7493 IC counter DIP-14 74LS93 7493

Product Overview

The 7493 (often referenced as the DM7493A in technical documentation) is a 4-bit binary ripple counter. It consists of four master-slave flip-flops internally connected to provide a divide-by-two counter and a three-stage divide-by-eight counter. When the output of the first stage is externally connected to the input of the second stage, it functions as a full 4-bit binary counter (divide-by-sixteen).

Core Specifications

• Manufacturer: National Semiconductor

• Function: 4-Bit Binary Counter (Divide-by-16).

• Features:

  • Gated Reset: Includes gated zero-reset inputs to clear the count to zero.

  • Performance: High-speed counting capability, typically up to 42 MHz.

  • Flexibility: Can be configured for different count sequences by modifying the input/output connections.

• Control Interface: Requires external wiring (connecting $Q_A$ to the $B$ input) to achieve the full 4-bit binary count length.