SN74ALS641A-1N

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS641A-1N is an octal bus transceiver from the Texas Instruments ALS series, housed in a 20-pin PDIP package. It features true (non-inverting) outputs with open-collector configuration and direction control functionality. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports TTL input levels with TTL output levels. It is designed for bidirectional data transmission between two buses, utilizing a single directional control signal to determine data flow.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver architecture providing eight independent bidirectional data channels
• Open-collector output structure enabling wired-OR connections and flexible load driving
• Direction control pin manages data flow orientation between port A and port B

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data bus interfacing between microprocessors and memory modules
• Isolation of system buses in high-speed digital logic circuits
• Data buffering and level shifting in TTL-compatible logic systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'AN' against current manufacturer datasheets to confirm package type and electrical characteristics. Confirm availability status as older ALS series components may be discontinued or subject to obsolescence notices. Ensure compatibility with existing PCB footprints for 20-pin DIP packages before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when non-inverting octal data transfer with open-collector outputs is required. The ALS series offers improved speed and power consumption compared to standard LS logic. Verify that the open-collector nature aligns with pull-up resistor requirements in the target circuit design.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS641 family of octal bus transceivers. It serves as a bridge for data movement in complex digital systems. The 'ALS' designation indicates Advanced Low-power Schottky technology, balancing performance and power efficiency for general-purpose logic applications.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for direct equivalents such as SN74ALS641A-1DW or SN74ALS641ADWR if surface-mount options are acceptable. Verify functional compatibility with SN74ALS621 variants if pinout differences are manageable.