74LVC16244ABX,518

Overview

The Nexperia 74LVC16244ABX,518 is a discontinued 16-bit buffer and line driver featuring 3-state outputs. It supports a supply voltage range of 1.2 V to 3.6 V with inputs and outputs tolerant up to 5.5 V. The device includes four independent output enables (nOE) controlling groups of four outputs each. It incorporates IOFF circuitry for partial power-down protection and Schmitt-trigger action on all data inputs to tolerate slow rise and fall times.

Feature Summary

• Provides 5 V tolerant input/output interfacing for mixed logic environments
• Includes IOFF circuitry to disable outputs and prevent backflow current during power-down
• Features Schmitt-trigger inputs for improved noise immunity and tolerance of slow signal transitions

Applications

• Translating signals between 3.3 V and 5 V logic domains
• Driving high-capacitance transmission lines as a line driver
• Buffering parallel data buses in computing systems

Procurement Notes

This specific part number is obsolete and no longer manufactured by Nexperia. Verification of availability should focus on the successor package variants listed in the datasheet, such as the ADGG or ADGV suffixes. Sourcing must rely on authorized distributors or secondary market channels, as standard production supply has ceased.

Selection Notes

Designers requiring this functionality should select from currently active packages within the same family, specifically those ending in ADGG or ADGV. These alternatives maintain identical electrical specifications and pinouts while offering modern packaging options like TSSOP48 and TVSOP48. Ensure the selected variant meets the required thermal dissipation and operating temperature ranges.

Part Context

The 74LVC16244A belongs to the Nexperia 74LVC logic family, designed for low-voltage CMOS applications. This component serves as a 16-bit version of the standard octal buffer architecture, providing enhanced bus driving capabilities. It is engineered for multibyte flow-through architectures commonly found in memory interfaces and system control buses.

Replacement Considerations

Public confirmed substitute part numbers include 74LVC16244ADGG and 74LVC16244ADGV.