MC74LCX541DWR2G

Overview

The MC74LCX541DWR2G 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 TTL level compatibility. The device provides balanced output sink and source capability of 24 mA at 3 V. Propagation delay ranges from 5.9 ns to 10.3 ns depending on voltage. It supports live insertion and withdrawal, guarantees high impedance when VCC = 0 V via IOFF specification, and exhibits near zero static supply current.

Feature Summary

• Flow-through architecture with 5 V tolerant I/O for direct interface with 5 V TTL logic
• Supports live insertion and withdrawal with guaranteed high impedance during power-off
• Balanced 24 mA output drive capability across the operating voltage range
• Near zero static supply current in all three logic states

Applications

• Memory address driving
• TTL level bus oriented transceiver applications
• High impedance input buffering for reduced driver loading

Procurement Notes

Verify the specific ordering suffix matches the required package type (SOIC-20 or TSSOP-20) and shipping quantity (Tape & Reel or Rail). Confirm that the -Q suffix is not required if automotive qualification and PPAP capability are necessary for the application environment. Ensure ESD handling protocols are followed due to the CMOS technology.

Selection Notes

Select this component when a wide supply voltage range from 1.65 V to 5.5 V is required alongside 5 V tolerance. It is suitable for designs needing flow-through pinouts to simplify PCB layout compared to standard octal buffers. Consider the propagation delay specifications relative to the system clock speed and ensure the 24 mA drive current meets the load requirements.

Part Context

This part belongs to the MC74LCX541 series of low-voltage CMOS octal buffers manufactured by onsemi. It shares functional similarities with the MC74LCX244 but utilizes a flow-through architecture. The series is designed for high-performance applications requiring low power consumption and compatibility with both LVTTL and LVCMOS logic families.

Replacement Considerations

MC74LCX244DWR2G

FAQ

What is the maximum DC input voltage allowed?

The maximum DC input voltage is 6.5 V, allowing safe interfacing with 5 V devices.

How does the device handle power-down conditions?

The IOFF specification guarantees high impedance outputs when VCC is 0 V, preventing back-powering of the device.