MM74HC393MTCX

Counter Dividers Overview

The MM74HC393MTCX is a dual 4-bit binary counter utilizing advanced silicon-gate CMOS technology. It contains two independent ripple carry counters that increment on the negative edge of the clock input and feature an independent clear input for count truncation. The device operates within a supply voltage range of 2 V to 6 V, with a typical operating frequency of 50 MHz and a typical propagation delay of 13 ns from clock to QA. It provides a fanout of 10 LS-TTL loads and includes internal diode clamps for static discharge protection.

Counter Dividers Feature Summary

• Contains two independent 4-bit ripple carry binary counters capable of cascading to form a divide-by-256 counter
• Features asynchronous clearing of all bits via a dedicated clear input to enable divide-by-N configurations
• Provides high noise immunity and low power consumption inherent to standard CMOS technology

Counter Dividers Applications

• Digital counting circuits requiring dual independent channels
• Frequency division applications using cascaded counter stages
• Timing and control logic in digital systems

Counter Dividers Procurement Notes

Verify the package type matches the required footprint, as the MM74HC393 series is available in multiple packages including TSSOP-14, SOIC-14, SOP, and PDIP-14. Confirm the suffix 'X' indicates tape and reel packaging if automated assembly is planned. Ensure the design accounts for the recommended operating conditions regarding supply voltage and temperature ranges specified in the datasheet.

Counter Dividers Selection Notes

Select this component when dual independent 4-bit counting is required within a single package. It serves as a functional and pin-compatible replacement for the 74LS393, offering improved speed and lower power consumption. Consider the TSSOP-14 package for space-constrained surface-mount designs. Verify that the load requirements do not exceed the specified fanout capabilities.

Counter Dividers Part Context

This part belongs to the MM74HC series of high-speed CMOS logic devices originally manufactured by Fairchild Semiconductor and now distributed by onsemi. The HC series is designed to be functionally equivalent to the legacy 74LS logic family while providing superior electrical characteristics such as wider supply voltage tolerance and lower quiescent current.

Counter Dividers Replacement Considerations

The MM74HC393MTCX is functionally and pin-equivalent to the MC74HC393ADR2G and other variants within the 74HC393 family. Cross-reference specific package types and suffixes to ensure mechanical compatibility.