74LVC244ABQ,115

Overview

The Nexperia 74LVC244ABQ,115 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 supports overvoltage tolerant inputs up to 5.5 V. The device contains two independent four-bit buffers controlled by separate output enable inputs (1OE and 2OE). It utilizes a 20-terminal DHVQFN package with dimensions of 4.5 mm by 2.5 mm.

Feature Summary

• Provides partial power-down protection via IOFF circuitry to prevent damaging backflow currents when the device is unpowered.
• Features Schmitt-trigger action on all data inputs to ensure tolerance for slow input rise and fall times.
• Supports direct interfacing with TTL levels while maintaining compatibility with mixed 3.3 V and 5 V environments.

Applications

• Partial power-down mode operation in systems requiring isolated power domains
• Bus-oriented transmissions connecting microprocessors to memory or peripheral devices
• Clock distribution and buffering for high-speed digital signals

Procurement Notes

Verify that the specific ordering suffix matches the required thermal enhanced very thin quad flat package configuration. Confirm the temperature range specification aligns with operational requirements, as this variant supports extended industrial temperatures. Ensure compliance with RoHS3 standards and check for any recent product change notifications regarding manufacturing site updates.

Selection Notes

Select this component when an octal buffer with independent control sections is required for low-voltage logic applications. The wide supply voltage range allows flexibility across various system architectures. Consider the DHVQFN package constraints regarding thermal dissipation and board space limitations during layout planning.

Part Context

This part belongs to the 74LVC family of CMOS logic devices designed for low-voltage operations. It serves as a non-inverting buffer solution within the broader Nexperia portfolio of bus drivers and transceivers intended for portable and battery-powered electronics.

Replacement Considerations

The 74LCX244BQX is listed as a substitute option. Verify pinout compatibility and electrical characteristics before implementation.