74LVQ245QSCX

Overview

The onsemi 74LVQ245QSCX is a low voltage octal bidirectional transceiver with 3-state outputs, designed for bus-oriented applications. 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 12 mA current sinking capability at both A and B ports, ensuring robust signal transmission. Propagation delays are guaranteed up to 15.0 ns under maximum load conditions. It includes patented EMI reduction circuitry and improved latch-up immunity exceeding 300 mA.

Feature Summary

• Implements patented EMI reduction circuitry for low power and low noise performance in 3.3V applications.
• Provides 12 mA current sinking capability at both the A and B ports for reliable data flow.
• Features improved latch-up immunity and high ESD protection levels.

Applications

• Bus-oriented applications requiring two-way asynchronous communication between data buses.
• Low power/low noise 3.3V system designs.
• Systems requiring incident wave switching into 75Ω transmission lines.

Procurement Notes

Verify the specific package type matches the QSOP (MQA20) designation when ordering. Confirm that the 'X' suffix indicates tape and reel packaging if required for automated assembly processes. Ensure compatibility with the 2.0V to 3.6V supply voltage range for your target application environment.

Selection Notes

Select this component for applications requiring octal bidirectional data transfer with 3-state output control. It is suitable for systems needing low noise performance and EMI reduction. Ensure input pins are not left floating and consider the propagation delay specifications relative to your system clock speeds.

Part Context

This component belongs to the LVQ series of low voltage logic devices. It serves as a bus transceiver, facilitating data movement between different sections of a circuit board. The device is manufactured by onsemi, formerly part of Fairchild Semiconductor, and maintains pin and function compatibility with standard logic families.

Replacement Considerations

MC74LVQ245DTR2G

FAQ

What determines the direction of data flow in the 74LVQ245QSCX?

The Transmit/Receive (T/R) input determines the direction. An active-HIGH level enables data flow from A ports to B ports, while an active-LOW level enables data flow from B ports to A ports.

How does the Output Enable (OE) pin function?

When the OE input is HIGH, it disables both A and B ports by placing them in a HIGH-Z state, effectively isolating the buses.