CD74HCT4514EG4

Overview

The CD74HCT4514EG4 is a high-speed silicon-gate device from the Texas Instruments CD74HCT series, functioning as a 4-line to 16-line decoder/demultiplexer with input latches. It operates on a single 4.5-V to 5.5-V supply voltage and supports an extended temperature range of -55°C to +125°C. The component features direct LSTTL input logic compatibility with a maximum low-level input voltage of 0.8 V and a minimum high-level input voltage of 2 V. It utilizes a 24-pin plastic dual-in-line (PDIP) package.

Feature Summary

• Integrates a 4-bit strobed latch that isolates inputs when the latch enable signal is low, maintaining previous output states.

Applications

• Decoder applications requiring address decoding for memory or peripheral selection
• Demultiplexing data streams using the enable pin as a data input

Procurement Notes

Verify the specific ordering suffix 'G4' against current manufacturer documentation to confirm compliance status and availability. Confirm the PDIP-24 package designation matches the target board layout requirements. Ensure the operating environment remains within the specified -55°C to +125°C thermal limits during deployment.

Selection Notes

Select this component when HCT logic family compatibility with LSTTL interfaces is required. The inclusion of input latches makes it suitable for systems where stable decoded outputs are needed despite fluctuating input signals. Verify that the 4.5-V to 5.5-V supply range aligns with the system power architecture.

Part Context

This part belongs to the CD74HCT4514/CD74HCT4515 family of decoders and demultiplexers. While functionally similar to the HC series, the HCT variant provides direct compatibility with LSTTL logic levels. The EG4 suffix indicates a specific manufacturing configuration within the standard PDIP-24 housing.

Replacement Considerations

CD74HCT4514E serves as a standard alternative within the same product line.