SN74F138NG4

Overview

The SN74F138NG4 is a high-speed silicon-gate CMOS device from Texas Instruments, functioning as a 3-line to 8-line decoder/demultiplexer. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from 0°C to +70°C. The component features low input current and is designed for binary data conversion into corresponding outputs. It utilizes a 16-pin Dual In-Line Package (DIP) with a standard width of 0.300 inches (7.62 mm). The device includes three enable inputs for flexible system integration.

Feature Summary

• Converts binary-coded inputs into one-of-eight active-low outputs
• Includes three enable inputs for complex decoding control
• Utilizes high-speed silicon-gate CMOS technology

Applications

• Address decoding for memory arrays
• Demultiplexing data streams in digital systems
• Control logic in industrial instrumentation

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS status per manufacturer documentation. Confirm package dimensions match the 16-DIP specification with 0.300-inch width. Ensure the operating temperature range of 0°C to +70°C meets environmental requirements. Cross-reference datasheet revision history for any functional updates or pinout changes before finalizing procurement specifications.

Selection Notes

Select this component when a 3-to-8 line decoding function is required within a 5V logic family. The SN74F138NG4 is suitable for through-hole mounting applications requiring robust DIP packaging. Consider the propagation delay characteristics and output drive capabilities relative to load requirements. Verify compatibility with existing control signals and ensure adequate power supply decoupling for stable operation.

Part Context

This part belongs to the SN74F series of logic integrated circuits manufactured by Texas Instruments. The F series represents fast TTL-compatible logic families. The SN74F138 specifically addresses the need for efficient address decoding and demultiplexing in digital designs. It serves as a fundamental building block for systems requiring binary-to-decimal translation or signal routing based on input codes.

Replacement Considerations

The SN74F138N is a compatible variant within the same product line. Verify pinout compatibility and electrical specifications against the original design requirements before substitution.