74LCX16244MEAX

Overview

The onsemi 74LCX16244MEAX is a low-voltage CMOS 16-bit bus buffer featuring non-inverting logic and three-state outputs. It operates within a supply voltage range of 2.0V to 3.6V, providing high-speed performance with a maximum propagation delay of 4.5ns at VCC = 3V. The device incorporates 5V tolerant inputs and outputs, allowing safe interfacing between 3.3V systems and 5V signal environments. It includes power-down protection to maintain high-impedance states during low-power modes.

Feature Summary

• Provides sixteen non-inverting buffers with independent 3-state control for each nibble
• Features 5V tolerant I/Os compatible with mixed 3.3V and 5V logic levels
• Includes power-down protection to prevent excessive current draw when VCC is off

Applications

• Memory address and data bus drivers in portable computing devices
• Clock distribution networks requiring low skew and high speed
• Bus-oriented transmitter/receiver circuits in communication modules

Procurement Notes

Verify the specific suffix MEAX against the manufacturer's current datasheet to confirm package type and tape-and-reel specifications. Ensure compatibility with RoHS directives if required by your assembly process. Cross-reference the part number with official onsemi documentation to validate pinout integrity and electrical characteristics before finalizing procurement.

Selection Notes

Select this component for designs requiring 16-bit buffering with mixed-voltage tolerance. It is suitable for applications needing symmetrical output drive capabilities and low quiescent current. Consider the TSSOP or similar small-outline package availability for space-constrained PCB layouts. Verify that the operating voltage range aligns with the system's 3.3V power rail requirements.

Part Context

This device belongs to the 74LCX family of low-voltage CMOS logic ICs. It serves as a direct replacement for older 74HC or 74HCT series buffers in modern low-power applications. The LCX series is characterized by its ability to interface directly with 5V peripherals while operating at lower supply voltages, making it ideal for battery-powered electronics.

Replacement Considerations

Compatible substitutes include the STMicroelectronics 74LCX16244 and Nexperia 74LCX16244. These parts share identical logical functions and pinouts. Verify that alternative manufacturers offer the same MEAX suffix configuration for equivalent packaging and handling specifications.