74LCX16244MTDX

Overview

The onsemi 74LCX16244MTDX is a low-voltage CMOS 16-bit bus buffer and line driver featuring 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 offers symmetrical output impedance with minimum drive currents of 24mA for both high and low states. It incorporates power-down protection on inputs and outputs and ensures ESD protection exceeding 2000V (HBM). The component is housed in a TSSOP-48 package.

Feature Summary

• Provides 16-bit non-inverting buffering with three-state control for efficient data bus management.
• Features 5V tolerant inputs and outputs, enabling safe interfacing between 3.3V logic and 5V signal environments.
• Includes power-down protection to prevent excessive current draw when the device is unpowered.
• Delivers balanced propagation delays and high-speed operation suitable for PCI bus applications.

Applications

• High-speed data bus buffering in portable and battery-powered electronic devices
• Interface bridging between 3.3V microprocessors and 5V peripheral components
• PCI bus level translation and signal driving

Procurement Notes

Verify the specific suffix 'MTDX' against official manufacturer documentation to confirm tape-and-reel packaging and lead-free status. Confirm RoHS compliance details directly from the datasheet. Ensure the selected variant matches the required operating temperature range and package dimensions for your PCB layout.

Selection Notes

Select this component for designs requiring 16-bit wide data paths with strict low-power constraints. It is appropriate where 5V tolerance is necessary to interface with legacy or mixed-voltage systems. Consider the TSSOP-48 footprint availability and ensure the application benefits from the specified 4.5ns propagation delay characteristics.

Part Context

This part belongs to the 74LCX family of low-voltage CMOS logic devices. It serves as a direct pin-compatible replacement for older 74HC or 74HCT series buffers while offering significantly lower power consumption and faster switching speeds. The LCX series is optimized for modern 3.3V and 2.5V system architectures.

Replacement Considerations

Cross-reference with STMicroelectronics 74LCX16244 or Toshiba TC74LCX16244 for functional equivalents. Verify that alternative manufacturers provide identical 5V tolerance specifications and matching package outlines before substitution.