SN74LS540DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS540DWR is an octal buffer and line driver manufactured by Texas Instruments, belonging to the SN74LS logic series. It features eight inverting inputs with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.75 V to 5.25 V. Key electrical characteristics include a high-level output current of -15 mA and a low-level output current of 24 mA. Propagation delay is specified at 15 ns when operating at 5 V. The component supports surface-mount installation and functions reliably within a temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight inverting channels for signal buffering and line driving applications
• Features three-state outputs allowing direct connection to bus structures
• Utilizes bipolar LS logic technology for defined switching performance

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific datasheet revision and manufacturing date code upon procurement. Confirm that the SOIC-20 package dimensions match the target PCB footprint requirements. Ensure the supply voltage remains strictly within the 4.75 V to 5.25 V limits to prevent device malfunction or damage. Check for any RoHS compliance documentation if required by the final assembly specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when inverting octal buffering with three-state capability is required in a standard TTL-compatible environment. The LS series offers a balance of speed and power consumption suitable for general-purpose digital systems. Consider the 15 ns propagation delay against system timing constraints. Verify that the 0°C to +70°C operating temperature range meets the environmental conditions of the intended application.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the widely used SN74LS540 family of octal buffers. It serves as a standard interface component for connecting microprocessors to memory or peripheral devices. The device is designed to drive heavy loads and maintain signal integrity across bus lines. Its three-state feature allows multiple devices to share a common data path without interference.