74ABT2244CMSA

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ABT2244CMSA is an octal buffer and line driver housed in a 20-lead Shrink Small Outline Package (SSOP). It operates within a supply voltage range of +4.5V to +5.5V and supports ambient temperatures from -40°C to +85°C. The device features non-inverting logic with two active-low output enable inputs controlling four outputs each. Integrated 25Ω series resistors are included in the output paths. Propagation delays range from 1.0ns to 4.4ns, while output drive capabilities include a maximum high-state current of -32mA and a low-state current of 15mA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrated 25Ω series resistors in the outputs reduce signal ringing and eliminate the need for external components.
• Provides high-impedance, glitch-free bus loading throughout the entire power-up and power-down cycle.
• Supports nondestructive hot-insertion capability for system reliability.

Buffers, Drivers, Receivers, Transceivers Applications

• Driving capacitive inputs of MOS memory drivers
• Address drivers
• Clock drivers
• Bus-oriented transmitters and receivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package designation MSA20 corresponds to the 20-lead SSOP configuration required for your PCB layout. Confirm that the operating environment remains within the specified -40°C to +85°C temperature range and that the supply voltage does not exceed the recommended limits. Ensure proper handling procedures are followed as the component may be obsolete or subject to lifecycle changes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when driving multiple capacitive loads such as memory or address buses without requiring external termination resistors. The integrated 25Ω resistors simplify board design by minimizing signal reflections. Verify that the required propagation delay fits within the system timing constraints, noting the maximum delay of 4.4ns under worst-case conditions.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the ABT logic family, designed for high-speed applications using BiCMOS technology. It serves as an octal buffer suitable for parallel data transmission systems. The CMSA suffix specifically identifies the Shrink Small Outline Package variant, distinguishing it from standard SOIC or TSSOP versions within the same functional family.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: None identified in source material.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the internal resistors?

The device includes 25Ω series resistors in the outputs to reduce ringing and remove the requirement for external resistors.

How are the outputs controlled?

The eight outputs are divided into two groups of four, controlled by separate active-low Output Enable inputs (OE1 and OE2).