74LVCH16244AEV,151

Overview

The 74LVCH16244AEV,151 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 independent output enable inputs (1OE to 4OE) to control the state of the outputs. It incorporates IOFF circuitry to support partial power-down mode, preventing backflow current when powered down. Additionally, all data inputs feature bus hold circuits to maintain stable states without external pull-up resistors.

Feature Summary

• Provides 5 V tolerant inputs and outputs for direct interfacing with 5 V logic devices
• Includes IOFF circuitry to disable outputs and prevent damaging backflow current during partial power-down
• Features bus hold on all data inputs to eliminate the need for external pull-up resistors
• Utilizes low inductance multiple power and ground pins to minimize noise and ground bounce

Applications

• Mixed 3.3 V and 5 V environments requiring level translation
• Partial power-down applications utilizing IOFF functionality
• High-speed data buffering and line driving in portable or battery-powered equipment

Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature range. Confirm that the component meets the necessary JEDEC standards for the intended operating voltage. Ensure compliance with RoHS directives and check for any recent product change notices regarding pinout or electrical specifications before finalizing procurement.

Selection Notes

Select this component when a 16-bit buffer with 5 V tolerance is required. The LVCH variant specifically offers bus hold features not present in the standard LVC version. Consider the available packages such as TSSOP48 or TVSOP48 based on board space constraints. Verify that the operating temperature range aligns with the environmental conditions of the target application.

Part Context

This part belongs to the Nexperia 74LVC/LVCH family of high-speed CMOS logic devices. It is designed for low power consumption and wide supply voltage operation. The device serves as a versatile solution for data routing and signal conditioning in digital systems requiring isolation between different voltage domains.

Replacement Considerations

The 74LVC16244A is the non-5V-tolerant equivalent within the same family. Other 16-bit buffers from the 74LVC or 74LVCH series may serve as alternatives if pin compatibility and electrical characteristics are verified.