74LV244ATPWJ

Overview

The Nexperia 74LV244ATPWJ is an octal buffer and line driver featuring three-state outputs, designed for operation within a supply voltage range of 4.5 V to 5.5 V. It incorporates TTL-compatible inputs with Schmitt-trigger action to tolerate slow input transitions. The device includes dedicated IOFF circuitry to prevent damaging backflow currents during partial power-down states. Packaged in a TSSOP20 (SOT360-1) format, it supports mixed-mode voltage operations across all ports.

Feature Summary

• Features two independent output enable controls for managing three-state high-impedance OFF-states.
• Incorporates IOFF circuitry to disable outputs and prevent backflow current during power-down conditions.
• Provides direct interface compatibility with TTL logic levels.

Applications

• Translating signals from 3.3 V logic sources to 5 V systems.
• Carrying bus-oriented communications requiring controlled impedance.
• Clock distribution and buffering applications.

Procurement Notes

Verify the specific ordering suffix 'PWJ' against official Nexperia documentation to confirm package variant details. Ensure the application environment strictly adheres to the specified 4.5 V to 5.5 V supply voltage limits. Confirm that thermal management strategies account for the maximum total power dissipation ratings provided in the datasheet.

Selection Notes

Select this component when interfacing between 3.3 V and 5 V domains using TTL-compatible logic standards. It is suitable for designs requiring robust noise immunity via Schmitt-trigger inputs. Consider its performance if partial power-down protection is necessary to safeguard downstream components from backflow currents.

Part Context

This part belongs to the 74LV series of low-voltage CMOS logic devices manufactured by Nexperia. It functions as an octal buffer or line driver with three-state outputs. The device is engineered for high-speed digital applications, offering balanced propagation delays and compliance with various JEDEC standards for different voltage ranges.

Replacement Considerations

Consult official Nexperia substitution guides for verified alternatives. Generic cross-references may not match the specific PWJ package configuration or exact electrical characteristics required for the design.

FAQ

How does the device handle partial power-down scenarios?

The integrated IOFF circuitry automatically disables the outputs when the device is powered down, preventing potentially damaging backflow currents through the component.

What input logic levels are supported?

The inputs are TTL compatible, allowing the device to directly interface with TTL logic levels while operating within its specified supply voltage range.