SN74ABT162825DL

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ABT162825DL is an 18-bit buffer and line driver from Texas Instruments' Widebus family, housed in a 56-pin SSOP package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 10 ns/V transition rates. The device features two independent 9-bit buffers with active-low output enable inputs (OE1, OE2). Outputs are designed to source or sink up to 12 mA and include equivalent 25-Ω series resistors. Typical output ground bounce is less than 1 V at 5 V supply.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrated 25-ohm series resistors on outputs eliminate the need for external components to reduce signal overshoot and undershoot.
• Dedicated Ioff circuitry disables outputs during power-down to prevent damaging current backflow through the device.
• Power-up three-state circuitry automatically places outputs in a high-impedance state during power transitions to prevent driver conflicts.
• Flow-through architecture optimizes printed circuit board layout for improved performance and density.

Buffers, Drivers, Receivers, Transceivers Applications

• 3-state memory address drivers
• Clock drivers
• Bus-oriented receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix to confirm the package type and temperature rating. The DL suffix indicates a plastic small-outline package suitable for commercial temperatures. Ensure the design accounts for the required pullup resistor on the OE pin to maintain high-impedance states during power cycles. Confirm that the selected variant matches the intended operating environment specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring high-density 18-bit data buffering with integrated termination. The built-in series resistors simplify PCB layout by removing external components. Consider the device's hot-insertion capabilities if the system requires safe insertion while powered. Verify that the 5V supply requirement aligns with the rest of the system logic levels.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the ABT logic family, which utilizes BiCMOS technology for high-speed operation. It is part of the Widebus family, characterized by integrated output resistors. The SN74ABT162825 serves as a non-inverting buffer, providing true data transmission. It is functionally similar to other 18-bit bus transceivers but offers specific integration benefits for noise reduction.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ABT162825DLR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle hot-insertion?

The device supports hot-insertion through Ioff circuitry, which disables outputs when powered down, and power-up three-state circuitry, which ensures outputs remain high-impedance during power-on sequences.

What is the purpose of the internal series resistors?

The equivalent 25-ohm series resistors are integrated into the outputs to reduce signal overshoot and undershoot, eliminating the need for external termination resistors.