MC74AC541N

Overview

The MC74AC541N is an octal buffer and line driver manufactured by onsemi, belonging to the AC logic series. It features eight non-inverting channels with three-state outputs, housed in a 20-pin DIP package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a high-level output current of -24 mA and a low-level output current of 24 mA. Propagation delay is specified at 8 ns at 3.3 V and 6 ns at 5 V. The component supports surface mount or through-hole installation depending on the specific variant, with an operating temperature range from -40°C to +85°C.

Feature Summary

• Three-state outputs allow isolation from the bus when disabled
• Flow-through architecture places inputs and outputs on opposite sides for easier microprocessor interfacing
• Strong drive capability with 24 mA source and sink currents
• Non-inverting logic function

Applications

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

Procurement Notes

Verify the package type carefully, as the 'N' suffix typically denotes a plastic dual in-line package (DIP), whereas other suffixes like 'DW' indicate SOIC. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the specific revision of the datasheet matches the production batch date code to avoid discrepancies in mechanical dimensions or electrical characteristics.

Selection Notes

Select this component when a non-inverting octal buffer with flow-through pinout is required for high-density PCB layouts. It serves as a functional alternative to similar devices like the 74AC240 or 74AC244 but offers distinct input/output positioning advantages for microprocessor interfaces. Consider the 2V to 6V operating range and CMOS technology compatibility with your system's logic levels.

Part Context

This part belongs to the MC74AC540/541 family of octal buffers and line drivers. The MC74AC541 is the non-inverting counterpart to the inverting MC74AC540. Both share identical pinouts and electrical characteristics except for signal polarity. They are designed to replace older logic families while offering faster switching speeds and lower power consumption typical of AC series CMOS devices.

Replacement Considerations

Direct functional substitutes include MC74AC540 (inverting version) and MC74ACT541 (TTL-compatible inputs). Cross-manufacturer equivalents such as SN74AC541 may be compatible if pinouts and electrical specs align.