SN74LS646SG

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS646SG is an octal bus transceiver manufactured by Advanced Micro Devices. It features non-inverting logic with a single element handling eight bits per element. The device provides three-state outputs, allowing for effective bus management in digital systems. It is housed in a 24-pin SOIC package. This component belongs to the LS (Low-power Schottky) logic family, designed for high-speed operation with reduced power consumption compared to standard TTL. It serves as a critical interface for data transfer between microprocessors and memory or peripheral devices.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight-bit data transmission capability
• Non-inverting logic function for direct signal path preservation
• Three-state output architecture enabling multiple drivers on a shared bus
• Low-power Schottky technology for improved speed and efficiency

Buffers, Drivers, Receivers, Transceivers Applications

• Microprocessor-to-memory data bus interfacing
• Bidirectional data buffering in computer systems
• Peripheral device communication interfaces
• General-purpose octal bus transceiver applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the manufacturer designation carefully, as Advanced Micro Devices (AMD) historically produced this part, but current availability may involve legacy stock or authorized distributors. Confirm the package type is 24-SOIC and check for any specific ordering suffixes that might indicate temperature range or tape-and-reel packaging. Ensure the source provides valid traceability for original components.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal, non-inverting, three-state bus transceiver is required within Low-power Schottky logic constraints. Consider the 24-SOIC package size for PCB layout compatibility. Evaluate system voltage levels against LS logic standards. Compare propagation delays and drive capabilities if higher performance is needed, potentially looking at LVC or HCT alternatives for different voltage domains.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the SN74LS series, a widely used family of digital logic ICs. The SN74LS646 specifically addresses the need for bidirectional data flow control. Its design supports standard TTL-compatible inputs while offering the benefits of low-power dissipation. It remains relevant in systems requiring robust, high-speed data transfer over an eight-bit wide bus.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for cross-reference parts like SN74LS646N or other manufacturers' equivalents such as TI's SN74LS646. Verify pinout compatibility and electrical characteristics before substitution. Note that some modern replacements may operate at different voltage levels.