MC74LCX541DT

Overview

The MC74LCX541DTG is a low-voltage CMOS octal buffer with flow-through pinout, featuring 3-state non-inverting outputs. It operates from a 1.65 V to 5.5 V supply and supports live insertion. 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 includes IOFF specifications for high impedance when VCC = 0 V.

Feature Summary

• Flow-through architecture allows inputs and outputs to be located on opposite sides of the package, facilitating PCB layout.
• 5 V tolerant inputs and outputs enable safe interfacing between 5 V devices and lower voltage logic systems.
• IOFF specification guarantees high-impedance state during power-down, preventing back-driving of disabled ports.

Applications

• Memory address driving
• TTL level bus oriented transceiver applications
• Clock distribution buffers

Procurement Notes

Verify the specific suffix 'DT' corresponds to the TSSOP-20 package as documented in the ordering information table. Confirm RoHS compliance status by checking for the 'G' suffix or lead-free marking on the component body. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity and traceability.

Selection Notes

Select this component when a wide operating voltage range from 1.65 V to 5.5 V is required. It is suitable for designs needing 5 V tolerance on both input and output lines. Consider the flow-through pinout if board density and routing simplicity are priorities over other buffer configurations.

Part Context

This part belongs to the MC74LCX541 family of octal buffers. It shares functional similarities with the MC74LCX244 but utilizes a distinct flow-through pinout arrangement. The device is designed for high-performance applications requiring low static power consumption and robust ESD protection exceeding 2000 V via the human body model.

Replacement Considerations

MC74LCX541DWG (SOIC-20 package)

FAQ

What is the maximum voltage allowed on the inputs?

The DC input voltage can withstand up to 6.5 V, allowing safe operation with 5 V logic levels while the device operates at lower voltages.

How does the device behave when VCC is 0 V?

The IOFF specification ensures that the outputs enter a high-impedance state when VCC is 0 V, preventing current leakage into the disabled device.