SN54ALS857, SN74ALS857
HEX 2-TO-1 UNIVERSAL MULTIPLEXERS
WITH 3-STATE OUTPUTS
SDAS170A – DECEMBER 1982 – REVISED JANUARY 1995 description
The ′ALS857 are hextuple 2-line to 1-line
multiplexers with 3-state outputs. The devices can
provide either true (COMP low) or inverted
(COMP high) data at the Y outputs. In addition, the
′ALS857 perform the logical AND function (A B)
and the clear function as well. The four modes of
operation are: Select A-data inputs
Select B-data inputs
AND A inputs with B inputs
Clear In either of the first two modes, OPER = 0 is high
if all the selected A or B inputs are low. The six Y
outputs and the OPER = 0 output are all 3-state
and rated at 12-mA and 24-mA IOL for the
SN54ALS857 and SN74ALS857, respectively. All
outputs can be placed in the high-impedance state
by applying a high level to the COMP, S0, and S1
inputs simultaneously. SN54ALS857 . JT PACKAGE
SN74ALS857 . DW OR NT PACKAGE
(TOP VIEW) S0 …
