empowering creative people

SparkFun Multiplexer Breakout - 8 Channel (74HC4051)

SKU: BOB-13906

$2.08 AUD, inc GST
$1.89 AUD, exc GST

More Views

SparkFun Multiplexer Breakout - 8 Channel (74HC4051)
2.08 AUD

SKU: BOB-13906

$2.08 AUD, inc GST
$1.89 AUD, exc GST

View our maker favourites for this product which are likely to be a great alternative.

In stock, with a short lead time. 91 units dispatch in 3 to 6 days (in addition to the shipping method you choose). Our timing and stock is accurate. Delivery to you by Fri, 30th of Mar with Express Post within Australia.


  • $6.95 Standard (2-4 days, tracked)
  • $8.95 Express (Overnight*, tracked)
  • $3 Economy Post* (3-7 days, no tracking)
  • FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

*Conditions apply, see shipping tab below.

The SparkFun Multiplexer Breakout provides access to all pins and features of the 74HC4051, an 8-channel analog multiplexer/demultiplexer. The 74HC4051 allows you to turn four I/O pins into eight multifunctional, individually selectable signals, which can be used to do everything from driving eight LEDs to monitoring eight potentiometers.

The 74HC4051 can function as either a multiplexer or a demultiplexer, and it features eight channels of selectable inputs/outputs. The routing of common signal to independent I/O is set by digitally controlling three select lines, which can be set either high or low into one of eight binary combinations.

One half of the board breaks out the control signals (E, S0-S2) and common input/output (Z). The other side provides access to all eight independent I/O’s (Y0-Y7). Both sides include supply and ground connections (VCC, VEE, GND).



  • Switches analog or digital signals
  • 8 channels controlled by 3 select inputs
  • Wide voltage supply range: 2 – 10V
  • Bipolar supply support (e.g., ±5V)
  • Optional enable input
  • Breadboard compatible breakout


Documentation and Resources:

Product Comments

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

  • $3 for Small Items (3-7 days, not tracked, only available on selected small items)
  • $6.95 for Standard Post (2-4 days, tracked)
  • $8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
  • Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

  • $11.49 for Pack and Track (3+ days, tracked)
  • $16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address:

Unit 18, 132 Garden Grove Parade
NSW, 2289

Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.