General Description
These data selectors/multiplexers contain full on-chip
binary decoding to select one-of-eight data sources, and
feature a strobe-controlled 3-STATE output. The strobe
must be at a low logic level to enable these devices. The 3-
STATE outputs permit direct connection to a common bus.
When the strobe input is HIGH, both outputs are in a highimpedance
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. When the strobe
is LOW, the outputs are activated and operate as standard
TTL totem-pole outputs.
To minimize the possibility that two outputs will attempt to
take a common bus to opposite logic levels, the output control
circuitry is designed so that the average output disable
time is shorter than the average output enable time.

Features
n 3-STATE version of DM74LS151
n Interface directly with system bus
n Perform parallel-to-serial conversion
n Permit multiplexing from N-lines to one line
n Complementary outputs provide true and inverted data
n Maximum number of common outputs: 129
n Typical propagation delay time (D to Y): 17 ns
n Typical power dissipation: 35 mW