Texas Instruments

SN74ALS259N

SN74ALS259N Description

The SN74ALS259N from Texas Instruments is an 8-bit addressable latch designed for high-performance digital systems. Housed in a 16-pin DIP package, this IC operates within a 4.5V to 5.5V supply range and features a standard output type with robust TTL-compatible logic levels. With a propagation delay of just 2ns, it ensures rapid data handling, making it suitable for time-critical applications. The device supports 1:8 demultiplexing, allowing a single input to be routed to one of eight outputs based on a 3-bit address. Its 400µA high-level and 8mA low-level output current capabilities ensure reliable signal integrity across loads.

SN74ALS259N Features

• High-Speed Operation: 2ns propagation delay enables efficient data processing in fast-paced systems.
• Addressable Latch Functionality: 1:8 demultiplexing simplifies control logic by enabling selective output activation.
• Wide Operating Voltage: 4.5V–5.5V range ensures compatibility with standard TTL power supplies.
• Robust Output Drive: 400µA (high) / 8mA (low) current capacity supports diverse load conditions.
• Durable Packaging: Through-hole 16-DIP offers mechanical stability for prototyping and production.
• Compliance & Reliability: ROHS3 compliant, REACH unaffected, and EAR99 classified for global usability.

SN74ALS259N Applications

• Memory Addressing: Ideal for address decoding in microprocessor-based systems.
• Data Routing: Efficiently manages multiplexed data buses in communication hardware.
• Industrial Control: Used in PLC systems for output expansion and signal distribution.
• Test Equipment: Enables programmable signal routing in automated test setups.
• Retro Computing: Popular in vintage computer restorations due to its TTL compatibility.

Conclusion of SN74ALS259N

The SN74ALS259N stands out for its speed, flexibility, and reliability in digital logic applications. Its addressable latch functionality reduces external component count, while its industry-standard compliance ensures seamless integration. Whether for modern embedded systems or legacy electronics, this IC delivers precision and performance, making it a preferred choice for engineers seeking a versatile, high-speed latch solution.