74HCT393D,653

Counter Dividers Overview

The Nexperia 74HCT393D,653 is a dual 4-bit binary ripple counter in a 14-lead SO plastic small outline package. It contains two independent counters with individual clock inputs and asynchronous master resets. The device operates on the HIGH-to-LOW transition of the clock signal. Recommended supply voltage ranges from 4.5 V to 5.5 V. Operating temperature spans -40 °C to +125 °C.

Counter Dividers Feature Summary

• Dual independent 4-bit binary ripple counters
• Asynchronous master reset for each counter
• TTL-compatible input levels

Counter Dividers Applications

• Digital counting circuits
• Frequency division applications
• Timing sequence generation

Counter Dividers Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm that the HCT logic family aligns with system voltage requirements. Ensure environmental specifications meet operational needs. Check for automotive qualification if applicable to the target application.

Counter Dividers Selection Notes

Select this component when dual independent counters are required within a single package. The HCT series ensures compatibility with standard TTL logic levels. Verify package availability against board space constraints. Consider power dissipation limits during high-frequency operation.

Counter Dividers Part Context

This part belongs to the 74HCT logic family, designed for CMOS technology with TTL-compatible inputs. It serves as a digital logic component for sequential circuit design. The dual configuration allows for compact implementation of multi-stage counting functions.

Counter Dividers Replacement Considerations

Equivalent parts include the 74HC393 variant for CMOS input levels. Other manufacturers may offer compatible dual 4-bit counters. Verify pinout and electrical characteristics before substitution.

Counter Dividers FAQ

How does the counter advance?

The counter advances on the HIGH-to-LOW transition of the clock input.

What triggers the reset function?

A HIGH signal on the master reset input clears the counter stages and forces outputs LOW.