74VHC138N

Signal Switches, Multiplexers, Decoders Overview

The onsemi 74VHC138N is a high-speed CMOS decoder/demultiplexer belonging to the 74VHC logic family. It accepts three binary weighted address inputs and provides eight mutually exclusive low-active outputs when enabled. The device operates within a supply voltage range of 2 V to 5.5 V and supports surface mount installation in an SOIC-16 package. It functions across an operating temperature range from -40 °C to +85 °C.

Signal Switches, Multiplexers, Decoders Feature Summary

• Provides eight mutually exclusive low-active outputs for decoding applications
• Features composite enable inputs allowing easy parallel expansion
• Compatible with JEDEC standards for memory chip decoding selection

Signal Switches, Multiplexers, Decoders Applications

• Memory chip decoding selection
• Parallel expansion into larger decoders
• Data demultiplexing

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific packaging variations such as tube quantities. Ensure the part number suffix matches the required package type before procurement.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for designs requiring low-power operation with wide voltage tolerance. Verify that the input logic levels are compatible with the system's driving signals. Consider the package constraints and thermal requirements for the intended application environment.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the 74VHC series, which offers high-speed performance comparable to LSTTL but with lower power consumption. The 74VHC138 specifically addresses needs for efficient address decoding in digital systems where power efficiency and speed are critical design parameters.

Signal Switches, Multiplexers, Decoders Replacement Considerations

Check for pin-compatible alternatives within the same logic family. Verify electrical characteristics match the original design requirements. Ensure any substitute maintains the same output drive capability and enable logic configuration.