74LCX32245GX

Overview

The onsemi 74LCX32245GX is a low voltage 32-bit bidirectional transceiver with 5V tolerant inputs and outputs. It contains thirty-two non-inverting buffers with 3-STATE outputs, designed for bus-oriented applications in 2.5V or 3.3V VCC environments interfacing to 5V signals. The device features byte control with separate inputs for four bytes, supporting live insertion/withdrawal. Packaged in a 96-ball Fine-Pitch Ball Grid Array (FBGA), it operates within a supply voltage range of 2.0V to 3.6V and an ambient temperature range of -40°C to +85°C.

Feature Summary

• Provides 5V tolerant inputs and outputs for safe interfacing between low voltage logic and 5V signal environments.
• Features byte-controlled operation allowing independent management of four 8-bit data segments via separate OE and T/R inputs.
• Supports live insertion and withdrawal capabilities when the Output Enable pin is properly managed during power transitions.
• Utilizes advanced CMOS technology to achieve high-speed operation while maintaining low power dissipation.

Applications

• Bus-oriented applications requiring bidirectional data transfer between different voltage domains.
• Systems requiring interface bridging between low voltage logic circuits and 5V signal environments.
• Applications necessitating byte-level control over data flow direction and output enable states.

Procurement Notes

Verify component authenticity as this part number may be obsolete. Confirm package integrity upon receipt, specifically checking for damage to the 96-ball FBGA structure. Ensure storage conditions adhere to moisture sensitivity level requirements before reflow soldering. Cross-reference ordering codes carefully, noting that suffixes indicate specific packaging variations such as trays or tape and reel formats.

Selection Notes

Select this component when designing systems that require bidirectional data transfer between 2.5V or 3.3V logic and 5V tolerant buses. It is suitable for applications needing byte-wise control rather than full-word control. Consider the 96-ball FBGA package constraints regarding PCB layout and thermal management. Verify that the operating voltage range aligns with the system's power supply specifications.

Part Context

This device belongs to the LCX family of low voltage CMOS logic components. It serves as a specialized transceiver for managing data flow across voltage boundaries. The 96-ball FBGA package provides a compact solution for high-density board designs. Its design focuses on minimizing power consumption while ensuring reliable signal transmission in mixed-voltage environments.

Replacement Considerations

Public confirmed substitute part numbers include 74LCX16245MTDX, 74LVCH32245ABFG, and 74LVCH32245ABFG8.

FAQ

How does the device handle live insertion and withdrawal?

The device supports live insertion and withdrawal provided the Output Enable (OE) input is tied to VCC through a pull-up resistor to ensure a high-impedance state during power up or down.

What is the maximum propagation delay at 3.3V?

The maximum propagation delay (tPD) is 4.5 ns when the supply voltage (VCC) is 3.3V.