74ABT2244CPC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ABT2244CPC is an octal buffer and line driver housed in a 20-PDIP package. It operates within a supply voltage range of +4.5V to +5.5V and supports an ambient temperature range of -40°C to +85°C. The device features non-inverting logic with three-state outputs, providing high-level output current of -32mA and low-level output current of 15mA. Propagation delay is specified at 4.4ns maximum at 5V. It includes integrated 25Ω series resistors in the outputs.

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/receivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized channels as this part number is discontinued by the manufacturer. Confirm that the 20-PDIP package matches the design requirements. Ensure compatibility with existing PCB footprints and verify that the ABT logic family specifications meet the system's electrical constraints before finalizing procurement plans.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when driving high-capacitance loads such as memory or address buses without requiring external series resistors. The ABT technology offers speed comparable to LS-TTL with CMOS power consumption. Verify that the 20-pin DIP form factor fits the assembly process and that the 4.5V to 5.5V operating range aligns with the system power supply.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ABT logic family, which combines the speed of Advanced Bipolar TTL with the low power consumption of CMOS technology. It is designed for high-performance digital applications requiring fast switching speeds and robust drive capabilities. The specific model integrates output protection features suitable for complex bus architectures.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers include SN74ABT2244AN from Texas Instruments.

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 does the device behave during power transitions?

It maintains high-impedance, glitch-free bus loading during the entire power-up and power-down cycle.