SN74LS163 Presettable Synchronous 4-Bit Binary Counter – Low Power Schottky Logic 16-Pin DIP

The SN74LS163 is a high-speed 4-bit synchronous binary counter designed for precision digital timing and frequency division. The "Synchronous" nature of this chip is its most important feature: unlike ripple counters, every output bit changes at the exact same moment on the clock pulse. This eliminates the timing "glitches" that can cause errors in high-speed digital systems. This IC is remarkably flexible. It can be used as a simple modulo-16 counter, or it can be "preset" to start its count from a specific number. The chip includes two count-enable pins (ENP and ENT) and a Ripple Carry Output (RCO), which makes linking multiple 74LS163 units together to create 8-bit, 12-bit, or 16-bit counters a straightforward process. The 16-pin DIP through-hole package is the professional standard for industrial sequencers, educational logic trainers, and digital signal processing units. Whether you are building a frequency divider for a clock circuit or a complex state machine for an automated controller, the SN74LS163 provides a robust and reliable counting solution.

Key Features:

Synchronous Reset Features an active-low Clear input that resets the counter to zero on the next clock pulse, ensuring alignment with the system clock.

Internal Look-Ahead Carry Designed with high-speed carry logic to allow for easy cascading into multi-bit counters without extra external gates.\

Programmable Parallel Load Allows any 4-bit binary value to be pre-loaded into the counter when the Load input is held low during a clock edge.

Low Power Schottky (LS) Technology Delivers high-speed counting performance with the power efficiency expected from the 74LS logic family.

High Noise Immunity Engineered to provide stable logic transitions in complex digital environments, making it ideal for industrial control.