74LCXH16244MTDX

Overview

The 74LCXH16244MTDX is a low-voltage, 16-bit buffer manufactured by onsemi. It operates within a supply voltage range of 1.65 V to 3.6 V and features 3.6 V tolerant inputs and outputs. The device provides high-speed performance with maximum propagation delays of 2.5 ns at 3.0–3.6 V, 3.0 ns at 2.3–2.7 V, and 6.0 ns at 1.65–1.95 V. It includes active bus hold circuitry to maintain valid logic states for unused or floating inputs. Static supply current is approximately 20 µA across all logic states.

Feature Summary

• Non-inverting 16-bit buffer design optimized for very high-speed operation in low-voltage systems
• Active bus hold circuitry eliminates the need for external pull-up resistors on unused or floating inputs
• Supports live insertion and withdrawal capabilities for system flexibility
• IOFF specification ensures high-impedance output state when power is removed

Applications

• High-speed data buffering in 1.8 V, 2.5 V, and 3.3 V digital systems
• Bus-oriented applications requiring non-inverting signal transmission
• Systems necessitating live insertion and withdrawal support
• Interfaces requiring 3.6 V tolerant input/output handling

Procurement Notes

Verify component authenticity through official onsemi channels or authorized distributors. Confirm package integrity and pin alignment against TSSOP-48 specifications. Check date codes and lot numbers for traceability. Ensure storage conditions comply with moisture sensitivity levels prior to soldering. Validate that the specific suffix matches the required reel packaging configuration.

Selection Notes

Select this component for applications demanding low static power consumption alongside high-speed signal integrity. The 3.6 V tolerance allows compatibility with mixed-voltage interfaces without level shifting. Active bus hold simplifies PCB layout by removing external pull-up requirements. Consider the propagation delay specifications relative to the target operating voltage to ensure timing compliance.

Part Context

This part belongs to the 74VCXH series of advanced CMOS logic devices designed for low-voltage operation. It serves as a non-inverting buffer within the broader family of 16-bit logic components. The LCXH designation indicates specific electrical characteristics tailored for 2.5 V and 3.3 V systems, distinguishing it from standard voltage counterparts.

Replacement Considerations

Cross-reference with other 16-bit non-inverting buffers featuring 3.6 V tolerance and active bus hold. Verify pinout compatibility and electrical parameters such as propagation delay and drive strength. Ensure the substitute supports the same supply voltage range and package type.