CY74FCT138ATSOC

Overview

The CY74FCT138ATSOC is a high-speed CMOS 1-of-8 decoder manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and features a propagation delay of 6 ns. The device is housed in an SOIC-16 surface-mount package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Provides one-hot decoding for eight distinct output lines based on three address inputs.
• Features active-low outputs with high drive capability suitable for direct interfacing.

Applications

• Memory address decoding
• Chip select generation
• I/O port selection

Procurement Notes

Verify the specific suffix 'SO' indicates the SOIC-16 package variant. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure moisture sensitivity level handling protocols are followed during assembly.

Selection Notes

Select this component when a single-channel 1-of-8 decoding function is required. It serves as a direct replacement for legacy 74FCT138 devices in designs requiring faster switching speeds and lower power consumption compared to standard TTL logic families.

Part Context

This part belongs to the FCT (Fast CMOS) logic family, designed to bridge the performance gap between standard CMOS and ECL technologies. It offers high-speed operation while maintaining compatibility with standard TTL input levels and CMOS output characteristics.

Replacement Considerations

The CY74FCT138ATQCT is a verified alternative offering identical logical functionality but packaged in SSOP-16 format instead of SOIC-16.