74LCX07TTR

Overview

The STMicroelectronics 74LCX07TTR is a low-voltage CMOS open drain hex buffer manufactured using sub-micron silicon gate and double-layer metal wiring C2MOS technology. It operates within an input voltage range of 2.0 V to 3.6 V, making it suitable for high-speed 3.3 V applications while maintaining compatibility with 5 V signal environments through its 5 V tolerant inputs. The device features symmetrical output impedance with a minimum drive current of 24 mA at 3 V supply. It provides high noise immunity, power-down protection on both inputs and outputs, and robust ESD performance exceeding 2 kV HBM.

Feature Summary

• Features 5 V tolerant inputs allowing direct interfacing with 5 V signal environments
• Provides high-speed operation with propagation delay as low as 5.2 ns at 3 V supply
• Includes power-down protection circuits on all inputs and outputs
• Offers symmetrical output impedance with guaranteed PCI bus levels

Applications

• Low-power and high-speed 3.3 V logic applications
• Interfacing between 3.3 V devices and 5 V signal environments
• PCI bus level translation and buffering

Procurement Notes

Verify the specific package type and tape/reel specifications against the manufacturer's datasheet before procurement. Confirm that the AEC-Q100 qualification status aligns with automotive application requirements if applicable. Ensure the ordering suffix matches the desired packaging format and check for any recent product change notifications regarding pinout or electrical characteristics.

Selection Notes

Select this component when a hex buffer with open-drain outputs is required for 3.3 V systems interfacing with 5 V signals. Consider the 5.2 ns propagation delay for high-speed timing constraints. Verify that the 24 mA drive current meets load requirements. Ensure the operating temperature range of -40°C to +85°C suits the environmental conditions.

Part Context

The 74LCX07 belongs to the 74LCX family of low-voltage CMOS logic devices from STMicroelectronics. This family is designed for low-power consumption while delivering speed performance comparable to older 5 V AC/ACT families. The device is part of ST's broader portfolio of automotive-grade logic ICs, which are qualified according to AEC-Q100 standards for reliability in automotive applications.

Replacement Considerations

Check for pin-compatible alternatives such as the 74LCX07MTC from Fairchild Semiconductor. Verify that substitute parts maintain the same open-drain output configuration and 5 V tolerance specifications. Ensure the replacement device offers equivalent propagation delay and drive current capabilities.