? 3-State Versions of SN54F151B and

SN74F151B

? 3-State Outputs Interface Directly With

System Bus

? Performs Parallel-to-Serial Conversion

? Complementary Outputs Provide True and

Inverted Data

? Package Options Include Plastic

Small-Outline Packages, Ceramic Chip

Carriers, and Standard Plastic and Ceramic

300-mil DIPs

description

These data selectors/multiplexers contain full

binary decoding to select one of eight data

sources and feature strobe-controlled

complementary outputs. The 3-state outputs can

interface with and drive data lines of busorganized

systems. When the strobe (G) input is

high, both outputs are in a high-impedance state

in which both the upper and lower transistors of

each totem-pole output are off, and the output

neither drives nor loads the bus significantly.

The SN54F251B is characterized for operation

over the full military temperature range of ?55°C

to 125°C. The SN74F251B is characterized for

operation from 0°C to 70°C.