SN74LS641-1N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS641-1N is an octal bus transceiver from the Texas Instruments LS logic family, housed in a 20-pin PDIP package. It features open-collector outputs and bidirectional data transfer capability controlled by a single direction input. The device operates within a supply voltage range of 4.75 V to 5.25 V and supports a commercial operating temperature range of 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver with open-collector outputs
• Bidirectional data transfer capability
• Single-direction control input

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data communication on buses
• Memory-to-memory transfers
• I/O port expansion

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'N' corresponds to the PDIP (plastic dual-in-line) package variant. Confirm RoHS compliance status for the specific production lot, as indicated by the NIPDAU lead finish. Ensure the component meets the required commercial temperature specifications for the intended application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when open-collector outputs are required for wired-AND configurations or interfacing with different voltage domains. The LS series offers standard propagation delays suitable for general-purpose digital systems. Verify that the load capacitance requirements do not exceed the specified limits for reliable operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LS64x family of octal bus transceivers. Unlike the SN74LS640/645 which feature three-state outputs, the SN74LS641/642 variants utilize open-collector outputs. This distinction determines the pull-up resistor requirements and electrical characteristics for system design.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS641N

Buffers, Drivers, Receivers, Transceivers FAQ

What type of output stage does the SN74LS641-1N use?

It uses open-collector outputs.

Is the data flow unidirectional or bidirectional?

The device supports bidirectional data transfer controlled by a direction input.