MC74LCX541DW

Overview

The MC74LCX541DW is a low-voltage CMOS octal buffer with flow-through pinout and 3-state non-inverting outputs. It operates from a 1.65 V to 5.5 V supply, featuring 5 V-tolerant inputs and outputs for safe interfacing with 5 V devices. The device provides 24 mA balanced output sink and source capability at 3 V. Propagation delay ranges from 5.9 ns to 10.3 ns depending on voltage. It supports live insertion, offers near-zero static supply current, and includes IOFF specifications to guarantee high impedance during power-off states.

Feature Summary

• Provides 5 V tolerance on both inputs and outputs, enabling direct interface between 5 V TTL logic and lower voltage systems.
• Features a flow-through architecture where data inputs are located on one side of the package and outputs on the opposite side.
• Supports live insertion and withdrawal applications through dedicated IOFF specifications that ensure high-impedance states when VCC is zero.

Applications

• Memory address driving
• TTL level bus oriented transceiver applications
• Interface between 5 V systems and 3 V systems

Procurement Notes

Verify the specific ordering suffix to confirm the package type and shipping quantity. The 'DW' suffix indicates a SOIC-20 Wide Body package. Ensure the presence of the 'G' suffix if lead-free compliance is required. Confirm whether the part is supplied in tubes or tape and reel formats based on the full order code.

Selection Notes

Select this component when a non-inverting octal buffer with flow-through pinout is required for low-voltage designs. It is suitable for applications needing 5 V tolerance and high noise immunity. Consider the MC74LCX244 if an inverting option is preferred, as it shares similar functional characteristics but differs in output polarity.

Part Context

This device belongs to the LCX series of low-voltage CMOS logic components manufactured by onsemi. It is functionally similar to the MC74LCX244 but utilizes a flow-through pinout arrangement. The series is designed for high-speed operation while maintaining low power dissipation, making it appropriate for portable and battery-operated equipment.

Replacement Considerations

MC74LCX244DWG: Functionally equivalent inverting octal buffer with similar electrical characteristics.

FAQ

What is the maximum input voltage allowed for the MC74LCX541DW?

The DC input voltage can range from -0.5 V to +6.5 V, allowing the inputs to be safely driven by 5 V devices despite the lower operating supply voltage.

How does the device handle power-down conditions?

The IOFF specification guarantees that the outputs enter a high-impedance state when VCC is 0 V, preventing back-feeding into the power supply.