SN74LS243D

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS243D is a quad bus transceiver manufactured by Texas Instruments. It features four non-inverting bus transceivers in a single package, designed for high-speed data transfer applications. The device operates with TTL input levels and utilizes a standard SOIC-14 surface-mount package. Key electrical specifications include a propagation delay time of 18 ns and a supply voltage range typical for LS logic families. This component serves as a bidirectional interface between different logic systems or buses.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Quad configuration providing four independent non-inverting bus transceivers within a single integrated circuit package
• Compatible with TTL input logic levels for straightforward integration into existing digital systems
• Utilizes push-pull output stages to drive loads effectively across the specified operating temperature range

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data transmission between microprocessors and peripheral devices
• Isolation of bus lines in complex digital communication architectures
• Level shifting interfaces between different logic families requiring non-inverting signal paths

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify end-of-life status carefully as this specific part number is marked obsolete by the manufacturer. Confirm availability of recommended substitutes such as the SN74LS243DR variant if new production units are required. Ensure that the SOIC-14 footprint matches your PCB design constraints before finalizing procurement decisions for legacy system maintenance.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a quad non-inverting bus transceiver with TTL compatibility is required. The 18 ns propagation delay suits moderate-speed digital applications. Consider the SOIC-14 package size for space-constrained designs. Verify that the operating voltage range aligns with your system's power supply specifications to ensure reliable operation without additional level-shifting circuitry.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments 74LS series of logic integrated circuits. The LS designation indicates Low-power Schottky technology, which offers a balance between speed and power consumption. As a bus transceiver, it facilitates efficient data movement across multiple lines, serving as a critical interface element in digital electronics and computer architecture systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74LS243DR is listed as a recommended substitute by the manufacturer. Both parts share identical functional characteristics and pinout configurations. Verify that the tape-and-reel packaging of the DR variant meets your assembly requirements compared to the tube-packaged D variant.