Texas Instruments

SN74LS645N  

Buffers, Drivers, Receivers, Transceivers

SN74LS645N Description

The SN74LS645N is a high-performance, non-inverting transceiver logic IC chip designed for reliable data transmission and reception in various electronic systems. Manufactured by Texas Instruments, this device is part of the renowned 74LS series, known for its robustness and compatibility with a wide range of digital circuits. The SN74LS645N operates within a supply voltage range of 4.75V to 5.25V, ensuring stable performance across different power supply conditions. It features an operating temperature range of 0°C to 70°C, making it suitable for applications in standard industrial environments.

The SN74LS645N is housed in a through-hole package, specifically a 20-pin DIP (Dual In-line Package), which facilitates easy integration into printed circuit boards (PCBs) and provides a secure mechanical connection. This packaging method is particularly advantageous for applications requiring manual soldering or those where surface-mount technology (SMT) is not feasible.

SN74LS645N Features

• Non-Inverting Transceiver Functionality: The SN74LS645N provides non-inverting data transmission, ensuring that the data signal remains unchanged during transfer. This feature is crucial for maintaining the integrity of digital signals in communication systems.
• 8-Bit Data Handling: With 8 bits per element, the SN74LS645N can efficiently manage byte-wide data transfers, making it ideal for applications requiring high-speed data processing and communication.
• High Current Capability: The device supports an output current of 15mA for high-level signals and 24mA for low-level signals. This high current capacity ensures robust signal drive capabilities, enabling reliable operation even under varying load conditions.
• Compliance and Standards: The SN74LS645N meets stringent industry standards, including REACH Unaffected status and RoHS3 compliance, ensuring that it is environmentally friendly and safe for use in various applications.
• Active Product Status: As an active product, the SN74LS645N benefits from ongoing support and availability, providing customers with a reliable and long-term solution for their digital communication needs.

SN74LS645N Applications

The SN74LS645N is highly versatile and finds applications in a variety of electronic systems, including:

• Data Communication Systems: Ideal for use in local area networks (LANs), data buses, and other communication interfaces where reliable data transmission and reception are critical.
• Industrial Automation: Suitable for control systems and automation equipment that require robust and efficient data handling capabilities.
• Consumer Electronics: Can be used in devices such as printers, scanners, and other peripherals that need to communicate with a host system.
• Telecommunications: Applicable in telecommunication equipment for signal routing and data transfer between different components.

Conclusion of SN74LS645N

The SN74LS645N stands out as a reliable and efficient non-inverting transceiver IC, offering a comprehensive set of features tailored for high-performance digital communication applications. Its robust design, high current capability, and compliance with industry standards make it a preferred choice for engineers and designers. Whether used in industrial automation, consumer electronics, or telecommunications, the SN74LS645N ensures stable and efficient data transmission, making it an indispensable component in modern electronic systems.

SN74LS645N Documents

Download datasheets and manufacturer documentation for SN74LS645N

Datasheets :

SN54LS640-42/644-45, SN74LS640-42/644-45      

HTML Datasheet :

SN54LS640-42/644-45, SN74LS640-42/644-45      

PCN Design/Specification :

Copper Wire Base Alternative 23/Apr/2014       Material Set 30/Mar/2017