XD74LS27 – Triple 3-Input NOR Gate Logic IC – Xinluda

The Xinluda XD74LS27 is a Low-power Schottky TTL Triple 3-Input NOR Gate logic IC in a 14-pin DIP package, containing three independent 3-input NOR gates. Available on an RFQ basis through Pacific Component Xchange.

The XD74LS27 from Xinluda is a member of the popular 74LS (Low-power Schottky TTL) logic family, implementing a Triple 3-Input NOR Gate function. The device integrates three independent NOR gates, each accepting three inputs, on a single 14-pin chip. Each gate drives its output LOW whenever any of its three inputs is HIGH, and HIGH only when all three inputs are LOW — the classic NOR logic function. It is functionally equivalent to industry-standard 74LS27 / DM74LS27 / SN74LS27 devices and is a practical drop-in for legacy TTL designs.

Key Features

• Triple 3-Input NOR Gate — three independent gates per package
• Low-power Schottky TTL (74LS) technology for fast switching at low power
• Operates from a 4.75 V to 5.25 V (nominal 5 V) TTL supply
• Bipolar inputs and totem-pole (push-pull) outputs; interfaces directly with TTL/LSTTL logic
• Operating temperature range of 0 °C to +70 °C (commercial)
• 14-pin DIP package (DIP-14) following the standard 74LS27 pinout
• Functionally equivalent to 74LS27 / DM74LS27 / SN74LS27

Applications

• General-purpose combinational logic and glue logic
• Legacy TTL board repair, retrofit, and replacement
• Industrial control and instrumentation
• Education, prototyping, and hobbyist electronics
• Signal gating and simple decode/control logic

Why Source XD74LS27 from Pacific Component Xchange

The XD74LS27 is a hard-to-find part with little to no authorized-distributor stock. Pacific Component Xchange specializes in sourcing scarce, end-of-life, and allocation-constrained logic ICs and power-management components. Whether you need a handful for a repair or volume for a production run, our global supplier network and rigorous incoming inspection help you secure authentic parts when mainstream channels come up empty.

We support obsolete and legacy TTL sourcing, authenticity verification, and worldwide shipping. A surface-mount sibling (XL74LS27, SOP-14) is also available on request. Request a quote (RFQ) for the XD74LS27 today and our team will confirm availability, lead time, and pricing for your required quantity.