XD74LS166 – 8-Bit Parallel-In/Serial-Out Shift Register – Xinluda

The Xinluda XD74LS166 is an 8-bit parallel-in/serial-out shift register in a DIP-16 package, part of the 74LS low-power Schottky TTL logic family. Available for RFQ from Pacific Component Xchange.

The Xinluda XD74LS166 is an 8-bit shift register from the industry-standard 74LS (Low-power Schottky TTL) logic family. It is configured as a parallel-input or serial-input, serial-output device, allowing eight bits of data to be loaded in parallel and then clocked out serially, one bit at a time. This makes it a versatile building block for serializing data, bus expansion, and digital data handling in legacy and cost-sensitive designs.

The device features a gated clock input and an overriding asynchronous clear, with a shift/load control input that selects between synchronous parallel loading and serial shifting. The XD74LS166 follows the well-established JEDEC 74LS166 function and pinout, making it a drop-in functional equivalent for the standard 74LS166/SN74LS166 used across decades of TTL designs.

Key Features

• 8-bit shift register, parallel-in or serial-in / serial-out
• 74LS (Low-power Schottky) TTL logic family
• Gated clock input with overriding asynchronous clear
• Shift/Load control input selects synchronous parallel load or serial shift
• Buffered inputs and input clamping diodes to simplify system design
• Standard JEDEC 74LS166 function and pinout – functional equivalent to SN74LS166
• 16-pin DIP (DIP-16) through-hole package
• Operating temperature range: 0°C to +70°C (commercial)

Applications

• Parallel-to-serial data conversion
• Serial data transmission and bus expansion
• Keyboard, switch, and sensor input scanning/serialization
• Legacy TTL board repair and like-for-like replacement
• Industrial control and instrumentation logic
• Educational and prototyping digital logic projects

Why Source XD74LS166 from Pacific Component Xchange

The XD74LS166 is a specialty Xinluda-branded logic IC with limited authorized-distributor coverage in Western markets, 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 like the XD74LS166 when standard supply chains come up short.

Every order is backed by our commitment to authenticity and quality, with inspection and traceability support, plus global shipping to keep your production and repair schedules on track. Because this is a Request-For-Quote item, pricing and lead time are confirmed per inquiry based on current sourcing. Submit an RFQ today and our sourcing team will respond with availability, pricing, and lead-time for the quantity you need.