SN74ACT245NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ACT245NSR is an octal bus transceiver with three-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features inputs compatible with TTL voltage levels. The device supports asynchronous two-way communication between data buses, utilizing direction control (DIR) and output enable (OE) signals. It is housed in a 20-pin SOP package and provides a maximum propagation delay of 8 ns at 5 V.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides asynchronous bidirectional data transfer between two 8-bit buses
• Features three-state outputs for effective bus isolation when disabled
• Includes direction control logic to manage signal flow between A and B ports

Buffers, Drivers, Receivers, Transceivers Applications

• Pro Audio systems
• Video and Signage equipment
• Appliances
• Factory Automation and Control

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'SR' corresponds to the tape and reel packaging format required for automated assembly processes. Confirm that the SOP-20 package dimensions align with the target printed circuit board layout constraints. Ensure the operating temperature range meets the environmental specifications of the final application design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring robust bus interfacing with TTL-compatible input thresholds. The ACT series offers balanced drive capabilities suitable for minimizing output ringing on standard loads. Consider the 20-pin SOP footprint when evaluating space limitations compared to alternative packages like TSSOP or SOIC.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4ACT245 family of octal bus transceivers. The family includes variants such as SN74ACT245DWR and SN74ACT245PWR, which share identical electrical characteristics but differ in physical packaging. The NS suffix specifically denotes the Standard Outline Package form factor.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ACT245DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the Output Enable pin function?

When the OE pin is low, the device passes noninverted data based on the DIR input level. When OE is high, the device enters a high-impedance state, effectively isolating the buses.

What is the input voltage tolerance?

The inputs accept voltages up to 5.5 V, making them tolerant to overvoltage conditions even if the supply voltage is lower than 5.5 V.