SN74ALS641A-1NS

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS641A-1NS is an octal bus transceiver from the Texas Instruments ALS series, housed in a 20-pin PDIP package. It features true outputs and open-collector output characteristics with direction control functionality. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a load capacitance of 50 pF. It is designed for temperatures ranging from 0 °C to 70 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver architecture with single functional unit
• Open-collector output configuration providing true polarity
• Integrated direction control mechanism for data flow management

Buffers, Drivers, Receivers, Transceivers Applications

• Memory mapping applications requiring bidirectional data transfer
• Bus-oriented communications systems utilizing TTL input levels
• Control logic circuits managing high-capacitance loads

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'N' corresponds to the plastic DIP-20 package variant when sourcing. Confirm that the open-collector output requirement aligns with system pull-up resistor designs. Ensure the operating temperature range meets environmental specifications. Check for RoHS compliance status as manufacturing processes evolve. Validate pinout compatibility against existing PCB footprints before integration.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when open-collector outputs are necessary for wired-AND configurations or interfacing with varying voltage domains. The ALS series offers improved speed-power product compared to standard TTL. Verify that the 50 pF load capacitance rating suits the connected transmission lines. Consider the PDIP package constraints if surface mount space is limited.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS641 family of octal bus transceivers. It shares architectural similarities with the SN74ALS645 but differs in output stage design. The ALS series represents a low-power Schottky technology iteration. It serves as a bridge between microprocessors and peripheral devices in digital logic systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS641AN-1 is a documented equivalent variant.