74LVCH322245AEC:55

Overview

The 74LVCH322245AEC:55 is a 32-bit bus transceiver featuring non-inverting 3-state outputs. It operates with a supply voltage range of 1.2 V to 3.6 V and supports inputs up to 5.5 V. The device includes four output enable (nOE) and four direction control (nDIR) inputs. It integrates 30 Ω series termination resistors in both HIGH and LOW output stages to reduce line noise. The component is housed in a 96-ball LFBGA package.

Feature Summary

• Features integrated 30 Ω series termination resistors in output stages to minimize signal reflections and line noise.
• Provides 5 V tolerant inputs and outputs, allowing direct interfacing with 5 V logic devices.
• Includes bus hold circuitry on all data inputs to eliminate the need for external pull-up resistors.
• Offers low inductance multiple power and ground pins to ensure minimum noise and ground bounce.

Applications

• Mixed 3.3 V and 5 V system applications
• High-speed data bus interfaces
• Cascaded multi-byte data transmission systems

Procurement Notes

Verify the current product status as this component may be discontinued or subject to end-of-life notices. Confirm that the specific ordering suffix matches the required package variant. Ensure compatibility with existing PCB footprints for the 96-ball LFBGA configuration before finalizing procurement decisions.

Selection Notes

Select this component when designing systems requiring bidirectional translation between 3.3 V and 5 V logic levels. It is suitable for applications needing integrated termination resistors to improve signal integrity. Consider the 96-ball LFBGA package constraints and thermal dissipation requirements during the design phase.

Part Context

This part belongs to the 74LVCH family of CMOS logic devices manufactured by NXP Semiconductors. It is designed for high-speed bus applications requiring low power consumption and robust ESD protection. The device complies with JEDEC standards JESD8-B and JESD36 for interface specifications.

Replacement Considerations

Check for updated revisions within the 74LVCH322245A series. Verify pinout compatibility if substituting with other 32-bit transceivers from different manufacturers.

FAQ

How does the device handle unused inputs?

All data inputs feature a bus hold circuit, which eliminates the need for external pull-up resistors to maintain unused inputs in a defined state.

What is the purpose of the nOE input?

The nOE (output enable) input controls the outputs to effectively isolate the buses when disabled, ensuring a high-impedance state.