74LVT2244D,112

Overview

The Nexperia 74LVT2244D,112 is an octal buffer and line driver featuring 3-state outputs with integrated 30 Ω series termination resistors. It operates within a supply voltage range of 2.7 V to 3.6 V and accepts overvoltage tolerant inputs up to 5.5 V. The device provides BiCMOS high-speed performance with output drive capabilities of +12 mA and -12 mA. It includes bus hold data inputs to eliminate external pull-up requirements and IOFF circuitry for partial power-down mode operation. The component is specified for ambient temperatures from -40 °C to +85 °C.

Feature Summary

• Integrated 30 Ω series resistance in both HIGH and LOW output states to reduce line noise
• Bus hold functionality on data inputs to define unused input states without external components
• IOFF circuitry enabling partial power-down mode and protection against live insertion

Applications

• Memory address drivers
• Clock drivers
• Bus receivers and transmitters

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the SO20 (SOT163-1) package variant when sourcing. Confirm that the required operating temperature range aligns with the standard -40 °C to +85 °C specification. Ensure design compatibility with the 2.7 V to 3.6 V supply voltage limits and check for any recent datasheet revisions affecting pinout or electrical characteristics.

Selection Notes

Select this component for applications requiring octal buffering with built-in termination to minimize signal reflections. It is suitable for mixed-voltage environments due to 5.5 V tolerant inputs while maintaining 3.3 V logic levels. Consider the BiCMOS technology for high-speed requirements and the bus hold feature for simplified interface design where unused inputs must be managed internally.

Part Context

This part belongs to the 74LVT logic family, designed specifically for low-voltage 3.3 V systems. It serves as a specialized variant of standard octal buffers by incorporating internal termination resistors, distinguishing it from non-terminated counterparts like the 74LVT244. The D suffix indicates the SO20 plastic small outline package configuration.

Replacement Considerations

Direct functional substitutes include other 3.3 V octal buffers with 3-state outputs, such as the 74LVT244. However, replacement parts lacking the integrated 30 Ω termination resistors will require external components to achieve equivalent noise reduction performance.