TC74VHC238FK(EL,K)

Overview

The TC74VHC238FK(EL,K) is a single 3-to-8 line decoder manufactured by Toshiba Semiconductor and Storage. It operates within a supply voltage range of 2 V to 5.5 V and features a propagation delay of 5.5 ns. The device utilizes CMOS logic technology and is housed in a 16-VSSOP package. It supports surface mount installation and functions reliably across an operating temperature range from -40 °C to +85 °C.

Feature Summary

• Provides one 3-to-8 line decoding function with non-inverting outputs
• Operates on standard CMOS logic levels for broad compatibility
• Designed for surface mount applications in compact electronic assemblies

Applications

• Address decoding in microprocessor systems
• Data routing and selection circuits
• Control signal generation for peripheral devices

Procurement Notes

Verify the specific suffix (EL,K) against the manufacturer's current datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the 16-VSSOP footprint aligns with your PCB layout. Confirm RoHS compliance status if required by your regulatory standards before finalizing procurement.

Selection Notes

Select this component when a low-power, high-speed 3-to-8 decoder is needed for 2V to 5.5V systems. The 5.5 ns delay suits moderate-speed digital logic. Consider the 16-VSSOP package constraints for board space. Verify thermal performance within the -40 °C to +85 °C range for your specific environment.

Part Context

This part belongs to the Toshiba 74VHC series of high-speed CMOS logic devices. The 74VHC family offers performance comparable to LS-TTL but with lower power consumption. The 238 designation specifically indicates a 3-to-8 line decoder configuration, widely used for enabling/disabling multiple components based on binary input codes.

Replacement Considerations

Check for direct cross-references such as the 74VHC238FT variant, noting differences in operating temperature ranges (-40 °C to +125 °C vs. +85 °C) and package types (TSSOP-16B vs. VSSOP-16). Verify pin compatibility before substitution.