SN74HC154 4-to-16 Line Decoder/Demultiplexer
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Prices updated: 13 Oct 2026
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About this product
The SN74HC154 is a CMOS 4-line to 16-line decoder/demultiplexer with 16 active-low outputs, selected by four binary address inputs and gated by two active-low enable inputs. It is used for address decoding, chip selection and driving up to 16 separate outputs from four control lines.
Specifications
- Inputs
- 4 binary address + 2 active-low enables
- Outputs
- 16, active low
- Logic family
- HC (CMOS)
- Supply voltage
- 2 V to 6 V
- Package
- DIP-24
Frequently asked questions
How do I enable the selected output?
Both enable inputs (G1 and G2) must be low. When both are low, the output selected by the address lines goes low while the others stay high.
Can I drive LEDs directly from the outputs?
The outputs are active low, so an LED wired from VCC through a series resistor to an output will light when that output is selected. Verify the current limit in the datasheet and always use a series resistor.
