SN74ALS746DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS746DWR is an octal buffer and line driver from Texas Instruments' ALS logic family, housed in a 20-pin SOIC package. It operates within a 4.5 V to 5.5 V supply range with a maximum quiescent current of 8 mA. The device features input pull-up resistors and provides non-inverting buffering for eight channels. It supports TTL input levels and delivers high-output drive capability with low-level output currents up to 24 mA and high-level output currents of -15 mA. The component functions reliably across a commercial temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates internal pull-up resistors on all inputs to ensure defined logic states when disconnected
• Provides non-inverting signal buffering for eight independent data lines
• Delivers high-drive output capability suitable for bus-oriented applications

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Multiplexer receivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific datasheet revision and ordering suffix to confirm the SOIC-20 package type and reel packaging configuration. Ensure compatibility with existing 5V logic systems and check that the operating temperature range meets the environmental requirements of the target application design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when eight-channel non-inverting buffering with built-in input pull-ups is required. It serves as a direct replacement for standard 74ALS746 devices in designs needing defined idle states on bus lines. Consider the 24 mA low-level sink capability for driving moderate capacitive loads or multiple fan-out requirements in digital systems.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments SN74ALS series, which offers advanced low-power Schottky logic performance. The SN74ALS746 specifically addresses the need for buffered outputs with inherent input biasing, distinguishing it from standard buffers that require external pull-up components for undefined state management in open-collector or high-impedance scenarios.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the internal pull-up resistors?

The internal pull-up resistors ensure that the inputs remain at a valid high logic level when not actively driven by a source, preventing floating inputs.

Is the SN74ALS746DWR inverting or non-inverting?

The SN74ALS746DWR is a non-inverting buffer, meaning the output logic state follows the input logic state directly.