3-State Versions of the ′ALS153 and

SN74AS153

Permits Multiplexing From n Lines to

One Line

Performs Parallel-to-Serial Conversion

Package Options Include Plastic

Small-Outline (D) Packages, Ceramic Chip

Carriers (FK), and Standard Plastic (N) and

Ceramic (J) 300-mil DIPs

description

These data selectors/multiplexers contain

inverters and drivers to supply full binary decoding

data selection to the AND-OR gates. Separate

output control inputs are provided for each of the

two 4-line sections.

The 3-state outputs can interface with and drive

data lines of bus-organized systems. With all but

one of the common outputs disabled (at a

high-impedance state), the low impedance of the

single enabled output drives the bus line to a high

or low logic level. Each output has its own

output-enable (OE) input. The output is disabled

when OE is high.

The SN54ALS253 is characterized for operation

over the full military temperature range of −55°C

to 125°C. The SN74ALS253 and SN74AS253A

are characterized for operation from 0°C to 70°C.