8
H X X Storing Z
X H X Storing
X XH Z
L L L Transparent Current A data
L H L Storing Previous A data
†
A-to-B data flow is shown: B-to-A flow control is the same except that
it uses CEBA
, LEBA, and OEBA.
‡
Data present before low-to-high transition of LEAB
occurring while
CEAB
is low