74LV244APWJ

Overview

The Nexperia 74LV244APWJ is an octal buffer and line driver featuring three-state outputs, housed in a TSSOP20 (SOT360-1) package. It operates within a supply voltage range of 2.0 V to 5.5 V and supports mixed-mode voltage environments through overvoltage tolerant inputs. The device includes Schmitt-trigger action on all inputs for noise immunity and utilizes IOFF circuitry to prevent backflow current during partial power-down states. It provides two independent output enable controls, each managing four channels.

Feature Summary

• Supports mixed-mode voltage operation across all ports via overvoltage tolerant inputs
• Includes IOFF circuitry to disable outputs and prevent damaging backflow current during power-down
• Features Schmitt-trigger action at all inputs to tolerate slower input rise and fall times

Applications

• Mixed voltage bus driving applications
• Partial power-down system configurations
• Clock buffering and distribution circuits

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm package type and temperature range specifications. Ensure that the procurement channel sources products directly from authorized distributors or Nexperia to guarantee authenticity and compliance with the latest product data sheet revisions.

Selection Notes

Select this component when designing systems requiring eight-channel buffering with independent control over two groups of four outputs. The wide supply voltage compatibility allows integration into diverse logic families. Verify that the application environment remains within the specified operating temperature limits and that input transition rates comply with recommended operating conditions.

Part Context

This part belongs to the 74LV series of low-voltage CMOS logic devices manufactured by Nexperia. It functions as an octal buffer/line driver with three-state outputs, designed for high-speed digital signal transmission. The device is distinct from automotive-qualified variants and standard non-buffered logic gates within the broader Nexperia portfolio.

Replacement Considerations

Direct substitutes include other 74LV244 variants such as the 74LV244D or 74LV244PW, provided they match the required TSSOP20 package and electrical characteristics. Cross-referencing pinouts and voltage tolerances is essential before substitution.

FAQ

How does the IOFF circuitry function in this device?

The IOFF circuitry disables the outputs when the device is powered down, preventing potentially damaging backflow current from flowing through the device.

What is the purpose of the Schmitt-trigger action on the inputs?

The Schmitt-trigger action makes the circuit tolerant of slower input rise and fall times, improving noise immunity in the signal path.