SN74LVCZ244ADW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVCZ244ADW is an octal buffer and line driver manufactured by Texas Instruments, designed for operation within a supply voltage range of 2.7 V to 3.6 V. It features two independent 4-bit drivers with separate output-enable inputs. The device supports mixed-mode signal operation, allowing inputs to accept voltages up to 5.5 V while operating at 3.3 V. It includes Ioff circuitry for partial-power-down support and power-up three-state functionality to prevent bus contention during hot insertion.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation on all ports, enabling compatibility between 5-V input devices and 3.3-V systems.
• Includes Ioff circuitry that disables outputs when the device is powered down to prevent damaging current backflow.
• Features power-up three-state circuitry that places outputs in a high-impedance state during power transitions.

Buffers, Drivers, Receivers, Transceivers Applications

• Servers
• Databases
• Memory Systems
• Network Switches
• PCs and Notebooks

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant against the datasheet orderable addendum, as the SN74LVCZ244A family includes SSOP, SOIC, NS, and TSSOP options. Confirm the suffix indicates the DW (SOIC) package type. Ensure design compliance with the recommended operating conditions regarding supply voltage and temperature ranges before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring translation between 5-V logic levels and 3.3-V systems. The device is suitable for designs needing live insertion capabilities due to its integrated Ioff and power-up three-state features. Consider the thermal resistance values provided in the datasheet when designing for high ambient temperatures or dense PCB layouts.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVCZ244A series of octal buffers and drivers. The 'Z' designation typically denotes specific manufacturing revisions or environmental compliance updates within the LVC family. It shares functional similarities with other octal drivers but is optimized for low-voltage CMOS performance and robust input tolerance characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LVC244ADW

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial-power-down scenarios?

The device utilizes Ioff circuitry to automatically disable the outputs when VCC is low, preventing damaging current backflow through the device into the powered-down system.

What is the maximum input voltage allowed?

Inputs can be driven from either 3.3-V or 5-V devices, accepting voltages up to 5.5 V regardless of the VCC level.