SN74LS151DR

These monolithic data selectors/multiplexers contain full on-chip binary decoding to select the desired data source. The '150 selects one-of-sixteen data sources; the '151A, 'LS151, and 'S151 select one-of-eight data sources. The '150, '151A, 'LS151, and 'S151 have a strobe input which must be at a low logic level to enable these devices. A high level at the strobe forces the W output high, and the Y output (as applicable) low. The '150 has only an inverted W output: the '151A, 'LS151, and 'S151 feature complementary W and Y outputs. The '151A and '152A incorporate address buffers that have symmetrical propagation delay times through the complementary paths. This reduces the possibility of transients occurring at the output(s) due to changes made at the select inputs, even when the '151A outputs are enabled (i.e., strobe low).

Applications

• Usable as a Boolean function generator
• Multi-channel data selection and multiplexing
• Parallel-to-serial signal conversion

Key features

• Parallel-to-serial conversion
• N-to-1 multiplexing
• Clamping diodes on inputs for simplified system design
• Full compatibility with most TTL circuits
• Strobe input for device operation control
• Complementary outputs available on select models
• Symmetrical propagation delay in address buffers (select models) for reduced output transient risk