
SN74LS158 Quad 2-to-1 Data Selector/Multiplexer, Inverting Outputs
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Prices updated: 12 Oct 2026
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About this product
The SN74LS158 contains four 2-line to 1-line data selectors/multiplexers in a single 74LS-series TTL package, sharing a common select input and enable input. Its outputs are inverted, so it is used to route one of two data sources to four outputs in logic and control circuits.
Specifications
- Function
- Quad 2-to-1 data selector/multiplexer
- Output type
- Inverting
- Logic family
- LS-TTL (74LS)
- Supply voltage
- 4.75 V to 5.25 V
- Package
- DIP-16
Frequently asked questions
How is the SN74LS158 different from the SN74LS157?
Both select between two sources per channel, but the 158 has inverting outputs while the 157 has non-inverting outputs. Choose the one that matches the polarity your circuit needs.
How do I disable the selector?
Drive the enable input (G) high to disconnect the data path. Check the datasheet for the resulting output level before relying on it in your design.

