74LVCH16244AEV,157

Overview

The 74LVCH16244AEV,157 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 supports inputs up to 5.5 V, enabling direct interfacing with 5 V logic systems. The device includes four independent output enable inputs (1OE to 4OE) for controlling data flow. It incorporates IOFF circuitry to prevent backflow current during partial power-down states. All data inputs feature bus hold circuits to maintain stable logic levels without external pull-up resistors.

Feature Summary

• Provides 5 V tolerant inputs and outputs for seamless integration with mixed voltage logic environments.
• Includes integrated IOFF circuitry to disable outputs and eliminate damaging backflow currents when the device is powered down.
• Features bus hold functionality on all data inputs to maintain defined logic states and remove the need for external pull-up components.

Applications

• Mixed voltage level translation between 3.3 V and 5 V logic domains
• Partial power-down mode operation in multi-supply systems
• High-speed data buffering and line driving applications

Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest documentation to confirm package type and temperature range. Confirm that the component meets the required JEDEC standards for the intended operating voltage. Ensure design compatibility with the specified ESD protection levels and thermal dissipation requirements before finalizing procurement.

Selection Notes

Select this component for designs requiring 16-bit buffering with high noise immunity and low power consumption. The LVCH series is appropriate for applications needing 5 V tolerance while operating at lower supply voltages. Verify that the package dimensions fit the available PCB space and that the thermal characteristics support the expected power dissipation under maximum load conditions.

Part Context

This component belongs to the Nexperia LVC/LVCH logic family, designed for low-voltage CMOS applications. It utilizes a multibyte flow-through architecture to minimize propagation delay. The device is manufactured using advanced CMOS technology to ensure low static power consumption while maintaining high-speed performance suitable for modern digital systems.

Replacement Considerations

Consult official Nexperia documentation for verified substitute part numbers. Cross-reference pinouts and electrical specifications carefully to ensure functional equivalence. Do not assume interchangeability with similar logic families without verifying absolute maximum ratings and timing parameters.

FAQ

How does the IOFF circuitry function?

The IOFF circuitry automatically disables the outputs when the device is in a partial power-down state, preventing potentially damaging backflow current through the device.

What is the purpose of the bus hold feature?

The bus hold feature on all data inputs eliminates the need for external pull-up resistors by holding unused or floating inputs at a defined logic level.