SN74LS151 8-Line To 1-Line Data Selectors/Multiplexers |

SN74LS151 (ACTIVE) 8-Line To 1-Line Data Selectors/Multiplexers

8-Line To 1-Line Data Selectors/Multiplexers - SN74LS151


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).



  • '150 Selects One-of-Sixteen Data Sources
  • Others Select One-of-Eight Data Sources
  • All Perform Parallel-to-Serial Conversion
  • All Permit Multiplexing from N Lines to One Line
  • Also For Use as Boolean Function Generator
  • Input-Clamping Diodes Simplify System Design
  • Fully Compatible with Most TTL Circuits



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Part number Order Function Technology Family VCC (Min) (V) VCC (Max) (V) Channels (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) Configuration Type IOL (Max) (mA) IOH (Max) (mA) Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG) Bits (#) Digital input leakage (Max) (uA) ESD CDM (kV) ESD HBM (kV)
SN74LS151 Order now Encoder
LS     4.75     5.25     1     5     35     10     38     16:1     Standard     8     -0.4     Catalog     0 to 70     PDIP | 16
SOIC | 16
SO | 16    
See datasheet (PDIP)
16SO: 80 mm2: 7.8 x 10.2 (SO | 16)
16SOIC: 59 mm2: 6 x 9.9 (SOIC | 16)    
16     5     0.75     2    
SN54LS151 Samples not available Encoder/Multiplexer     LS     4.5     5.5     1     5     35     10     38     16:1     Standard     8/-0.4       Military     -55 to 125     CDIP | 16
CFP | 16
LCCC | 20    
See datasheet (CDIP)
See datasheet (CFP)
20LCCC: 79 mm2: 8.89 x 8.89 (LCCC | 20)    
16     5     0.75     2