74HC238PW,118

Overview

The Nexperia 74HC238PW,118 is a 3-to-8 line decoder and demultiplexer housed in a 16-pin TSSOP package. It decodes three binary weighted address inputs (A0, A1, A2) to eight mutually exclusive active HIGH outputs (Y0 to Y7). The device operates on a single supply voltage ranging from 2.0 V to 6.0 V. It features three enable inputs: E1 and E2 are active LOW, while E3 is active HIGH. All outputs remain LOW unless E1 and E2 are LOW and E3 is HIGH.

Feature Summary

• CMOS low power dissipation with high noise immunity
• Demultiplexing capability using active LOW enable inputs as data strobes
• Multiple input enable configuration for easy parallel expansion to larger decoders
• Input clamp diodes allowing interface to voltages exceeding VCC

Applications

• Memory chip select decoding
• Parallel expansion of decoder systems
• Data routing via demultiplexing functions

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm the exact package variant and tape-and-reel specifications. Ensure that the component meets the required JEDEC standards and temperature range specifications for the intended operational environment before finalizing procurement orders.

Selection Notes

Select this component when a wide supply voltage range compatible with both 2.0 V and 6.0 V operation is required. It is suitable for designs needing multiple enable inputs for system expansion or memory addressing. Verify that the TSSOP16 package dimensions align with the PCB layout constraints and thermal management requirements of the target application.

Part Context

This part belongs to the 74HC/HCT logic family, specifically designed as a 3-to-8 line decoder/demultiplexer. It shares functional characteristics with other variants like the 74HC238D and 74HC238BQ, differing primarily in the physical package type. The PW suffix indicates the Thin Shrink Small Outline Package (TSSOP16), which is distinct from SO or QFN footprints.

Replacement Considerations

SN74HCS238BQBR by Texas Instruments is listed as an alternative option.