SN74LVC162244AZQLR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC162244AZQLR is a 16-bit buffer and driver with 3-state outputs from the Texas Instruments Widebus family. It operates on a supply voltage range of 1.65 V to 3.6 V and features inputs tolerant to 5.5 V, facilitating mixed-mode signal operation in systems utilizing both 3.3-V and 5-V logic levels. The device includes equivalent 26-Ω series resistors at the output ports to minimize overshoot and undershoot without requiring external components. It supports live insertion and partial power-down modes through Ioff circuitry, which prevents damaging backflow currents when the device is unpowered. The component provides symmetrical active-low output-enable inputs for precise bus control.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Operates within a wide voltage range of 1.65 V to 3.6 V while accepting 5.5 V input signals for mixed-voltage system compatibility.
• Incorporates integrated 26-Ω series output resistors to reduce signal reflections and eliminate the need for external termination components.
• Features Ioff circuitry that disables outputs during partial power-down or live insertion to prevent backflow current damage.

Buffers, Drivers, Receivers, Transceivers Applications

• Motor drive systems
• Network switch interfaces
• Power infrastructure management
• Test and measurement equipment

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package configuration required for your design, as the ZQL suffix indicates a BGA format distinct from standard SSOP or TSSOP variants. Confirm that the 56-ball GQL or ZQL pinout aligns with your PCB footprint, as pin assignments differ significantly from other packages in the SN74LVC162244A family. Ensure that the ordering information matches the exact revision and material specifications listed in the latest TI Package Option Addendum to avoid compatibility issues.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing high-density bus-oriented receivers or transmitters requiring 16-bit width in a compact form factor. It is suitable for applications needing down-voltage translation between 5-V and lower voltage domains. Consider this part if the design requires robust ESD protection exceeding JESD standards and latch-up performance greater than 100 mA per JESD 78 Class II guidelines.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74LVC162244A family of 16-bit buffers and drivers. While many variants utilize surface-mount packages like SSOP-48 or TSSOP-48, the ZQL suffix denotes a Ball Grid Array (BGA) implementation. This family is engineered to improve performance and density in memory address drivers and clock drivers, offering a versatile solution for complex digital interconnects.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include SN74LVC162244ADGGR, SN74LVC162244ADGVR, and SN74LVC162244ADLR. Note that these alternatives use different physical packages (TSSOP, TVSOP, SSOP) compared to the ZQL BGA variant. Verify pin compatibility and thermal requirements before substituting, as mechanical dimensions and thermal resistance values vary across package types.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle partial power-down scenarios?

The SN74LVC162244AZQLR utilizes Ioff circuitry to automatically disable the outputs when VCC is zero. This feature prevents damaging current backflow through the device when it is powered down but connected to a live bus.

What is the function of the internal series resistors?

The output ports contain equivalent 26-Ω series resistors designed to reduce overshoot and undershoot on the signal lines. This integration eliminates the requirement for external resistors in most applications.

Can this device interface directly with 5-V logic sources?

Yes, the inputs are designed to accept voltages up to 5.5 V regardless of the VCC supply level. This allows the device to function as a translator in mixed 3.3-V/5-V system environments.