CD74HCT253EG4

Overview

The CD74HCT253EG4 is a dual 4-line to 1-line data selector/multiplexer manufactured by Texas Instruments. It belongs to the 74HCT logic family, utilizing silicon gate CMOS technology for low power consumption while maintaining speeds comparable to LSTTL. The device features two independent multiplexers, each selecting one of four data inputs based on address lines. It operates within a supply voltage range of 4.5V to 5.5V and supports an operating temperature range from -55°C to +125°C. The component is housed in a 16-pin Plastic Small Outline Package (SOIC) with a width of 0.295 inches (7.50mm).

Feature Summary

• Dual independent 4-to-1 multiplexer architecture providing two separate signal selection channels.
• HCT logic compatibility ensures direct interface with standard TTL logic systems.
• High noise immunity and low power dissipation characteristic of silicon gate CMOS construction.

Applications

• Data routing and switching in digital communication systems.
• Address decoding for memory or peripheral selection.
• Waveform generation and pulse shaping circuits.

Procurement Notes

Verify the specific suffix 'G4' indicates RoHS compliance and green manufacturing status as per Texas Instruments documentation. Confirm the package type corresponds to the 16-SOIC variant. Ensure the order matches the exact part number to avoid confusion with non-green or different package variants within the same logic family.

Selection Notes

Select this component when dual independent 4-to-1 multiplexing is required with HCT logic level compatibility. It is suitable for designs needing operation across the full industrial temperature range. Consider pinout compatibility if replacing older 74HC or 74HCT equivalents in existing layouts.

Part Context

This part is a member of the Texas Instruments 74HCT series, designed for high-speed CMOS applications requiring TTL compatibility. The EG4 suffix typically denotes a lead-free, halogen-free version compliant with environmental directives. It serves as a functional equivalent to other industry-standard 74HCT253 devices.

Replacement Considerations

Compatible substitutes include the CD74HCT253M and SN74HCT253N. Verify that alternative packages maintain the same pin configuration and electrical characteristics for direct replacement.