SN74ALS642A-1NS

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS642A-1NS is an octal bus transceiver from the Texas Instruments ALS logic family, housed in a 20-pin SOIC package. It operates on a single supply voltage ranging from 4.5 V to 5.5 V and supports a commercial temperature range of 0°C to +70°C. The device features TTL-compatible input and output levels with three-state outputs for effective bus isolation. It provides eight bidirectional data channels with a propagation delay of 25 ns and offers a low-level output current capability of 24 mA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bidirectional data transfer between two buses
• Three-state outputs for system bus isolation
• TTL-compatible input and output voltage levels

Buffers, Drivers, Receivers, Transceivers Applications

• Memory mapping circuits
• Clock drivers
• Bus-oriented transmissions

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix '1N' against the official datasheet to confirm pinout and electrical characteristics match your design requirements. Ensure the SOIC-20 footprint aligns with your PCB layout. Confirm RoHS compliance status through the manufacturer's documentation before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-speed octal data transfer with bus hold capabilities. The ALS series offers improved speed over standard LS logic while maintaining lower power consumption than AS series devices. Verify that the 24 mA sink current meets the load requirements of your destination circuitry.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS642A family of octal bus transceivers. It is functionally similar to the SN74LS642 but utilizes Advanced Low-power Schottky technology for faster switching speeds. The '1' suffix typically denotes specific pinout or electrical variations within the ALS family compared to the standard SN74ALS642.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74ALS642AN
• SN74LS642DW

Buffers, Drivers, Receivers, Transceivers FAQ

What is the logic family of the SN74ALS642A-1NS?

It belongs to the Advanced Low-power Schottky (ALS) logic family.

Does the SN74ALS642A-1NS have three-state outputs?

Yes, it features three-state outputs to allow safe connection to shared bus lines.