SN74ALS646A-1NT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS646A-1NT is an octal registered bus transceiver from Texas Instruments' ALS logic family, housed in a 24-pin PDIP package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports TTL input and output levels. The device features three-state outputs with a low-level output current of 24 mA and a high-level output current of -15 mA. It exhibits a propagation delay of 30 ns and functions within a temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal registered architecture providing data storage and bidirectional bus transfer capabilities
• Three-state outputs for effective bus line isolation and multi-driver system integration
• TTL-compatible input and output voltage levels ensuring interoperability with standard logic families

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus architectures requiring registered buffering
• Memory-to-memory or memory-to-I/O data transfers in computer systems
• Control signal routing in industrial automation equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix '1NT' against the manufacturer's official datasheet to confirm the exact pinout, electrical characteristics, and package variant. Ensure compatibility with existing PCB footprints and thermal requirements before finalizing procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require eight-bit registered data latching combined with bus driving capabilities. It is suitable for applications needing moderate speed performance with TTL level compatibility and robust drive strength for standard bus loads.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS646A series of octal bus transceivers. It is distinct from non-registered variants like the SN74ALS645A by including internal D-type flip-flops for data retention. The device serves as a key interface element in digital logic designs requiring controlled data flow and temporary storage.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS646ADW is a surface-mount equivalent in SOIC-24 packaging. SN74ALS646A-1N is the through-hole alternative without the '-1' speed grade designation.