MC74AC541DWG

Overview

The MC74AC541DWG is an octal buffer and line driver manufactured by onsemi, belonging to the AC logic series. It features non-inverting outputs with a flow-through architecture where inputs and outputs are located on opposite sides of the package. The device operates within a supply voltage range of 2 V to 6 V and supports three-state outputs. Key electrical parameters include a maximum high-level output current of -24 mA and a low-level output current of 24 mA. Propagation delay is specified as 8 ns at 3.3 V and 6 ns at 5 V. The component is housed in a 20-SOIC surface-mount package and functions within a temperature range of -40 °C to +85 °C.

Feature Summary

• Flow-through pinout architecture facilitates easier interface to microprocessors and improves PCB layout density.
• Three-state outputs allow isolation from the bus when the output enable signal is inactive.
• TTL-compatible inputs ensure direct interfacing with TTL logic circuits.

Applications

• Memory and address drivers
• Clock drivers
• Bus-oriented transmitter/receivers

Procurement Notes

Verify the specific suffix 'DWG' confirms the SOIC-20 package and lead-free status. Confirm RoHS compliance and moisture sensitivity level (MSL 3) requirements for your assembly process. Ensure the operating voltage range of 2V to 6V aligns with your system design, as this differs from the ACT variant which is restricted to 4.5V to 5.5V.

Selection Notes

Select the MC74AC541DWG over the MC74ACT541DWG if a wider supply voltage range (2V–6V) is required. Choose this non-inverting version when signal polarity must be preserved. Consider the MC74AC540DWG if inverted outputs are needed instead. Verify that the 24 mA drive current meets the load requirements of the connected circuitry.

Part Context

This component is part of the MC74AC540/541 family of octal buffers. It shares functional similarities with the MC74AC240/244 series but utilizes a distinct flow-through pinout arrangement. This specific layout positions inputs and outputs on opposite sides of the package, optimizing space efficiency for microprocessor output ports compared to traditional parallel I/O configurations.

Replacement Considerations

MC74AC541DWR2G: Reel-packaged alternative with identical electrical specifications and functionality.

FAQ

Is the MC74AC541DWG compatible with 3.3V logic levels?

Yes, the device operates within a supply voltage range of 2 V to 6 V, making it suitable for 3.3 V applications.

What is the difference between the MC74AC541 and MC74AC540?

The MC74AC541 provides non-inverting outputs, while the MC74AC540 provides inverted outputs. Both share the same package and electrical characteristics.