XD74LS138 – Logic IC 3-to-8 Line Decoder/Demultiplexer – Xinluda

The Xinluda XD74LS138 is a 1-of-8 (3-to-8 line) decoder/demultiplexer from the 74LS low-power Schottky TTL logic family, supplied in a 16-pin DIP package. Available on an RFQ basis from Pacific Component Xchange.

The XD74LS138 from Xinluda is a 1-of-8 (3-to-8 line) decoder/demultiplexer belonging to the well-established 74LS low-power Schottky TTL logic family. It decodes three binary address inputs (A, B, C) into one of eight mutually exclusive active-LOW outputs (Y0-Y7), making it a workhorse part for address decoding, chip-select generation, and demultiplexing in digital systems.

The device incorporates three enable inputs – two active-LOW (G2A, G2B) and one active-HIGH (G1) – which simplify cascading and expansion without external gates. An enable input can also serve as a data line for demultiplexing applications. The XD74LS138 is a pin- and function-compatible equivalent to the industry-standard 74LS138, supplied in a through-hole DIP-16 package.

Key Features

• 1-of-8 (3-to-8 line) decoder/demultiplexer function
• 3 binary address (select) inputs decoding to 8 active-LOW outputs (Y0-Y7)
• Three enable inputs: two active-LOW (G2A, G2B) and one active-HIGH (G1) for easy expansion
• 74LS low-power Schottky TTL logic family
• Schottky-clamped inputs for fast switching
• 16-pin DIP (DIP-16) through-hole package
• An enable input is usable as a data input for demultiplexing

Applications

• Memory and peripheral chip-select / address decoding
• 1-to-8 demultiplexing of data lines
• I/O port and bank selection in microprocessor/microcontroller systems
• Display and keypad scanning logic
• General-purpose combinational logic and glue logic

Why Source XD74LS138 from Pacific Component Xchange

The XD74LS138 is a hard-to-find part with little to no authorized-distributor stock. Pacific Component Xchange specializes in sourcing scarce, obsolete, and allocation-constrained logic ICs and power-management components. As an independent distributor, we leverage a global supplier network to locate authentic Xinluda XD74LS138 inventory and competitive lead times. Every order is backed by our authenticity and quality-assurance processes, with worldwide shipping available. Request a quote (RFQ) today and our sourcing team will respond with current availability and pricing.