SNJ54ALS857JT中文资料德州仪器数据手册PDF规格书

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.