74LVQ244MTR

Overview

The 74LVQ244MTR is a low voltage CMOS octal bus buffer with non-inverted 3-state outputs manufactured by STMicroelectronics. It utilizes sub-micron silicon gate and double-layer metal wiring C2MOS technology. The device operates within a supply voltage range of 2V to 3.6V, supporting data retention at 1.2V. Key electrical characteristics include a typical propagation delay of 5.6 ns at VCC = 3.3V and symmetrical output impedance with minimum drive currents of 12mA at VCC = 3.0V. It features PCI bus levels guaranteed at 24 mA and 75Ω transmission line output drive capability.

Feature Summary

• Octal bus buffer architecture with two groups of four buffers controlled by separate G inputs
• Low noise performance with reduced dynamic low voltage quiet output specifications
• Enhanced latch-up immunity and protection circuits against static discharge for all inputs and outputs
• Balanced propagation delays ensuring symmetrical switching behavior

Applications

• Memory address drivers in 3-state systems
• PCI bus level applications requiring guaranteed drive capabilities
• Low power and low noise 3.3V system designs
• Transmission line driving with 75Ω impedance compatibility

Procurement Notes

Verify the specific package type required, as the MTR suffix corresponds to the SOP-20 tape and reel configuration. Confirm that the operating environment falls within the recommended temperature range of -55°C to 125°C. Ensure input voltage levels remain between 0V and VCC to prevent damage. Check for RoHS compliance status if environmental regulations apply to the final assembly process.

Selection Notes

Select this component when an octal buffer with 3-state control is needed for 3.3V logic interfaces. It is suitable for designs requiring TTL output compatibility and low power dissipation. Consider the 75Ω transmission line drive capability for signal integrity in high-speed applications. Verify that the 2V to 3.6V operating voltage range aligns with the system power supply constraints.

Part Context

This part belongs to the 74LVQ series of low voltage CMOS logic devices from STMicroelectronics. It is functionally compatible with the standard 74 Series 244 pinout and logic functions. The LVQ series is designed specifically for low power and low noise applications compared to standard LVC or LVX families. It represents an evolution in sub-micron C2MOS technology for robust digital buffering.

Replacement Considerations

Direct substitutes must maintain octal 3-state buffer functionality and 74 Series 244 pin compatibility. Verify that alternative parts support the 2V to 3.6V operating voltage range and offer similar propagation delay characteristics. Ensure replacement components provide comparable latch-up immunity and ESD protection levels.