SN74ALVTH16244KR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALVTH16244KR is a 16-bit buffer and line driver utilizing Advanced BiCMOS (ABT) technology, designed for 2.5-V or 3.3-V VCC operation with 5-V I/O compatibility. It features four independent 4-bit buffers within a single package. The device supports mixed-mode signal operation, allowing 5-V input and output voltages while powered by 3.3 V. Key electrical characteristics include high drive capability of -32 mA/64 mA and typical VOLP (Output Ground Bounce) less than 0.8 V at VCC = 3.3 V. It operates over an extended temperature range from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Advanced BiCMOS (ABT) design ensures low static-power dissipation during 3.3-V operation.
• Active bus-hold circuitry maintains unused or floating data inputs at valid logic levels without external resistors.
• Ioff and power-up 3-state support enables safe hot-insertion applications by preventing damaging current backflow.
• Auto-3-State functionality eliminates bus current loading when the output voltage exceeds the supply voltage.

Buffers, Drivers, Receivers, Transceivers Applications

• Mixed-mode signal environments requiring TTL interface to 5-V systems
• Unregulated battery operation down to 2.3 V
• Hot-insertion applications using Ioff and power-up 3-state

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'KR' against the manufacturer's official documentation, as it indicates a Microstar Junior package configuration which may differ from standard SSOP or TSSOP variants. Confirm that the component status aligns with production requirements, noting that related DL and GR packages are listed as obsolete in some addendums. Ensure the selected variant meets the required thermal impedance and moisture sensitivity level specifications for the intended assembly process.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring 16-bit buffering with high drive strength and 5-V tolerance on a 3.3-V core. The ABT technology provides superior performance regarding ground bounce compared to standard CMOS. Consider the specific package constraints of the KR variant, which utilizes a fine-pitch BGA format suitable for high-density layouts. Verify that the operating temperature range of -40°C to +85°C satisfies the environmental conditions of the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Widebus family of logic ICs from Texas Instruments. It is part of the ALVTH series, which combines the speed of LVC technology with the drive strength of LVTH. The SN74ALVTH16244 is functionally similar to other 16-bit buffers but is distinguished by its specific ABT process node and 5-V tolerant inputs, making it suitable for bridging different voltage domains in complex digital systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALVTH16244DL

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle floating inputs?

The SN74ALVTH16244KR includes active bus-hold circuitry that holds unused or floating data inputs at a valid logic level, eliminating the need for external pullup or pulldown resistors.

What is the mechanism for preventing damage during hot insertion?

The device incorporates Ioff circuitry that disables outputs when powered down to prevent backflow, and power-up 3-state circuitry that places outputs in a high-impedance state during power-up to prevent driver conflict.