Select True or Complementary Data
Perform AND/NAND (Masking) of
A or B Operand
Cascadable to Expand Number of
Operands
Detect Zeros on A or B Operands
3-State Outputs Interface Directly With
System Bus
Package Options Include Plastic
Small-Outline (DW) Packages, Ceramic
Chip Carriers (FK), and Standard Plastic
(NT) and Ceramic (JT) 300-mil DIPs

description
The 4ALS857 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
4ALS857 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.
The SN54ALS857 is characterized for operation over the full military temperature range of –55°C to 125°C. The
SN74ALS857 is characterized for operation from 0°C to 70°C.