SN74LS93D

Counter Dividers Overview

The SN74LS93D is a 4-bit binary counter integrated circuit manufactured by Texas Instruments. It belongs to the 74LS logic series and operates within a supply voltage range of 4.75 V to 5.25 V. The device features asynchronous reset functionality and utilizes negative-edge triggered flip-flops for counting operations. It supports an up-counting direction and is housed in a 14-SOIC package with a width of 3.90 mm. The component is rated for operation at temperatures between 0°C and +70°C.

Counter Dividers Feature Summary

• Asynchronous reset capability allows immediate clearing of count states independent of the clock signal.
• Negative-edge triggering ensures precise synchronization with falling clock transitions.
• Binary counting architecture provides sequential state progression for digital timing applications.

Counter Dividers Applications

• Digital frequency division circuits
• Sequential event counting systems
• Timing pulse generation modules

Counter Dividers Procurement Notes

Verify the specific suffix 'D' confirms the SOIC surface-mount package variant rather than the PDIP through-hole version. Confirm RoHS compliance status and check for any recent product change notifications regarding manufacturing site or material composition updates prior to finalizing procurement orders.

Counter Dividers Selection Notes

Select this component when a 4-bit synchronous binary counter with asynchronous reset is required in a surface-mount design. Ensure the system operates within the specified 4.75 V to 5.25 V voltage range and that the 74LS logic family speed and drive characteristics align with the target application requirements.

Counter Dividers Part Context

This part is part of the standard 74LS series, widely used in legacy and industrial digital logic designs. It serves as a fundamental building block for creating larger counters or dividers when cascaded with other units. The SOIC package facilitates automated assembly in modern PCB manufacturing processes.

Counter Dividers Replacement Considerations

SN74LS93DR (Tape and Reel variant)

Counter Dividers FAQ

Is the reset function synchronous or asynchronous?

The reset function is asynchronous, meaning it clears the counter outputs immediately upon activation without waiting for a clock edge.

What type of trigger does the counter use?

The SN74LS93D uses negative-edge triggered flip-flops for its counting operations.