HCF4019BEY

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The HCF4019BEY is a medium-range configurable and multi-function logic gate. The device is manufactured by Texas Instruments, one of the leading suppliers in the semiconductor industry. The dependable components used to assemble the HCF4019BEY make it an ideal choice for applications ranging from low power to high power. This device mostly finds its application in various general purpose applications where high precision and low power consumption is desired. Furthermore, the device plays an important role in various digital related circuit designs.

The HCF4019BEY is a member of the 4000 family of CMOS logic devices. It contains four independent 2-input non-inverting multiplexers, eight 2-input non-inverting buffers and eight inverters. Also included is an over-voltage tolerant input protection and wide supply voltage range capability. The HCF4019BEY works with a single power supply and the output levels are independent of the supply voltage. The device features reduced power consumption through its CMOS design, with a maximum low power active current of 6.9µA typ., and a typical power-down current of 0.1μA.

The 4096 and 41024 series CMOS devices, of which the HCF4019BEY is one, are dynamic logic designs. This means that changes in the output occurs with an associated timed delay between the change of the input and the output. This is due to the input signal to the dynamic logic being clocked, or synchronized, by a control signal (clock signal). An advantage of utilizing dynamic logic is that a higher rate of speed of operation can be achieved. The logic inputs of the HCF4019BEY are referenced to ground, as a logic 0, while the logic 1 is whatever voltage that is applied to the logic inputs.

The HCF4019BEY comes in the standard PDIP package, providing convenience in terms of installation and mounting. The device has an operating temperature range of 0°C to 70°C. This makes it suitable for most commercial applications where lower temperature operation is preferred. In addition the package is suitable for soldering to the printed circuit board, although special care must be taken when cleaning the board afterwards.

In terms of its input protection, the HCF4019BEY can withstand in excess of the maximum supply voltage and logic peak. This means that even in the case of device failure, it will not breach its input protection capability, allowing the designer of the device to adopt the most reliable solution to protect the inputs of their system.

The working principle of the HCF4019BEY is quite simple. The device consists of four independent 2-input, non-inverting multiplexers, eight 3-input non-inverting buffers and eight inverters. Inputs are driven by logic signals either "high" or "low". Outputs can be taken from any of the logic elements on the chip depending on the way the logic inputs are connected. The output is a combination of the logic inputs, where a logic "1" is generated when the input is high and a logic "0" is generated when the input is low. Alternatively, outputs can be taken from the inverters, allowing the circuit design to have inverted logic outputs.

In conclusion, the HCF4019BEY is a dependable CMOS logic device that works well in a variety of applications. It finds its application in low power, general purpose and digital related circuit designs. With its over-voltage protection and wide supply voltage range, the HCF4019BEY offers a valuable solution to circuit designers. Offered in the standard PDIP package, the HCF4019BEY is easy to mount on any printed circuit board and its dynamic logic design allows for higher levels of switch speed.

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