SN74AS245DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS245DWR is an octal bus transceiver from Texas Instruments' Advanced Schottky (AS) logic family. It features eight bidirectional data channels with non-inverting true outputs and three-state capabilities. The device operates within a supply voltage range of 4.5 V to 5.5 V and utilizes a 20-pin Small Outline Integrated Circuit (SOIC) package. Designed for high-speed asynchronous communication, it includes direction control and output enable inputs to manage data flow between buses while minimizing external timing requirements.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Advanced Schottky technology provides high-speed operation with reduced propagation delay compared to standard LS series devices.
• Eight-bit bidirectional architecture allows simultaneous data transfer between two independent buses under direction control.
• Three-state outputs isolate the device from the bus when disabled, preventing signal contention.

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed memory mapping systems
• Clock drivers and buffered oscillators
• Multiplexer/de-multiplexer applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'DWR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the Advanced Schottky (AS) logic level meets the system's speed and power constraints, as it differs significantly from other 74xx families. Ensure compatibility with the target operating temperature range and voltage specifications before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when higher switching speeds than LS or ALS families are required without the complexity of AC/ACT logic. Consider the trade-off between the AS family's speed and its higher power consumption relative to CMOS alternatives like AHC. Verify that the 20-pin SOIC footprint fits the available PCB space and that the drive current capabilities match the bus load requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74AS245 family of octal bus transceivers. It serves as a high-performance alternative to the SN74LS245 and SN74ALS245, offering faster propagation delays suitable for demanding digital interfaces. The DWR suffix indicates surface-mount packaging in a reel configuration, distinguishing it from through-hole or tube-packaged variants within the same logical family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

• SN74AS245DW