MC74AC245DW

Buffers, Drivers, Receivers, Transceivers Overview

The MC74AC245DW is an octal bidirectional transceiver with 3-state outputs manufactured by onsemi. It operates within a supply voltage range of 2.0 V to 6.0 V and supports an ambient temperature range from -40°C to +85°C. The device features non-inverting buffers with A and B ports capable of sourcing or sinking 24 mA. Propagation delay is typically 8.5 ns at 5.0 V with a 50 pF load. Input levels are CMOS compatible, and the package is SOIC-20W (Case 751D).

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Bidirectional data path controlled by Transmit/Receive input
• High current sinking capability of 24 mA at both ports
• Three-state outputs for bus-oriented applications

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented data transmission systems
• Memory and memory interface control
• Clock drivers and buffer circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix to confirm the package type and shipping quantity. The 'DW' suffix indicates an SOIC-20 Wide package. Confirm RoHS compliance status and lead-free marking requirements against the latest manufacturer documentation before finalizing procurement specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring high drive current and wide voltage operation. Ensure the application logic levels match the CMOS input thresholds. Consider thermal resistance limits when determining heat dissipation requirements for the SOIC-20 package in enclosed environments.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the MC74AC245 family of octal bus transceivers. It shares functional similarities with the MC74ACT245 but differs in input threshold compatibility. The DW variant specifically denotes the SOIC-20 Wide physical footprint, distinguishing it from TSSOP or standard SOIC options.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

MC74AC245DTG (TSSOP-20 package)

Buffers, Drivers, Receivers, Transceivers FAQ

How does the Output Enable pin affect the device state?

When the Output Enable (OE) input is HIGH, both A and B ports are disabled and placed in a High Z condition, regardless of the Transmit/Receive state.

What determines the direction of data flow?

The Transmit/Receive (T/R) input determines direction. An active-HIGH T/R enables data flow from A to B, while an active-LOW T/R enables data flow from B to A.