74LVQ240SCX

Overview

The onsemi 74LVQ240SCX is a low voltage octal buffer and line driver featuring inverting logic with three-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 provides high drive capability with output currents up to ±12mA at 3.3V, while maintaining low quiescent current of 40µA maximum. Propagation delay is guaranteed at 10.5ns maximum at 3.3V. It utilizes a 20-lead SOIC package (M20B) and includes EMI reduction circuitry for improved signal integrity.

Feature Summary

• Implements patented EMI reduction circuitry to minimize electromagnetic interference during switching operations.
• Provides three-state outputs controlled by independent OE1 and OE2 inputs for effective bus management.
• Features improved latch-up immunity and 4kV minimum ESD protection for enhanced reliability.
• Guarantees incident wave switching performance into 75Ω transmission lines.

Applications

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

Procurement Notes

Verify the specific ordering suffix 'X' indicates tape and reel packaging when sourcing this component. Confirm the manufacturer origin, as Fairchild Semiconductor products are now part of onsemi's portfolio. Ensure the datasheet version matches the production batch requirements for your design. Check RoHS compliance status through official documentation before finalizing procurement specifications.

Selection Notes

Select this component for applications requiring low power consumption and noise reduction in 3.3V systems. The octal configuration allows driving multiple lines simultaneously, improving PCB density. Consider the propagation delay limits when designing high-speed interfaces. Verify that the input voltage levels align with the source logic family to ensure proper threshold recognition across the full operating temperature range.

Part Context

This device belongs to the LVQ series of low voltage CMOS logic components. It serves as an octal buffer and line driver variant within the broader logic IC category. The technology focuses on reducing power dissipation while maintaining robust drive strength for digital signal transmission in compact electronic designs.

Replacement Considerations

Check for equivalent parts in the 74LVQ240 family from other manufacturers. Verify pin compatibility and electrical characteristics such as propagation delay and output current capabilities. Ensure the replacement offers similar EMI reduction features if noise sensitivity is a critical design constraint.

FAQ

What is the function of the OE1 and OE2 pins?

OE1 and OE2 are three-state output enable inputs that control the state of the outputs. When these inputs are low, the outputs are active; when high, the outputs enter a high-impedance state.

Is the 74LVQ240 an inverting or non-inverting buffer?

The 74LVQ240 is an inverting octal buffer and line driver, meaning the output logic level is the inverse of the input logic level when enabled.