SN74HCS238DYYR

Overview

The SN74HCS238DYYR is a 3-to-8 line decoder and demultiplexer from the HCS logic family, manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an ambient temperature range of –40°C to +125°C. The device features Schmitt-trigger inputs for noise rejection and balanced CMOS push-pull outputs capable of driving up to ±7.8 mA at 6 V. It is housed in a 16-pin SOT-23-THIN package.

Feature Summary

• Schmitt-trigger inputs provide high tolerance for slow or noisy input signals
• Balanced CMOS push-pull outputs ensure similar sourcing and sinking current capabilities
• Low power consumption with typical supply current of 100 nA

Applications

• Memory device selection with shared data bus
• Reducing required number of outputs for chip select applications
• Routing data

Procurement Notes

Verify the specific DYY suffix indicates the SOT-23-THIN (16-pin) package configuration. Confirm RoHS compliance status through official documentation. Ensure design implementation accounts for the extended temperature range and electrical limits defined in the datasheet specifications.

Selection Notes

Select this component when system requirements demand low power operation combined with robust noise immunity provided by Schmitt-trigger inputs. The wide voltage range suits various digital logic levels. Verify that the SOT-23-THIN package fits the available PCB real estate constraints.

Part Context

This part belongs to the SN74HCS series, which combines high-speed CMOS performance with low power consumption. The HCS family is designed for general-purpose digital applications requiring reliable operation across extended industrial temperature ranges and wide supply voltages.

Replacement Considerations

SN74HCS238DYY: Identical function in standard SOT-23-THIN package without reel/cut-tape suffix specification.