74LVCH16244AEV,118

Overview

The 74LVCH16244AEV,118 is a 16-bit non-inverting buffer and line driver featuring 3-state outputs. It operates within a supply voltage range of 1.2 V to 3.6 V and provides 5 V tolerant inputs and outputs for interfacing with 5 V logic systems. The device includes four output enable inputs (1OE to 4OE) controlling groups of four outputs each. Inputs utilize Schmitt-trigger action for tolerance to slow rise and fall times. The LVCH variant incorporates bus hold circuitry on all data inputs to eliminate the need for external pull-up resistors.

Feature Summary

• Provides partial power-down protection via IOFF circuitry that disables outputs to prevent backflow current when powered down.
• Features bus hold functionality on data inputs specific to the LVCH variant to maintain input states without external components.
• Utilizes low inductance multiple power and ground pins to minimize noise and ground bounce during operation.
• Supports mixed 3.3 V and 5 V environments through 5 V tolerant inputs and outputs.

Applications

• Mixed 3.3 V and 5 V logic level translation
• Partial power-down mode applications requiring IOFF support
• High-speed data buffering and line driving

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range. Confirm whether the part number corresponds to the LVC or LVCH series, as the LVCH variant includes bus hold features not present in the standard LVC version. Ensure compatibility with the required operating temperature range before procurement.

Selection Notes

Select this component for designs requiring 16-bit buffering with 5 V tolerance. Choose the LVCH variant if bus hold functionality is needed to secure unused inputs. Verify that the application supports the specified 1.2 V to 3.6 V supply voltage range. Consider the package availability and pinout configuration relative to the PCB layout requirements.

Part Context

This component belongs to the Nexperia 74LVC/LVCH family of high-speed CMOS logic devices. It is designed for low-power applications requiring fast switching speeds. The device is manufactured by Nexperia, which acquired the semiconductor business formerly known as NXP Semiconductors. The product data sheet reflects current manufacturing specifications under the Nexperia brand.

Replacement Considerations

The 74LVC16244A is the non-bus-hold equivalent within the same family. Check the revision history for discontinued packages such as AEV (SOT702-1). Verify pinout compatibility with alternative packages like TSSOP48 (DGG) or TVSOP48 (DGV).