CD74HC238PWR

Overview

The CD74HC238PWR is a high-speed CMOS decoder/demultiplexer manufactured by Texas Instruments. It features three binary select inputs and eight outputs that are normally low, switching to high when enabled. The device operates within a supply voltage range of 2V to 6V and supports surface-mount installation in a TSSOP-16 package. It functions as a single circuit with an operating temperature range from -55°C to +125°C.

Feature Summary

• Provides three binary select inputs for addressing eight distinct output lines
• Features two active-low enable inputs and one active-high enable input to facilitate cascading
• Outputs are normally low, transitioning to high logic levels upon activation

Applications

• Memory address decoding
• Data routing applications
• Driving multiple loads equivalent to ten low-power Schottky TTL units

Procurement Notes

Verify the specific suffix PWR indicates tape-and-reel packaging configuration. Confirm RoHS compliance status through official datasheets or manufacturer documentation. Ensure the component matches the required HC logic family specifications for voltage and speed compatibility before integration into final designs.

Selection Notes

Select this component when a single 3-to-8 line decoder is required with active-high output behavior. Consider the HC series for low power consumption combined with high-speed performance comparable to low-power Schottky TTL. Verify package availability and ensure the operating temperature range meets environmental requirements.

Part Context

This part belongs to the Texas Instruments CD74HC238 series, which includes variants like CD74HC238PW and CD74HC238MT. These devices share identical logical functionality but differ in physical packaging, such as TSSOP or SOIC configurations. The series is designed for general-purpose digital logic applications requiring efficient signal distribution.

Replacement Considerations

CD74HC238PW serves as a direct pin-compatible alternative with identical logical function in a different package format.