SN74ALB16244DL

Overview

The SN74ALB16244DL is a 16-bit buffer and line driver with 3-state outputs manufactured by Texas Instruments. It utilizes Advanced Low-Voltage BiCMOS (ALB) technology designed for 3.3-V operation. The device features Schottky diodes on all inputs to eliminate overshoot and undershoot, and distributed VCC and GND pins to minimize high-speed switching noise. It operates within a supply voltage range of 3 V to 3.6 V and an operating temperature range of -40°C to 85°C. Key electrical characteristics include a typical propagation delay of 1.3 ns at 3.3 V, symmetrical active-low output-enable inputs, and a maximum high-level output current of -25 mA.

Feature Summary

• Advanced Low-Voltage BiCMOS (ALB) technology optimized for high-speed, low-voltage 3.3-V applications
• Schottky diodes integrated on all inputs to prevent signal overshoot and undershoot
• Distributed power and ground pin architecture designed to reduce high-speed switching noise
• Flow-through logic architecture intended to optimize printed circuit board layout efficiency

Applications

• High-speed data bus buffering in speed-critical signal paths
• Line driving for memory modules and backplane interconnects
• Clock distribution networks requiring precise timing control
• System-level I/O expansion where 3.3-V logic compatibility is required

Procurement Notes

Verify the specific ordering suffix 'DL' corresponds to the SSOP-48 tube package configuration. Confirm that the component status aligns with project requirements, as datasheet addendums may indicate production lifecycle changes. Ensure input voltage ratings are respected to maintain device reliability under absolute maximum conditions.

Selection Notes

Select this component when designing systems requiring 3.3-V logic levels with minimal propagation delay. The ALB technology offers superior performance compared to standard CMOS alternatives. Verify that the SSOP-48 package dimensions fit the available PCB real estate. Consider the thermal impedance specifications if multiple devices operate simultaneously in confined spaces.

Part Context

This device belongs to Texas Instruments’ Widebus family, which provides industry-standard pinouts for 16-bit wide data buses. The SN74ALB16244 series is engineered to replace conventional drivers in applications demanding faster switching speeds. It supports configurations as four 4-bit buffers, two 8-bit buffers, or a single 16-bit buffer depending on system architecture needs.

Replacement Considerations

SN74ALB16244DGGR

FAQ

How does the SN74ALB16244 handle input signal integrity?

The device incorporates Schottky diodes on all inputs specifically designed to eliminate overshoot and undershoot, ensuring stable signal transitions during high-speed operation.

What is the function of the distributed VCC and GND pins?

The distributed power and ground pins are strategically placed to minimize high-speed switching noise generated during simultaneous output state changes.