74LVQ244SJX

Overview

The onsemi 74LVQ244SJX is an octal buffer and line driver featuring three-state outputs, designed for low-power and low-noise applications. It operates within a supply voltage range of 2.0V to 3.6V and supports temperatures from -40°C to +85°C. The device implements patented EMI reduction circuitry and guarantees incident wave switching into 75Ω transmission lines. Propagation delay ranges from 2.0ns to 14.0ns depending on voltage and temperature. It provides improved latch-up immunity and features a 4kV minimum ESD immunity rating.

Feature Summary

• Implements patented EMI reduction circuitry for signal integrity
• Guarantees incident wave switching performance into 75Ω loads
• Provides improved latch-up immunity compared to standard logic

Applications

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

Procurement Notes

Verify the specific package variant (SOIC JEDEC, SOIC EIAJ, or QSOP) required for your design, as the 'SJ' suffix indicates the SOP EIAJ package. Confirm that the component is sourced from authorized distributors to ensure authenticity, given its history under Fairchild Semiconductor and subsequent acquisition by onsemi. Check current lifecycle status as older revisions may be obsolete.

Selection Notes

Select this component for designs requiring octal buffering with strict EMI constraints. Ensure the system voltage remains within the 2.0V to 3.6V range. Consider the propagation delay specifications when designing high-speed bus interfaces. Verify that the 3-state outputs are compatible with the receiving logic levels and that the 4mA output drive capability meets the load requirements.

Part Context

This part belongs to the LVQ series of low-voltage CMOS logic devices. It serves as an octal buffer/line driver variant within the broader family of bus transceivers and memory interface components. The LVQ series is characterized by its focus on reducing electromagnetic interference in dense PCB layouts while maintaining compatibility with 3.3V logic systems.

Replacement Considerations

Direct replacements include other octal buffers with 3-state outputs such as the SN74LVX244 or 74LVC244, provided pinouts and electrical characteristics like VCC range and propagation delay are compatible. Verify package dimensions if substituting with SOIC or TSSOP variants.