Description

The SN74LS192N is a synchronous, positive-edge-triggered, 4-bit bidirectional decade counter IC in TTL logic, manufactured by Texas Instruments and housed in a standard 16-pin PDIP through-hole package. It counts synchronously in both up and down modes, functioning as a decade counter that counts in tens from 0 to 9 and back, making it well suited for a wide range of counting applications.

The IC features parallel data inputs (P0–P3) that allow you to load an initial count value, giving flexibility in how counting operations start and proceed. This makes it a strong fit for frequency division circuits, clock generation, waveform modulation, pulse counting, and event sequencing in digital control systems. It operates with a dual-clock, clear-input configuration, allowing separate up/down clock lines along with a clear function to reset the count.

This chip is a classic building block in digital electronics education and hobbyist projects, commonly used alongside 7-segment displays, shift registers, and other TTL logic ICs to build counters, timers, and sequencing circuits.

Key Specifications

• Function: Synchronous 4-bit up/down decade counter, dual clock with clear
• Logic Family: TTL (LS series)
• Package: 16-pin PDIP (through-hole)
• Max Clock Frequency: 25MHz 
• Supply Current: ~8mA 
• Operating Temperature: 0°C to 70°C
• Manufacturer: Texas Instruments

Common Applications

• Frequency division circuits in clock generation and waveform modulation systems
• Pulse counting and monitoring applications
• Event sequencing and control in digital systems
• Digital clocks, timers, and counter circuits (often paired with 7-segment displays)
• Educational and hobbyist digital logic projects

Package Includes

• 1 x SN74LS192N IC (16-pin DIP)