74LCX32245G

Overview

The onsemi 74LCX32245G 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 utilizes advanced CMOS technology for high-speed operation and low power dissipation.

Feature Summary

• Provides 5V tolerant inputs and outputs for safe interfacing between low voltage and 5V signal environments.
• Features byte-controlled architecture allowing independent management of four 8-bit data segments.
• Supports live insertion and withdrawal operations to maintain system integrity during hot-swapping.
• Incorporates patented noise and EMI reduction circuitry to enhance signal stability.

Applications

• Bus-oriented applications requiring bidirectional data transfer
• Interfacing low voltage logic circuits with 5V signal environments
• Systems supporting live insertion and withdrawal operations

Procurement Notes

Verify the specific ordering suffix 'G' indicates tray packaging when sourcing this component. Confirm that the device is currently manufactured by onsemi, noting its historical origin from Fairchild Semiconductor. Ensure compatibility with the required 96-ball FBGA footprint and JEDEC MO-205 package dimensions during procurement planning.

Selection Notes

Select this component for designs requiring 32-bit bidirectional data flow with 5V tolerance. It is suitable for systems operating at 2.3V to 3.6V supply voltages. Consider the byte-control feature if independent segment management is necessary. Verify that the 96-ball FBGA package fits the available board space and manufacturing capabilities.

Part Context

This device belongs to the LCX family of low-voltage CMOS logic products. It serves as a bridge between different voltage domains, specifically enabling communication between 2.5V/3.3V systems and 5V networks. The 32-bit width makes it efficient for parallel data buses where high pin count is acceptable.

Replacement Considerations

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

FAQ

How does the device handle data direction?

Data direction is determined by the T/R inputs. When T/R is LOW, data flows from Bus B to Bus A; when HIGH, data flows from Bus A to Bus B.

What is the function of the OE inputs?

The OE (Output Enable) inputs are active LOW. When HIGH, they disable both A and B ports, placing them in a high impedance state regardless of the T/R input status.

Is the device compatible with live insertion?

Yes, the device supports live insertion and withdrawal. To ensure a high-impedance state during power-up or power-down, the OE pin should be tied to VCC through a pull-up resistor.