CMOS QUAD 2-Input NOR Gate CD40193BE

The CMOS QUAD 2-Input NOR Gate CD40193BE listing is the CD40193BE IC, which is a CMOS presettable 4-bit binary up/down counter rather than a NOR gate. It counts from 0 to 15 using separate count-up and count-down clock inputs, can be loaded with any starting value, and has carry and borrow outputs for chaining several counters. Its wide supply range makes it easy to use in 5 V to 15 V logic projects.

CMOS QUAD 2-Input NOR Gate CD40193BE Specifications

• Function: synchronous 4-bit binary up/down counter (0–15)
• Clock inputs: separate CLOCK UP and CLOCK DOWN
• Preset: parallel load of a 4-bit starting value
• Reset: asynchronous reset to 0
• Cascading: CARRY and BORROW outputs
• Logic family: CMOS 4000B series
• Supply voltage: 3 V to 18 V
• Package: 16-pin DIP (BE suffix), VDD on pin 16 and VSS on pin 8

CMOS QUAD 2-Input NOR Gate CD40193BE Applications

• Up/down counters for push buttons and rotary encoders
• Programmable frequency dividers and countdown timers
• Event and position counters
• Cascaded 8-bit and larger counters using CARRY and BORROW
• Digital logic labs and university electronics courses

What's in the Box

• 1 × CD40193BE CMOS up/down counter IC

Tip: Connect pin 16 to the positive supply and pin 8 to ground, with a 100 nF decoupling capacitor nearby. When counting in one direction, hold the unused clock input high, and never leave CMOS inputs floating.

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