HEF4071BT,653

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Logic gates and inverters form the fundamental building blocks of digital circuits, playing a critical role in many modern systems. One of the most frequently used gates is the HEF4071BT,653, which is part of the HEF4071B family of ICs by Phillips Semiconductor. This device is a triple 3-state non-inverting buffer, capable of driving up to 10mA of current so it can be used to drive external devices. In this article, we will take an in-depth look at the application field and working principles of the HEF4071BT,653.

Features

The HEF4071BT,653 is a 3-state buffer gate consisting of three independent non-inverting drivers designed to provide 20mA of sink current. It has three inputs, an active low enable line, and three output channels. The device is capable of operating from either 3V or 5V supplies, and it can be used with a minimum supply voltage of 2.4V. The IC is protected against latch-up and false signals, it has open-drain outputs, and it is compliant with IO-Link and Dali system specifications.

Application Field

The applications for the HEF4071BT,653 are diverse, but most common in hubs, switches, routers, and network infrastructure equipment. In addition, the device can be used in automotive, medical, communications, and industrial markets. The device is a key part of the Open System Architecture (OSA) communications standard and is highly reliable, making it suitable for mission-critical applications and long-term use. The device is also used as an interface between digital and analog systems, as well as for controlling address and data lines, thereby pushing the boundaries of what digital engineering can achieve.

Working Principle

The HEF4071BT,653 is a logic gate driven by a single active-low enable line. The device has three inputs and three outputs, and each output is capable of sinking up to 10mA of current. When the enable line is low, the outputs are enabled, driving the data present at the inputs to the outputs. When the enable line is high, the output is disabled and the output pins are in a high-impedance state. This ensures that the device does not affect any device connected to the outputs when it is not enabled. In addition, all inputs to the device are actively pulled up to the supply voltage, ensuring valid logic levels even in the absence of an input.

Conclusion

The HEF4071BT,653 is a versatile 3-state buffer gate by Phillips Semiconductor. It can be used in a variety of applications in hubs, switches, routers, and other network infrastructures. In addition, the device is suitable for use in automotive, medical, and other industrial applications. The device is driven by a single active-low enable line, and it has three inputs and three 10mA current-sinking outputs. The active-low enable line allows for easy control of the device, and the pull-up inputs make sure that valid logic levels are consistently present.

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