ICCD4075 3-input OR Gate

The CD4075 3-input OR Gate IC is a CMOS 4000-series chip containing three independent 3-input OR gates. Each output goes HIGH when any of its three inputs is HIGH, and is LOW only when all three inputs are LOW. It works over a wide supply range and draws very little current, which makes it handy for combining signals in digital logic projects, alarms and electronics labs.

CD4075 3-input OR Gate Specifications

• Function: triple 3-input OR gate (3 gates per chip)
• Logic: Y = A + B + C
• Family: CMOS 4000 series
• Supply voltage: 3 V to 18 V (CD4075B datasheet)
• Pins: 14 (VDD on pin 14, VSS on pin 7)
• Inputs: CMOS, very high input impedance

CD4075 3-input OR Gate Applications

• Combining several alarm or sensor signals into one output
• Building logic functions in digital electronics courses
• Replacing several 2-input OR gates with one chip
• Enable and wake-up logic in low-power circuits
• Logic trainers and school labs

What's in the Box

• 1 × CD4075 IC

Tip: Never leave CMOS inputs floating: tie every unused input of an OR gate to VSS (ground) so it does not affect the output. Handle the chip with care against static, and add a 100 nF capacitor between VDD and VSS close to the chip.

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