74LVCH32245AEC,518

Overview

The NXP USA Inc. 74LVCH32245AEC,518 is a 32-bit bus transceiver featuring non-inverting 3-state outputs in both send and receive directions. It operates with a supply voltage range of 1.65 V to 3.6 V and supports an input voltage up to 5.5 V for 5 V logic interfacing. The device includes four output enable (nOE) inputs and four direction control (nDIR) inputs. It utilizes a plastic low profile fine-pitch ball grid array package (LFBGA96) with dimensions of 13.5 x 5.5 x 1.05 mm.

Feature Summary

• Features 5 V tolerant inputs and outputs for direct interfacing with 5 V logic systems
• Includes bus hold circuitry on all data inputs to eliminate the need for external pull-up resistors
• Provides high-impedance state during power-up or power-down when nOE is tied to VCC

Applications

• Mixed 3.3 V and 5 V applications requiring level translation
• High-density memory bus architectures
• General-purpose bidirectional data transmission

Procurement Notes

Verify the specific ordering suffix '518' against current manufacturer documentation to confirm availability and exact packaging specifications. Confirm that the LFBGA96 package variant matches the required footprint for your PCB design. Ensure compliance with RoHS directives as specified in the product data sheet before finalizing procurement.

Selection Notes

Select this component for designs requiring 32-bit wide data buses with independent direction control per byte group. The LVCH series offers low power consumption suitable for battery-operated devices. Verify that the operating temperature range of -40 °C to +125 °C meets your environmental requirements.

Part Context

This part belongs to the 74LVCH family of CMOS logic devices designed for low-voltage operation. It serves as a high-performance alternative to standard TTL levels, offering compatibility with JEDEC standards for various voltage ranges. The device is manufactured by NXP Semiconductors under the Nexperia brand portfolio.

Replacement Considerations

Check for equivalent parts from other manufacturers such as SN74LVCH32245 variants. Ensure pinout compatibility and electrical characteristics match before substitution.

FAQ

How does the device handle unused inputs?

All data inputs have built-in bus hold circuitry, which eliminates the need for external pull-up resistors to hold unused inputs at a defined logic level.

What is the function of the nOE pins?

The four output enable (nOE) inputs control the outputs so that the buses are effectively isolated when disabled, ensuring a high-impedance state.