SN74LS193D

Counter Dividers Overview

The SN74LS193D is a synchronous 4-bit up/down counter manufactured by Texas Instruments, though listed under onsemi in some catalogs. It features dual clock inputs for independent up and down counting operations. The device includes a parallel data input capability for presetting the count value and an output enable control. It operates within a standard temperature range of 0 to 70 degrees Celsius and utilizes a 16-pin SOIC package.

Counter Dividers Feature Summary

• Synchronous 4-bit binary or BCD/decade counting functionality
• Independent up and down clock inputs for bidirectional operation
• Parallel load capability for direct presetting of count values
• Output enable pin for controlling data bus access

Counter Dividers Applications

• Digital timing circuits requiring precise interval measurement
• Frequency division networks in signal processing systems
• Position control logic in automated machinery
• Event counting modules in industrial instrumentation

Counter Dividers Procurement Notes

Verify manufacturer origin as Texas Instruments despite catalog listings. Confirm package type is 16-pin SOIC. Check temperature grade for commercial use (0-70°C). Ensure datasheet matches synchronous up/down counter specifications rather than asynchronous variants.

Counter Dividers Selection Notes

Select this component for applications requiring synchronous bidirectional counting with parallel load capability. Compare propagation delays against other LS series counters. Verify voltage compatibility with system logic levels. Consider package availability in surface-mount configurations for PCB layout constraints.

Counter Dividers Part Context

Part of the 74LS series of TTL logic devices. Functions as a programmable counter distinct from simple flip-flops or shift registers. Commonly used in conjunction with decoders and display drivers for numeric readouts. Standard industry replacement for legacy asynchronous counter designs requiring higher speed performance.

Counter Dividers Replacement Considerations

SN74LS193DR: Same functional specification with tape-and-reel packaging option. SN74LS193DE4: RoHS-compliant version of the through-hole DIP variant. SN74LS193N: Alternative plastic DIP package configuration.