SN74LVT244AN

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVT244AN is a 3.3-V octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2.7 V to 3.6 V. The device provides high drive capability with a low-level output current of 64 mA and a high-level output current of -32 mA. It exhibits a typical propagation delay of 2.3 ns at 3.3 V. The component supports mixed-mode operation and includes an Ioff feature for partial power-down protection. It is housed in a 20-pin PDIP package and functions across a temperature range of -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight independent non-inverting buffer channels with three-state outputs for bus-oriented architectures.
• Supports mixed-mode voltage operation allowing interfacing between different voltage domains.
• Includes Ioff circuitry to prevent excessive current draw when the device is powered down.
• Designed for low-voltage 3.3-V systems while maintaining compatibility with legacy 5-V logic environments.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address and data bus drivers
• Clock distribution networks
• Bidirectional bus transceivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix to confirm the package type, as the base model number may correspond to multiple physical packages such as PDIP or SOIC. Ensure the selected variant matches the required thermal performance and pin configuration for the target PCB layout. Cross-reference the manufacturer's latest datasheet revision to confirm compliance with current RoHS standards and material declarations before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring high-speed signal buffering in 3.3-V logic systems. The wide operating voltage range allows flexibility in system design. Consider the package constraints and thermal requirements when choosing between through-hole and surface-mount variants. Verify that the load capacitance and drive strength requirements align with the specified output current capabilities to ensure signal integrity.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVT244A series of octal buffers and line drivers. It is designed specifically for low-voltage 3.3-V VCC operation but offers versatility for broader voltage ranges. The series is optimized for improving density and performance in memory address drivers, clock drivers, and bus receivers. It represents a standard solution for digital signal routing in embedded systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes include the SN74LVTH244ANSR and SN74ABT244AN. Verify pinout compatibility and electrical specifications such as propagation delay and output current when substituting. Ensure the alternative package type meets the mechanical constraints of the existing design.

Buffers, Drivers, Receivers, Transceivers FAQ

Does the SN74LVT244AN support mixed-mode voltage operation?

Yes, the device supports mixed-mode voltage operation, allowing inputs to be driven by voltages from either 3.3-V or 5-V VCC systems.

What is the purpose of the Ioff feature in this device?

The Ioff feature ensures that if the device is powered down, the outputs will not back-feed current into the power supply, supporting partial power-down mode operation.