SN74LS90NE4

Counter Dividers Overview

The SN74LS90NE4 is a dual 4-bit decade counter integrated circuit manufactured by Texas Instruments. It belongs to the SN54/74LS9x series and utilizes Low-power Schottky (LS) logic technology. The device features two independent counters: a divide-by-two stage and a divide-by-five stage, both operating asynchronously. It supports a supply voltage range of 4.75 V to 5.25 V and operates within a temperature range of 0°C to +70°C. The component is housed in a 14-pin PDIP package designed for through-hole mounting.

Counter Dividers Feature Summary

• Integrates two independent asynchronous counting stages within a single package
• Features a dedicated divide-by-two section with complementary outputs
• Includes a separate divide-by-five section with complementary outputs
• Supports cascading configurations for extended binary or decimal counting

Counter Dividers Applications

• Digital frequency division circuits
• Decimal counting systems
• Binary-coded decimal (BCD) generation
• Timing and sequencing logic applications

Counter Dividers Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and environmental compliance. Ensure the selected variant matches the required lead time and manufacturing origin. Cross-reference the datasheet revision history to validate pinout compatibility and electrical characteristics before finalizing procurement orders.

Counter Dividers Selection Notes

Select this component when low-power dissipation is required alongside standard TTL logic levels. The LS family offers improved speed compared to standard 74-series devices while maintaining lower power consumption. Verify that the application environment remains within the specified commercial temperature limits and that the 5V supply tolerance aligns with system power rails.

Counter Dividers Part Context

This part is a member of the Texas Instruments SN54/74LS9x family, which includes variants like the SN74LS90N and SN74LS92. These components are widely used in legacy digital designs requiring reliable decade counting. The NE4 suffix typically indicates RoHS compliance and green manufacturing options, distinguishing it from older non-compliant versions.

Counter Dividers Replacement Considerations

Compatible substitutes include the SN74LS90N and SN74LS90NSR. Verify that replacement parts maintain the same 14-pin DIP or SOIC footprint and identical logical functionality. Confirm that any alternative package does not alter the pin configuration or thermal performance requirements.