74ABT2244CSJ

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ABT2244CSJ is an octal buffer and line driver belonging to the ABT logic series. It features a 20-lead Small Outline Package (SOP) with EIAJ TYPE II dimensions of 5.3mm width. The device operates within a supply voltage range of +4.5V to +5.5V and supports an ambient temperature range of -40°C to +85°C. Key electrical parameters include a propagation delay of up to 4.4 ns at 5V, output high current of -32 mA, and output low current of 15 mA. It incorporates non-inverting logic with three-state outputs controlled by two active-low enable inputs.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates 25 ohm series resistors in the outputs to 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 capabilities for system reliability.

Buffers, Drivers, Receivers, Transceivers Applications

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

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package marking matches M20D specifications for the 20-lead SOP variant. Ensure compliance with JEDEC J-STD-020B lead-free standards. Review datasheet revision history for any design updates prior to integration into final assemblies.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when driving high-capacitance loads requiring integrated termination resistance. The ABT series offers faster switching speeds compared to standard ALS or LS families. Verify that the 25 ohm internal resistors align with the target transmission line impedance requirements. Ensure the operating voltage remains strictly within the 4.5V to 5.5V range for optimal performance.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the broader 74ABT2244 family, which includes variants in SOIC, SSOP, and TSSOP packages. Originally manufactured by Fairchild Semiconductor, the product line has been transitioned to onsemi. The CSJ suffix specifically denotes the 20-lead SOP package configuration.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct pin-compatible substitutes may exist within the same logic family from other manufacturers. Verify electrical characteristics such as propagation delay and output drive strength against original specifications before substitution.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the function of the internal 25 ohm resistors?

The internal 25 ohm resistors are placed in series with the outputs to reduce signal ringing and eliminate the requirement for external series resistors.

How does the device behave during power transitions?

The device maintains high-impedance, glitch-free bus loading during the entire power-up and power-down cycle to prevent data corruption.