74LCXH32245GX

Overview

The onsemi 74LCXH32245GX is a low-voltage 32-bit bidirectional transceiver with 5V tolerant inputs and outputs, featuring bushold functionality. It operates within a supply voltage range of 2.0V to 3.6V, supporting byte-controlled data flow via separate control inputs for full 32-bit operation. The device provides ±24mA output drive at VCC = 3.0V and achieves a maximum propagation delay of 4.5ns at VCC = 3.3V. Packaged in a 96-ball Fine-Pitch Ball Grid Array (FBGA), it ensures high-speed operation with CMOS low power dissipation.

Feature Summary

• Features 5V tolerant inputs and outputs for interfacing between low-voltage logic and 5V signal environments.
• Incorporates bushold technology on inputs to eliminate the need for external pull-up or pull-down resistors.
• Supports live insertion and withdrawal operations while maintaining high-impedance states during power transitions.

Applications

• Bus-oriented applications requiring bidirectional data transfer
• Interfacing low-voltage logic circuits with 5V signal environments
• Byte-controlled data routing systems

Procurement Notes

Verify the specific ordering suffix when sourcing this component. The 'G' suffix indicates tray packaging, while appending an 'X' suffix denotes tape and reel availability. Confirm package dimensions against JEDEC MO-205 standards for the 96-ball FBGA form factor to ensure compatibility with existing board layouts.

Selection Notes

Select this transceiver for designs requiring robust 5V tolerance alongside low-voltage operation. Ensure the application benefits from bushold features to simplify input handling. Verify that the required propagation delay and output drive current align with system timing constraints and load requirements.

Part Context

This component belongs to the LCX family of low-voltage CMOS logic devices. It is designed for high-speed bus applications where interface flexibility between different voltage domains is critical. The device utilizes advanced CMOS technology to balance speed with low power consumption.

Replacement Considerations

Public confirmed substitute part numbers: 74LCX16245MTDX, 74LVCH32245ABFG, 74LVCH32245ABFG8.

FAQ

How does the bushhold feature function?

Bushhold eliminates the need for external pull-up or pull-down resistors by actively holding unused inputs in a defined state.

What is the purpose of the OE and T/R inputs?

The OE inputs disable both ports to place them in a high-impedance state, while the T/R inputs determine the direction of data flow through the device.