74LVCH32244AEC,518

Overview

The 74LVCH32244AEC,518 is a 32-bit non-inverting buffer and line driver manufactured by NXP USA Inc. It operates within a supply voltage range of 1.2 V to 3.6 V and features 5 V tolerant inputs and outputs for interfacing with 5 V logic systems. The device utilizes a MULTIBYTE flow-trough architecture and includes bushold data inputs to eliminate the need for external pull-up resistors on floating lines. Packaged in a 96-pin LFBGA (SOT536-1), it provides eight active-low output enable inputs to control three-state operation.

Feature Summary

• Provides 5 V tolerant input and output capabilities for mixed-voltage system interfacing
• Incorporates bushold circuitry on all data inputs to maintain valid logic levels without external components
• Features low-inductance multiple power and ground pins to minimize noise and ground bounce

Applications

• Interfacing between 3.3 V and 5 V logic domains
• High-performance bus buffering applications
• Line driving in mixed-signal environments

Procurement Notes

Verify the specific ordering suffix

Selection Notes

Select this component when designing systems requiring high-density 32-bit buffering with mixed 3.3 V and 5 V compatibility. The LFBGA package suits space-constrained designs, while the bushold feature simplifies PCB layout by removing the requirement for pull-up resistors on unused or floating data lines.

Part Context

This part belongs to the 74LVCH series of low-voltage CMOS logic devices. It serves as a high-performance alternative to standard TTL families, offering superior speed and lower power consumption. The device is designed for applications demanding reliable signal integrity in multi-voltage digital systems.

Replacement Considerations

Check for direct pin-compatible replacements within the same logic family that may have updated manufacturing status or availability from NXP distributors.

FAQ

How does the bushold feature function?

The bushold circuit ensures that if a data input voltage exceeds the supply voltage (VCC), the internal circuit switches off, allowing the input to accept voltages up to 5.5 V safely.

What is the purpose of the nOE pins?

The eight nOE pins are active-low output enable inputs. Driving any nOE pin HIGH places the corresponding outputs into a high-impedance OFF-state.