SN74LS641N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS641N is an 8-bit bus transceiver belonging to the LS TTL logic series. It features true outputs and open-collector output characteristics within a 20-pin PDIP plastic package. The device includes direction control functionality for bidirectional data transfer between two ports. It operates with a maximum temperature rating of 70 °C and supports a load capacitance of 45 pF.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides 8-bit bidirectional data transmission capability
• Features true output polarity configuration
• Utilizes open-collector output structure

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus interfacing in digital systems
• I/O expansion modules requiring direction control
• Memory interface circuits using TTL logic levels

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific part number corresponds to the Texas Instruments manufacturing origin, as indicated by the SN prefix. Confirm the package type matches the required DIP-20 form factor. Ensure the logic family aligns with existing LS TTL design constraints. Check for compliance with RoHS standards if applicable to the target assembly process. Validate the operating temperature range against system thermal requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an 8-bit bidirectional transceiver with open-collector outputs is required. The LS series offers standard TTL compatibility. Consider the open-collector nature for wired-OR applications or level shifting needs. Verify that the 20-pin DIP package fits the available board space. Ensure the direction control pin is properly managed in the circuit design.

Buffers, Drivers, Receivers, Transceivers Part Context

This component is part of the broader 74LS641 family of bus transceivers. Similar variants include the SN74LS641ND and SN74ALS641AN-1. These devices share the core function of 8-bit data transfer but may differ in speed, power consumption, or package options. The SN74LS641N specifically denotes the standard LS speed grade in a DIP package.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74LS641ND is a documented alternative from Motorola/NXP offering identical logical functions and pinout compatibility. Other LS series transceivers may serve as functional substitutes if electrical parameters like drive strength and voltage levels are compatible.