74LCX2244SJ

Overview

The Fairchild Semiconductor 74LCX2244SJ is an octal buffer and line driver belonging to the LCX logic series. It features eight non-inverting inputs driving three-state outputs, fabricated using advanced CMOS technology for high-speed operation with low power dissipation. The device operates within a supply voltage range of 2.3 V to 3.6 V. Key electrical parameters include a propagation delay of 8.5 ns at 2.7 V and 7.5 ns at 3.3 V. Output drive capabilities are specified as -12 mA for high-level output current and 12 mA for low-level output current. The component supports surface mount installation in a SOP-20 package and functions reliably across an industrial temperature range from -40 °C to +85 °C.

Feature Summary

• Octal configuration providing eight independent non-inverting signal paths
• Three-state output architecture enabling bus-oriented system designs
• Advanced CMOS fabrication ensuring high speed alongside low power consumption
• Input tolerance allowing direct interface between 5V and 3V logic systems

Applications

• Bus-oriented memory and address drivers
• Clock buffering and distribution circuits
• High-speed data acquisition systems
• Telecommunications equipment requiring level shifting

Procurement Notes

Verify manufacturer authenticity through official documentation or authorized channels. Confirm RoHS compliance status and specific packaging details such as tube quantity versus reel options. Check for obsolescence notices as this part may be discontinued by onsemi. Ensure the SOP-20 package variant matches design requirements before procurement.

Selection Notes

Select this component when designing systems requiring octal buffering with three-state control. It is suitable for applications needing interface between 5V and 3V domains due to input tolerance. Consider the 8.5 ns propagation delay at lower voltages for timing constraints. Verify that the SOP-20 package fits the PCB layout and thermal management needs.

Part Context

This device is part of the 74LCX family, which represents low-voltage CMOS logic optimized for performance and power efficiency. Originally manufactured by Fairchild Semiconductor, production rights have transitioned to onsemi. The 74LCX2244SJ specifically addresses the need for high-density buffering in portable and battery-powered electronics where low voltage operation is critical.

Replacement Considerations

Public confirmed substitute part numbers include DM74LCX244SJX and 74LCX244MTCX.