SN74LVTZ244DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVTZ244DW is an octal buffer and line driver utilizing Advanced BiCMOS technology, designed for low-voltage 3.3-V VCC operation with TTL interface capability to 5-V systems. It features two independent 4-bit drivers with separate output-enable inputs. The device supports mixed-mode signal operation, allowing 5-V input and output voltages while operating on a 3.3-V supply. It maintains high-impedance states during power-up and power-down and includes active bus-hold circuitry to eliminate external pullup resistors. The SN74LVTZ244DW is characterized for operation from -40°C to 85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation with 5-V tolerant inputs and outputs while powered by a 3.3-V supply
• Features active bus-hold data inputs to maintain valid logic levels without external pullup resistors
• Provides high-impedance state during power-up and power-down sequences
• Configured as two independent 4-bit non-inverting buffers with separate output-enable controls

Buffers, Drivers, Receivers, Transceivers Applications

• TTL-to-CMOS level translation in mixed-voltage system environments
• Memory address and data bus driving applications
• Clock distribution and buffering circuits
• General-purpose digital signal buffering

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant, as the DW suffix denotes a plastic small-outline package. Confirm that the design requires the standard commercial temperature range (-40°C to 85°C) rather than the military grade SN54 variant. Ensure the application utilizes a 3.3-V supply voltage compatible with the recommended operating conditions. Check for RoHS compliance status if environmental regulations apply to the manufacturing process.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing 5-V logic devices with 3.3-V CMOS systems requiring octal buffering. The SN74LVTZ244 is suitable for applications needing high-impedance states during power transitions. Consider the SN54LVTZ244 if military temperature ranges are required. This device is appropriate for designs prioritizing low static power dissipation and simplified board layout due to integrated bus-hold functionality.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the LVTZ family of Texas Instruments logic products, which are based on Advanced BiCMOS technology. The Z suffix typically indicates a specific package or tape-and-reel configuration within the broader LVT series. These devices are engineered for low-voltage applications, offering performance characteristics similar to older LVC or LV families but with enhanced drive capabilities and mixed-signal tolerance.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN54LVTZ244 (Military temperature range)

Buffers, Drivers, Receivers, Transceivers FAQ

Does the SN74LVTZ244 support 5-V input signals?

Yes, the device supports mixed-mode signal operation, allowing it to accept 5-V input voltages even when powered by a 3.3-V supply.

What is the function of the bus-hold circuitry?

The active bus-hold circuitry holds unused or floating data inputs at a valid logic level, eliminating the need for external pullup resistors.