74LCX244MTR

Overview

The STMicroelectronics 74LCX244MTR is a low-voltage CMOS octal bus buffer with non-inverted, three-state outputs. It utilizes sub-micron silicon gate and double-layer metal wiring C2MOS technology for high-speed operation at 3.3V while maintaining low power consumption. The device supports 5V tolerant inputs and outputs, allowing direct interfacing with 5V signal environments. It features balanced propagation delays and symmetrical output impedance, making it suitable for memory address drivers and bus-oriented transmitter/receiver applications.

Feature Summary

• Octal bus buffer with non-inverting, three-state outputs
• 5V tolerant inputs and outputs for mixed voltage interfacing
• High-speed performance with balanced propagation delays
• Power-down protection on inputs and outputs

Applications

• Memory address drivers
• Clock drivers
• Bus-oriented transmitter/receiver circuits

Procurement Notes

Verify the specific ordering code against the manufacturer's current documentation to ensure compatibility with the SOP-20 package and tape-and-reel configuration. Confirm that the component meets all required operating temperature ranges and electrical specifications for your design environment before finalizing procurement decisions.

Selection Notes

Select this component when an octal buffer with three-state control is required for 3.3V logic systems interfacing with 5V environments. Ensure the application demands high-speed data transfer with minimal skew and requires robust ESD protection characteristics alongside low quiescent supply current.

Part Context

This part belongs to the 74LCX series of low-voltage CMOS logic devices manufactured by STMicroelectronics. It is functionally compatible with the standard 74 series 244 pinout but operates at lower voltages. The 'MTR' suffix indicates the specific packaging and reel format used for surface-mount assembly.

Replacement Considerations

Check for cross-manufacturer equivalents such as Fairchild or ON Semiconductor 74LCX244 variants. Verify pin compatibility and electrical parameters like propagation delay and output drive strength before substituting.