Texas Instruments

SN74LS259BN  

Latches

SN74LS259BN Description

The SN74LS259BN from Texas Instruments is an 8-bit addressable latch designed for high-performance digital systems. Operating within a 4.75V to 5.25V supply range and a temperature range of 0°C to 70°C, this IC is part of the 74LS series, known for its reliability in TTL logic applications. The device features a 1:8 demultiplexing circuit, allowing it to latch and output data to one of eight channels based on a 3-bit address input. With a propagation delay of 19ns and robust output drive capability (400µA source, 8mA sink), it ensures fast and stable signal routing in demanding environments. Packaged in a 16-pin DIP (Dual Inline Package), it is suited for through-hole mounting, making it ideal for prototyping and legacy systems.

SN74LS259BN Features

• Addressable Latch Functionality: Unique 1:8 demultiplexing capability for flexible data routing.
• High-Speed Operation: 19ns propagation delay ensures rapid response in time-critical applications.
• Wide Voltage Compatibility: Operates at standard 5V TTL levels (4.75V–5.25V).
• Strong Output Drive: 400µA high-level and 8mA low-level current for interfacing with multiple loads.
• Robust Construction: Through-hole DIP package enhances durability and ease of integration.
• Compliance: ROHS3 and REACH compliant, meeting modern environmental standards.
• Low Power Consumption: Optimized for energy-efficient designs.

SN74LS259BN Applications

The SN74LS259BN excels in systems requiring data storage, address decoding, and signal distribution, including:

• Microprocessor/Microcontroller Systems: For address latching and peripheral selection.
• Memory Modules: Enables efficient bank switching and memory expansion.
• Industrial Control Systems: Reliable performance in PLC and automation environments.
• Legacy Digital Systems: Ideal for retro-computing and repair due to through-hole packaging.
• Test Equipment: Used in logic analyzers and signal generators for precise data routing.

Conclusion of SN74LS259BN

The SN74LS259BN stands out as a versatile, high-speed latch with low power consumption and strong output drive, making it a preferred choice for address decoding and data storage in 5V TTL systems. Its 8-bit addressable latch functionality, combined with industrial-grade reliability, ensures seamless integration into both modern and legacy designs. Whether for embedded systems, industrial controls, or prototyping, this IC delivers consistent performance, backed by Texas Instruments' quality assurance.

SN74LS259BN Documents

Download datasheets and manufacturer documentation for SN74LS259BN

Datasheets :

SN54/74(LS)259(B)      

HTML Datasheet :

SN54/74(LS)259(B)      

PCN Design/Specification :

Material Set 30/Mar/2017