XL74LS138 – Decoder/Demultiplexer – Xinluda

The Xinluda XL74LS138 is a 1-of-8 (3-to-8 line) decoder/demultiplexer from the 74LS bipolar Schottky TTL logic family, featuring three select inputs, three enable inputs, and eight active-low outputs in an SOP-16 package.

The XL74LS138 from Xinluda is a 1-of-8 (3-to-8 line) decoder/demultiplexer, a pin-for-pin and functionally compatible member of the industry-standard 74LS138 logic family. The device decodes one of eight outputs based on the binary states of three select (address) inputs, gated by three enable inputs. Built on a bipolar Schottky-clamped TTL process, it offers the fast switching and proven reliability that have kept the 74LS138 a workhorse in address decoding and data-routing designs for decades.

Key Features

• 1-of-8 (3-to-8 line) decoder / demultiplexer function (industry-standard 74LS138)
• Three binary select (address) inputs: A, B, C
• Three enable inputs (two active-low, one active-high) to simplify cascading without external gates
• Eight mutually exclusive active-low outputs (Y0-Y7)
• Bipolar Schottky-clamped TTL (74LS) process
• An enable input can serve as a data input for demultiplexing applications
• Supports cascading into a 24-line decoder with no external inverters and a 32-line decoder with a single inverter
• SOP-16 surface-mount package (the pin-compatible XD74LS138 covers the DIP-16 through-hole option)
• Pin-compatible drop-in replacement for SN74LS138, DM74LS138, HD74LS138 and equivalents

Applications

• Memory and peripheral chip-select address decoding
• 1-of-8 data demultiplexing / data routing
• Microprocessor and microcontroller I/O port expansion
• Cascaded 1-of-24 or 1-of-32 decoding (multiple devices)
• General-purpose digital logic and glue logic

Why Source XL74LS138 from Pacific Component Xchange

The Xinluda XL74LS138 is an offshore-brand logic IC with limited authorized-distributor coverage, which can make it difficult to source through mainstream channels. Pacific Component Xchange is an independent distributor specializing in hard-to-find and obsolete power-management ICs and logic components. We help engineers and buyers secure parts that are scarce, end-of-life, or otherwise unavailable through standard supply chains.

Every order is backed by our commitment to authenticity and quality, with global shipping to keep your production lines and prototype builds moving. Because the XL74LS138 is a request-for-quote item, pricing and lead time are confirmed at the time of inquiry based on current availability. Submit an RFQ to Pacific Component Xchange today for a fast quote on the XL74LS138 and other Xinluda 74LS-series logic.