CY74FCT138ATSOCG4

Overview

The CY74FCT138ATSOCG4 is an octal decoder/demultiplexer manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features a SOIC-16 surface-mount package. The device supports an operating temperature range from 0°C to +70°C. It provides eight decoded outputs controlled by three address inputs, enabling precise signal routing in digital logic circuits.

Feature Summary

• Provides eight distinct decoded outputs for addressing applications
• Operates with standard 5V CMOS logic levels
• Features active-low output enable control

Applications

• Memory address decoding
• I/O port selection
• Signal demultiplexing

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status as per manufacturer documentation. Confirm the 'A' prefix denotes the extended commercial temperature range (0°C to +70°C) rather than the industrial grade. Ensure the SOIC-16 package dimensions match your PCB footprint requirements before finalizing procurement.

Selection Notes

Select this component when an 8-line demultiplexer or decoder is required for 5V systems. It serves as a direct replacement for legacy SN74F138 devices. Consider the package type and temperature rating to ensure compatibility with your assembly process and environmental constraints.

Part Context

This part belongs to the FCT (Fast CMOS Technology) family, designed for high-speed performance with low power consumption. It integrates advanced CMOS technology to offer faster switching speeds compared to standard TTL equivalents while maintaining compatible pinouts for easy migration.

Replacement Considerations

The SN74F138D is a verified functional substitute offering identical logic operations in a comparable SOIC-16 package. Verify that the substitute meets the same voltage and temperature specifications.