74LVQ244QSCX

Overview

The onsemi 74LVQ244QSCX is a low voltage octal buffer and line driver featuring 3-state outputs. It operates within a supply voltage range of 2.0V to 3.6V and supports an operating temperature range of -40°C to +85°C. The device provides propagation delays with maximum values of 14.0ns at 2.7V and 9.5ns at 3.3V under 50pF load conditions. It offers high output drive capability with ±12mA current ratings and includes two independent output enable inputs for bus-oriented applications.

Feature Summary

• Implements patented EMI reduction circuitry to minimize electromagnetic interference during switching operations.
• Guarantees simultaneous switching noise levels and dynamic threshold performance for stable signal integrity.
• Provides improved latch-up immunity to enhance device reliability under electrical stress conditions.

Applications

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

Procurement Notes

Verify the specific package variant, as the base part number covers multiple packages including SOIC and QSOP. Confirm RoHS compliance status through official documentation. Check for obsolescence notices from the manufacturer. Ensure the ordering suffix matches the required physical footprint. Validate lead times directly with authorized distributors.

Selection Notes

Select this component for low power and low noise applications requiring 3.3V operation. Consider the guaranteed incident wave switching into 75Ω transmission lines for high-speed interface designs. Evaluate the 4kV minimum ESD immunity rating for robustness in sensitive environments. Compare propagation delay specifications against system timing requirements.

Part Context

This device belongs to the LVQ logic family, designed for low voltage digital applications. It serves as an octal buffer and line driver suitable for improving PC board density. The technology utilizes CMOS processes to achieve low static power consumption while maintaining fast switching speeds.

Replacement Considerations

Check for direct pin-compatible alternatives within the same logic family. Verify that substitute parts meet the 2.0V to 3.6V operating voltage range. Ensure replacement devices offer similar 3-state output capabilities and propagation delay characteristics.

FAQ

What is the maximum quiescent supply current?

The maximum quiescent supply current is 40.0 µA when the input voltage is at VCC or GND.

Does the device support transmission line driving?

Yes, incident wave switching into transmission lines with impedances as low as 75Ω is guaranteed for the commercial temperature range.