74VHC138SJX

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74VHC138SJX is a high-speed CMOS logic device belonging to the 74VHC series. It functions as a 3-to-8 line decoder or demultiplexer housed in a 16-pin SOP package. The component operates within a supply voltage range of 2 V to 5.5 V and supports surface mount installation. It is rated for an operating temperature range from -40°C to +85°C. The device features three enable inputs and provides eight active-low outputs.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides 3-to-8 decoding capability with active-low outputs
• Includes three enable inputs for flexible control
• Operates at high speeds compatible with standard CMOS logic families

Signal Switches, Multiplexers, Decoders Applications

• Address decoding in microprocessor systems
• Signal routing in digital communication circuits
• Memory chip selection in embedded designs

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific suffix SJX against the manufacturer datasheet to confirm the SOP-16 package type and tape-and-reel packaging configuration. Ensure compatibility with existing board layouts regarding pin pitch and thermal requirements before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a 3-to-8 decoder is required with low-voltage operation capabilities down to 2 V. The 74VHC series offers performance comparable to 5-V TTL devices while maintaining low power consumption suitable for battery-operated applications.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the broader 74VHC138 family, which includes variants with different packages such as TSSOP or MX suffixes. The SJX designation specifically identifies the SOP-16 form factor. All variants share the same logical function but differ in physical dimensions and mounting characteristics.

Signal Switches, Multiplexers, Decoders Replacement Considerations

The MM74HC138SJX is listed as a potential replacement option. Verify that the HC series voltage tolerance and switching speeds meet the design requirements before substituting.