74LVC244APW,118

Overview

The Nexperia 74LVC244APW,118 is an octal buffer and line driver featuring three-state outputs. It operates within a supply voltage range of 1.2 V to 3.6 V and accepts input voltages up to 5.5 V. The device contains two independent output enable inputs (1OE and 2OE), each controlling four outputs. It supports partial power-down mode via IOFF circuitry and includes Schmitt-trigger action on all data inputs.

Feature Summary

• Provides eight non-inverting buffered outputs with three-state capability controlled by separate enable signals.
• Features overvoltage tolerant inputs allowing direct interfacing with 5 V devices while operating at lower supply voltages.
• Includes IOFF circuitry to prevent backflow current during partial power-down conditions.
• Incorporates Schmitt-trigger action on all inputs to ensure tolerance for slow rise and fall times.

Applications

• Buffering memory address and data lines in computing systems
• Driving bus-oriented transceivers in communication interfaces
• Clock distribution and buffering in digital circuits
• Voltage level translation between mixed 3.3 V and 5 V environments

Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm that the temperature range aligns with operational requirements. Check for any recent product change notices regarding pinout or electrical specifications. Ensure compliance with RoHS directives if applicable to the target market.

Selection Notes

Select this component when an octal buffer with high noise immunity is required. The wide supply voltage range allows flexibility in system design. The overvoltage tolerant inputs simplify interface design with legacy 5 V logic without additional level shifting components.

Part Context

This part belongs to the 74LVC family of low-voltage CMOS logic. It shares functional similarities with other octal buffers but offers specific voltage tolerance characteristics. The TSSOP-20 package provides a compact solution for surface-mount applications requiring multiple buffered channels.

Replacement Considerations

Direct replacements include the 74LVCH244APW,118 variant which adds bus hold functionality. Other compatible parts from different manufacturers may require verification of pin compatibility and electrical parameters before substitution.