SN74LS240DB

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS240DB is an octal buffer and line driver manufactured by Texas Instruments, belonging to the 74LS logic family. It features eight non-inverting buffers with three-state outputs, housed in a 20-pin SOIC surface-mount package. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a low-level output current of 24 mA. Designed for through-hole or surface-mount applications, it functions reliably across a temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight non-inverting buffer channels for signal driving
• Features three-state outputs for bus-oriented systems
• Supports high-capacitance loads via open-collector-like drive capability

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus-oriented architectures

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'DB' corresponds to the SOIC-20 package variant when sourcing. Confirm RoHS compliance status as manufacturing practices evolve. Ensure the supplier provides official datasheets matching the SN74LS240 designation to avoid confusion with similar 74LS series components like the SN74LS244.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when eight buffered channels with three-state control are required for digital logic interfacing. It is suitable for designs needing moderate drive strength and standard TTL compatibility. Consider thermal management for surface-mount implementations and verify pinout compatibility with existing PCB footprints.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments 74LS (Low-power Schottky) logic family, known for improved speed over standard TTL while maintaining lower power consumption. The SN74LS240 specifically addresses the need for octal buffering with tri-state functionality, widely used in microprocessor-based systems for data and address bus isolation.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include SN74LS244 and SN74LS241 from Texas Instruments, which share similar octal buffer characteristics. Cross-vendor equivalents such as those from ON Semiconductor or Fairchild may also be considered if pinouts and electrical specifications align with the original design requirements.