SN74LVC244ARWPR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC244ARWPR is an octal buffer and line driver manufactured by Texas Instruments, belonging to the LVC logic family. It operates within a supply voltage range of 1.65V to 3.6V and features three-state outputs. The device is organized into two independent four-bit buffers, each with its own output enable (OE) input. Designed for asynchronous communication between data buses, it supports mixed-mode signal operation on all ports, allowing inputs to accept voltages up to 5.5V while operating at lower VCC levels. The component utilizes TSSOP-20 packaging.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operations across all ports, enabling compatibility between 5V tolerant inputs and lower voltage supplies.
• Includes IOFF functionality to facilitate live insertion, partial power-down modes, and back-drive protection.
• Features independent output enable inputs that allow separate control of two four-bit buffer sections.
• Provides high impedance states during power-up or power-down sequences when OE is held high.

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• Clock driving and buffering applications
• Memory address drivers in low-voltage systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'R' indicates tape and reel packaging configuration distinct from standard tube variants. Confirm the 'A' designation aligns with current manufacturing revisions. Ensure the order matches the required TSSOP-20 footprint and pinout specifications for your PCB layout. Cross-reference the manufacturer's latest datasheet for any updates on recommended operating conditions or thermal characteristics before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring 1.65V to 3.6V operation with high-speed buffering capabilities. It is suitable for applications needing 5V tolerance on inputs despite lower supply voltages. Consider the two-channel architecture if independent control of data paths is necessary. Evaluate the propagation delay specifications against your system timing requirements to ensure signal integrity is maintained.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC244 series of octal buffers and line drivers. It shares functional similarities with other members like the SN74LVC244APWR but differs in packaging format. The LVC series is characterized by low voltage CMOS technology, offering reduced power consumption compared to older logic families while maintaining high-speed performance suitable for modern portable and industrial electronics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC244APWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle mixed-mode signals?

The SN74LVC244ARWPR supports mixed-mode signal operations on all ports, allowing it to interface with 5V tolerant inputs even when powered by lower voltages such as 3.3V or 1.8V.

What is the function of the IOFF feature?

The IOFF feature ensures that outputs are disabled when the device is powered down, preventing back-driving of the power supply and supporting live insertion and partial power-down modes.