74LVC244AD,118

Overview

The Nexperia 74LVC244AD,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. The device contains two independent output enable inputs (1OE and 2OE), each controlling four outputs. It supports partial power-down mode via IOFF circuitry. Inputs are overvoltage tolerant up to 5.5 V. Propagation delay ranges from 1.5 ns to 15.8 ns depending on voltage. Output drive capability reaches ±24 mA.

Feature Summary

• Provides eight buffered outputs with three-state control for bus-oriented applications
• Includes IOFF circuitry to prevent backflow current during partial power-down states
• Features Schmitt-trigger inputs to tolerate slow rise and fall times
• Accepts direct interface with TTL logic levels despite low-voltage operation

Applications

• Memory module address and data bus drivers
• Clock distribution buffers in mixed-voltage systems
• I/O port expansion for microcontrollers
• Signal buffering between different voltage domains

Procurement Notes

Verify the specific ordering suffix matches the required package type. Confirm that the component version aligns with the latest product data sheet revision. Ensure environmental compliance requirements such as RoHS status are documented for the intended manufacturing process. Check lead time availability through authorized distributors before finalizing design-in decisions.

Selection Notes

Select this component when designing circuits requiring eight buffered channels with high-impedance state control. It is suitable for applications needing tolerance to slower input transitions due to Schmitt-trigger action. Consider the 1.2 V to 3.6 V operating range for low-power digital designs. Verify that the SO20 package dimensions fit the available PCB footprint constraints.

Part Context

This part belongs to the 74LVC family of logic devices manufactured by Nexperia. It shares functional similarities with other octal buffers but is distinguished by its specific LVC technology characteristics. The AD suffix indicates the SO20 plastic small outline package variant. It serves as a standard solution for bidirectional bus driving in consumer electronics.

Replacement Considerations

Check for equivalent parts like the 74LVCH244AD if bus hold functionality is required. Verify pin compatibility with alternative manufacturers offering similar octal buffer specifications. Ensure voltage tolerances match the system requirements when substituting.