74LVQ240QSCX

Overview

The onsemi 74LVQ240QSCX is a low voltage octal buffer and line driver with 3-state outputs. It operates within a supply voltage range of 2.0V to 3.6V and supports an operating temperature from -40°C to +85°C. The device features inverting logic, 8 input lines, and 8 output lines housed in a 20-lead QSOP package. Key electrical characteristics include a maximum propagation delay of 10.5ns at 3.3V, high-level output current of -12mA, and low-level output current of 12mA.

Feature Summary

• Implements patented EMI reduction circuitry for improved signal integrity
• Provides guaranteed simultaneous switching noise level and dynamic threshold performance
• Offers improved latch-up immunity compared to standard CMOS devices
• Guarantees incident wave switching into 75Ω transmission lines

Applications

• Memory address drivers
• Clock drivers
• Bus oriented transmitters or receivers

Procurement Notes

Verify the specific ordering code suffix to confirm the package type, as the base part number corresponds to multiple physical packages including SOIC JEDEC, SOIC EIAJ, and QSOP. Ensure the selected variant matches the required footprint for the target PCB design. Confirm RoHS compliance status through official manufacturer documentation prior to finalizing procurement specifications.

Selection Notes

Select this component for applications requiring low power consumption and low noise operation in 3.3V systems. The device is suitable where improved PC board density is necessary due to its octal configuration. Consider the guaranteed dynamic threshold performance if the application involves high-speed data transmission or requires robust noise immunity in electrically noisy environments.

Part Context

This component belongs to the LVQ series of low voltage logic integrated circuits manufactured by Fairchild Semiconductor, now part of onsemi. The LVQ series is designed to provide enhanced performance over standard LV/LVC families, specifically targeting applications that demand reduced electromagnetic interference and higher noise margins while maintaining compatibility with standard logic interfaces.

Replacement Considerations

Direct replacements must match the 20-lead QSOP package and 3.3V operating voltage. Verify pinout compatibility and ensure the substitute device meets the same EMI reduction and latch-up immunity specifications. Check for availability of the 'X' suffix variant if tape and reel packaging is required.