MC74AC541DTR2

Overview

The MC74AC541DTR2G is an octal buffer and line driver manufactured by onsemi, belonging to the AC logic family. It features non-inverting outputs with three-state capability, allowing for high-impedance isolation when disabled. The device operates within a supply voltage range of 2.0 V to 6.0 V and supports output currents of ±24 mA. Packaged in a TSSOP-20 configuration, it provides propagation delays of up to 9.0 ns at 3.3 V and 6.5 ns at 5.0 V. Designed for memory, address, and clock driving applications, it utilizes a flow-through architecture suitable for microprocessor interfaces.

Feature Summary

• Three-state outputs enable bus-oriented transmitter/receiver functionality and signal isolation.
• Flow-through architecture places inputs and outputs on opposite sides of the package for simplified PCB layout.
• Non-inverting logic design ensures output signals match input polarity.

Applications

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

Procurement Notes

Verify the complete part number includes the 'G' suffix (MC74AC541DTR2G) to confirm lead-free packaging compliance as specified in the ordering information. Ensure the 'DT' suffix corresponds to the TSSOP-20 package type required for your board design. Confirm that the 'R2' designation aligns with tape and reel shipping specifications rather than tube packaging.

Selection Notes

Select this component when a non-inverting octal buffer with three-state control is required for 2V to 6V logic systems. The flow-through pinout is optimal for designs prioritizing trace routing efficiency between microprocessors and peripheral devices. Consider the AC series for broader voltage flexibility compared to ACT variants, which are restricted to 4.5V to 5.5V operation.

Part Context

This device is part of the MC74AC540/541 series, where the 541 variant specifically provides non-inverting outputs, contrasting with the inverted outputs of the 540 model. It shares functional similarities with the MC74AC240 and MC74AC244 series but distinguishes itself through its specific flow-through pin arrangement. The DTR2G suffix indicates a TSSOP-20 package supplied in a tape and reel format.

Replacement Considerations

MC74AC541DWR2G: Identical logical function and electrical characteristics housed in a SOIC-20 package instead of TSSOP-20. Verify footprint compatibility before substitution. MC74ACT541DTR2G: Offers TTL-compatible inputs but is limited to a 4.5V to 5.5V supply range, unlike the 2V to 6V capability of the AC series.