SN74AS641DWRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS641DWRG4 is an octal bus transceiver utilizing Advanced Schottky (AS) logic technology, designed for asynchronous two-way communication between data buses. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a low-level output current of 64 mA. The device provides true logic functionality with three-state outputs controlled by direction (DIR) and output-enable (OE) inputs. It is characterized for operation in the commercial temperature range of 0°C to 70°C and is housed in a high-density 20-pin Small-Outline (DW) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides bidirectional data transmission between A and B buses based on the DIR input level
• Features three-state outputs that isolate buses when OE is disabled
• Delivers high drive capability suitable for driving heavy loads

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous two-way communication between data buses
• Memory-to-memory transfers
• Bus-oriented architectures requiring high-speed data routing

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's Package Option Addendum to confirm the exact physical package type and material specifications. Ensure the component meets the required RoHS compliance status and lead finish requirements for your assembly process. Confirm the operating temperature range aligns with your system's environmental constraints before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed performance and strong drive capability are required for bus applications. The AS logic family offers faster switching speeds compared to standard TTL or ALS families. Consider the SOIC-20 package dimensions for PCB layout compatibility. Verify that the 64 mA output current rating matches the load requirements of the destination bus lines.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments SN74AS series of high-speed logic components. It serves as a specialized variant within the broader octal bus transceiver category, distinguished by its Advanced Schottky technology which balances speed and power consumption. It complements other variants like the SN74ALS641A, offering higher drive strength and slightly different electrical characteristics tailored for demanding digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74ALS641ADWR is a compatible alternative within the same product family, though it features lower drive current capabilities. Verify pinout compatibility and ensure the reduced output current of the ALS variant meets the application's load requirements.