74ABT2244DB,118

Buffers, Drivers, Receivers, Transceivers Overview

The NXP USA Inc. 74ABT2244DB,118 is an octal buffer and line driver featuring 30Ω series termination resistors within a 20-pin SSOP Type II package. It operates on a DC supply voltage range of 4.5V to 5.5V with an operating temperature range from -40°C to +85°C. The device provides high-speed performance with propagation delays ranging from 1.0ns to 5.6ns depending on conditions. Output drive capability includes +5mA for high-level and -32mA for low-level states. Inputs are disabled during 3-State mode, and the device supports live insertion and extraction.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus interface with integrated 30Ω series termination resistors in both high and low output states to reduce line noise without external components.
• Dual output enable inputs (1OE, 2OE) control four 3-state outputs each, allowing flexible bus management.
• Power-up 3-state functionality ensures safe initialization, while inputs remain disabled during the 3-state mode.
• High ESD protection exceeding 2000V per MIL STD 883 Method 3015 and latch-up protection exceeding 500mA.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers
• Clock drivers
• Bus receivers and transmitters

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring octal buffering with integrated series termination to minimize signal reflections. Ensure the design environment supports the specified 4.5V to 5.5V supply voltage and that the 20-pin SSOP Type II package fits the PCB layout constraints. Consider the propagation delay specifications relative to system clock speeds.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, known for high-performance BiCMOS technology combining low power dissipation with high speed. It serves as a direct replacement for the 74ABT244-1, reflecting updated industry naming standards while maintaining identical functional characteristics and pinouts.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The datasheet explicitly identifies the 74ABT2244 as functionally identical to the 74ABT244-1. Verify pinout compatibility if substituting with other octal buffers in the 74ABT series.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the purpose of the internal 30Ω series resistance?

The internal 30Ω series resistance eliminates the need for external termination resistors, reducing line noise in applications such as memory address drivers and clock drivers.

How does the device handle power-up states?

The device features power-up 3-state functionality, ensuring outputs are in a high-impedance state upon power application to prevent bus contention.