CD4093BE quad 2-input NAND Schmitt trigger CMOS IC — DIP-14, 3V–18V, hysteresis logic

The CD4093BE is a quad 2-input NAND Schmitt trigger IC from the CMOS 4000 series, available in the standard DIP-14 through-hole package. It contains four independent two-input NAND gates, each with Schmitt trigger action on both inputs. The Schmitt trigger characteristic means the gate switches at different voltage thresholds for rising and falling input signals, creating a hysteresis band (V_H) that makes it highly effective at rejecting noise and conditioning slow or noisy input signals into clean digital transitions.

With a wide supply voltage range of 3V to 18V and full CMOS compatibility, the CD4093BE is a versatile building block for oscillators, pulse shapers, debounce circuits, and noise-immune logic interfaces.

Key Specifications:

• Part number: CD4093BE
• Function: Quad 2-input NAND gate with Schmitt trigger inputs
• Gates: 4 independent NAND gates
• Inputs per gate: 2
• Supply voltage (V_DD): 3V – 18V
• Hysteresis voltage (V_H): positive and negative threshold difference
• Output: CMOS push-pull
• Package: DIP-14 (through-hole, 14-pin)
• Logic family: CMOS 4000 series
• Operating temperature: −40°C to +85°C

Key Features:

• Schmitt trigger inputs — hysteresis on both inputs for noise-immune switching and clean output transitions
• Wide supply range (3V–18V) — compatible with 3.3V, 5V, 9V, and 12V systems
• Quad NAND gates — four independent gates in one package for compact logic designs
• CMOS 4000 series — low power consumption, wide voltage range, industry-standard pinout
• DIP-14 package — breadboard and PCB friendly, easy to prototype

Applications:

• Astable and monostable oscillator circuits
• Switch and button debounce circuits
• Slow signal conditioning and waveform squaring
• Noise-immune logic level interfaces
• Crystal oscillator circuits
• Pulse width modulation (PWM) generation
• General-purpose NAND logic with noise immunity

Variants available:

• Chinese variant — compatible generic, suitable for prototyping and non-critical applications
• Original — branded IC (TI or equivalent), recommended for production and precision designs