Quad MUX (2 input) 74157

The Quad MUX (2 input) 74157 is a 74-series logic IC with four 2-input multiplexers (2-line to 1-line data selectors). A single select input chooses whether all four outputs follow the A inputs or the B inputs, so the chip can switch a 4-bit value between two sources. It is a standard part in digital electronics labs and logic design courses.

Quad MUX (2 input) 74157 Specifications

• Function: quad 2-to-1 multiplexer, non-inverting outputs
• Channels: 4, each with inputs A and B and output Y
• Control: common select input (S) and active-low enable (G)
• Operation: S low selects the A inputs, S high selects the B inputs; enable high forces all outputs low
• Package: 16-pin DIP
• Power pins: VCC pin 16, GND pin 8
• Supply voltage: 5 V (standard 74-series logic)

Quad MUX (2 input) 74157 Applications

• Selecting between two 4-bit data buses
• Multiplexing display and address lines
• Building simple ALU and CPU data paths
• Digital logic lab experiments

What's in the Box

• 1 × 74157 quad 2-input multiplexer IC

Tip: Tie the enable pin (pin 15) to GND if you do not need it, and place a 100 nF capacitor between VCC and GND close to the chip.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.