CD74HCT125E

Series:	74HCT
Packaging:	Tube
Part Status:	Active
Logic Type:	Buffer, Non-Inverting
Number of Elements:	4
Number of Bits per Element:	1
Input Type:	--
Output Type:	3-State
Current - Output High, Low:	6mA, 6mA
Voltage - Supply:	4.5 V ~ 5.5 V
Operating Temperature:	-55°C ~ 125°C (TA)
Mounting Type:	Through Hole
Package / Case:	14-DIP (0.300", 7.62mm)
Supplier Device Package:	14-PDIP
Base Part Number:	74HCT125

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The CD74HCT125E is a CMOS logic family of quad-buffer gate ICs used in various applications. It was made by Texas Instruments Inc. and is currently part of its logic products portfolio. The device provides a high level of noise immunity and reduced ground bounce. The device is made up of four independent, non-inverting buffers with 3-state outputs. The logic gates are connected internally with an active LOW enable pin that is shared between all four gates. CD74HCT125E can be used in a variety of applications such as data transmission, audio transmission, and computer interfaces. This article will discuss the application field and working principle of CD74HCT125E.Application FieldCD74HCT125E is mainly used for level translation applications in data transmission and audio transmission. The device is designed for use in low voltage applications, where the noise immunity needs to be improved and the ground bounce reduced. It can be used as an interface between various logic families, such as TTL and CMOS, to reduce the power dissipation associated with level shifting. In addition, the device is used in line receivers and receivers to improve the electrical characteristics of the signal. It is also commonly used in line drivers to reduce the noise produced by the load.Working PrincipleCD74HCT125E is based on the same principle as other logic gates. The active-low enable pin is connected to each of the four buffers, allowing for individual control of each buffer. The inputs of the device come from TTL logic, and the outputs are CMOS compatible. When the enable pin is a logic LOW, the output is enabled and the logical state at the input appears at the output. When the enable pin is a logic HIGH, the output is disabled, and the output is in a high impedance state. The device supports both slow rise and fall times, allowing it to be used in high-speed applications.The device is also designed to be used in noise-immune applications. It has a Schottky diode clamp which effectively reduces the amount of noise that can be coupled into the device. In addition, the device has a hysteresis feature which ensures that the device will not switch state in response to small changes in the input voltage.ConclusionCD74HCT125E is a logic gate made by Texas Instruments Inc. It is a CMOS logic family with four independent, non-inverting buffers with 3-state outputs. The device is mainly used for level translation applications in data transmission and audio transmission. It also has an active-low enable pin for individual controlling of each buffer, Schottky diode clamp for noise immunity, and hysteresis feature to avoid small changes in the input voltage from switching the state of the device. This makes the device a great choice for applications that require improved noise immunity and reduced ground bounce.

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